Head-mounted temperature transmitter with universal inputs and galvanic isolation

  • Input: RTD, TC, mV, Ω
  • Output: 2-wire, 4…20 mA
  • PC programmable
  • Accuracy: ±0.05%
  • Icon/Logo for SmartSense insulation monitoring

OPTITEMP TT 40 C – Standard version

Head-mounted temperature transmitter OPTITEMP TT 40 C – Standard version

The OPTITEMP TT 40 C is a universal, programmable 2-wire head-mounted temperature transmitter. The galvanically isolated high performance device works with RTD elements, thermocouple (TC) elements or other inputs (mV and Ω). The transmitter is best used for industrial temperature applications requiring high stability and accuracy as well as fast response times. It provides a temperature linear current output (4…20 mA).

The OPTITEMP TT 40 C comes with advanced functionality including error correction and sensor diagnostic for improved safety and reliability. Its unique "SmartSense" function allows insulation resistance monitoring to prevent measuring errors. The temperature transmitter is designed to be mounted in a "B connection head" or larger. As an alternative the OPTITEMP TT 40 C can also be mounted on a DIN rail using an optional rail mounting kit. A dedicated rail-mounted version for DIN rails is available with the OPTITEMP TT 40 R.

Product highlights

  • Highly precise, completely universal digital device
  • Configuration without external power supply (via PC/software ConSoft)
  • Fast response time, high speed update (300 ms)
  • 40-point linearisation
  • Sensor break monitoring and sensor error correction
  • Isolation resistance monitoring (SmartSense): fail-safe up to 95 % relative air humidity
  • Simple loop checking with calibrated output
  • High galvanic isolation: 3750 VAC
  • Suitable for connection head B or larger
  • Optional rail mounting kit for installation on a DIN rail (in accordance with DIN EN 60715)

Technical data

Transmitter mountingHead-mounted
Transmitter channels MAX1
Galvanic isolationYes
Galvanic isolation (VAC)3750 VAC
Transmitter inputPotentiometer (Ω), Resistance (RTD), Thermocouple (TC), Voltage (mV)
RTD inputCu10, Ni100, Ni1000, Ni120, Pt100, Pt1000
RTD input / wiring3-wire, 4-wire
TC InputB, C, E, J, K, L, N, R, S, T, U
Potentiometer input (Ω)0…2000 Ω
Voltage input (mV)-10…+500 mV
Transmitter programmableYes
Configuration methodPC/ConSoft software
Power supply (VDC)6.5…36 VDC
Ambient temperature-40…85°C/
Diagnostic functionsIsolation monitoring (SmartSense), Sensor break detection, Sensor error correction, Sensor short circuit detection, Signal filtering function


NAMUR complianceNE 21, NE 43


Analogue outputs4…20 mA