Magnetostrictive Level Transmitter

Overview

“Söm-TekTM ” The SKMT liquid level transmitter satisfies the demand for an analog communication interface for sightglass (bypass chamber) applications. The SKMT transmitter provides a 4-20 mA output for most magnetic level gauge manufacturers and allows for mounting external to the chamber without interrupting the process.

SKMT transmitters are modular in design offering a selection of mounting options and pipe styles. The modularity also offers simple field replacement. Subject to local electrical codes, the sensing element and electronics can be removed from the transmitter pipe without disturbing the operation of the process saving both time and money.

The model SKMT transmitter uses HART communication for setup, calibration, and diagnostics. HART can be utilized via a hand-held communicator or with the Som-Tek setup software via a PC and HART to serial converter. The optional on-board display and keypad is also provided for local indication and programming.

WE GUARANTEE OUR QUALITYSATISFY YOUR REQUIREMENT

Magnetostrictive Level Transmitter

4 to 20 mA Analog Output with HART®

No Scheduled Maintenance or Recalibration

High Accuracy and Repeatability

AMS Aware

Explosion-proof and/or Intrinsically Safe

Features

Inventory Control

Process Vessel

Bypass Chamber

Applications

Petroleum and Petrochemical

Power Generation

Specialty Chemical

Markets

All specifications are subject to change. Contact SONIC MEASURE for specifications and engineering drawings that are critical to your application. Drawings contained in this document are for reference only.

Current Pulse Start pulse Magnetic

Float Assembly

Sensor Wire

Product Specificatioins

Dual Chamber COMPATIBILI TY MRA3/4 chamber compatibility avalible

Parameters Speci�cations

LEVEL OUTPUT

Measured variable:

Output signal /Protocol: 4 to 20 mA with HART®

Order length: Rigid pipe: 508 mm (20 in.) to 3658 mm (144 in.) § ∆∆ Contact factory for longer lengths.§ Order length equals the measurement range plus

the inactive zone.

Non-linearity: 0.02% F.S. or 0.794 mm (1/32 in.) *

* Whichever is greater

Repeatability: 0.01% F.S. or 0.381 mm (0.015 in.) *(any direction) † Contact factory for alternative materials.

ELECTRONICS

Input voltage:

Fail safe:

10.5 to 36.1 Vdc, 28 Vdc maximum for I.S. ATEX approval

High (21.4 mA), or Low (3.8 mA)

Reverse polarity protection: Series diode

Lightning/Transient protection:

Stage 1: Line-to-ground surge suppression; IEC 61000-4-5Stage 2: Line-to-line and line-to-ground transient suppressors; IEC 61000-4-4

CALIBRATION

Zero adjust range: Anywhere within the active length

Span adjust range: Full scale to 152 mm (6 in.) from zero

Parameters Speci�cations

ENVIRONMENTAL

Enclosure rating: NEMA Type 4X

Humidity: 0 to 100% relative humidity, non-condensing

Operating temperatures:

Electronics: -40 °C (-40 °F) to 71 °C (160 ºF)Sensing element:

-40 °C (-40 °F) to 1150°C (257 °F) ◊Higher temperatures are available using a small insulation pad.

◊. Contact factory for speci�c temperature ranges.

FIELD INSTALLATION

Housing dimensions:

Single cavity:127 mm (5 in.) by 123 mm (4.85 in.) 121 mm (4.75 in.) O.D.

MOUNTING

Rigid pipe: Hose clamp to chamber

WIRING

Connections: 2-wire shielded cable twisted pair,

DISPLAY

Measured variables: Product level

Size: 13 mm (0.5 in.)

Number of digits: 16

Total LeProduct levelvel or Interface Level

ELECTRICAL CONNECTIONSDual Compartment Housings: 3/4 in. cond¾ in. conduit opening, M20 for ATEX Version Single Cavity: 3/4 in. conduversionit opening, M20 for ATEX

explosion proofFM 3615C22.2 No. 30

Class I, Division 1, Groups B, C and D ••∆Class II, Division 1, Groups E, F and G ••Division 1, NEMA Type 4X

Intrinsically safe

FM 3610C22.2 No. 157

Class I, Division 1, Groups A, B, C and DClass II, Division 1, Groups E, F and GClass III, T4Division 1, NEMA Type 4X

•• Explosion-proof housing required

eN 50020 PTB 00 ATEX 2069X

II 1/2 G bzw. II 2 GEEx ia IIC T4 bzw.

The SKMT transmitter programming can also be performed by using handheld HART communicator device such as the Rosemount® 375 or 475.

ability to adjust the 4 and 20 mA seAny SKMT transmitter that is purchased with a display has the tpoints by pressing the appropriate button located at the bottom of the display.

Agency Approvals

HART ART® handheld communicator programming

Setpoint programming using the display

II 1/2 G bzw. II 2 GEEx d IIC T6 bzw.

SKMT E200 SKMT E300

SKMT A200

Level and interface■

■ Accuracy ±1mm 或 0.03％ FS

■ Maximum ML: 22.3m

■ Proc. Temp.: -40~121℃

■ Proc. Pres.: Vaccum~5MPa

■ IP68

SKMT A100

Dual Housing■■ Measuring level & interface■ Accuracy: ±0.38mm or 0.01％ FS■ Measureing Range: 0.15~9.1m■ Proc. Temp.: -196~427℃■ Proc. Pres.: Vaccum~26MPa■ IP 68

Bundled with MLG■■Single Housing■ Measuring level only■ Accuracy ±1mm 或 0.03％ FS■Measureing 0.15~6.1m■Proc. Temp. -40~260℃■ IP67

■■■■■■■

Dual HousingMeasuring level & interfaceAccuracy: ±0.38mm or 0.01％ FSMeasureing Range: 0.15~9.1m Proc. Temp.: -196~427℃Proc. Pres.: Vaccum~26MPa IP68

Single Housing■■■■

Measureing Range: 0.15~6.1m

■ Proc. Temp.: -74~149℃

■Proc. Pres.: Vaccum~15MPa

IP 67

Accuracy: ±1mm or 0.03％ FS

SKMT A300

■■■■■■■

Dual Housing with MLGMeasuring level & interfaceAccuracy: ±0.38mm or 0.01％ FSMeasureing Range: 0.15~9.1m Proc. Temp.: -196~427℃Proc. Pres.: Vaccum~26MPa IP68

Som-Tek SKMT Product Models

TRANSMITTER MODEL = 1SKMT = Magnetostrictive transmitter

TYPE = 2A100= Direct Insertion A200 = with External Chamber A300 =Bundled with SKMG

Installation = 3

S = side - side

=4

Material of EC Chamber =5

Housing Type =6

TR = 90° , housing top rightBR = 90° , housing bottom right

Electronics MountingT = Integral electronics top B = Intergal electonics bottom

=7

= Industrial pipe, 5/8 in. OD = Industrial pipe, ½ in. OD

MATERIALS OF Probe

=8

PROCESS CONNECTION TYPE =

9

X = Refer processs connection datasheet=

10

M4 = 4-20mA single loop

=

11

TEMPERATURE

0 = 0-121°C

UNIT OF MEASUREMENT =12

M =

Metric (millimeters) Encode length in millimeters if using metic

U = US Customary (inches) Encode length in inches if

13-17LENGTH=Ordr Length based on unit of measurement

Rigid/Sanitary transmitter: 508 mm (20 in.) to 3658 mm (144 in.) SPECIAL =

18S = Standard product X = Engineering special

E = Alumnim Single without display

Ordering Information

T = top X = other

Note: contact factory for other materials 1 = 304L stainless steel 2 = 316L stanless Steel 3 = HC-276 4 = Others

F = Aluminim Single with display

G = Stainless Steel Single without display

A = Aluminum Dual with display

B = Aluminum Dual without display

C = Stainless Steel Dual with display

D = Stainless Steel Dual without display

= 316L stainless steel = 316L stainless steel Probe Size

1 = 121-204 °C 3 = -73 - 0 °C 2 = 204 - 427 °C 4 = -196 - -73 °C

OUTPUT

M4L = 4-20mA single loop with LCD M4LH = 4-20mA single loop with LCD and HART

M4LM = 4-20mA output with LCD and Modbus M4LP = 4-20mA output with LCD and Profibus-DP

Programming and hardware accessories

HarDWare Part NuMBer

Hart to rs-232 adapter(SMAR H1-311) 380068

Process Connection Chart (

1/2” thread (only available to MBT series)3/4” thread1” thread

1-1/2” thread

2” thread

Others N/A

Magnetic Level Gauge Data Sheet

Specification Model(use selection guides on page 12 and 13)

CustomerInformation

Company:

Address:

State: Country:

Contact:

Tel:

Fax:

E-mail:

Name of medium: Density of medium: Viscosity of medium: Installation:Maximum operation pressure: Maximum operation temperature: Process connection: Materials of probe:Types of probe: Materials of chamber: Materials of components: Types of transmitter:Forms of output: Measuring range: Others:

(only available to magnetostrictive level transmitter) (only available to magnetostrictive level transmitter)(only available to float level transmitter)(only available to float level transmitter)

(insert length/spacing of flanges)

liquid level liquid level/interface

top mounting side mounting other

Yes No Yes No

Turbulence or fluctuation of liquid surfaceFlow or stir of liquidVibration of container Yes No

Address: 7545 Irvine Center Dr, Suite 200, Irvine CA92618

Tel: +1(888)959-5266

Email: Contact@sonicmeasure.com

Http://www.sonicmeasure.com

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