instructional manual for riken combustible gas monitor

7/21/2019 Instructional Manual for Riken Combustible Gas Monitor

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l This is single channel type combustible gas monitor app

gas sensor.

l The leakage in air shall be detected by combustibler and the

measuring result is shown in 4digit LED.

l GP-41A will give gas detection information to theeniorsystem by 40mA signal. Standard

l One external gas alarm contact isquipped Standard *1)

*. Standardutputcombination is 40mA gas detctionnformationand one external gas a

option, following combination is available.

1) 40mA gas detectionnformationOne external trouble alarm contact

2) Two external gas alarm contact

3) One external gas alarm contact/One externaltrouble alarm contact

1-3. DANGER WRNING CAUTION

This mark means the matter makes serious

directly.

When the operation and treatment are not

manual, it makes serous damage on the human body o

When the operation and treatment are not

manual, it may make the damage on the

It means the advice on the operation proc

D NGER

W RNING

C UTION

NOTE



l Detector head

Do not use any detector head except specified detecGas detection can not

monitor or detector head shall be damaged.

l Power source

Before power on, check that the powerource voltage is within the given v

make power on.

l Necessity of protection grounding

Do not cut the protection ground wire inside and out

protection ground terminal. It makes the unit dangcondition.

l Fault of protection function

When there is a fault for protection function such

startup, check that there is no fault on protection fu

l Fuse

For protection of security, use the designatedrating power current, power

replacement of fuse shall be done after turning powe

than the specified or make shortcircuit fuse holder.

l Operation in gas

Do not operate in the plae where combustible gas or explosive g

dangerous to operate in such an atmosphere.

l External connection

After making sure protection ground, connect to exte

l Maintenance of instrments inside

Any work with removing cover such as replacement of

switchoff.

l Measures at gas alarm

When detect gas more than alarm preset point, it is

measures by customerf decision.

W RNING



l Do not use walkytalky near this gas detector.

When this detector receives the electric waves by watalky etc near from this

cable, this will affect the reading. When use thtalky, operate it at the

influence of electric wave ejection.

l When make power on again, make it after an interv

When make power on within 5 seconds, there may be n

C UTION



l Maintenance space over 100mm below the instrumenthatslide cover

can be opened.

l For wall mounting type, maintenance space over 20

secured so that the angle can be istalled.

Wall mouting type Panel mounting type

Installation hole

Maintenance space

Maintenanc space

crew hole

Body

Body

ngle

Frame



l Non-excitation

Nonexcte normally)

l ON-LAM

ontact close at alarm)

Alarm contact control unit

4-0mA transmissionTransmission

GP-41A

Buzzer



4- 1. Before operation

Not only a first experienced client but also an experienced client shall keep the cautionary items. If not kept,

the trouble may cause and could not make normal gas detection.

4- 2. Installation place

When install, avoidthe direct sun beam place or that of drastic change of temperature. Because dew

takes place inside of instrument and it may not follow the drastic change of temperature.

As this is composed of fine electronics parts, install where the vibration and shock should not

take place and be stable.

Avoid to installing at the place where high frequency is generated around.

l Do not put detector side by side or near with the

l Do not make cable at parallel wiring nor be near.

Do not install and mae gas detection at the place where the

case, make as detection by extending the sampling

This instrument is required to make maintenance reg

where there is danger at mintenance time.

When required to stop the system ataintenancetime, unable to maintain i

part of system or unable to detach the case due to

place.

4 OPERATION

Do not install where direct sun beam is given or there

Do not install where the vibration or shock may take

Separate thedetector from the noise generating source M

Do not install at the place where the detection gas

Dangerous place at maintenance service such as high

The place where unable toake maintenance

CAUTION



4- 3. Caution at system installation

Unstable power and noise may cause error of performance and alarm.

For the system to use this detector, it is required to make design based on this

manual description.

(1) Use stable power

While the system gets stable at power on and power failure, the external output and alarm contact may be on

and the care for it must be taken. In such case, use the standby battery or take an appropriate action in the

receiver side. Supply the following power to this detector.

Power voltage 100VAC- 15% to 220VAC+20% (50/60Hz)

Power failure Approx. 100msec.

tolerance time (For power failure of over 100msec, it re - starts.)

To warrant the continuous operation, install the standby

battery outside.

Others Do not connect with power involving high power load and high

frequency noise.

According to requirement, use line filter and separate it from

noise source.

(2) Designing to consider heat radiation

When install the closed self- standing control panel, mount th e fans in the upper and lower part.

Machine that grounding construction is n

CAUTION



l Relayed by the low voltage relay and operate by

Spark Killer : SK)Diode etc for DC) suited for relay coil d

l Add CR circuit to the load sidef relay relayed on the request.



l Contact part of relay is melted adhesively andhecontacts can no work.

l High voltage is put inside of indicator/alarm uni

damaged.

l As it is big noise,he trouble action may be taken by the r

l Irrespective of inductive load, there is the possibnforeseeablenoise intrusion for

Aboveroublemay be generated.

*. As the inductive load, there are following saples.

Patlight, External relay, Buzzer, Siren, Fan, Flotoretc.

l The inductive load shall not be used in principle

l When use the inductive load, make the contact amp ifica

belongs to the inductive load, useherelay driven by te low voltageithinAC100V) and it i

protected by an appropriate surge killer.

GP-641A

Alarm contact

V

SK

L o a d

V

SK

C oi l

Power supplyRelay

(Low pressure relay)

Power supply

CAUTION



WARNING



LN

FG

‡@

‡A

‡B

‡C

‡D

‡E

‡F ‡G

‡H

‡I

‡B

‡C

‡D

‡E

I n d i c at or / al ar m uni t

100VAC 15% to 220VAC+20% (50/60Hz)

Earth

Pump power output

CVV (4C)

External output 1 (OUT1)

External output 2 (OUT2)

P um

ow er i n

ut

D et e c t or h e a d ( s en s or )



l When make wiring construction, make caution not to d

l Applicable cable between indicator/alarm unit and d). In

case of using other cable than specified, it is out

l For power input cable, pump power cable, externa

separately and should not put in same core.

l For power cable, detector cable, signal cable, tey should not be laid out with

such as motor etc.

l Power output for pump of detector head shou d not be

applicable power supply voltage of pump of detector

indicator/alam unit. For different power supply vo tage of

required.

CAUTION



l Before making power on

Before making power on, take caution of the followiIf do not keep this, the

electrical shock danger and damage of detector.

1)Make grounding.

2)Check that the wire with the exernal is made correctly.

3)Check that the power voltage isithinthe rating.

4)During adjustment, there is the case of external alar

outside even if the contact work.

5)For security purpose, check that it is raing fuse designated or not.

5 2. Basic run flow

Normally this is used by detection mode after making pow

Power on

Startup preparation

Initial clear Approx 25 sec.)

Detection mode Alarm test mode

SET switch Press for about 3 seconds)

MODE switch Press for about 3 seconds.)

Maintenance mode

l Zero adjustment

l Alarm point change AL1, AL2)

l Sensor heater voltage inication

l External relay contact output setting.



l Before making power on, check that this instrument co

l The position of power switch is located inside of instrum

l When turn the power switch ON/OFF to the right | )gN•hand when turn to left›, it gets

•gFFh.

l When make power switchgN•h, the POWER lamp lights on.

l Initial clear Approx. 25 sec.)

1) Instrument system check

2) External output : Approx. 2.5mA 40mA spec.)

3) Alarm, trouble ation shutoff Lamp, contact)

Power switchSlide down the cover.

CAUTION



l Gas alarm : When the detection gas reaches to pre

perform. [Latched mode performance, Non latched mce after reset]

l Trouble alarm : Trouble is detected in the instrume

system troubleg-00h it is non latched mode. When return

instrument starts again from the peformancegnitial clearhsame as after power on.g.

TREATMENT AT ABNORMAL CASEh.]

6 2. Gas alarm

6--1. Gas alarm performance

1)Display

‡@ Gas density display

When exceed detection range, it shows LED displayg¿•¿•¿•¿h.

‡A Power lamp Power : Green)

Itkeeps continuous light on.

‡B Alarm lamp AL1 : Orange), AL2 : Red)

Alarmoint is two alarm levels.When reading goes to alarm preset po

on.

2)External output

‡@ 4-0mA output

The output in directly proportion to gas densityis shown. In case of overcale, it can no

output over approx 22mA.

‡A Alarm contact

When gas density reaches alarm preset point or exce

work, it will be non latched mode after reset when gder alarm point.

. NTE

Alarm point standard) is preset at 1/4 1t alarm AL1), 1/2 2

d alarm AL2) of full sca e.

performance, this is provided with 3 seconds alarm dela



l When PW/TR lamp is flickering, it is the condition

Research its cause and take an appropriate action.

l The output of detector at troubleshall be as follows.

GP41A 420mA output specification) : 0.5mA fixed)

LED displayTrouble contentMain cause

E-00 System trouble Memory trouble in the indi

E-01 NO connection of sensorConnector contact failure

Sensor cable disconnecion

9 2. Measures at trouble alarm

When any trouble was found on this instrument and gas

RIKEN KEIKI. If trouble should take place, we try

9-3. Before trouble to be considered

It may be originated fromisconnectionand short circuit between units.

l Check the wirings including equipment near around a

There is the case that operation of instrument is notc.

l Re-check the gas detection system and contact our ne

There is the case of electrical line trouble such aoff of power.

l This will be treated by the recheck of standby battery, electrical line f

transfrmer etc or those addition.



l Is it OK with power cable connection?

Connect power cable.

l Is fuse disconnected?

Search the cause of disconnection and replace itmeasues.

l Is power voltage normal?

Supply the rating power voltage.

l Is this power switch turned on?

Make power switch ON.

2)bnormal performance

<Cause and action>

l Sudden surge noise can be considered. When reco

the power aain for retart of operation. When such takes

appropriate action for noise.

3)No calibration available

<Cause and action>

l Is the calibration gas density correct?

Prepare the appropriate density gas.

l There is the possibility for sesor sensitivity drop.

The sensoreplacement is required.

4)PW/TR lamp flickering

<Cause and action>

@ System troubleg-00h

l Memory trouble inside of indicator.

Contact our nearest agent or RIKEN KEIKI.

A Sensor connection troubleg-01h

l Non-connectin of sensor, contact failure of connector

l Checkghether sensor is connectedhorghe sensor cable connector is

sensorh. If can not be recovered, contact nearest



l This instrument can not work.

<Cause and action>

l Theroubleof instrument or trouble of external power

this cause and after taking its measures, replace

. NOTE

The fuse rating for this instrument is 250V/1A.

instructional manual for riken combustible gas monitor

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