Omega SMSC-TC User guide

Specications

Inputs:

 Ranges:eldcongurable,seeTable6
 Impedance:>1MOhms
 InputBiasCurrent(burnoutdetection):

<1.5 microamp

 Overvoltage:±10Vdifferential
 CommonMode(InputtoGround): 

1500VDCorpeakAC,max
 ZeroandSpanRange:
  ZeroTurn-Up:
   0to50%offullscalerange
  SpanTurn-Down:
   100to50%offullscalerange

Outputs:

 VoltageOutput:eld-congurable
  Ranges:0-5V,0-10V
  Impedance:<10Ohms
  Drive:10mA,max.(1KOhms,min.)
 CurrentOutput:eld-congurable
  Ranges:0-1mA,4-20mA
  Impedance:>100KOhms
 Compliance:10V,max.(500Ohms,max.

@20mA)

Pin Connections

1 Power (Hot)
2 No Connection
3 Power (Neu)
4 Do not use
5 Input (+)
6 Input (-)
7 Output (+)
8 Output (-)

OMEGA ENGINEERING, INC., warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase.

omega.com info@omega.

Servicing North America:

U.S.A.:

Omega Engineering, Inc., One Omega Drive,
P.O. Box 4047, Stamford, CT 06907-0047 USA
Toll-Free: 1-800-826-6342 (USA & Canada only)
Customer Service: 1-800-622-2378
(USA & Canada only)
Engineering Service: 1-800-872-9436
(USA & Canada only)
Tel: [phone]
Fax: [phone]
e-mail: info @omega.com

For Other Locations Visit
omega.com/worldwide

The information contained in this document is
believed to be correct, but OMEGA accepts no
liability for any errors it contains, and reserves
the right to alter specifications without notice.

com

OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping
time. This ensures that OMEGA’s customers receive maximum coverage on each product.
If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return
(AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired
or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to
mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if
the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current,
heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control. Components
in which wear is not warranted, include but are not limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions
or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA,
either verbal or written. OMEGA warrants only that the parts manufactured by the company will be as specified and free of defects. OMEGA
MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND
ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY
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the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.

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WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage
whatsoever arising out of the use of the Product(s) in such a manner.

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA,
PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID
PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.

FOR WARRANTY RETURNS, please have the following
information available BEFORE contacting OMEGA.

1. Purchase order number which the product was PURCHASED,

2. Model and serial number of the product under warranty, and

3. Repair instructions and/or specific problems relative to
the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords custo mers the late st
technology and engineering. OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© COPYRIGHT 2015 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, translated, or reduced to
any electronic medium-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.

Accuracy (Including Linearity, Hysteresis):

 seeTable5

Response Time(10-90%):

 500mSec,typical

Stability:

 ±0.04%/°Coffullscalerange

Isolation:

 1500VDCorpeakACbetweeninput,

outputandpower

ESD Susceptibility:

 MeetsIEC801- 2,Level2(4KV)

Common Mode Rejection:

 DC-60Hz:120dB

LED Indicators:

 TROUBLELED:Yellow-offduring

normaldeviceoperation

 INPUTLED:Green-continuouslyonif

inputiswithinselectedrange,ashes
otherwise

 CALOKLED:Yellow-continuouslyonin

normaldeviceoperation

Thermocouple Burnout Detect:

 Field-congurableUporDownscale,or

disabled

WARRANTY/DISCLAIMER

RETURN REQUESTS/INQUIRIES

FOR NON-WARRANTY RETURNS, consult OMEGA for current repair
charges. Have the following information available BEFORE contacting
OMEGA.

1. Purchase Order number to cover the COST of the repair,

2. Model and serial number of the product and

3. Repair instructions and/or specific problems relative to the product.

Humidity (Non-Condensing):

 Operating:25to95%(@45°C)
 Soak:90%for24Hrs.(@65°C)

Temperature Range:

 Operating:0to60°C(32to140°F)
 Storage:-15to75°C(5to167°F)

Power:

 Consumption:3Wtypical,5Wmax
 Standard:120VAC±10%,50-60Hz
 Optional:240VAC

Weight:

 0.62lbs

Approvals:

ULrecognizedperstandardUL508.
 (FileNo.E99775).

SMSC-TC

Thermocouple Input, Field Configurable
Signal Conditioner

INSTRUCTION

SHEET

Shop online at omega.comSM e-mail: [email protected]
For latest product manuals: www.omegamanual.info

 FieldCongurableThermocoupleTypes
 LinearizedOutputs
 Wide-RangingZeroandSpanAdjustability(50%)

Description

TheSMSC-TC isolatingthermocoupleconditionerofferswide
ranging input and output capability. The SMSC-TC can be
eldconguredbytheusertoacceptinputfromthermocouple
typesJ,K,T,R,S,E,andBandtoprovidecurrentorvoltage
output.Theoutputislinearizedtotemperatureaccordingtothe
particularthermocoupletype.

TheSMSC-TCisathree-portindustrialisolator—theoutput
isopticallyisolatedfromtheinputupto1500V,andbothinput
andoutputaretransformerisolatedfromthelinepower.Isolation
allowsthenoisereductionbenetsofgroundedthermocouples
to be realized without creating ground loop problems and it
providesfasterresponse.TheSMSC-TC utilizes the latest in
advancedanalog/digital signal processing technology.Inad­ditiontoitsmultiplemicroprocessors,itemploysspecialASIC
circuitryforhighaccuracyandreliability.

The SMSC-TC is equipped with cold-junction compensation
(CJC)circuitry to provide ice-pointreference.Upscale,down­scale or disabled thermocouple burnout detection is switch
selectable.

Application

TheAP4351isusefulinanyapplicationrequiringanisolatedDC
outputfromathermocoupleinput.Typicalapplicationsinclude
energymanagementanddataacquisitionofprocesstempera­tures.TheoutputoftheSMSC-TCcandriveadigitalmeterfor
directdisplayorinterfacewithacomputerformonitoringand
controlapplications.

Status LEDs

ModelSMSC-TCisequippedwithtop-mountedLEDsforINPUT
(green),TROUBLE(yellow)andCALOK(yellow).Atstart-up,
boththe INPUT andthe CAL OK LEDs lightup momentarily
for1second.Afterwards, these LEDs ash alternatelyfor10
secondswhilestart-uptakesplace.

Input LED

Thisinput LEDisadiagnostictool.It remainscontinuouslylit
if the measured temperature is within the selected range of
the thermocouple. However, if the measured temperature is

M5483/0715

ProvidesIsolated,LinearizedDCOutput

inProportiontoThermocoupleInput

 EliminatesGroundLoops
 ThermocoupleBurnoutDetection
 ASICTechnologyforEnhancedReliability

outsidethe full range ofthethermocouple(forexample,fora
typeJ-belowminus200°Corabove750°C),theLEDwillash
ata rate of 4or 8Hz for under/overrange, repectively. If the
thermocoupleiswithinthefulltemperaturerange,butoutside
theselectedsub-range(forexample,ifatypeJthermocouple
issetforrange13andthetemperatureiseitherbelow375°C
orabove500°C)theLEDwillashat0.5or1Hzrespectively.

Cal OK LED

ThisLEDiscontinuouslyonwhenthedeviceisproperlystoring
thefactorycalibrationreferencevoltage.

Trouble LED

ThisLEDisoffduringnormaloperationofthedevice.IfthisLED
isoncontactAction'sTechnicalServicesGroup.

Options

U Urethanecoatingofinternalcircuitryforprotectionfrom

 corrosiveatmospheres.

C620 Factorycalibration(specify
 inputthermocoupletype,temperaturerangeandoutput).

Conguration

AmajoradvantageoftheSMSC-TCisitswiderangingcapa­bilitiesandeaseofconguration.TheSMSC-TCenables50%
inputzeroandspanadjustabilitywithintheselectedsub-range.

Forexample,range#5foranE-TypethermocoupleinTable6
species-18°Cto125°C.Sincethespancanbecontractedby
50%,thisenablesaninputspanasnarrowas50%of143°C,
or72°C.Thisspancanthenbepositionedanywherewithinthe
temperaturerange and can have a zero step-upas large as
50%ofthefullscalerange(e.g.spancanstartashighas53°C).

Unless otherwise specied, the factory pre-sets the Model
SMSC-TCasfollows:
 Input:  J-type
 Range:  0-500°C
 Output:  4-20mA
 BurnOut: Upscale

For other settings, remove the four base screws and

TC Type

Range

Number

Temperature Range

B

6 500 to 1820°C (932to 3308°F)

7 1000 to 1820°C (1832 to 3308°F)

8 500 to 1000°C (932 to 1832°F)

11 1500 to 1820°C (2732 to 3308°F)

12 750 to 1000°C (1382 to 1832°F)

E

2 -18 to 1000°C (0 to 1832°F)

3 -18 to 500°C (0 to 932°F)

4 -18 to 250°C (0 to 482°F)

5 -18 to 125°C (0 to 257°F)

8 500 to 1000°C (932 to 1832°F)

9 250 to 500°C (482 to 932°F)

10 125 to 250°C (257 to 482°F)

12 750 to 1000°C (1382 to 1832°F)

13 375 to 500° C (707 to 932°F)

14 -150 to 750°C (-238 to 1382°F)

15 -150 to 250°C (-238 to 482°F)

16 -150 to 0°C (-238 to 32°F)

J

2 -18 to 750°C (0 to 1382°F)

3 -18 to 500°C (0 to 932°F)

4 -18 to 250°C (0 to 482°F)

5 -18 to 125°C (0 to 257°F)

8 500 to 750°C (932 to 1382°F)

9 250 to 500°C (482 to 932°F)

10 125 to 250°C (257 to 482°F)

13 375 to 500°C (707 to 932°F)

14 -200 to 750°C (-328to 1382°F)

15 -200 to 250°C (-328 to 482°F)

16 -200 to 0°C (-328 to 32°F)

TC Type

Range

Number

Temperature Range

TC Type

Range

Number

Temperature Range

B

6 500 to 1820°C (932to 3308°F)

7 1000 to 1820°C (1832 to 3308°F)

8 500 to 1000°C (932 to 1832°F)

11 1500 to 1820°C (2732 to 3308°F)

12 750 to 1000°C (1382 to 1832°F)

E

2 -18 to 1000°C (0 to 1832°F)

3 -18 to 500°C (0 to 932°F)

4 -18 to 250°C (0 to 482°F)

5 -18 to 125°C (0 to 257°F)

8 500 to 1000°C (932 to 1832°F)

9 250 to 500°C (482 to 932°F)

10 125 to 250°C (257 to 482°F)

12 750 to 1000°C (1382 to 1832°F)

13 375 to 500° C (707 to 932°F)

14 -150 to 750°C (-238 to 1382°F)

15 -150 to 250°C (-238 to 482°F)

16 -150 to 0°C (-238 to 32°F)

J

2 -18 to 750°C (0 to 1382°F)

3 -18 to 500°C (0 to 932°F)

4 -18 to 250°C (0 to 482°F)

5 -18 to 125°C (0 to 257°F)

8 500 to 750°C (932 to 1382°F)

9 250 to 500°C (482 to 932°F)

10 125 to 250°C (257 to 482°F)

13 375 to 500°C (707 to 932°F)

14 -200 to 750°C (-328to 1382°F)

15 -200 to 250°C (-328 to 482°F)

16 -200 to 0°C (-328 to 32°F)

K

1 -18 to 1370°C (0 to 2498°F)

2 -18 to 1000°C (0 to 1832°F)

3 -18 to 500°C (0 to 932°F)

4 -18 to 250°C (0 to 482°F)

5 -18 to 125°C (0 to 257°F)

7 1000 to 1370°C (1832 to 2498°F)

8 500 to 1000°C (932 to 1832°F)

9 250 to 500°C (482 to 932°F)

10 125 to 250°C (257 to 482°F)

12 750 to 1000°C (1382 to 1832°F)

13 375 to 500°C (707 to 932°F)

14 -200 to 750°C (-328 to 1382°F)

15 -200 to 250°C (-328 to 482°F)

16 -200 to 0°C (-328 to 32°F)

TC Type

Range

Number

Temperature Range

B

6 500 to 1820°C (932to 3308°F)

7 1000 to 1820°C (1832 to 3308°F)

8 500 to 1000°C (932 to 1832°F)

11 1500 to 1820°C (2732 to 3308°F)

12 750 to 1000°C (1382 to 1832°F)

E

2 -18 to 1000°C (0 to 1832°F)

3 -18 to 500°C (0 to 932°F)

4 -18 to 250°C (0 to 482°F)

5 -18 to 125°C (0 to 257°F)

8 500 to 1000°C (932 to 1832°F)

9 250 to 500°C (482 to 932°F)

10 125 to 250°C (257 to 482°F)

12 750 to 1000°C (1382 to 1832°F)

13 375 to 500° C (707 to 932°F)

14 -150 to 750°C (-238 to 1382°F)

15 -150 to 250°C (-238 to 482°F)

16 -150 to 0°C (-238 to 32°F)

J

2 -18 to 750°C (0 to 1382°F)

3 -18 to 500°C (0 to 932°F)

4 -18 to 250°C (0 to 482°F)

5 -18 to 125°C (0 to 257°F)

8 500 to 750°C (932 to 1382°F)

9 250 to 500°C (482 to 932°F)

10 125 to 250°C (257 to 482°F)

13 375 to 500°C (707 to 932°F)

14 -200 to 750°C (-328to 1382°F)

15 -200 to 250°C (-328 to 482°F)

16 -200 to 0°C (-328 to 32°F)

K

1 -18 to 1370°C (0 to 2498°F)

2 -18 to 1000°C (0 to 1832°F)

3 -18 to 500°C (0 to 932°F)

4 -18 to 250°C (0 to 482°F)

5 -18 to 125°C (0 to 257°F)

7 1000 to 1370°C (1832 to 2498°F)

8 500 to 1000°C (932 to 1832°F)

9 250 to 500°C (482 to 932°F)

10 125 to 250°C (257 to 482°F)

12 750 to 1000°C (1382 to 1832°F)

13 375 to 500°C (707 to 932°F)

14 -200 to 750°C (-328 to 1382°F)

15 -200 to 250°C (-328 to 482°F)

16 -200 to 0°C (-328 to 32°F)

TC Type

Range

Number

Temperature Range

polycarbonatecasetoaccessthecongurationswitches.

2.Setthecalibratortothedesiredminimuminputandadjustthe
zeropotentiometerforthedesiredminimumoutput.

Table6:ThermocoupleRangeSettings

Referto Tables 1through 6 and Figures 1through 3 forthe
properswitchlocationsandsettings.Usingtheswitch on the
inputboardselectthermocoupletype,temperaturerange,and
thermocoupleburnoutdetection.Usingtheswitchontheoutput
board,selectdesiredtypeofoutput.Replacethecasepriorto
applyingpowertotheunit.

Calibration

1.Connecttheinputtoacalibratedthermocouplesourceand
applypower.Wait1-2hoursforthermalstabilitybeforemonitoring
thevoltage/currentoutput.RefertoPINCONNECTIONS.

Table2:Thermocoupleburnoutdetection

switchsettings

(SW1onInputBoard)

Figure1:TopView

Figure2:InputBoard Figure3:OutputBoard

3.Setthecalibratortothedesiredmaximuminputandadjust
thespanpotentiometerforthedesiredmaximumoutput.

4.Repeatsteps2and3,asnecessary,forbestaccuracy.

Table4:Outputswitchsettings

(SW1onOutputBoard)

Table5:SMSC-TCAccuracy

Mounting

Allmodulesfeatureplug-ininstallation.ModelSMSC-TCusesan
8-pinbaseandmolded-socketsSKT-SM-8P,orDIN-socketSKT-DR-8P.

Dimensions

Dimensionsareinmillimeters(inches)

Mark III

1 50 to 1760°C (122 to 3200°F)

2 50 to 1000°C (122 to 1832°F)

3 50 to 500°C (122 to 932°F)

4 50 to 250°C (122 to 482°F)

7 1000 to 1760°C (1832 to 3200°F)

R, S

8 500 to 1000°C (932 to 1832°F)

9 250 to 500°C (482 to 932°F)

10 125 to 250°C (257 to 482°F)

11 1500 to 1760°C (2732 to 3200°F)

12 750 to 1000°C (1382 to 1832°F)

13 375 to 500°C (707 to 932°F)

3 -18 to 400°C (0 to 752°F)

4 -18 to 250°C (0 to 482°F)

5 -18 to 125°C (0 to 257°F)

9 250 to 400°C (482 to 752°F)

T

10 125 to 250°C (257 to 482°F)

13 375 to 400°C (707 to 752°F)

14 -150 to 400°C (-238 to 752°F)

15 -150 to 250°C (-238 to 482°F)

16 -150 to 0°C (-238 to 32°F)

SKT-SM-8P (Track/Surface)

SKT-DR-8P (DIN Rail)