low flow transmitter

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User’sManual

EJX115ALow Flow Transmitter

IM 01C25K01-01E

IM 01C25K01-01E4th Edition



ii

IM 01C25K01-01E

5. Installing Impulse Piping ......................................................................... 5-1

5.1 Process Piping Installation Precautions ........................................................5-1

5.1.1 Connecting Process Piping to the Transmitter ..................................5-1

5.1.2 Routing the Process Piping ...............................................................5-1

5.2 Process Piping Connection Examples ...........................................................5-2

6. Wiring ......................................................................................................... 6-16.1 Wiring Precautions ...........................................................................................6-1

6.2 Selecting the Wiring Materials .........................................................................6-1

6.3 Connections of External Wiring to Terminal Box ..........................................6-1

6.3.1 Power Supply Wiring Connection ......................................................6-1

6.3.2 External Indicator Connection............................................................6-1

6.3.3 Communicator Connection ................................................................6-1

6.3.4 Check Meter Connection ...................................................................6-2

6.3.5 Status Output Connection ..................................................................6-2

6.4 Wiring .................................................................................................................6-2

6.4.1 Loop Conguration ............................................................................6-2

6.4.2 Wiring Installation ...............................................................................6-2

6.5 Grounding ..........................................................................................................6-3

6.6 Power Supply Voltage and Load Resistance .................................................6-3

7. Operation ................................................................................................... 7-1

7.1 Preparation for Starting Operation .................................................................7-1

7.2 Zero Point Adjustment .....................................................................................7-2

7.3 Starting Operation ............................................................................................7-2

7.4 Shutting Down Operation ................................................................................7-3

7.5 Transmitter Measurement Range(Determining Differential Pressure Range) ....................................................7-3

7.5.1 Determining the Differential Pressure Range ....................................7-3

7.5.2 Example of Calculation ......................................................................7-4

7.6 Venting or Draining Transmitter Pressure-detector Section .......................7-6

7.6.1 Draining Condensate .........................................................................7-6

7.6.2 Venting Gas........................................................................................7-6

7.7 Setting the Range Using the Range-setting Switch ......................................7-6

8. Maintenance .............................................................................................. 8-18.1 Overview ............................................................................................................8-1

8.2 Calibration Instruments Selection ..................................................................8-1

8.3 Calibration .........................................................................................................8-1

8.4 Disassembly and Reassembly ........................................................................8-3

8.4.1 Replacing the Integral Indicator .........................................................8-3

8.4.2 Replacing the CPU Board Assembly .................................................8-4

8.4.3 Replacing the Process Connector Gaskets .......................................8-4

8.4.4 Cleaning Manifold Assembly and Replacing Orice ..........................8-4

8.4.5 Cleaning and Replacing the Capsule Assembly ...............................8-5



iii

IM 01C25K01-01E

8.5 Troubleshooting ................................................................................................8-6

8.5.1 Basic Troubleshooting .......................................................................8-6

8.5.2 Troubleshooting Flowcharts...............................................................8-7

8.5.3 Alarms and Countermeasures ...........................................................8-9

9. General Specications ............................................................................ 9-1

9.1 Standard Specications ...................................................................................9-19.2 Model and Sufx Codes ...................................................................................9-4

9.3 Optional Specications ...................................................................................9-5

9.4 Dimensions ........................................................................................................9-7

Revision Information

When using the EJX in a Safety Instrumented Systems(SIS) application,refer to Appendix A in either IM 01C25T01-01E for the HART protocol orIM 01C25T03-01E for the BRAIN protocol.



<1. Introduction> 1-1

IM 01C25K01-01E

1. Introduction

Thank you for purchasing the DPharp EJX Low ow

transmitter.

Your EJX Pressure Transmitter was precisely

calibrated at the factory before shipment. To ensureboth safety and efciency, please read this manual

carefully before you operate the instrument.

NOTE

This manual describes the hardware

congurations of EJX series transmitters. For

information on the software conguration and

operation, please refer to either IM 01C25T03-

01E for the EJX series BRAIN communication

type, or IM 01C25T01-01E/IM 01C25T01-06EN

for the EJX series HART communication type.

For FOUNDATION Fieldbus protocol type,

please refer to IM 01C25T02-01E.

To ensure correct use of this instrument, read

both the hardware and software manuals

thoroughly before use.

WARNING

When using the EJX in a Safety InstrumentedSystems (SIS) application, refer to Appendix 1 in

either IM 01C25T01-01E/IM 01C25T01-06EN for

the HART protocol or IM 01C25T03-01E for the

BRAIN protocol. The instructions and procedures

in this section must be strictly followed in order to

maintain the transmitter for this safety level.

Model Style code

EJX115A S1

Regarding This Manual

• This manual should be provided to the end

user.

• The contents of this manual are subject to

change without prior notice.

• All rights reserved. No part of this manual may

be reproduced in any form without Yokogawa’s

written permission.

• Yokogawa makes no warranty of any kind with

regard to this manual, including, but not limited

to, implied warranty of merchantability and

tness for a particular purpose.

• If any question arises or errors are found, or if

any information is missing from this manual,please inform the nearest Yokogawa sales

ofce.

• The specications covered by this manual are

limited to those for the standard type under the

specied model number break-down and do not

cover custom-made instruments.

• Please note that changes in the specications,

construction, or component parts of the

instrument may not immediately be reected

in this manual at the time of change, provided

that postponement of revisions will not cause

difculty to the user from a functional or

performance standpoint.

• Yokogawa assumes no responsibilities for this

product except as stated in the warranty.

• If the customer or any third party is harmed by

the use of this product, Yokogawa assumes

no responsibility for any such harm owing to

any defects in the product which were not

predictable, or for any indirect damages.

• The following safety symbols are used in thismanual:




IM 01C25K01-01E

WARNING

Indicates a potentially hazardous situation which,if not avoided, could result in death or seriousinjury.

CAUTION

Indicates a potentially hazardous situation which,if not avoided, may result in minor or moderateinjury. It may also be used to alert against unsafepractices.

IMPORTANT

Indicates that operating the hardware or softwarein this manner may damage it or lead to systemfailure.

NOTE

Draws attention to information essential forunderstanding the operation and features.

Direct current

1.1 Safe Use of This Product

For the safety of the operator and to protect theinstrument and the system, please be sure to followthis manual’s safety instructions when handling thisinstrument. If these instructions are not heeded,the protection provided by this instrument may be

impaired. In this case, Yokogawa cannot guaranteethat the instrument can be safely operated. Pleasepay special attention to the following points:

(a) Installation

• This instrument may only be installed by anengineer or technician who has an expertknowledge of this device. Operators are notallowed to carry out installation unless theymeet this condition.

• With high process temperatures, care must

be taken not to burn yourself by touching theinstrument or its casing.

• Never loosen the process connector nuts whenthe instrument is installed in a process. This canlead to a sudden, explosive release of processuids.

• When draining condensate from the pressuredetector section, take appropriate precautionsto prevent the inhalation of harmful vapors andthe contact of toxic process uids with the skinor eyes.

• When removing the instrument from ahazardous process, avoid contact with the uidand the interior of the meter.

• All installation shall comply with local installationrequirements and the local electrical code.

(b) Wiring

• The instrument must be installed by anengineer or technician who has an expertknowledge of this instrument. Operators are not

permitted to carry out wiring unless they meetthis condition.

• Before connecting the power cables, pleaseconrm that there is no current owing throughthe cables and that the power supply to theinstrument is switched off.




IM 01C25K01-01E

(c) Operation

• Wait 5 min. after the power is turned off, beforeopening the covers.

(d) Maintenance

• Please carry out only the maintenance

procedures described in this manual. If yourequire further assistance, please contact thenearest Yokogawa ofce.

• Care should be taken to prevent the build up ofdust or other materials on the display glass andthe name plate. To clean these surfaces, use asoft, dry cloth.

(e) Explosion Protected Type Instrument

• Users of explosion proof instruments shouldrefer rst to section 2.9 (Installation of an

Explosion Protected Instrument) of this manual.• The use of this instrument is restricted to those

who have received appropriate training in thedevice.

• Take care not to create sparks when accessingthe instrument or peripheral devices in ahazardous location.

(f) Modication

• Yokogawa will not be liable for malfunctions ordamage resulting from any modication madeto this instrument by the customer.

1.2 Warranty

• The warranty shall cover the period noted onthe quotation presented to the purchaser at thetime of purchase. Problems occurring duringthe warranty period shall basically be repairedfree of charge.

• If any problems are experienced with thisinstrument, the customer should contact theYokogawa representative from which thisinstrument was purchased or the nearestYokogawa ofce.

• If a problem arises with this instrument,please inform us of the nature of the problemand the circumstances under which itdeveloped, including the model specicationand serial number. Any diagrams, data andother information you can include in your

communication will also be helpful.• The party responsible for the cost of xing the

problem shall be determined by Yokogawafollowing an investigation conducted byYokogawa.

• The purchaser shall bear the responsibility forrepair costs, even during the warranty period, ifthe malfunction is due to:

- Improper and/or inadequate maintenance by

the purchaser.- Malfunction or damage due to a failureto handle, use, or store the instrument inaccordance with the design specications.

- Use of the product in question in a locationnot conforming to the standards specied byYokogawa, or due to improper maintenanceof the installation location.

- Failure or damage due to modication orrepair by any party except Yokogawa or anapproved representative of Yokogawa.

- Malfunction or damage from improper

relocation of the product in question afterdelivery.

- Reason of force majeure such as res,earthquakes, storms/oods, thunder/lightening, or other natural disasters, ordisturbances, riots, warfare, or radioactivecontamination.




IM 01C25K01-01E

1.3 ATEX Documentation

This is only applicable to the countries in European Union.

GB

DK

I

E

NL

SF

P

F

D

S

LT

LV

PL

EST

SLO

H

BG

RO

M

CZ

SK

GR



<2. Handling Cautions> 2-1

IM 01C25K01-01E

2. Handling Cautions

This chapter provides important information on howto handle the transmitter. Read this carefully beforeusing the transmitter.

EJX Series transmitters are thoroughly tested at thefactory before shipment. When taking delivery of aninstrument, visually check them to make sure thatno damage occurred during shipment.

Also check that all transmitter mounting hardwareshown in gure 2.1 is included. If the transmitteris ordered without the mounting bracket and theprocess connector, the transmitter mountinghardware will not be included. After checking thetransmitter, carefully repack it in its box and keep itthere until you are ready to install it.

U-bolt nut

U-bolt nut

U-bolt

U-bolt

Mounting bracket(L type)

Transmitter mounting bolt

Transmittermounting bolt

Mounting bracket(Flat type)

F0201.ai

Figure 2.1 Transmitter Mounting Hardware

2.1 Model and Specications

Check

The model name and specications are written onthe name plate attached to the case.

F0202.ai

Figure 2.2 Name Plate

2.2 Unpacking

Keep the transmitter in its original packaging toprevent it from being damaged during shipment.Do not unpack the transmitter until it reaches theinstallation site.

2.3 Storage

The following precautions must be observed whenstoring the instrument, especially for a long period.

(a) Select a storage area which meets the following

conditions:• It is not exposed to rain or subject to waterseepage/leaks.

• Vibration and shock are kept to a minimum.• It has an ambient temperature and relative

humidity within the following ranges.

Ambient temperature: –40* to 85°C without integral indicator

–30* to 80°C with integral indicator * –15°C when /HE is specied.

Relative humidity:0% to 100% R.H.

Preferred temperature and humidity:approx. 25°C and 65% R.H.

(b) When storing the transmitter, repack it carefullyin the packaging that it was originally shippedwith.

(c) If the transmitter has been used, thoroughlyclean the chambers inside the cover angesand integral ow orice unit, so that thereis no process uid remaining inside. Beforeplacing it in storage, also make sure that the

pressure-detector is securely connected to thetransmitter section.




IM 01C25K01-01E

2.4 Selecting the Installation

Location

The transmitter is designed to withstand severeenvironmental conditions. However, to ensurethat it will provide years of stable and accurateperformance, take the following precautions when

selecting the installation location.

(a) Ambient Temperature Avoid locations subject to wide temperaturevariations or a signicant temperature gradient.If the location is exposed to radiant heat fromplant equipment, provide adequate thermalinsulation and/or ventilation.

(b) Ambient AtmosphereDo not install the transmitter in a corrosiveatmosphere. If this cannot be avoided, there

must be adequate ventilation as well asmeasures to prevent the leaking of rain waterand the presence of standing water in theconduits.

(c) Shock and Vibration Although the transmitter is designed to berelatively resistant to shock and vibration, aninstallation site should be selected where this iskept to a minimum.

(d) Installation of Explosion-protected Transmitters An explosion-protected transmitters is

certied for installation in a hazardous areacontaining specic gas types. See subsection2.9 “Installation of an Explosion-ProtectedTransmitters.”

2.5 Pressure Connection

WARNING

• Never loosen the process connector boltswhen an instrument is installed in a process.

The device is under pressure, and a loss ofseal can result in a sudden and uncontrolledrelease of process uid.

• When draining toxic process uids that havecondensed inside the pressure detector,take appropriate steps to prevent the contactof such uids with the skin or eyes and theinhalation of vapors from these uids.

The following precautions must be observedin order to safely operate the transmitter underpressure.

(a) Make sure that all the process connector boltsare tightened rmly.

(b) Make sure that there are no leaks in the impulse

piping.(c) Never apply a pressure higher than thespecied maximum working pressure.

2.6 Waterproong of Cable

Conduit Connections

Apply a non-hardening sealant to the threadsto waterproof the transmitter cable conduitconnections. (See gure 6.8, 6.9 and 6.10.)

2.7 Restrictions on Use of RadioTransceivers

IMPORTANT

Although the transmitter has been designed toresist high frequency electrical noise, if a radiotransceiver is used near the transmitter or itsexternal wiring, the transmitter may be affectedby high frequency noise pickup. To test this, startout from a distance of several meters and slowly

approach the transmitter with the transceiverwhile observing the measurement loop for noiseeffects. Thereafter use the transceiver outsidethe range where the noise effects were rstobserved.

2.8 Insulation Resistance and

Dielectric Strength Test

Since the transmitter has undergone insulationresistance and dielectric strength tests at the factory

before shipment, normally these tests are notrequired. If the need arises to conduct these tests,heed the following:

(a) Do not perform such tests more frequently thanis absolutely necessary. Even test voltages thatdo not cause visible damage to the insulationmay degrade the insulation and reduce safetymargins.




IM 01C25K01-01E

(b) Never apply a voltage exceeding 500 V DC(100 V DC with an internal lightning protector)for the insulation resistance test, nor a voltageexceeding 500 V AC (100 V AC with an internallightning protector) for the dielectric strengthtest.

(c) Before conducting these tests, disconnect

all signal lines from the transmitter terminals.The procedure for conducting these tests is asfollows:

• Insulation Resistance Test

1) Short-circuit the + and – SUPPLY terminals inthe terminal box.

2) Turn OFF the insulation tester. Then connectthe insulation tester plus (+) lead wire to theshorted SUPPLY terminals and the minus (–)leadwire to the grounding terminal.

3) Turn ON the insulation tester power andmeasure the insulation resistance. The voltageshould be applied as briey as possible to verifythat the insulation resistance is at least 20 MΩ.

4) After completing the test and being very carefulnot to touch exposed conductors disconnect theinsulation tester and connect a 100 kΩ resistorbetween the grounding terminal and the short-circuiting SUPPLY terminals. Leave this resistorconnected at least one second to discharge anystatic potential. Do not touch the terminals whileit is discharging.

• Dielectric Strength Test

1) Short-circuit the + and – SUPPLY terminals inthe terminal box.

2) Turn OFF the dielectric strength tester. Thenconnect the tester between the shortedSUPPLY terminals and the grounding terminal.Be sure to connect the grounding lead of thedielectric strength tester to the ground terminal.

3) Set the current limit on the dielectric strengthtester to 10 mA, then turn ON the power and

gradually increase the test voltage from ‘0’ tothe specied voltage.4) When the specied voltage is reached, hold it

for one minute.5) After completing this test, slowly decrease the

voltage to avoid any voltage surges.

2.9 Installation of an Explosion-

Protected Instrument

NOTE

For FOUNDATION Fieldbus explosion protectedtype, please refer to IM 01C22T02-01E.

If a customer makes a repair or modication toan intrinsically safe or explosionproof instrumentand the instrument is not restored to its originalcondition, its intrinsically safe or explosionproofconstruction may be compromised and theinstrument may be hazardous to operate. Pleasecontact Yokogawa before making any repair ormodication to an instrument.

CAUTION

This instrument has been tested and certiedas being intrinsically safe or explosionproof.Please note that severe restrictions apply to thisinstrument’s construction, installation, externalwiring, maintenance and repair. A failure to abideby these restrictions could make the instrument ahazard to operate.

WARNING

Maintaining the safety of explosionproofequipment requires great care during mounting,wiring, and piping. Safety requirements alsoplace restrictions on maintenance and repair.Please read the following sections very carefully.

WARNING

The range setting switch must not be used in a

hazardous area.

IMPORTANT

All the blind plugs which accompany the EJXtransmitters upon shipment from the factory arecertied by the applicable agency in combinationwith the EJX series transmitters. The plugs whichare marked with the symbols “◊ Ex” on theirsurfaces are certied only in combination withthe EJX series transmitters.




IM 01C25K01-01E

2.9.1 FM Approval

a. FM Intrinsically Safe Type

Caution for FM intrinsically safe type. (Followingcontents refer “DOC. No. IFM022-A12”)

Note 1. Model EJX Series Differential, gauge

and absolute pressure transmitters withoptional code /FS1 are applicable for usein hazardous locations.

• Applicable Standard: FM3600, FM3610,FM3611, FM3810

• Intrinsically Safe for Class I, Division 1,Groups A, B, C & D. Class II, Division 1,Groups E, F & G and Class III, Division 1,Class I, Zone 0 in Hazardous Locations, AExia IIC

• Nonincendive for Class I, Division 2, Groups

A, B, C & D. Class II, Division 2, Groups F &G and Class III, Division 1, Class I, Zone 2,Groups IIC, in Hazardous Locations.

• Outdoor hazardous locations, NEMA 4X.• Temperature Class: T4• Ambient temperature: –60* to 60°C

* –15°C when /HE is specied.

Note 2. Entity Parameters• Intrinsically Safe Apparatus Parameters [Groups A, B, C, D, E, F and G]

Vmax = 30 V Ci = 6 nFImax = 200 mA Li = 0 µHPmax = 1 W

* Associated Apparatus Parameters (FM approved barriers)

Voc ≤ 30 V Ca > 6 nFIsc ≤ 200 mA La > 0 µHPmax ≤ 1W

• Intrinsically Safe Apparatus Parameters [Groups C, D, E, F and G]

Vmax = 30 V Ci = 6 nFImax = 225 mA Li = 0 µH

Pmax = 1 W* Associated Apparatus Parameters (FM approved barriers)

Voc ≤ 30 V Ca > 6 nFIsc ≤ 225 mA La > 0 µHPmax ≤ 1 W

• Entity Installation Requirements Vmax ≥ Voc or Uo or Vt, Imax ≥ Isc or Io or It,

Pmax (or Po) ≤ Pi, Ca or Co ≥ Ci + Ccable, La or Lo ≥ Li + Lcable

Note 3. Installation• Barrier must be installed in an enclosure that

meets the requirements of ANSI/ISA S82.01.• Control equipment connected to barrier must

not use or generate more than 250 V rms orV dc.

• Installation should be in accordance with

ANSI/ISA RP12.6 “Installation of IntrinsicallySafe Systems for Hazardous (Classied)Locations” and the National Electric Code(ANSI/NFPA 70).

• The conguration of associated apparatusmust be FMRC Approved.

• Dust-tight conduit seal must be used wheninstalled in a Class II, III, Group E, F and Genvironments.

• Associated apparatus manufacturer’sinstallation drawing must be followed when

installing this apparatus.• The maximum power delivered from thebarrier must not exceed 1 W.

• Note a warning label worded“SUBSTITUTION OF COMPONENTS MAYIMPAIR INTRINSIC SAFETY,” and “INSTALLIN ACCORDANCE WITH DOC. No. IFM022- A12”

Note 4. Maintenance and Repair • The instrument modication or parts

replacement by other than authorized

representative of Yokogawa ElectricCorporation is prohibited and will voidFactory Mutual Intrinsically safe andNonincendive Approval.

F0203-1.ai

Class I, II, III, Division 1,

Groups A, B, C, D, E, F, G

Class 1, Zone 0 in

Hazardous (Classified)

Locations AEx ia IIC

EJX Series Pressure

Transmitters Safety Barrier

Supply

Hazardous Location Nonhazardous Location

General

Purpose

Equipment

+

–

+

–

+

–

+

–

[Intrinsically Safe]




IM 01C25K01-01E

F0203-2.ai

EJX Series PressureTransmitters

Supply


+

–

+

–

Class I, II, Division 2,

Groups A, B, C, D, F, G

Class III, Division 1.

Class 1, Zone 2, Group IIC,

in Hazardous (Classified)

Locations

Not Use

Safety Barrier

[Nonincendive]

General

PurposeEquipment

b. FM Explosionproof Type

Caution for FM explosionproof type.

Note 1. Model EJX Series pressure transmitterswith optional code /FF1 are applicable foruse in hazardous locations.

• Applicable Standard: FM3600, FM3615,FM3810, ANSI/NEMA 250

• Explosionproof for Class I, Division 1,Groups B, C and D.

• Dust-ignitionproof for Class II/III, Division 1,Groups E, F and G.

• Enclosure rating: NEMA 4X.• Temperature Class: T6• Ambient Temperature: –40* to 60°C


• Supply Voltage: 42 V dc max.• Output signal: 4 to 20 mA

Note 2. Wiring• All wiring shall comply with National Electrical

Code ANSI/NFPA70 and Local ElectricalCodes.

• When installed in Division 1, “FACTORYSEALED, CONDUIT SEAL NOTREQUIRED.”

Note 3. Operation• Keep the “WARNING” nameplate attached to

the transmitter. WARNING: OPEN CIRCUIT BEFORE

REMOVING COVER. FACTORY SEALED,CONDUIT SEAL NOT REQUIRED.INSTALL IN ACCORDANCE WITH THEUSERS MANUAL IM 01C25.

• Take care not to generate mechanicalsparking when accessing to the instrumentand peripheral devices in a hazardouslocation.


replacement by other than authorizedrepresentative of Yokogawa ElectricCorporation is prohibited and will voidFactory Mutual Explosionproof Approval.

c. FM Intrinsically Safe Type/FMExplosionproof Type

Model EJX Series pressure transmitters withoptional code /FU1 or /V1U can be selected thetype of protection (FM Intrinsically Safe or FMExplosionproof) for use in hazardous locations.

Note 1. For the installation of this transmitter,once a particular type of protection isselected, any other type of protectioncannot be used. The installation must be inaccordance with the description about the

type of protection in this instruction manual.

Note 2. In order to avoid confusion, unnecessarymarking is crossed out on the label otherthan the selected type of protection whenthe transmitter is installed.

2.9.2 CSA Certication

a. CSA Intrinsically Safe Type

Caution for CSA Intrinsically safe andnonincendive type. (Following contents refer to

“DOC No. ICS013-A13”)Note 1. Model EJX Series differential, gauge,

and absolute pressure transmitters withoptional code /CS1 are applicable for usein hazardous locations

Certicate: 1606623[For CSA C22.2]• Applicable Standard: C22.2 No.0, C22.2

No.0.4, C22.2 No.25, C22.2 No.94, C22.2No.157, C22.2 No.213, C22.2 No.1010.1

• Intrinsically Safe for Class I, Division 1,

Groups A, B, C & D, Class II, Division 1,Groups E, F & G, Class III, Division 1

• Nonincendive for Class I, Division 2, Groups A, B, C & D, Class II, Division 2, Groups E, F& G, Class III, Division 1

• Enclosure: Type 4X• Temp. Code: T4• Amb. Temp.: –50* to 60°C


• Process Temperature: 120°C max.




IM 01C25K01-01E

[For CSA E60079]• Applicable Standard: CAN/CSA E60079-0,

CAN/CSA E60079-11, CAN/CSA E60079-15,IEC 60529:2001-02

• Ex ia IIC T4, Ex nL IIC T4• Ambient Temperature: –50* to 60°C


• Max. Process Temp.: 120°C• Enclosure: IP66 and IP67

Note 2. Entity Parameters• Intrinsically safe ratings are as follows: Maximum Input Voltage (Vmax/Ui) = 30 V Maximum Input Current (Imax/Ii) = 200 mA Maximum Input Power (Pmax/Pi) = 0.9 W Maximum Internal Capacitance (Ci) = 10 nF Maximum Internal Inductance (Li) = 0 µH• Type "n" or Nonincendive ratings are as

follows:

Maximum Input Voltage (Vmax/Ui) = 30 V Maximum Internal Capacitance (Ci) = 10 nF Maximum Internal Inductance (Li) = 0 µH• Installation Requirements Uo ≤ Ui, Io ≤ Ii, Po ≤ Pi,

Co ≥ Ci + Ccable, Lo ≥ Li + Lcable Voc ≤ Vmax, Isc ≤ Imax,

Ca ≥ Ci + Ccable, La ≥ Li + Lcable Uo, Io, Po, Co, Lo, Voc, Isc, Ca and La are

parameters of barrier.

Note 3. Installation

• In any safety barreir used output currentmust be limited by a resistor 'R' such thatIo=Uo/R or Isc=Voc/R.

• The safety barrier must be CSA certied.• Input voltage of the safety barrier must be

less than 250 Vrms/Vdc.• Installation should be in accordance with

Canadian Electrical Code Part I and LocalElectrical Code.

• Dust-tight conduit seal must be used wheninstalled in Class II and III environments.

• The instrument modication or partsreplacement by other than authorizedrepresentative of Yokogawa ElectricCorporation and Yokogawa Corporationof America is prohibited and will voidCanadian Standards Intrinsically safe andnonincendive Certication.

F0204-1.ai

Class I, II, III, Division 1,


EJX Series Pressure

Transmitters Safety Barrier

Supply


General

Purpose

Equipment

+

–

+

–

+

–

+

–


Group IIC, Zone 0

F0204-2.ai

EJX Series Pressure

Transmitters

Supply


+ –

+ –

Class I, II, Division 2,


Class III, Division 1.

Not Use

Safety Barrier

[Nonincendive]

CSA Certified

Equipment

([nL] or

nonincendive)EJX Series Pressure

Transmitters

Group IIC, Zone 2

b. CSA Explosionproof Type

Caution for CSA explosionproof type.

Note 1. Model EJX Series pressure transmitterswith optional code /CF1 are applicable foruse in hazardous locations:

• Certicate: 2014354• Applicable Standard: C22.2 No.0,

C22.2 No.0.4, C22.2 No.0.5, C22.2 No.25,C22.2 No.30, C22.2 No.94,C22.2 No.61010-1-04, C22.2 No.60079-0,C22.2 No.60079-1

• Explosion-proof for Class I, Groups B, C andD.

• Dustignition-proof for Class II/III, Groups E, Fand G.

• Enclosure: TYPE 4X• Temperature Code: T6...T4

• Ex d IIC T6...T4• Enclosure: IP66 and IP67• Maximum Process Temperature: 120°C (T4),

100°C (T5), 85°C (T6)• Ambient Temperature: –50* to 75°C (T4),

–50* to 80°C (T5), –50* to 75°C (T6)* –15°C when /HE is specied.

• Supply Voltage: 42 V dc max.• Output Signal: 4 to 20 mA dc




IM 01C25K01-01E

Note 2. Wiring• All wiring shall comply with Canadian

Electrical Code Part I and Local ElectricalCodes.

• In hazardous location, wiring shall be inconduit as shown in the gure.

• WARNING:

A SEAL SHALL BE INSTALLED WITHIN50cm OF THE ENCLOSURE.

UN SCELLEMENT DOIT ÊTRE INSTALLÉ ÀMOINS DE 50cm DU BOÎTIER.

• WARNING:WHEN INSTALLED IN CL.I, DIV 2, SEALNOT REQUIRED.

UNE FOIS INSTALLÉ DANS CL I, DIV 2, AUCUN JOINT N'EST REQUIS.

Non-hazardousLocationEquipment

42 V DC Max.4 to 20 mA DCSignal

Non-HazardousLocations

Hazardous Locations Division 1

50 cm Max.

Sealing FittingConduit

F0205-1.ai

S U P P L Y

P U L S E

C H E C K

A L A R M

EJX Series

Non-HazardousLocations

Hazardous Locations Division 2

Non-hazardousLocation

Equipment

42 V DC Max.4 to 20 mA DCSignal

Sealing Fitting

S U P P L Y

P U L S E

C H E C K

A LA R M

EJX SeriesF0205-2.ai

• All wiring shall comply with local installationrequirements and local electrical code.

• In hazardous locations, the cable entrydevices shall be of a certied ameproof

type, suitable for the conditions of use andcorrectly installed.• Unused apertures shall be closed with

suitable ameproof certied blankingelements. (The plug attached is ameproofcertied.)

Note 3. Operation• WARNING:

AFTER DE-ENERGIZING, DELAY 5MINUTES BEFORE OPENING. APRÉS POWER-OFF, ATTENDRE 5

MINUTES AVANT D'OUVRIR.

• WARNING:WHEN AMBIENT TEMPERATURE ≥ 65°C,USE THE HEAT-RESISTING CABLES ≥90°C.

QUAND LA TEMPÉRATURE AMBIANTE≥ 65°C, UTILISEZ DES CÂBLESRÉSISTANTES Á LA CHALEUR ≥ 90°C.

• Take care not to generate mechanicalsparking when accessing to the instrumentand peripheral devices in a hazardouslocation.


replacement by other than authorizedrepresentative of Yokogawa ElectricCorporation and Yokogawa Corporation of America is prohibited and will void CanadianStandards Explosionproof Certication.

c CSA Intrinsically Safe Type/CSA

Explosionproof Type

Model EJX Series pressure transmitters withoptional code /CU1 or /V1U can be selected thetype of protection (CSA Intrinsically Safe or CSAExplosionproof) for use in hazardous locations.

Note 1. For the installation of this transmitter,once a particular type of protection isselected, any other type of protectioncannot be used. The installation must be in

accordance with the description about thetype of protection in this instruction manual.


2.9.3 CENELEC ATEX (KEMA)Certication

(1) Technical Data

a. CENELEC ATEX (KEMA) Intrinsically Safe

Type

Caution for CENELEC ATEX (KEMA)Intrinsically safe type.

Note 1. Model EJX Series pressure transmitterswith optional code /KS2 for potentiallyexplosive atmospheres:

• No. KEMA 03ATEX1544 X• Applicable Standard:

EN 50014:1997, EN 50020:2002,

EN 50284:1999, EN 50281-1-1:1998




IM 01C25K01-01E

• Type of Protection and Marking code:EEx ia IIC T4

• Group: II• Category: 1GD• Ambient Temperature for gas-proof:

–50* to 60°C* –15°C when /HE is specied.

• Process Temperature (Tp.): 120°C max.• Maximum Surface Temperature for dust-

proof:T85°C (Tamb.: –40* to 60°C, Tp.: 80°C)T100°C (Tamb.: –40* to 60°C, Tp.: 100°C)T120°C (Tamb.: –40* to 60°C, Tp.: 120°C)* –15°C when /HE is specied.

• Enclosure: IP66 and IP67

Note 2. Electrical Data• In type of explosion protection intrinsic

safety EEx ia IIC only for connection to a

certied intrinsically safe circuit with followingmaximum values: Ui = 30 V Ii = 200 mA Pi = 0.9 W Effective internal capacitance; Ci = 10 nF Effective internal inductance; Li = 0 mH

Note 3. Installation• All wiring shall comply with local installation

requirements. (Refer to the installationdiagram)


replacement by other than authorizedrepresentative of Yokogawa ElectricCorporation is prohibited and will void KEMAIntrinsically safe Certication.

Note 5. Special Conditions for Safe Use• In the case where the enclosure of the

Pressure Transmitter is made of aluminium,if it is mounted in an area where the use ofcategory 1 G apparatus is required, it must

be installed such, that, even in the event ofrare incidents, ignition sources due to impactand friction sparks are excluded.

Transmitter

Supply Safety Barrier *1

Nonhazardous Location

[Installation Diagram]

Hazardous Location

+

–

+

–

F0206.ai

*1: In any safety barriers used the output current must belimited by a resistor “R” such that Imaxout-Uz/R.

WARNING

To satisfy IP66 or IP67, apply waterproof glandsto the electrical connection port.

b. CENELEC ATEX (KEMA) Flameproof Type

Caution for CENELEC ATEX (KEMA)ameproof type.

Note 1. Model EJX Series pressure transmitterswith optional code /KF21 for potentiallyexplosive atmospheres:

• No. KEMA 07ATEX0109• Applicable Standard: EN 60079-0:2006,

EN 60079-1:2004, EN 61241-0:2006,EN 61241-1:2004

• Type of Protection and Marking Code: Ex dIIC T6...T4, Ex tD A21 IP6x T85, T100, T120

• Group: II• Category: 2G, 2D• Enclosure: IP66 and IP67• Temperature Class for gas-poof:

T6, T5, and T4• Ambient Temperature for gas-proof:

–50* to 75°C (T6), –50* to 80°C (T5), and –50* to 75°C (T4)* –15°C when /HE is specied.

• Maximum Process Temperature (Tp.) for

gas-proof: 85°C (T6), 100°C (T5), and 120°C (T4)• Maximum Surface Temperature for dust-

proof:T85°C (Tamb.: –40* to 40°C, Tp.: 80°C)T100°C (Tamb.: –40* to 60°C, Tp.: 100°C)T120°C (Tamb.: –40* to 80°C, Tp.: 120°C)* –15°C when /HE is specied.




IM 01C25K01-01E

Note 2. Electrical Data• Supply voltage: 42 V dc max.• Output signal: 4 to 20 mA


requirement.

• The cable entry devices shall be of a certiedameproof type, suitable for the conditions ofuse.

Note 4. Operation• Keep the “WARNING” label attached to the

transmitter. WARNING: AFTER DE-ENERGIZING,

DELAY 5 MINUTES BEFORE OPENING.WHEN THE AMBIENT TEMP.≥65°C, USEHEAT-RESISTING CABLES≥90°C.

• Take care not to generate mechanical

sparking when accessing to the instrumentand peripheral devices in a hazardouslocation.

Note 5. Maintenance and Repair • The instrument modication or part

replacement by other than an authorizedrepresentative of Yokogawa ElectricCorporation is prohibited and will void KEMAFlameproof Certication.

WARNING

To satisfy IP66 or IP67, apply waterproof glandsto the electrical connection port.

c. CENELEC ATEX (KEMA) Intrinsically Safe

Type/CENELEC ATEX (KEMA) Flameproof

Type/CENELEC ATEX Type n

Model EJX Series pressure transmitters withoptional code /KU21 or /V1U can be selectedthe type of protection CENELEC ATEX (KEMA)

Intrinsically Safe, Flameproof or CENELEC ATEX Type n for use in hazardous locations.

Note 1. For the installation of this transmitter,once a particular type of protection isselected, any other type of protectioncannot be used. The installation must be inaccordance with the description about thetype of protection in this user’s manual.


CENELEC ATEX Type of Protection “n”

• Applicable Standard: EN 60079-15

• Referential Standards: IEC60079-0,IEC 60079-11

• Type of Protection and Marking Code:Ex nL IIC T4

• Temperature Class: T4• Enclosure: IP66 and IP67• Process Temperature: 120°C max.• Ambient Temperature: –50* to 60°C


Note 1. Electrical Data Ui = 30 V

Effective internal capacitance; Ci = 10 nF Effective internal inductance; Li = 0 mH


requirements. (refer to the installationdiagram)


replacement by other than authorizedrepresentative of Yokogawa ElectricCorporation is prohibited and will void Type

of Protection “n”.

[Ex nL]

Power Supply

(Zone 2 only)

Transmitter

Supply

Nonhazardous Location

[Installation Diagram]

Hazardous Location

+

–

+

–

F0207.ai

Ratings of the Power Supply as follows;

Maximum Voltage: 30 V




IM 01C25K01-01E

(2) Electrical Connection

A mark indicating the electrical connection typeis stamped near the electrical connection port.These marks are as followed.

F0208.ai

Location of the mark

or

w

M

A

(3) Installation

WARNING

• All wiring shall comply with local installationrequirements and the local electrical code.

• There is no need for conduit seal in Division1 and Division 2 hazardous locationsbecause this product is sealed at the factory.

(4) Operation

WARNING

• OPEN CIRCUIT BEFORE REMOVINGCOVER. INSTALL IN ACCORDANCE WITHTHIS USER’S MANUAL

• Take care not to generate mechanicalsparking when access to the instrument andperipheral devices in a hazardous location.

(5) Maintenance and Repair

WARNING

The instrument modication or parts replacementby other than an authorized Representative ofYokogawa Electric Corporation is prohibited andwill void the certication.

(6) Name Plate

Name plate

Tag plate for flameproof type

Tag plate for intrinsically safe type

Tag plate for type n protection

F0209.ai

D

D

AFTER DE-ENERGIZING, DELAY 5 MINUTESBEFORE OPENING.WHEN THE AMBIENT TEMP. ≥ 65°C,USE THE HEAT-RESISTING CABLES ≥ 90°C

No. KEMA 07ATEX0109Ex d IIC T6...T4, Ex tD A21, IP6XEnlcosure : IP66, IP67TEMP. CLASS T6 T5 T4MAX PROCESS TEMP.(Tp.) 85 100 120 °CTamb. -50(-15) to 75 80 75 °CT85°C(Tamb.:40°C, Tp.:80°C),T100°C(Tamb.:60°C, Tp.:100°C),T120°C(Tamb.:80°C, Tp.:120°C) Min.Tamb.:-40(-15)°C(for Dust)

No. KEMA 03ATEX1544 XEEx ia IIC T4IP66 and IP67Tamb. -50(-15) to 60°C MIN. Tamb.:-40(-15)°C(for DUST)MAX. PROCESS TEMP.(Tp.) 120°CT85°C(Tp.:80°C), T100°C(Tp.:100°C), T120°C(Tp.:120°C)Ui=30V, Ii=200mA , Pi=0.9W, Ci =10nF, Li= 0

WARNING

EEx nLIIC T4IP66 and IP67Tamb. -50(-15) to 60°CMAX. PROCESS TEMP.(Tp.) 120°CUi=30V, Ci=10nF, Li=0

MODEL: Specied model code.STYLE: Style code.SUFFIX: Specied sufx code.

SUPPLY: Supply voltage.OUTPUT: Output signal.MWP: Maximum working pressure.CAL RNG: Specied calibration range.NO.: Serial number and year of production*1.TOKYO 180-8750 JAPAN:The manufacturer name and the address*2.

*1: The rst digit in the nal three numbers of the serialnumber appearing after “NO.” on the nameplateindicates the year of production. The following is anexample of a serial number for a product that wasproduced in 2010:

The year 2010

91K819857 032

*2: “180-8750” is a zip code which represents thefollowing address.

2-9-32 Nakacho, Musashino-shi, Tokyo Japan

2.9.4 IECEx Certication

Model EJX Series pressure transmitters withoptional code /SU2 can be selected the type ofprotection (IECEx Intrinsically Safe/type n orameproof) for use in hazardous locations.




IM 01C25K01-01E

Note 1. For the installation of this transmitter,once a particular type of protection isselected, any other type of protectioncannot be used. The installation must be inaccordance with the description about thetype of protection in this instruction manual.


a. IECEx Intrinsically Safe Type / type n

Caution for IECEx Intrinsically safe and type n.

Note 1. Model EJX Series differential, gauge,and absolute pressure transmitters withoptional code /SU2 are applicable for usein hazardous locations

• No. IECEx CSA 05.0005• Applicable Standard: IEC 60079-0:2000,

IEC 60079-11:1999, IEC 60079-15:2001• Ex ia IIC T4, Ex nL IIC T4• Ambient Temperature: –50* to 60°C


• Max. Process Temp.: 120°C• Enclosure: IP66 and IP67

Note 2. Entity Parameters• Intrinsically safe ratings are as follows:

Maximum Input Voltage (Vmax/Ui) = 30 VMaximum Input Current (Imax/Ii) = 200 mA

Maximum Input Power (Pmax/Pi) = 0.9 WMaximum Internal Capacitance (Ci) = 10 nFMaximum Internal Inductance (Li) = 0 µH

• Type "n" ratings are as follows:Maximum Input Voltage (Vmax/Ui) = 30 VMaximum Internal Capacitance (Ci) = 10 nFMaximum Internal Inductance (Li) = 0 µH

• Installation RequirementsUo ≤ Ui, Io ≤ Ii, Po ≤ Pi,Co ≥ Ci + Ccable, Lo ≥ Li + LcableVoc ≤ Vmax, Isc ≤ Imax,

Ca ≥ Ci + Ccable, La ≥ Li + LcableUo, Io, Po, Co, Lo, Voc, Isc, Ca and La areparameters of barrier.

Note 3. Installation• In any safety barrier used output current

must be limited by a resistor 'R' such thatIo=Uo/R.

• The safety barrier must be IECEx certied.• Input voltage of the safety barrier must be

less than 250 Vrms/Vdc.

• The instrument modication or partsreplacement by other than authorizedrepresentative of Yokogawa ElectricCorporation and will void IECEx Intrinsicallysafe and type n certication.

F0210-1.ai

EJX Series Pressure

Transmitters

IECEx certified

Safety Barrier

Supply


General

Purpose

Equipment

+

–

+

–

+

–

+

–


Group IIC, Zone 0

F0210-2.ai

EJX Series Pressure

Transmitters

Supply


+

–

+

–

Not Use

Safety Barrier

[type n]

IECEx Certified

Equipment [nL]EJX Series Pressure

Transmitters

Group IIC, Zone 2

b. IECEx Flameproof Type

Caution for IECEx ameproof type.

Note 1. Model EJX Series pressure transmitters

with optional code /SF2 or /SU2 areapplicable for use in hazardous locations:

• No. IECEx CSA 07.0008• Applicable Standard: IEC60079-0:2004,

IEC60079-1:2003• Flameproof for Zone 1, Ex d IIC T6...T4• Enclosure: IP66 and IP67• Maximum Process Temperature: 120°C (T4),

100°C (T5), 85°C (T6)• Ambient Temperature: –50* to 75°C (T4),

–50* to 80°C (T5), –50* to 75°C (T6)* –15°C when /HE is specied.

• Supply Voltage: 42 V dc max.• Output Signal: 4 to 20 mA dc

Note 2. Wiring• In hazardous locations, the cable entry

devices shall be of a certied ameprooftype, suitable for the conditions of use andcorrectly installed.

• Unused apertures shall be closed withsuitable ameproof certied blankingelements.




IM 01C25K01-01E

Note 3. Operation• WARNING:

AFTER DE-ENERGIZING, DELAY 5MINUTES BEFORE OPENING.

• WARNING:WHEN AMBIENT TEMPERATURE ≥ 65°C,USE THE HEAT-RESISTING CABLES ≥

90°C.• Take care not to generate mechanical

sparking when accessing to the instrumentand peripheral devices in a hazardouslocation.


replacement by other than authorizedrepresentative of Yokogawa ElectricCorporation is prohibited and will void IECExCertication.

2.10 EMC Conformity Standards

EN61326-1 Class A, Table2 (For use in industriallocations)EN61326-2-3

CAUTION

• This instrument is a Class A product,and it is designed for use in the industrialenvironment.Please use this instrument in the industrialenvironment only.

• To meet EMC regulations, Yokogawarecommends that customers run signalwiring through metal conduits or useshielded twisted-pair cabling when installingEJX series transmitters in a plant.

2.11 Pressure Equipment

Directive (PED)(1) General

EJX Series pressure transmitters are categorizedas piping under the pressure accessoriessection of directive 97/23/EC, whichcorresponds to Article 3, Paragraph 3 of PED,denoted as Sound Engineering Practice (SEP).

(2) Technical Data

Article 3, Paragraph 3 of PED, denoted asSound Engineering Practice (SEP).

(3) Operation

CAUTION

• The temperature and pressure of uid shouldbe maintained at levels that are consistentwith normal operating conditions.

• The ambient temperature should bemaintained at a level that is consistent withnormal operating conditions.

• Please take care to prevent water hammerand the like from inducing excessivepressures in pipes and valves. If phenomenaare likely, install a safety valve or take

some other appropriate measure to preventpressure from exceeding PS.• Take appropriate measures at the device or

system level to protect transmitters if they areto be operated near an external heat source.

2.12 Low Voltage Directive

Applicable standard: EN61010-1

(1) Pollution Degree 2

"Pollution degree" describes the degree towhich a solid, liquid, or gas which deterioratesdielectric strength or surface resistivity isadhering. " 2 " applies to normal indooratmosphere. Normally, only non-conductivepollution occurs. Occasionally, however,temporary conductivity caused by condensationmust be expected.

(2) Installation Category I

"Overvoltage category (Installation category)"describes a number which denes a transient

overvoltage condition. It implies the regulationfor impulse withstand voltage. " I " applies toelectrical equipment which is supplied from thecircuit when appropriate transient overvoltagecontrol means (interfaces) are provided.



<3. Component Names> 3-1

IM 01C25K01-01E

3. Component Names

HIGH LOW

Burnout DirectionSwitch Position

Burnout direction switch

Write protection switch

BO H L

WR E D

H L H L

Burnout direction switch (BO)

Burnout DirectionF0301.ai

Write ProtectionSwitch Position

H L

E D

H L

E D

Write Protection

Hardware write protection switch (WR)

YES(Write disabled)

NO(Write enabled)

Vertical impulse piping type

Pressure-detector section

Cover flange

Terminal box cover

Horizontal impulse piping type

External indicator conduit connection (Note 1)

Vent plug

Drain plug

Transmitter section

Integralindicator (Note 1)

Mounting screw

Range-settingswitch (Note 1)

(See section 7.6)

Amplifier Cover

CPU assembly

Zero-adjustment

screw

Conduitconnection

Process connector

Process connector

Process connection

Processconnection

(Note 2)

Manifold

Slide switch

Note 1: See subsection 9.2, “Model and Sufx Codes,” for details.Note 2: Applicable for BRAIN/HART communication type. Set the switches as shown in the gure above to set the burn-out directionand write protection. The Burnout switch is set to the H side for delivery (unless option code /C1 or /C2 is specied in the order),and the hardware write protection switch is set to E side. The setting of the switches can be conrmed via communication. Anexternal zero adjustment screw can only be disabled by communication. To disable the screw, set a parameter before activatingthe hardware write protect function. See each communication manual.

Figure 3.1 Component Names

Table 3.1 Display Symbol

Display Symbol Meaning of Display Symbol

Display mode is ‘square root’. (Display is not lit when ‘linear’ mode.)

The output signal being zero-adjusted is increasing.

The output signal being zero-adjusted is decreasing.

F0302.ai

Write protect function is enabled.



<4. Installation> 4-1

IM 01C25K01-01E

4. Installation

4.1 Precautions

Before installing the transmitter, read the cautionarynotes in section 2.4, “Selecting the Installation

Location.” For additional information on theambient conditions allowed at the installationlocation, refer to subsection 9.1 “StandardSpecications.”

IMPORTANT

• When welding piping during construction,take care not to allow welding currents toow through the transmitter.

• Do not step on this instrument afterinstallation.

4.2 Mounting

The transmitter can be mounted on a nominal50 mm (2-inch) pipe using the mountingbracket supplied, as shown in gure 4.1 and4.2 The transmitter can be mounted on either ahorizontal or a vertical pipe.

When mounting the bracket on the transmitter,tighten the (four) bolts that hold the transmitter

with a torque of approximately 39 N·m 4kgf·m. The transmitter is shipped with the manifold setup as per the order specications.

For correct ow measurement, the ow pathmust always be lled with uid; otherwise,measurement accuracy cannot be assured.

For the vertical impulse piping type, it isrecommended that the manifold be mountedfacing up for liquid ow measurement; facingdown for gas ow measurement, as shown inFigure 4.2.

Figure 4.1 and 4.2 shows the mounting of thetransmitter for horizontal piping and vertical pipingwith using the mounting bracket.

Horizontal pipe mounting

Vertical pipe mounting


U-bolt nut

Mounting bracket

U-bolt nut

Mounting bracket

50 mm(2-inch) pipe

50 mm(2-inch) pipe

U-bolt

U-bolt

F0401.ai


Figure 4.1 Transmitter Mounting(Horizontal Impulse Piping Type)




IM 01C25K01-01E

F0402.ai

Vertical pipe mounting(Process connector upside)

Vertical pipe mounting(Process connector downside)



Mounting bracket

Mounting bracket

U-bolt nut

U-bolt nut

U-bolt

U-bolt

50 mm(2-inch) pipe

50 mm(2-inch) pipe

Figure 4.2 Transmitter Mounting(Vertical Impulse Piping Type)

4.3 Changing the manifold

assembly

The transmitter is shipped with the manifoldassembly specied at the time of ordering. Tochange the manifold assembly, the drain (vent) plugmust be repositioned.

To reposition a drain (vent) plug, use a wrench toslowly and gently unscrew it. Then, remove andremount it on the opposite side. Wrap sealing tapearound the drain (vent) plug threads (*1 in the gurebelow), and apply a lubricant to the threads of thedrain (vent) screw(s) (*2 below). To tighten the drain(vent) plugs, apply a torque of 34 to 39 N·m 3.5 to 4kgf·m. Manifold bolts are to be tightened uniformlyto a torque of 39 to 49 N·m 4 to 5 kgf·m.

F0403.ai

*1

*2Drain/vent plug

Note: For a horizontal impulsepiping type, moving theManifold Assembly fromthe front side to the

back cannot be made.



Bolt

Process connector

gasket

Manifold

Figure 4.3 Changing Manifold Assembly

4.4 Swapping the High/Low-

pressure Side Connection

This procedure can be applied only to a transmitterwith a vertical impulse piping type.

The procedure below can be used to turn thepressure detector assembly 180°. Performthis operation in a maintenance shop with thenecessary tools laid out and ready for use, and theninstall the transmitter in the eld after making thechange.

1) Use an Allen wrench (JIS B4648, nominal 2.5mm) to remove the two setscrews at the jointbetween the pressure-detector section andtransmitter section.

2) Leaving the transmitter section in position,rotate the pressure-detector section 180°.




IM 01C25K01-01E

3) Tighten the two setscrews to x the pressure-detector section and transmitter sectiontogether (at a torque of 1.5 N·m).

Reposition the manifold assembly and drain(vent) plugs to the opposite side as described insubsection 4.3.

F0404.ai

SetscrewManifold

Manifold

Before After rotating 180°

Figure 4.4 Before and After Modication

4.5 Rotating Transmitter Section

The transmitter section can be rotatedapproximately 360° (180° to either direction or360° to one direction from the original position atshipment, depending on the conguration of theinstrument.) It can be xed at any angle withinabove range.

1) Remove the two setscrews that fasten thetransmitter section and capsule assembly,

using the Allen wrench.2) Rotate the transmitter section slowly and stop itat designated position.

3) Tighten the two setscrews to a torque of 1.5N·m.

IMPORTANT

Do not rotate the transmitter section more thanthe above limit.

F0405.ai




Transmitter section

Rotate 0 to ±180° segments

Rotate 0 to ±180° segments

Transmitter section


Conduit connection

Conduit connection

Zero-adjustment screw

Stopper

Figure 4.5 Rotating Transmitter Section(Left Side High Pressure Type)

4.6 Changing the Direction ofIntegral Indicator

IMPORTANT

Always turn OFF power, release pressure andremove a transmitter to non-hazardous areabefore disassembling and reassembling anindicator.

An integral indicator can be installed in the followingthree directions. Follow the instructions in section

8.4 for removing and attaching the integral indicator.

F0406.ai

Figure 4.6 Integral Indicator Direction



<5. Installing Impulse Piping> 5-1

IM 01C25K01-01E

5. Installing Impulse Piping

5.1 Process Piping Installation

Precautions

The manifold contains a small-bore orice. Forthe transmitter of a high pressure connection rightside, the orice is placed facing such a directionas to enable normal ow measurement when uidis owed from right to left (as viewed from thefront). If the orice is removed from the manifold,it must be replaced facing the correct direction.(For disassembly and reassembly procedures, seeSubsection 8.4.4)

Pay careful attention to the following points whenrouting the process piping and connection theprocess piping to the transmitter.

5.1.1 Connecting Process Piping to the

Transmitter

(1) Conrming the Process Fluid Flow

Direction (Figure 5.1)

The mark “ ” on the manifold indicates thedirection in which the process uid is owed (fromright to left). When connecting the process pipingto the process connector, conrm the process uidow direction.

F0501.ai

Flow direction(from right to left)

Manifold

Orifice name plate

Process connector

(low pressure side)Process connector

(high pressure side)

Process connection

(outflow side)

Process connection

(inflow side)

Bolt

Figure 5.1 Manifold and Flow Direction Indication

(2) Tightening the Process Connector

Mounting Bolts

The transmitter is shipped with the process

connector mounting bolts only loosely tightened. After connecting the process piping, tighten thesebolts uniformly to prevent leaks with a torque of 39to 49 N·m 4 to 5 kgf·m.

(3) Removing the Process Connector Port

Dustproof Cap

The process connector port threads are coveredwith a plastic cap to exclude dust. This cap must beremoved before connecting the piping. (Be carefulnot to damage the threads when removing this cap.

Never insert a screwdriver or other tool between thecap and port threads to remove the cap.)

5.1.2 Routing the Process Piping

(1) Relationship between Process Fluid

and Manifold Locations (For the vertical

impulse piping type)

If condensate (or gas) generated in the processpiping were allowed to accumulate, then it would benecessary to remove it periodically by opening thedrain (or vent) plug. However, this would generate atransient disturbance in the pressure measurement.Therefore, the process piping must be routed sothat any condensate (or gas) generated in theprocess piping will not accumulate in the pressure-sensing assembly of the transmitter.

NOTE

• If the process uid is a gas, then as a rule themanifold must be located at the downside ofthe pressure-sensing assembly. (Figure 5.2)

• If the process uid is a liquid, then as a rulethe manifold must be located at the upside ofthe pressure-sensing assembly. (Figure 5.3)

(2) Pipe Size for Process Piping

Use a 15 mm (1/2-inch) pipe for process pipingconnection to the process connector.



<5. Installing Impulse Piping> 5-2

IM 01C25K01-01E

(3) Preventing Freezing

If there is any risk that the process uid in thetransmitter pressure-sensing assembly could freezeor solidify, use a steam jacket or heater to maintainthe temperature of the uid.

F0502.ai

Manifold

Figure 5.2 Manifold Location at the Downside (forGas Flow Measurement)

F0503.ai

Manifold

Figure 5.3 Manifold Location at the Upside (forLiquid Flow Measurement)

5.2 Process Piping Connection

Examples

Figure 5.4 shows examples of typical processpiping connections. Before connecting thetransmitter to the process, study the transmitterinstallation location, the process piping layout,and the characteristics of the process uid(corrosiveness, toxicity, ammability, etc.), in orderto make appropriate changes and additions to theconnection congurations.

Note the following points when referring to thesepiping examples.

• The high pressure connecting port on the

transmitter is shown on the right (as viewedfrom the front).

• The transmitter process piping connection isshown for a vertical impulse piping connectionconguration in which the direction of processow is from right to left.

• The process piping material used mustbe compatible with the process pressure,temperature, and other conditions.

• A variety of process piping-mounted stopvalves are available according to the typeof connection (anged, screwed, welded),construction (globe, gate, or ball valve),temperature and pressure. Select the type ofvalve most appropriate for the application.

F0504.ai

Gas flow measurement

Liquid flow measurement

Union or flange

Union or flange

Stop valve

Stop valve

Manifold

Manifold

Process piping

Process piping

Figure 5.4 Process Piping Connection Examples



<6. Wiring> 6-1

IM 01C25K01-01E

6. Wiring

6.1 Wiring Precautions

IMPORTANT

• Lay wiring as far as possible from electricalnoise sources such as large capacitytransformers, motors, and power supplies.

• Remove the electrical connection dust capbefore wiring.

• All threaded parts must be treated withwaterproong sealant. (A non-hardeningsilicone group sealant is recommended.)

• To prevent noise pickup, do not pass signaland power cables through the same ducts.

• Explosion-protected instruments must

be wired in accordance with specicrequirements (and, in certain countries,legal regulations) in order to preserve theeffectiveness of their explosion-protectedfeatures.

• The terminal box cover is locked by an Allen head bolt (a shrouding bolt) on ATEXameproof type transmitters. When theshrouding bolt is driven clockwise usingan Allen wrench, it goes in. The cover lockcan then be released and the cover canbe opened by hand. See subsection 8.4“Disassembly and Reassembly” for details.

• Plug and seal an unused conduit connection.

6.2 Selecting the Wiring

Materials

(a) Use stranded leadwires or cables which arethe same as or better than 600 V grade PVCinsulated wire (JIS C3307) or its equivalent.

(b) Use shielded wires in areas that are susceptible

to electrical noise.(c) In areas with higher or lower ambient

temperatures, use appropriate wires or cables.(d) In environment where oils, solvents, corrosive

gases or liquids may be present, use wires orcables that are resistant to such substances.

(e) It is recommended that crimp-on solderlessterminal lugs (for 4 mm screws) with insulatingsleeves be used for leadwire ends.

6.3 Connections of External

Wiring to Terminal Box

6.3.1 Power Supply Wiring Connection

Connect the power supply wiring to the SUPPLY +and – terminals. When /AL is specied, also refer tosubsection 6.3.5.

Power supply

–

+Transmitter terminal box

F0601.ai

S U P P L Y

P U L S E

C H E C K

A L A R M

Figure 6.1 Power Supply Wiring Connection

6.3.2 External Indicator Connection

Available only when /AL is not specied.

Connect wiring for external indicators to the CHECK+ and – terminals.

(Note) Use a external indicator whose internal resistance is 10 Ωor less.

Transmitter terminal box

External indicator

F0602.ai

Power supply

–

+

S U P P L Y

P U L S E

C H E C K

A L A R M

Figure 6.2 External Indicator Connection

6.3.3 Communicator Connection

Connect the BT200 or HART275 HHT to theSUPPLY + and – terminals. (Use hooks.)

S U P P L Y

P U L S E

C H E C K

A L A R M


BT200F0603.ai

Power supply

–

+

Ignore the polaritysince the BT200 is

AC-coupled to theterminal box.

Figure 6.3 BT200 Connection



<6. Wiring> 6-2

IM 01C25K01-01E

6.3.4 Check Meter Connection

Available only when /AL is not specied.

Connect the check meter to the CHECK + and – terminals. (Use hooks.)

• A 4 to 20 mA DC output signal from the CHECK

+ and – terminals.(Note) Use a check meter whose internal resistance is 10 Ω orless.

S U P P L Y

P U L S E

C H E C K

A L A R M


F0604.ai

Power supply

–

+Check meter

Figure 6.4 Check Meter Connection

6.3.5 Status Output Connection

When option code /AL is specied, connect theexternal wiring as shown in Figure 6.5.

To congure and activate the process alarmfunction and status output, it is necessary to setsome parameters. Refer to each communicationmanual for procedures.

S U P P L Y

P U L S

E

C H E C K

A L A R M


Magnetic

valve

AC power supply

External power

supply 30V DC,

120mA max

+

– 250Ω

24V DC

Use two-wire separately shielded cables.

Distributor

Shielded cable

F0605.ai

Figure 6.5 Status Output Connection

6.4 Wiring

6.4.1 Loop Conguration

Since the DPharp uses a two-wire transmissionsystem, signal wiring is also used as power wiring.

DC power is required for the transmitter loop. Thetransmitter and distributor are connected as shownbelow.

For details of the power supply voltage and loadresistance, see section 6.6; for communications line

requirements, see section 9.1.

(1) General-use Type and Flameproof Type


Transmitter terminal boxDistributor(Power supply unit)

Receiverinstrument

F0606.ai

S U P P L Y

P U L S E

C H E C K

A L A R M

Figure 6.6 Connection between Transmitter andDistributor

(2) Intrinsically Safe Type

With the intrinsically safe type, a safety barrier mustbe included in the loop.



Distributor(Power supply unit)

Receiverinstrument

Safety barrierF0607.ai

S U P P L Y

P U L S E

C H E C K

A L A R M

Figure 6.7 Connection between Transmitter andDistributor

6.4.2 Wiring Installation

(1) General-use Type and Intrinsically Safe

Type

With the cable wiring, use a metallic conduit orwaterproof glands.

• Apply a non-hardening sealant to the terminalbox connection port and to the threads on theexible metal conduit for waterproong.

F0608.ai

Flexible metal conduit

Wiring metalconduit

Tee

Drain plug

Apply a non-hardeningsealant to the threads for waterproofing.

Figure 6.8 Typical Wiring Using Flexible MetalConduit



<6. Wiring> 6-3

IM 01C25K01-01E

(2) Flameproof Type

Wire cables through a ameproof packing adapter,or use a ameproof metal conduit.

Wiring cable through ameproof packingadapter.

• Apply a non-hardening sealant to the terminal

box connection port and to the threads on theameproof packing adapter for waterproong.

Flameproof packingadapter

Flexible metal conduit

Wiring metalconduit

Tee

Drain plug

Apply a non-hardeningsealant to the threads for waterproofing.

F0609.ai

Figure 6.9 Typical Cable Wiring Using FlameproofPacking Adapter

Flameproof metal conduit wiring• A seal tting must be installed near the terminal

box connection port for a sealed construction.• Apply a non-hardening sealant to the threads of

the terminal box connection port, exible metalconduit and seal tting for waterproong.

F0610.ai

Non-hazardous area

Hazardous area

Flameproof heavy-gaugesteel conduit

Tee

Drain plug

Seal fitting

Gas sealing device

Flameproof flexiblemetal conduit

Apply a non-hardeningsealant to the threadsof these fittings for waterproofing

After wiring, impregnate the fittingwith a compound to seal tubing.

Figure 6.10 Typical Wiring Using Flameproof Metal

Conduit

6.5 Grounding

Grounding is always required for the properoperation of transmitters. Follow the domesticelectrical requirements as regulated in eachcountry. For a transmitter with a built-in lightningprotector, grounding should satisfy ground

resistance of 10Ω or less.Ground terminals are located on the inside andoutside of the terminal box. Either of these terminalsmay be used.

Ground terminal(inside)

Ground terminal

(outside)

F0611.ai

S U P P L Y

P U L S E

C H E C K

A L A R M

Figure 6.11 Ground Terminals

6.6 Power Supply Voltage and

Load Resistance

When conguring the loop, make sure that theexternal load resistance is within the range in the

gure below.(Note) In case of an intrinsically safe transmitter, external load

resistance includes safety barrier resistance.

600

250

0 10.5 16.6 25.2 42

External

load

resistance

R (Ω)

Power supply voltage E (V DC)F0612.ai

Communication

applicable range

BRAIN and HART

R=E–10.5

0.0244

Figure 6.12 Relationship between Power SupplyVoltage and External Load Resistance



<7. Operation> 7-1

IM 01C25K01-01E

7. Operation

7.1 Preparation for Starting

Operation

The Model EJX115A low ow transmitter measuresthe ow rates of liquids and gases. This sectiondescribes the operation procedure for the EJX115Aas shown in Figure 7.1 (vertical impulse pipingtype, high-pressure connection: right side) whenmeasuring a liquid ow rate.

(a) Follow the procedures below to introduceprocess pressure into the transmitter.

1) Open the stop valve on the downstream side.2) Gradually open the stop valve on the upstream

side to introduce process uid into thetransmitter pressure-detector section.This will cause process uid to ow into theorice built in the manifold, and apply ow-dependent differential pressure to the high andlow pressure sides of the transmitter.

3) Conrm that there are no pressure leaks in thestop valves on the upstream and downstreamsides, process piping connection or transmitter,etc.

(b) Venting Gas from the Transmitter Pressure-detector Section.

Since the piping in the example of Figure 7.1

is constructed to be self-venting, no ventingoperation is required. If it is not possibleto make the piping self-venting, refer toSubsection 7.6 for instructions.

(c) Turn ON power and connect the BT200. Open the terminal box cover, and connect the

BT200 to the SUPPLY + and – terminals.(d) Using the BT200, conrm that the transmitter is

operating properly. Check parameter values orchange the setpoints as necessary.If the transmitter is equipped with an integral

indicator, its indication can be used to conrmthat the transmitter is operating properly.

Stop valve(downstream side)

Stop valve

(upstream side)

Manifold

F0701.ai

Figure 7.1 Liquid Flow Measurement

Conrming that Transmitter is OperatingProperly

Using the BT200

• If the wiring system is faulty, ‘communicationerror’ appears on the display.

• If the transmitter is faulty, ‘SELF CHECKERROR’ appears on the display.

communication error

PARAM

C60:SELF CHECK

ERROR

Communication error(Faulty wiring)

Self-diagnostic error (Faulty transmitter)

DATA DIAG PRNT ESC

F0702.ai

Figure 7.2 BT200 Display

Using the integral indicator

• If the wiring system is faulty, the display staysblank.

• If the transmitter is faulty, an error code isdisplayed.

Self-diagnostic error on the integral indicator

(Faulty transmitter)F0703.ai

Figure 7.3 Integral Indicator with Error Code

NOTE

If any of the above errors are indicated onthe display of the integral indicator or thecommunicator, refer to subsection 8.5.3 for thecorrective action.



<7. Operation> 7-2

IM 01C25K01-01E

Verify and Change TransmitterParameter Setting and Values

The parameters related to the following items areset at factory as specied in order.

• Calibration range• Integral indicator display

• Output mode• Software damping (optional)

Other parameters like following are shipped with thedefault setting.

• Low-cut• Process alarm setting• Static pressure range• Signal characterizer • Write protection

To conrm or change the values, see IM 01C25T01-01E or 01C25T03-01E.

7.2 Zero Point Adjustment

After completing preparations for operating thetransmitter, adjust the zero point.

Zero point adjustment can be done by turning thetransmitter’s zero-adjustment screw or by usingthe communicator. This section describes theprocedure for the zero-adjustment screw. For thecommunicator procedure, see the communicationmanual.

IMPORTANT

Do not turn off the power to the transmitterimmediately after performing a zero pointadjustment. Powering off within 30 seconds ofperforming this procedure will return the zeropoint to its previous setting.

NOTE

Before performing this adjustment, make surethat the external zero adjustment function hasNOT been disabled by a parameter setting.

To check the output signal, use a digital multimeter,calibrator, or communicator.

Adjusting Zero Point for DifferentialPressure Transmitters

Before adjusting zero point, make sure that theequalizing valve is open.

Zero-adjustment

screw cover

F0704.ai

Figure 7.4 External Zero Adjustment Screw

The zero-adjustment screw is located inside thecover.Use a slotted screwdriver to turn the zero-

adjustment screw. Equalize the transmitter, thenturn the screw clockwise to increase the output orcounterclockwise to decrease the output. The zeropoint adjustment can be made with a resolutionof 0.01% of the setting range. The degree of zeroadjustments varies with the screw turning speed;turn the screw slowly to make a ne adjustment,quickly to make a rough adjustment.

7.3 Starting Operation

After completing the zero point adjustment, followthe procedure below to start operation.

1) Open the stop valve on the upstream side.2) Gradually open the stop valve on the

downstream side. This places the transmitter inan operational condition.

3) Conrm the operating status. If the outputsignal exhibits wide uctuations (hunting) dueto periodic variation in the process pressure,use BT200 to dampen the transmitter outputsignal. Conrm the hunting using a receiving

instrument or the integral indicator, and set theoptimum damping time constant.4) After conrming the operating status, perform

the following.



<7. Operation> 7-3

IM 01C25K01-01E

IMPORTANT

• Remove the BT200 from the terminal box,and conrm that none of the terminal screwsare loose.

• Close the terminal box cover and the

amplier cover. Screw each cover in tightlyuntil it will not turn further.• There are two covers that must be locked

on the ATEX Flameproof type transmitters. An Allen head bolts (shrouding bolts) areprovided under edge of the each cover forlocking. When a shrouding bolts are drivencounterclockwise by an Allen wrench, itis coming out and locks up a cover. (Seesection 8.4) After locking, the covers shouldbe conrmed not to be opened.

• Tighten the zero-adjustment cover mounting

screw to x the cover in position.

7.4 Shutting Down Operation

Shut down the transmitter operation as follows.

1) Turn off the power.2) Close the stop valves on the up and

downstream sides.

NOTE

Whenever shutting down the transmitter for along period, remove any process fluid from thetransmitter pressure-detector section.

7.5 Transmitter Measurement

Range (Determining

Differential Pressure Range)

The following describes the procedure for

calculating the differential pressure range and thecalculation example in low ow measurement.

Conversion factor in pressure unit:1 Pa = 1.01972×10-1 mmH2O1 mmH2O = 9.80665 Pa1 atm = 1.01325×102 kPa

7.5.1 Determining the Differential

Pressure Range

Use the following procedures to determine adifferential pressure range according to the uidconditions being measured.

(a) Calculate a water or air equivalent ow from the

ow of the uid being measured (100% ow).

Equivalent Water Flow Calculation

Qw = 0.03162 . Qf . ρf (1)

Where, Qw: Water equivalent volumetric ow(m3/h) at 4°C, 1 atm

Qf: Volumetric liquid ow (m3/h)at operating conditions (t°C, p kPa)

ρf: Specic liquid density (kg/m3)at operating conditions (t°C, p kPa)

Equivalent Air Flow Calculation

Qo = 0.5356 . Qn ρn . . (2)273.15 + t

101.325+ p

Zf

Zn

Where, Qo: Air equivalent volumetric ow at 0°C,1 atm (Nm3/h)

Qn: Volumetric gas ow at 0°C,1 atm (Nm3/h)

ρn: Specic gas density at 0°C,1 atm (kg/Nm3)

Zn: Compression factor of gas at 0°C,

1 atm Zf: Compression factor of gas at

operations conditions (t°C, p kPa)(b) Obtain a differential pressure from the

above equivalent water or air ow using thenomograph shown in Figure 7.5.1 or 7.5.2. Inthis procedure, multiply Qw or Qo by 1000/60 toconvert the ow unit into liter/min.

(c) Select an orice bore, taking into considerationspressure loss, etc.

(d) As necessary, calculate Reynolds number at

normal ow rate and correct the differentialpressure obtained from the procedure (b).



<7. Operation> 7-4

IM 01C25K01-01E

Reynolds Number Calculation

Re = 354 (3)W

D.µ

Where, Re: Reynolds number at normal ow rate W: Weight ow at normal ow rate (kg/h)

(Note)

D: Orice bore (mm) µ: Viscosity (mPa·s)

Note: Determination of W· For liquid, W=Qf·ρf· For gas, W=Qn·ρn

Differential Pressure Correction using

Reynolds Number

∆P =2. ∆P0

1

Kaf/Ka

Where, ∆P: Corrected differential pressure

∆P0: Differential pressure obtained fromprocedure (b)

Kaf/ka: Correction factor obtained fromFigure 7.5.3

For details concerning determination ofdifferential pressure correction using Reynoldsnumber, pressure loss, etc., refer to TI01C20K00-01E.

7.5.2 Example of Calculation

Fluid: N2 gas (Nitrogen gas)Flow range: 0 to 25 Nm3/h

(ow rate at 0°C, 1 atm)Normal ow rate: 18 Nm3/hSpecic density: 1.251 kg/Nm3

(specic density at 0°C, 1 atm)Temperature: 30°CPressure: 100 kPaViscosity: 0.018 mPa·s

From Equation (2), air equivalent volumetric owQo is:

Qo= 0.5356 × 25 1.251 ×

= 18.38 Nm3/h = 306.3 Nl/min

273.15 + 30

101.325 + 100

A differential pressure range of 0 to 2400 mmH2O isobtained from Figure 7.5.2 applying an orice boreof 6.350 mm (where, Zf/Zn=1 is assumed).

From Equation (3), Reynolds number at normal owrate Re is:

Re = 354 × = 6.97 × 10418 × 1.251

6.35 × 0.018

Since the correction factor (1.00) is constant atthis Reynolds number, no differential pressurecorrection is required. Consequently, the differential

pressure range is determined as 0 to 2400 mmH2O.

F0705.ai

0.05

0.508 0.864 1.511 2.527 4.039 6.350

0.01 0.05 0.1 0.5 1 5 10 40

200

100

50

10

5

1

200

100

50

10

5

1

0.1 0.5 1 5 10 40

Equivalent water flow(liter/min at 0°C, 1 atm)

Differential

Pressure

(kPa)

Figure 7.5.1 Relationship between Equivalent Water Flow and Differential Pressure



<7. Operation> 7-5

IM 01C25K01-01E

F0706.ai

0.508 0.864 1.511 2.527 4.039 6.350

0.5 1 5 10 50 100 500 1000

0.5 1 5 10 50 100 500 1000

200

100

50

10

5

1

200

100

50

10

5

1

Equivalent air flow(liter/min at 0°C, 1 atm)

Differential

Pressure

(kPa)

Figure 7.5.2 Relationship between Equivalent Air Flow and Differential Pressure

F0707.ai

Correction

Factor (Kaf/Ka)

Reynolds number(Re)

0.75

0.80

0.85

0.90

0.95

1.00

4 45 102 103 10486 5 862 3 4 5 862 3 42 3

A: F9340NL (Ø0.508)B: F9340NM (Ø0.864)C: F9340NN (Ø1.511)D: F9340NP (Ø2.527)E: F9340NQ (Ø4.039)F: F9340NR (Ø6.350)

A

B

C

D

E

F

5 10586

Figure 7.5.3 Relationship between Reynolds Number and Correction Factor



<7. Operation> 7-6

IM 01C25K01-01E

7.6 Venting or Draining

Transmitter Pressure-

detector Section

Since this transmitter is designed to be self-draining and self-venting with vertical impulse

piping connections, neither draining nor ventingwill be required if the impulse piping is conguredappropriately for self-draining or self-ventingoperation.

If condensate (or gas) collects in the transmitterpressure-detector section, the measured pressuremay be in error. If it is not possible to congure thepiping for self-draining (or self-venting) operation,you will need to loosen the drain (vent) screw on thetransmitter to completely drain (vent) any stagnatedliquid (gas).

However, since draining condensate or bleeding offgas gives the pressure measurement disturbance,this should not be done when the loop is inoperation.

WARNING

Since the accumulated liquid (or gas) may betoxic or otherwise harmful, take appropriate careto avoid contact with the body, or inhalation ofvapors.

7.6.1 Draining Condensate

1) Gradually open the drain screw or drain plugand drain the transmitter pressure-detectorsection. (See Figure 7.6.1.)

2) When all accumulated liquid is completelyremoved, close the drain screw or drain plug.

3) Tighten the drain screw to a torque of 10 N·m1kgf·m, and the drain plug to a torque of 34 to39 N·m 3.5 to 4 kgf·m.

F0708.ai

Drain screw

Drain plug

When you loosen the drain screw or drain

plug, the accumulated loquid will be

expelled in the direction on th earrow.

Figure 7.6.1 Draining the Transmitter

7.6.2 Venting Gas

1) Gradually open the vent screw to vent gas fromthe transmitter pressure-detector section. (SeeFigure 7.6.2.)

2) When the transmitter is completely vented,close the vent screw.

3) Tighten the vent screw to a torque of 10 N·m1kgf·m.

F0709.ai

Vent screw

Vent screw

When you loosen the vent screw, the gas

escapes in the direction of the arrow.

Figure 7.6.2 Venting the Transmitter

7.7 Setting the Range Using the

Range-setting Switch

WARNING

The range setting switch must not be used in the

hazardous area.When it is necessary to use the switch, operate itin a non-hazardous location.

When pressure is applied to the transmitter, the low-and high-limit values for the measurement range(LRV and URV) can be changed (re-ranged) usingthe range-setting switch (push-button) located onthe optional integral indicator plate and the externalzero adjustment screw. This procedure doesnot require use of the communicator. However,changes in the scale range and engineering unitdisplay settings for the integral indicator require useof the communicator.

Follow the procedure below to change the LRV andURV settings.



<7. Operation> 7-7

IM 01C25K01-01E

[Example]

Rerange LRV to 0 and URV to 3 MPa.

1) Connect the transmitter and apparatus asshown in Figure 8.1 and warm it up for at leastve minutes.

2) Press the range-setting push-button.

The integral indicator then displays “LRV.SET.”3) Apply a pressure of 0 kPa (atmospheric

pressure) to the transmitter. (Note 1)

4) Turn the external zero-adjustment screw in thedesired direction. The integral indicator displaysthe output signal in %. (Note 2)

5) Adjust the output signal to 0% (1 V DC) byrotating the external zero-adjustment screw.Doing so completes the LRV setting.

6) Press the range-setting push-button. Theintegral indicator then displays “URV.SET.”

7) Apply a pressure of 3 MPa to thetransmitter.(Note 1)

8) Turn the external zero-adjustment screw in thedesired direction. The integral indicator displaysthe output signal in %. (Note 2)

9) Adjust the output signal to 100% (5 V DC) byrotating the external zero-adjustment screw.Doing so completes the URV setting.

10) Press the range-setting push-button. Thetransmitter then switches back to the normaloperation mode with the measurement range of0 to 3 MPa.

Note 1: Wait until the pressure inside the pressure-detectorsection has stabilized before proceeding to the next step.

Note 2: If the pressure applied to the transmitter exceeds theprevious LRV (or URV), the integral indicator may displayerror number “AL.30” (In this case, the output signalpercent and “AL.30” are displayed alternately every twoseconds). Although “AL.30” is displayed, you may proceedto the next step. However, should any other error numberbe displayed, take the appropriate measure in referenceto , “Errors and Countermeasures” in each communicationmanual.

IMPORTANT

• Do not turn off the power to the transmitterimmediately after completion of the changein the LRV and/or URV setting(s). Notethat powering off within thirty seconds after

setting will cause a return to the previoussettings.• Changing LRV automatically changes URV

to the following value.

URV=previous URV+(new LRV–previous LRV)

• If the range-setting push-button and externalzero-adjustment screw are not touchedduring a range-change operation, thetransmitter automatically switches back tothe normal operation mode.

F0710.ai

Integral indicator

Range-setting switch(Push-button)

Note 1: Use a thin bar which has ablunt tip, e.g., a hexagonalwrench, to press therange-setting push-button.

Note 2: The push-button is locatedin either lower right orlower left portion of theLCD indicator.

Figure 7.7 Range-setting Switch



<8. Maintenance> 8-1

IM 01C25K01-01E

8. Maintenance

8.1 Overview

WARNING

Since the accumulated process uid may betoxic or otherwise harmful, take appropriate careto avoid contact with the body or inhalation ofvapors when draining condensate or venting gasfrom the transmitter pressure-detector sectionand even after dismounting the instrument fromthe process line for maintenance.

Maintenance of the transmitter is easy due to itsmodular construction. This chapter describes the

procedures for calibration, adjustment, and thedisassembly and reassembly procedures requiredfor component replacement.

Transmitters are precision instruments. Pleasecarefully and thoroughly read the following sectionsfor information on how to properly handle themwhile performing maintenance.

IMPORTANT

• As a rule, maintenance of this transmittershould be done in a shop that has all thenecessary tools.

• The CPU assembly contains sensitive partsthat can be damaged by static electricity.Take precautions such as using a groundedwrist strap when handling electronic parts ortouching the board circuit patterns. Also besure to place the removed CPU assemblyinto a bag with an antistatic coating.

8.2 Calibration Instruments

SelectionTable 8.1 lists the instruments that can be usedto calibrate a transmitter. When selecting aninstrument, consider the required accuracy level.Exercise care when handling these instruments toensure they maintain the specied accuracy.

8.3 Calibration

Use the procedure below to check instrumentoperation and accuracy during periodic

maintenance or troubleshooting.

1) Connect the instruments as shown in gure 8.1and warm up the instruments for at least veminutes.

IMPORTANT

• Do not perform the calibration procedureuntil the transmitter is at room temperature.

• To adjust the transmitter for highestaccuracy, make adjustments with the

power supply voltage and load resistanceincluding leadwire resistances set close tothe conditions under which the transmitter isinstalled.

• If the measurement range 0% point is0 kPa or shifted in the positive direction(suppressed zero), the reference pressureshould be applied as shown in the gure.If the measurement range 0% point is shiftedin the negative direction (elevated zero), thereference pressure should be applied usinga vacuum pump.

2) Apply reference pressures of 0%, 50%,and 100% of the measurement range to thetransmitter. Calculate the errors (differencesbetween digital voltmeter readings andreference pressures) as the pressure isincreased from 0% to 100% and is decreasedfrom 100% to 0%, and conrm that the errorsare within the required accuracy.




IM 01C25K01-01E

Table 8.1 Instruments Required for Calibration

Name Yokogawa-recommended Instrument Remarks

Power supply Model SDBT or SDBS distributor 4 to 20 mA DC signalLoad resistor Model 2792 standard resistor [250 Ω ±0.005%, 3 W]

Load adjustment resistor [100 Ω ±1%, 1 W]Voltmeter Model 2501 A digital multimeter

Accuracy (10V DC range): ±(0.002% of rdg + 1 dgt)

Digitalmanometer Model MT220 precision digital manometer 1) For 10 kPa class Accuracy: ±(0.015% of rdg + 0.015% of F.S.). . . . for 0 to 10 kPa ±(0.2% of rdg + 0.1% of F.S.). . . . . . . . for -10 to 0 kPa2) For 130 kPa class Accuracy: ±0.02% of rdg. . . . . . . . . . . . . . . . . . . . for 25 to 130 kPa ±5digits . . . . . . . . . . . . . . . . . . . . . . . . . for 0 to 25 kPa ±(0.2% of rdg + 0.1% of F.S.). . . . . . . . for -80 to 0 kPa3) For 700 kPa class Accuracy: ±(0.02% of rdg + 3digits) . . . . . . . . . . . for 100 to 700 kPa ±5 digits . . . . . . . . . . . . . . . . . . . . . . . . for 0 to 100 kPa ±(0.2% of rdg + 0.1% of F.S.). . . . . . . . for -80 to 0 kPa4) For 3000 kPa class Accuracy: ±(0.02% of rdg + 10 digits) . . . . . . . . . . for 0 to 3000 kPa ±(0.2% of rdg + 0.1% of F.S.). . . . . . . . for -80 to 0 kPa

5) For 130 kPa abs class Accuracy: ±(0.03% of rdg + 6 digits) . . . . . . . . . . . for 0 to 130 kPa abs

Select a manometer havinga pressure range close tothat of the transmitter.

Pressuregenerator

Model 7674 pneumatic pressure standard for 200 kPa 2 kgf/cm2, 25 kPa2500 mmH2O

Accuracy: ±0.05% of F.S.

Requires air pressuresupply.

Dead weight gauge tester 25 kPa 2500 mmH2O Accuracy: ±0.03% of setting

Select the one having apressure range close to thatof the transmitter.

Pressuresource

Model 6919 pressure regulator (pressure pump)Pressure range: 0 to 133 kPa 1000 mmHg

Prepare the vacuum pumpfor negative pressureranges.

Note: The above table contains the instruments capable of performing calibration to the 0.2% level. Since special maintenance andmanagement procedures involving traceability of each instrument to higher-level standards are required for calibration to the 0.1%or higher level, there may be difculties in calibration to this level in the eld. For calibration to the 0.1% level, contact Yokogawa

representatives from which the instrument was purchased or the nearest Yokogawa ofce.

V

RRc

P

Using pressuregenerator

Reference pressure

High pressure side High pressure side

Low pressure sideopen to atmosphere

Low pressure sideopen to atmosphere

Supply pressure

Pressure generator

Load resistance,250Ω

Loadadjustingresistance,100Ω

Digital voltmeter

PowersupplyE

V

RRc

P

Using pressuresource withmanometer

Reference pressure

Pressure source

Model MT220precision digital manometer

Load resistance,250Ω

Loadadjustingresistance,100Ω Digital voltmeter

PowersupplyE

F0801.ai

Figure 8.1 Instrument Connections (EJX110A)




IM 01C25K01-01E

8.4 Disassembly and

Reassembly

This section describes procedures for disassemblyand reassembly for maintenance and componentreplacement.

Always turn OFF power and shut off and releasepressures before disassembly. Use proper tools forall operations. Table 8.2 shows the tools required.

Table 8.2 Tools for Disassembly and Reassembly

Tool Quantity Remarks

Phillipsscrewdriver

1 JIS B4633, No. 2

Slottedscrewdriver

1

Allen wrenches 3 JIS B4648One each, nominal 3, 4 and2.5 mm Allen wrenches

Wrench 1 Width across ats, 17 mmTorque wrench 1 Adjustablewrench

1

Socket wrench 1 Width across ats, 16 mmSocket driver 1 Width across ats, 5.5 mmTweezers 1

CAUTION

Precautions for ATEX Flameproof Type

Transmitters• Flameproof type transmitters must be, as

a rule, removed to a non-hazardous areafor maintenance and be disassembled andreassembled to the original state.

• On the ameproof type transmitters the twocovers are locked, each by an Allen headbolt (shrouding bolt). When a shrouding boltis driven clockwise by an Allen wrench, it isgoing in and cover lock is released, and thenthe cover can be opened.

When a cover is closed it should be locked

by a shrouding bolt without fail. Tighten theshrouding bolt to a torque of 0.7 N·m.

Shrouding Bolt

Shrouding BoltF0802.ai

Figure 8.2 Shrouding Bolts

8.4.1 Replacing the Integral Indicator

CAUTION

Cautions for Flameproof Type Transmitters

Users are prohibited by law from modifying theconstruction of a ameproof type transmitter.

This would invalidate the agency approval for theuse of the transmitter in a rated area.It follows that the user is prohibited from usinga ameproof type transmitter with its integralindicator removed, or from adding an integralindicator to a transmitter. If such modication isabsolutely required, contact Yokogawa.

This subsection describes the procedure forreplacing an integral indicator. (See gure 8.3)

Removing the Integral Indicator

1) Remove the cover.2) While supporting the integral indicator with one

hand, loosen its two mounting screws.3) Dismount the LCD board assembly from the

CPU assembly. When doing this, carefully pull the LCD board

assembly straight forward so as not to damagethe connector pins between it and the CPUassembly.

Attaching the Integral Indicator

1) Align both the LCD board assembly and CPUassembly connectors and engage them.

2) Insert and tighten the two mounting screws.3) Replace the cover.

F0803.ai

Pressforward

Output terminal cable

Zero-adjustmentscrew pin

Slideswitch

Boss Zero-adjustmentscrew

Integralindicator

Mounting screw

Amplifier Cover

CPU assembly

Bracket(for zero-adjustmentscrew pin)

LCD board assembly

Figure 8.3 Removing and Attaching LCD BoardAssembly and CPU Assembly




IM 01C25K01-01E

8.4.2 Replacing the CPU Board Assembly

This subsection describes the procedure forreplacing the CPU assembly. (See gure 8.3)

Removing the CPU Assembly

1) Remove the cover. If an integral indicator is

mounted, refer to subsection 8.4.1 and removethe indicator.

2) Turn the zero-adjustment screw to the position(where the screw head slot is horizontal) asshown in gure 8.3.

3) Disconnect the output terminal cable (cablewith brown connector at the end). When doingthis, lightly press the side of the CPU assemblyconnector and pull the cable connector todisengage.

4) Use a socket driver (width across ats, 5.5mm)

to loosen the two bosses.5) Carefully pull the CPU assembly straightforward to remove it.

6) Disconnect the at cable (cable with whiteconnector at the end) that connects the CPUassembly and the capsule.

NOTE

Be careful not to apply excessive force to theCPU assembly when removing it.

Mounting the CPU Assembly

1) Connect the at cable (with white connector)between the CPU assembly and the capsule.

2) Connect the output terminal cable (with brownconnector).

NOTE

Make certain that the cables do not get pinchedbetween the case and the edge of the CPUassembly.

3) Align and engage the zero-adjustment screwpin with the groove on the bracket on the CPUassembly. Then insert the CPU board assemblystraight onto the post in the amplier case.

4) Tighten the two bosses. If the transmitter isequipped with an integral indicator, refer tosubsection 8.4.1 to mount the indicator.

NOTE

Conrm that the zero-adjustment screw pin isplaced properly in the groove on the bracket priorto tightening the two bosses. If it is not, the zero-adjustment mechanism will be damaged.

5) Replace the cover.

8.4.3 Replacing the Process ConnectorGaskets

This subsection describes process connectorgasket replacement. (See Figure 8.4.)

(a) Loosen the two bolts, and remove the processconnectors.

(b) Replace the process connector gaskets.(c) Remount the process connectors. Tighten the

bolts securely and uniformly with a torque of 39to 49 N·m 4 to 5 kgf·m, and verify that thereare no pressure leaks.

F0804.ai

Process connector

Process connector gasket

Bolt

Figure 8.4 Removing and Mounting the ProcessConnector

8.4.4 Cleaning Manifold Assembly andReplacing Orice

This subsection describes the procedures forcleaning the manifold assembly and replacing theorice to change ow rate. (See Figure 8.5.)

Removing the Manifold Assembly

1) Remove the process connector as shown inSubsection 9.4.3.

2) Remove the four bolts that connect the coverange with the manifold.

3) Remove the spacer, orice, and orice gasketfrom inside the manifold.

4) Clean the manifold, spacer, and orice, orreplace them as necessary.




IM 01C25K01-01E

IMPORTANT

Exercise care as follows when cleaning themanifold assembly.

• Handle the manifold assembly with care, andbe careful not to damage the inner part of the

manifold, spacer, and orice. Be especiallycareful not to damage or distort the oriceedge (orice bore).

• Do not use a chlorinated or acidic solution forcleaning.

• Rinse thoroughly with clean water aftercleaning.

Reassembling the Manifold Assembly

1) Reassemble the orice gasket, orice, andspacer into the manifold in that order.

When reassembling, refer to Figure 8.5 toensure that they are placed in the correctdirection.Replace the orice gasket with a new gasket.

2) Mount the process connector as shown inSubsection 9.4.3.

3) Mount the manifold on the cover ange with thefour bolts. Tighten the four bolts uniformly to atorque of 39 to 49 N·m 4 to 5 kgf·m.Replace the manifold gaskets with newgaskets.

4) After completing reassembly, a leak testmust be performed to verify that there are nopressure leaks.

NOTE

Exercise care as follows when reassembling themanifold assembly. (See Figure 8.5.)

• Be careful not to reassemble the orice inthe wrong direction. Note that the spacer iscongured so that it cannot be placed in thereverse direction.

• When mounting the manifold on the coverange, conrm the indication “ow direction”shown on the manifold surface and the highand low pressure sides of the pressure-detector section.Mount the manifold so that the upstreamside of process uid ow is located at thehigh pressure side of the pressure-detectorsection.

F0805.ai

Process connector

gasketProcess connector

gasket

Spacer

Orifice

Bolt

Orifice gasket

Manifold gasket

Cover flange

Manifold

Low pressure side

High pressure side

Figure 8.5 Manifold Assembly

8.4.5 Cleaning and Replacing the CapsuleAssembly

This subsection describes the procedures forcleaning and replacing the capsule assembly. (Seegure 8.6.)

CAUTION

Cautions for Flameproof Type Transmitters

Users are prohibited by law from modifying the

construction of a ameproof type transmitter. Ifyou wish to replace the capsule assembly withone of a different measurement range, contactYokogawa.The user is permitted, however, to replace acapsule assembly with another of the samemeasurement range. When doing so, be sure toobserve the following.

• The replacement capsule assembly musthave the same part number as the one beingreplaced.

• The section connecting the transmitter andcapsule assembly is a critical element inpreservation of ameproof performance, andmust be checked to verify that it is free ofdents, scratches, and other defects.

• After completing maintenance, be sure tosecurely tighten the setscrews that fastenthe transmitter section and pressure-detectorsection together.




IM 01C25K01-01E

Removing the Capsule Assembly

IMPORTANT

Exercise care as follows when cleaning thecapsule assembly.

• Handle the capsule assembly with care, and

be especially careful not to damage or distortthe diaphragms that contact the processuid.

• Do not use a chlorinated or acidic solution forcleaning.

• Rinse thoroughly with clean water aftercleaning.

1) Remove the CPU assembly as shown insubsection 8.4.2.

2) Remove the two setscrews that connect thetransmitter section and pressure-detectorsection.

3) Remove the hexagon-head screw and thestopper.

4) Separate the transmitter section and pressure-detector section.

5) Remove the nuts from the four ange bolts.6) While supporting the capsule assembly with

one hand, remove the cover ange.7) Remove the capsule assembly.8) Clean the capsule assembly or replace with a

new one.

Reassembling the Capsule Assembly

1) Insert the capsule assembly between the angebolts, paying close attention to the relativepositions of the H (high pressure side) andL (low pressure side) marks on the capsuleassembly.

Replace the two capsule gaskets with newgaskets.

2) Install the cover ange on the high pressureside, and use a torque wrench to tighten thefour nuts uniformly to a torque 17 N·m.

3) After the pressure-detector section has beenreassembled, a leak test must be performed toverify that there are no pressure leaks.

4) Reattach the transmitter section to thepressure-detector section.Reattach the stopper with the hexagon-headscrew.

5) Tighten the two setscrews. (Tighten the screwsto a torque of 1.5 N·m)

6) Install the CPU assembly according tosubsection 8.4.2.

7) After completing reassembly, adjust the zeropoint and recheck the parameters.

F0806.ai

Transmitter section


Cover flange

Capsule gasket

Flange bolt

Setscrew

Nut

Figure 8.6 Removing and Mounting the Pressure-detector Section

8.5 Troubleshooting

If any abnormality appears in the measured values,

use the troubleshooting ow chart below to isolateand remedy the problem. Since some problemshave complex causes, these ow charts maynot identify all. If you have difculty isolating orcorrecting a problem, contact Yokogawa servicepersonnel.

8.5.1 Basic Troubleshooting

First determine whether the process variableis actually abnormal or a problem exists in themeasurement system.

If the problem is in the measurement system,isolate the problem and decide what correctiveaction to take.

This transmitter is equipped with a self-diagnosticfunction which will be useful in troubleshooting,and the transmitter equipped with an integralindicator will show an alarm code as a result of self-diagnosis.See subsection 8.5.3 for the list of alarms.See also each communication manual.




IM 01C25K01-01E

Abnormalities appear in measurement.

: Areas where self-diagnostic offers support

Is process variable

itself abnormal?

Inspect the

process system.

Isolate problem in

measurement system.

Does problem exist in

receiving instrument?

Check/correct

environmental conditions.

Inspect receiver.

Check transmitter.

Check/correct operating

conditions.

Measurement system problem

F0807.ai

YES

NO

NO

YES

Environmental conditions

Operating conditions

Transmitter itself

Figure 8.7 Basic Flow and Self-Diagnostics

8.5.2 Troubleshooting Flowcharts

Connect communicator and check self-diagnostics.

Does the self-diagnostic

indicate problem location?

Contact Yokogawa service personnel.

F0808.ai

The following sorts of symptoms indicate that transmitter

may not be operating properly.

Example : • There is no output signal.

• Output signal does not change even though

process variable is known to be varying.

• Output value is inconsistent with value

inferred for process variable.

Is power supply

polarity correct?

Are power

supply voltage and load

resistance correct?

Refer to Section 6.3 to check/correct

polarity at each terminal from power

supply to the terminal box.

Fix pressure leaks, paying particular

attention to connections for impulse

piping,pressure-detector section, etc.

Fully close equalizing valve, and fullyopen high pressure and low pressure

valves.

Refer to Section 6.6 for rated voltage

and load resistance.

Find/correct broken conductor or

wiring error.

Are valves opened or

closed correctly?

Is there any pressure leak?

Is therecontinuity through the

transmitter loop wiring?Do the loop numbers

match?

YES

NO

YES

NO

NO

YES

NO

NO

YES

YES

NO

YES

Refer to error message summary in

Subsection 8.5.3 or in each

communication manual to take actions.

Is orifice clogged with

dust, etc?

YES

NO

Refer to Subsection 8.4.4 to clean the

manifold assembly.




IM 01C25K01-01E

Connect a communicator and check self-diagnostics.

Does the self-

diagnostic indicate problemlocation?


F0809.ai

Is power supply

polarity correct?


closed correctly?


each communication manual to take

actions.

YES

NO

NO

YES

Refer to Section 6.3 to check/correct

polarity at each terminal from power

supply to the terminal box.

Fix pressure leaks, paying particular

attention to connections for impulse

piping, pressure-detector section, etc.

Fully close equalizing valve, and fully

open high pressure and low pressure

valves.

NO

YES

YES

NO

Adjust the zero point.

NO

YES

Is there any pressure leak?

Is zero pointadjusted correctly?

Output travels beyond 0% or 100%.

Refer to Subsection 5.1.1 and install

the transmitter as appropriate for theflow direction of fluid.

YES

NOIs the transmitterinstalled as appropriate for

the flow direction?

Connect a communicator and check self-diagnostics.


F0810.ai


closed correctly?

Is impulse piping

connected correctly?


each communication manual to take

actions.

Refer to Section 6.6 for rated voltage

and load resistance.

Provide lagging and/or cooling, or allow

adequate ventilation.

Refer to Section 8.2 when selecting

instruments for calibration.

Fully close equalizing valve, and fully

open high pressure and low pressure

valves.

Refer to individual model user manuals

and connect piping as appropriate for

the measurement purpose.

Adjust the output.

Is transmitter installed where there is

marked variation intemperature?

Is output adjusted correctly?

Large output error.

Does the self-

diagnostic indicate problemlocation?

Are power supply

voltage and load resistance

correct?

Were appropriate

instruments used for

calibration?

YES

NO

YES

NO

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

YESRefer to Subsection 8.4.4 to clean the

manifold assembly.

NOIs orifice clogged with

dust, etc?




IM 01C25K01-01E

8.5.3 Alarms and Countermeasures

Table 8.1 Alarm Message Summary

Indicator CauseOutput Operation

during Error Countermeasure

None AL. 01CAP. ERR

Sensor problem. Outputs the signal (Hold, High, orLow) set with parameter.

Replace capsule when errorkeeps appearing even afterrestart.Capsule temperature sensorproblem.

Capsule EEPROM problem. AL. 02 AMP. ERR

Amplier temperature sensorproblem.

Outputs the signal (Hold, High, orLow) set with parameter.

Replace amplier.

Amplier EEPROM problem. Amplier problem.

AL. 10PRESS

Input is outside measurementrange limit of capsule.

Outputs high range limit value orlow range limit value.

Check input or replace capsulewhen necessary.

AL. 11ST. PRSS

Static pressure exceeds limit. Continues to operate and output.

AL. 12CAP. TMP

Capsule temperature is outsiderange (–50 to 130°C).

Use heat insulation or makelagging to keep temperaturewithin range.

AL. 13 AMP. TMP Amplier temperature is outsiderange (–50 to 95°C) AL. 30RANGE

Output is outside upper or lowerrange limit value.

Outputs high range limit value orlow range limit value.

Check input and range setting,and change them as needed.

AL. 31SP. RNG

Static pressure exceeds speciedrange.

Holds output immediately beforeerror occurred.

AL. 35 *1P. HI

Input pressure exceeds speciedthreshold.

Continues to operate andoutput.

Check input.

AL. 36 *1P. LO AL. 37 *1SP. HI

Input static pressure exceedsspecied threshold.

AL. 38 *1SP. LO

AL. 39 *1TMP. HI

Detected temperature exceedsspecied threshold.

AL. 40 *1TMP. LO AL. 50P. LRV

Specied value is outside of settingrange.

Holds output immediately beforeerror occurred.

Check setting and change themas needed.

AL. 51P. URV AL. 52P. SPN AL. 53P. ADJ

Continues to operate and output. Check input.

AL. 54

SP. RNG

Continues to operate and output

holding static pressure in %.

Check setting and change them

as needed. AL. 55SP. ADJ

Continues to operate and output. Check input.

AL. 60SC. CFG

Specied values or settings todene signal characterizer functiondo not satisfy the condition.

Check setting and changethem as needed.

AL. 79OV. DISP

Displayed value exceeds limit.

*1: These alarms may appear only when process alarm function is activated.



<9. General Specications> 9-1

IM 01C25K01-01E

9. General Specications

9.1 Standard Specications

Refer to IM 01C25T02-01E for FOUNDATIONFieldbus communication type marked with “◊”.

Performance Specications

See General Specications sheet, GS 01C25K01-01E.

Functional Specications

Span & Range Limits

CapsuleDifferential

Pressure Span

Water

Equivalent

Flow l/min

Air

Equivalent

Flow Nl/min

L 1 to 10 kPa100 to 1000 mmH2O

0.016 to 7.2 0.44 to 198

M2 to 100 kPa

200 to 10000 mmH2O0.022 to 23.0 0.63 to 635

H20 to 210 kPa

2000 to 21000 mmH2O0.07 to 33.0 2.0 to 910

Output “◊”

Two wire 4 to 20 mA DC output with digitalcommunications, linear or square rootprogrammable. BRAIN or HART FSK protocolare superimposed on the 4 to 20 mA signal.

Output range: 3.6 mA to 21.6 mAOutput limits conform to NAMUR NE43 can bepre-set by option C2 or C3.

Failure Alarm “◊”

Output status at CPU failure and hardwareerror;

Up-scale: 110%, 21.6 mA DC or more(standard)Down-scale: –5%, 3.2 mA DC or lessNote: Applicable for Output signal code D and E

Damping Time Constant (1st order)

Amplier damping time constant is adjustablefrom 0 to 100.00 seconds and added toresponse time.

Note: For BRAIN protocol type, when amplier dampingis set to less than 0.5 seconds, communicationmay occasionally be unavailable during theoperation, especially while output changesdynamically. The default setting of dampingensures stable communication.

Update Period “◊”

Differential Pressure: 45 msecStatic Pressure: 360 msec

Zero Adjustment LimitsZero can be fully elevated or suppressed, withinthe lower and upper range limits of the capsule.

External Zero Adjustment “◊”

External Zero is continuously adjustable with0.01% incremental resolution of span. Re-rangecan be done locally using the digital indicatorwith range-setting switch.

Integral Indicator (LCD display)

5-digit Numerical Display, 6-digit Unit Displayand Bar graph.The indicator is congurable to display one orup to four of the following variables periodically.;Differential pressure in %, Scaled Differentialpressure, Differential Pressure in Engineeringunit, Static Pressure in Engineering unit.See “Setting When Shipped” for factory setting.

Burst Pressure Limits (Differential pressure

transmitter part)

69 MPa (10000 psi)

Normal Operating Condition

(Selected features may affect limits.)

Ambient Temperature Limits

–40 to 85°C (–40 to 185°F) –30 to 80°C (–22 to 176°F) with LCD display

Process Temperature Limits

–40 to 120°C (–40 to 248°F)

Ambient Humidity Limits

0 to 100% RH




IM 01C25K01-01E

Working Pressure Limits (Silicone oil)

Maximum Pressure Limits

All capsules 16 MPa (2300 psi)

Minimum Pressure Limit

See graph below

Atmospheric

pressure

-40

(-40)

0

(32)

40

(104)

80

(176)

120

(248)

1(0.14)

2.7(0.38)

10(1.4)

(psi abs)

100(14.5)

Process temperature °C (°F)

Working

pressure

kPa abs

Applicable range

F0901.ai

Figure 9.1 Working Pressure and ProcessTemperature

Supply & Load Requirements “◊” (Optional

features or approval codes may affect

electrical requirements.)

With 24 V DC supply, up to a 550 Ω load can beused. See graph below.

E-10.5

0.0244

(Ω)

Power supply voltage E (V DC)

600

250

R

10.5 16.6 25.2 42

Externalloadresistance

DigitalCommunication

rangeBRAIN and HART

R=

F0902.ai

Figure 9.2 Relationship Between Power SupplyVoltage and External Load Resistance

Supply Voltage

10.5 to 42 V DC for general use and ameprooftype.

10.5 to 32 V DC for lightning protector (Optioncode /A).

10.5 to 30 V DC for intrinsically safe, type n ornon-incendive type.

Minimum voltage limited at 16.6 V DC for digitalcommunications, BRAIN and HART

Load (Output signal code D and E)

0 to 1290 Ω for operation250 to 600 Ω for digital communication

Communication Requirements “◊”

(Safety approvals may affect electrical

requirements.)

BRAIN

Communication DistanceUp to 2 km (1.25 miles) when using CEVpolyethylene-insulated PVC-sheathed cables.Communication distance varies depending ontype of cable used.

Load Capacitance

0.22 μF or less

Load Inductance

3.3 mH or less

Input Impedance of communicating device

10 kΩ or more at 2.4 kHz. HART

Communication Distance

Up to 1.5 km (1 mile) when using multipletwisted pair cables. Communication distancevaries depending on type of cable used.

EMC Conformity Standards ,

EN61326-1 Class A, Table2 (For use in industriallocations)EN61326-2-3




IM 01C25K01-01E

Physical Specications

Wetted Parts Materials

Diaphragm, Cover Flange, Process Connector,Capsule Gasket, Vent/Drain Plug, Manifold,Orice, Spacer, and Orice gasket

Non-wetted Parts Materials

Bolting

ASTM-B7 carbon steel, 316L SST stainlesssteel, or ASTM grade 660 stainless steel

Housing

Low copper cast aluminum alloy withpolyurethane, mint-green paint (Munsell 5.6BG3.3/2.9 or its equivalent) or ASTM CF-8Mstainless steel

Degrees of Protection

IP66/IP67, NEMA4X

Cover O-rings

Buna-N, uoro-rubber (option)

Nameplate and tag

316SST (including /N4 wired tag)

Fill Fluid

Silicone, Fluorinated oil (option)

Weight

[Installation code 7, 8, and 9]4.5 kg (9.9 lb) without integral indicator and

mounting bracket. Add 1.5 kg (3.3lb) for amplier housing code 2.

Connections

Refer to “Model and Sufx Code.”

Process Connection of Cover Flange:IEC61518




IM 01C25K01-01E

9.2 Model and Sufx Codes

Model Sufx Codes Description

EJX115A . . . . . . . . . . . . . . . . . . . . . . Low ow transmitter Outputsignal

-D . . . . . . . . . . . . . . . . . . . .-E . . . . . . . . . . . . . . . . . . . .-F . . . . . . . . . . . . . . . . . . . .

4 to 20 mA DC with digital communication (BRAIN protocol)4 to 20 mA DC with digital communication (HART protocol)Digital communication(FOUNDATION Fieldbus protocol, refer to GS 01C25T02-01E)

Measurementspan (capsule)

L . . . . . . . . . . . . . . . . . . .M . . . . . . . . . . . . . . . . . .H . . . . . . . . . . . . . . . . . . .

1 to 10 kPa (4 to 40 inH2O)2 to 100 kPa (8 to 400 inH2O)20 to 210 kPa (80 to 840 inH2O)

Wetted partsmaterial

S . . . . . . . . . . . . . . . . . . Cover ange and process connector: ASTM CF-8M #

Capsule: Hastelloy C-276 (Diaphragm) # F316L SST (Others) #

Capsule gasket: Teon-coated 316L SSTDrain/Vent plug: 316 SST #

Orice: 316 SST #

Manifold: F316 SST #

Spacer: 316 SST #

Orice gasket: PTFEProcessconnections

2 . . . . . . . . . . . . . . . .4 . . . . . . . . . . . . . . . .

Rc1/2 female1/2 NPT female

Bolts and nuts

material J . . . . . . . . . . . . . .G. . . . . . . . . . . . . .

For Cover ange For Process connector For Manifold

SNB7 SNB7 316L SST316L SST 316L SST 316L SSTInstallation

-2 . . . . . . . . . . .-3 . . . . . . . . . . .-6 . . . . . . . . . . .-7 . . . . . . . . . . .-8 . . . . . . . . . . .-9 . . . . . . . . . . .

Vertical impulse piping type, right side high pressure, manifold upsideVertical impulse piping type, right side high pressure, manifold downsideVertical impulse piping type, left side high pressure, manifold upsideVertical piping, left side high pressure, and manifold downsideHorizontal piping and right side high pressureHorizontal piping and left side high pressure

Amplier housing 1 . . . . . . . . . .2 . . . . . . . . . .3 . . . . . . . . . .

Cast aluminum alloy ASTM CF-8M Stainless steel *2

Cast aluminum alloy with corrosion resistance propertiesElectrical connection

0 . . . . . . . . .2 . . . . . . . . .4 . . . . . . . . .

5 . . . . . . . . .7 . . . . . . . . .9 . . . . . . . . .A . . . . . . . . .C . . . . . . . . .D . . . . . . . . .

G1/2 female, one electrical connection without blind plugs1/2 NPT female, two electrical connections without blind plugsM20 female, two electrical connections without blind plugs

G1/2 female, two electrical connections and a blind plug *31/2 NPT female, two electrical connections and a blind plug *3

M20 female, two electrical connections and a blind plug *3

G1/2 female, two electrical connections and a SUS316 blind plug1/2 NPT female, two electrical connections and a SUS316 blind plugM20 female, two electrical connections and a SUS316 blind plug

Integral indicator

D . . . . . . .E . . . . . . .N . . . . . . .

Digital indicator Digital indicator with the range setting switch *1

None

Mounting bracket

B . . . . .D . . . . .J . . . . .K . . . . .N . . . . .

304 SST 2-inch pipe mounting, at type (for horizontal piping)304 SST 2-inch pipe mounting, L type (for vertical piping)316 SST 2-inch pipe mounting, at type (for horizontal piping)316 SST 2-inch pipe mounting, L type (for vertical piping)None

— -N . . . . Always -N— 00 . . . Always 00— N . . . Always N— N. . Always N

— 0 . Always 0Optional codes / Optional specication

The “” marks indicate the most typical selection for each specication.*1: Not applicable for output signal code F.*2: Not applicable for electrical connection code 0, 5, 7 and 9.*3: Material of a blind plug is aluminum alloy or 304 SST.*4: Cast version of 316 SST. Equivalent to SCS14A.*5: Hastelloy C-276 or ASTM N10276.The ‘#’marks indicate the construction materials conform to NACE material recommendations per MR01-75. For the use of 316 SSTmaterial, there may be certain limitations for pressure and temperature. Please refer to NACE standards for details.




IM 01C25K01-01E

9.3 Optional Specications

Item Description Code

Factory Mutual (FM) FM Explosionproof Approval *1

Explosionproof for Class I, Division 1, Groups B, C and DDust-ignitionproof for Class II/III, Division 1, Groups E, F and GHazardous (classied) locations, indoors and outdoors (NEMA 4X)

FF1

FM Intrinsically safe Approval *1*2

Intrinsically Safe for Class I, Division 1, Groups A, B, C and D, Class II,Division 1,Groups E, F and G and Class III, Division 1 Hazardous Locations.Nonincendive for Class I, Division 2, Groups A, B, C and D, Class II,Division 2, Groups F and G, and Class III, Division 1 Hazardous Locations.

FS1

Combined FF1 and FS1 *1*2 FU1

CENELEC ATEX CENELEC ATEX (KEMA) Flameproof Approval *1

II 2G Exd IIC T4, T5, T6KF21

CENELEC ATEX (KEMA) Intrinsically safe Approval *1*2

II 1G EEx ia IIC T4KS2

Combined KF21, KS2 and Type n *1*2

Type n: II 3G Ex nL IIC T4KU21

Canadian Standards Association (CSA)

CSA Explosionproof Approval *1

Explosionproof for Class I, Groups B, C and DDustignitionproof for Class II/III, Groups E, F and G

Enclosure TYPE 4X, Temp.Code:T6...T4Ex d IIC T6...T4 Enclosure IP66 and IP67

Process Sealing CerticationDual Seal Certied by CSA to the requirement of ANSI/ISA 12.27.01No additional sealing requiredPrimary seal failure annuniciation: at the zero adjustment screw

CF1

CSA Intrinsically safe Approval *1 *2[For CSA C22.2]Intrinsically safe for Class I, Division 1, Groups A, B, C and D, Class II,Division 1, Groups E, F and G, Class III, Division 1Nonincendive for Class I, Division 2, Groups A, B, C and D, Class II,Division 2, Groups E, F and G, Class III, Division 1[For CSA E60079]Ex ia IIC T4, Ex nL IIC T4

Process Sealing CerticationDual Seal Certied by CSA to the requirement of ANSI/ISA 12.27.01No additional sealing requiredPrimary seal failure annuniciation: at the zero adjustment screw

CS1

Combined CF1 and CS1 *1*2 CU1

IECEx Scheme IECEx ameproof Approval *1

Flameproof for Zone1, Ex d IIC T6...T4SF2

IECEx Intrinsically safe, type n and ameproof Approval *1*2

Intrinsically safe and type nEx ia IIC T4, Ex nL IIC T4Flameproof Flameproof for Zone1, Ex d IIC T6...T4

SU2

Combined Approvals Combination of /KU21, /FU1 and /CU1 *1*2 V1U

Painting Color change Amplier cover only *9 P

Amplier cover and terminal cover, Munsell 7.5 R4/14 PRCoating change Anti-corrosion coating *3*9 X2

316 SST exterior parts 316 SST name plate, tag plate and zero-adjustment screw *10 HC

Fluoro-rubber O-ring All O-rings of amplier housing. Lower limit of ambient temperature: –15°C (5°F) HE




IM 01C25K01-01E

Item Description Code

Lightning protector Transmitter power supply voltage:10.5 to 32 V DC (10.5 to 30 V DC for intrinsically safe type.)

Allowable current: Max. 6000 A (1×40 μs), Repeating 1000 A (1×40 μs) 100 times Applicable Standards: IEC 61000-4-4, IEC 61000-4-5

A

Status output *4 Transistor output (sink type)Contact rating: 10.5 to 30 VDC, 120 mA DC(max) Low level: 0 to 2 VDC

AL

Oil-prohibited use Degrease cleansing treatment. K1

Degrease cleansing treatment and with uorinated oillled capsule.Operating temperature –20 to 80°C( –4 to 176°F)

K2

Oil-prohibited use withdehydrating treatment

Degrease cleansing and dehydrating treatment. K5

Degrease cleansing and dehydrating treatment with uorinated oillled capsule.Operating temperature –20 to 80°C( –4 to 176°F)

K6

Capsule ll uid Fluorinated oil lled in capsuleOperating temperature –20 to 80°C( –4 to 176°F)

K3

Calibration units *5 P calibration (psi unit)(See Table for Span and

Range Limits.)

D1

bar calibration (bar unit) D3

M calibration (kgf/cm2 unit) D4

Gold-plated diaphragm Surface of isolating diaphragm is gold plated, effective for hydrogen permeation. A1

Long vent *6 Total length: 119 mm (standard: 34 mm); Total length when combining withOptional code K1, K2, K5, and K6: 130 mm. Material: 316 SST.

U1

Output limits and failureoperation *7

Failure alarm down-scale: Output status at CPU failure and hardware error is –5%, 3.2 mA DC or less.

C1

NAMUR NE43 CompliantOutput signal limits:

3.8 mA to 20.5 mA

Failure alarm down-scale: Output status at CPUfailure and hardware error is –5%, 3.2 mA DC or less.

C2

Failure alarm up-scale: Output status at CPUfailure and hardware error is 110%, 21.6 mA or more.

C3

Stainless steel tag plate 304 SST tag plate wired onto transmitter (316 SST when /HC is specied) N4

Data conguration atfactory *8

Data conguration for HARTcommunication type

Software damping, Descriptor, MessageCA

Data conguration for BRAINcommunication type

Software dampingCB

Advanced diagnostics *14 Multi-sensing process monitoring• Impulse line blockage detection *15

• Heat trace monitoring

DG6

Material certicate *13 Cover ange, Process connector, Manifold, Orice, and Spacer M12

Pressure test/Leak test certicate *12

Test Pressure: 16 MPa (2300 psi) Nitrogen(N2) Gas *11

Retention time: one minute T12

Contact Yokogawa representative for the codes indicated as ‘-’.*1: Applicable for Electrical connection code 2, 4, 7, 9, C, and D.*2: Not applicable for option code /AL.*3: Not applicable with color change option.*4: Check terminals cannot be used when this option code is specied. Not applicable for output signal code F.*5: The unit of MWP (Max. working pressure) on the name plate of a housing is the same unit as specied by option codes D1, D3, and

D4.*6: Applicable for vertical impulse piping type (Installation code 2, 3, 6, or 7) .*7: Applicable for output signal codes D and E. The hardware error indicates faulty amplier or capsule.*8: Also see ‘Ordering Information’.*9: Not applicable for amplier housing code 2.*10: 316 or 316L SST. The specication is included in amplier code 2.*11: Pure nitrogen gas is used for oil-prohibited use (option codes K1, K2, K5, and K6).*12: The unit on the certicate is always Pa unit regardless of selection of option code D1, D3 or D4.*13: Material traceability certication, per EN 10204 3.1B.*14: Applicable only for output signal code -E.*15: The change of pressure uctuation is monitored and then detects the impulse line blockage. See TI 01C25A31-01E for detailed

technical information required for using this function.




IM 01C25K01-01E

9.4 DimensionsUnit: mm (approx. inch)

9 5 ( 3 .

7 4 )

242(9.53)

129(5.08)97(3.82)

5 2

( 2 . 0

5 )

5 2

( 2 . 0

5 )

9 7 ( 3 . 8

2 )

9 7 ( 3 .

8 2 )

4 1

( 1 .

6 1 )

4 1

( 1 .

6 1 )

Electrical connectionfor code 5, 9, A, and D.

(optional)

External indicator Conduit connection

Integral indicator

(optional)

Zero adjustment

Ground terminal

Mounting bracket

(L-type,optional)

Process connections

Process connections

Process connections

Conduit connection

ø 7 8 ( 3 . 0

7 )

ø 7 0 ( 2

. 7 6 )

39

(1.54)

12

(0.47)

5 4

( 2

. 1 3 )

2-inch pipe

(O.D. 60.5 mm)

Vent/Drain plugs

6 ( 0 . 2

4 )

54

(2.13)6

(0.24)

1 7 8

( 7 .

0 1 )

1 4 5 ( 5 .

7 1 )

1 2 4

( 4 .

8 8 )

4 7

( 1 . 8

5 )

95(3.74)

89(3.50)

115(4.53)

41

(1.61)

110(4.33)

12

(0.47)

39

(1.54)

ø 7 0

( 2 .

7 6 )

1 2 9 ( 5 . 0

8 )

ø 7 8 ( 3 . 0

7 )

67

(2.64)

Drain plug

2-inch pipe

(O.D. 60.5 mm)

Vent plug

Zeroadjustment

Ground terminal

Mounting bracket

(Flat-type,optional)

Electrical connectionfor code 5, 9, A, and D.

Conduit connection (optional)

External indicator Conduit connection

Integral indicator

(optional)

Process connector

Horizontal Impulse Piping Type (Installation code 9)

*1: When Installation code 2, 3, or 8 is selected, the flow direction on above figure is reversed.

*2: When Option code K1, K2, K5, or K6 is selected, add 15 mm(0.59 inch) to the value in the figure.

Vertical Impulse Piping Type

Shrouding bolt

(for flame-proof type)

Shrouding bolt

(for flame-proof type)

178(7.01)

2 3 1 ( 9 . 0

9 ) 2

3 1 ( 9 . 0

9 )

5 8 ( 2 . 2

8 )

5 8 ( 2 .

2 8 )

1 4 6 ( 5 .

7 5 ) * 2

163(6.42)

9 5 ( 3 . 7

4 )

242(9.53)

178(7.01)

129(5.08)97(3.82)

63

(2.48)

63

(2.48)

163(6.42)

Flow direction*1

Manifold

Manifold

Flow direction*1

Process connector upside (Installation code 6)Process connector downside (Installation code 7)

Lowpressureside

Highpressureside

Highpressureside

Lowpressureside

F0903.ai

SUPPLY

CHECK

or

ALARM

+ –

+ –

Terminal Configuration

Power supply and output terminal

External indicator (ammeter) terminal*3*4

or

Status contact output terminal*4

(when /AL is specified)

Ground terminal

Communicationterminals (BT200 etc.)connection hook

Terminal Wiring

*3: When using an external indicator or check meter, the internal

resistance must be 10 Ω or less. A check meter or indicatorcannot be connected when /AL option is specified.

*4: Not available for fieldbus communication type.

Check meterconnection hook*3*4

SUPPLY +

SUPPLY – CHECK – or ALARM –

CHECK + or

ALARM +

+ –

F0904.ai




IM 01C25K01-01E

< Factory Setting >

Tag Number As specied in order Amplier Damping *2 ‘2 sec.’ or as specied in order Output Mode ‘Linear’ unless otherwise specied in order Calibration Range Lower Range Value As specied in order Calibration Range Upper Range Value As specied in order Calibration Range Units Selected from the followings. Only one unit can be specied.

[Differential/gauge pressure transmitter]mmH2O, mmH2O(68°F), mmAq, mmWG, mmHg, Pa, hPa, kPa, MPa, mbar,bar, gf/cm2, kgf/cm2, inH2O, inH2O(68°F), inHg, ftH2O, ftH2O(68°F) or psi.[Absolute pressure transmitter]torr, Pa abs, hPa abs, kPa abs, MPa abs, mbar abs, bar abs, mmH2O abs,mmH2O abs(68°F), mmHg abs, gf/cm2 abs, kgf/cm2 abs, inH2O abs,inH2O abs(68°F), inHg abs, ftH2O abs, ftH2O abs(68°F) , atm, or psia.

Display Setting Designated differential pressure value specied in order. (%, Engineeringunit or user scaled value.) Display mode 'Linear' or 'Square root' is also asspecied in order.

Static Pressure Display Range*1 '0 to 16 MPa' for all capsules.Display unit is selectable from the units listed in above 'Calibration RangeUnits'.

*1: For differential pressure transmitters only.

*2: To specify these items at factory, /CA or /CB option is required.



i

Revision Information Title : EJX115A

Low Flow Transmitter

Manual No. : IM 01C25K01-01E

Edition Date Page Revised Item

1st July 2008 — New publication2nd Aug. 2009 2-1 2.1 • Replace a name plate.

2-12 2.10 • Revise standards.2.11 • Revise information of PED.

9-3 9.2 • Modify descriptions of materials.9-5 9.3 • Add /A1and /DG6.

3rd Apr. 2010 2-1 2.3 • Add limitation of ambient temperature for /HE.

2-4 to 2-11 2.9 • Add limitation of ambient temperature for /HE.

9-3 9.1 • Add material for cover O-rings

9-5 9.3 • Add /HE.

9-7 9.4 • Correct dimensions.4th Mar. 2012 2-39-39-4

2.99.19.2

• Add note for blind plugs.• Change description for a plate material.• Add amplier housing code 3.

low flow transmitter

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