Thermocouple transmitters convert Type J, K, T, E, R, S, B, or N thermocouple sensor input signals to 4-20mA or 0-10V DC outputs for interfacing to controllers or other instrumentation.

Showing all 10 results

  • Compare

    DT233: Thermocouple/milliVolt Input Two-wire Dual Transmitter

    • Dual channels
    • Universal thermocouple, mV input
    • 4-20mA outputs (sink/source)
    • 7-32V DC loop/local
    Read more
  • Compare

    DT333: Thermocouple/milliVolt Input Four-wire Dual Transmitter

    • Dual channels
    • Universal thermocouple, mV inputs
    • 6-32V DC local/bus power
    Select options
  • Compare

    TT233: Thermocouple/Millivolt Input Two/Three-Wire Transmitter

    • Universal TC type J, K, T, R, S, E, B, N or ±100mV input
    • 4-20mA ouput (sink/source)
    • 12-32 V DC loop/local power
    The TT233 model is a space-saving two-wire transmitter that isolates and converts a millivolt or thermocouple sensor input to a proportional 4-20mA control signal. Power is received from the output loop current or a DC supply when using a three-wire connection. The transmitter performs thermocouple linearization, cold junction compensation, and lead-break detection.
    Select options
  • Compare

    TT333: Thermocouple/milliVolt Input Four-wire Transmitter

    • Universal TC/millivolt input (TC type J, K, T, R, S, E, B, N or ±100mV input)
    • Universal current/voltage output
    • 12-32V DC local/bus power
    Select options
  • Compare

    655T, 656T: Single or Dual Channel, Thermocouple/milliVolt Input, Loop-powered Transmitter

    • TC (types J, K T, R, S, E, B, N), ±1V DC, selectable range/type input
    • 4 to 20mA DC output
    • 12-50V DC from output loop power
    • DIP-switch configuration, signal linearizer, push-button calibration
    Read more
  • Compare

    801T: Universal Input Intelligent Temperature Transmitter

    • 0 to 20mA DC, 0 to 10V DC output
    • Mechanical relay (25V @ 5A) alarm
    • 10-36V DC power
    • Software configured
    • Performs linearization, square root extraction, and optional limit alarm functions
    Read more
  • Compare

    ST132: Thermocouple/milliVolt Input Head-mount Transmitter

    • Universal thermocouple (8 types) or ±100mV input
    • 4-20mA output
    • Loop-powered, 7-32V DC
    Select options
  • Compare

    ST133: Isolated Transmitter; Thermocouple/mV Input

    • TC type J, K, T, R, S, E, B, and N or ±100mV input
    • 1500V isolation
    • 4 to 20mA DC output
    • USB-configured
    Select options
  • Compare

    uB37, uB47: Thermocouple Field Input Module

    • Bluetooth® wireless configuration option
    • Thermocouple field input
    • Voltage host output
    Select options
  • Compare

    250T-TC, 350T-TC, 450T-TC Loop, DC, or AC-Power Transmitter

    • J, K, T, E, R, S, B Thermocouple Input
    • DC Voltage or DC Current Output
    Select options

Thermocouple Temperature Transmitters

Important Thermocouple Information

The most important thing to remember about the TC is it that it’s the temperature difference between ends that produces the charge imbalance that drives the small voltages, not the junction of the two dissimilar metals that form the thermocouple circuit.

While you can form your own TC circuit with different combinations of two conductors, standard TC types using specific metals and alloys are available that produce larger, stable, and predictable output voltages relative to applied thermal gradients. These standard types have their voltage over temperature tabulated in TC type tables relative to a cold junction at 0°C and 0.000mV.

These TC voltages could have been referenced to another temperature than 0°C, but 0°C was chosen because it is easily reproducible within ±0.2°C using a mixture or slurry of ice and water. By holding the cold junction at 0°C, the temperature of the other end directly corresponds to its thermoelectric voltage found by look-up in the standard TC type table.

If you'd like to discuss Acromag's thermocouple solutions with a sales engineer please call or complete the form below for a call back.

  • This field is for validation purposes and should be left unchanged.