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Thermocouple temperature transmitters convert the small millivolt (mV) output of a thermocouple to a current signal (typically 4-20 mADC) that is immune to noise and voltage drops over long distances. They are used with thermocouple temperature probes, bimetallic devices that are suitable for various temperature sensing applications. Isolated thermocouple temperature transmitters eliminate ground loop problems by isolating the transmitter input from the transmitter output. Output options include analog current, analog voltage, or relay/switch output. 

Metal type is an important consideration when selecting thermocouple temperature transmitters. Base metal thermocouples can measure different temperature ranges, depending on the sensor material. Each type or designation represents a specific metal type and temperature range. Type E (chromel/constantan) has a typical temperature range of -270° C to 1000° C. Type J (iron/constantan) has a temperature range of -210° C to 1200° C. Type K (chromel/alumel) has a temperature range of -270° C to 1372° C. Type N (nicrosil/nisil) has a temperature range of -270° C to 1300° C. Type T (copper/constantan) has a temperature range of -270° to 400° C. For noble and refractory metals, choices include type B (platinum 30%/rhodium) with a temperature range of 0° C to 1820° C; Type S (platinum 10%/ rhodium) with a temperature range of -50° C to 1768° C; Type R (platinum 13%/rhodium) with a temperature range of -50° C to 1768° C; and Type W (tungsten/rhenium) with a temperature range of 0° C to 2300° C.

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Products & Services Related to Temperature Transmitters, Thermocouple
Temperature Transmitters, RTD
Resistance temperature detector (RTD) temperature transmitters convert RTD resistance measurements to current signals, eliminating the problems inherent in RTD signal transmission via lead resistance.

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Engineering Web: Temperature Transmitters Thermocouple
Pages: 1 - 3 of 189
OMEGA's Temperature Technical Reference Section
Properties of Thermocouple and Extension Grade Wire - Limits of Error(Accuracy), Temperature Range, Color Codes and Useage Guides.
See OMEGA Engineering, Inc. Information
Temperature
Thermocouple Wire ? RTDs(PT100s) ? Temperature Sensor Manufacturing
See OMEGA Engineering, Inc. Information
Temperature Transmitters: YTA Temperature Transmitters...
Temperature Transmitters YTA Series Temperature Transmitters
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Part Numbers for Temperature Transmitters Thermocouple
Part # Distributor Manufacturer Product Category Description
07WX1324 Newark Status All Supplier Direct Ship Temperature Transmitter; Approval Bodies:En55015, Iec 801-2,3,4; Input Type:Insulated Junction J K Or T Sensor; Length / Height, External:23Mm; Output Type:4-20Ma; Sensor Type:Thermocouple; Temperature, Ambient Ta:70(Degree C);
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