Temperature transmitters


In 1974, INOR launched the world’s first temperature transmitter which could be built into the connection head of a temperature assembly to convert the sensitive thermometer signal into a stable, noise-immune signal directly at the measuring point. KROHNE INOR has an extensive programme, based on years of experience developing transmitters, covering low to high-performance accuracy, fail-safe measuring that fits into all kinds of applications in the process industries.

Typical industries include:

  • Machine-building industry
  • HVAC applications
  • Energy & power generation
  • Petrochemical
  • Oil & gas


  • Analogue temperature transmitters for basic applications
  • Digital, universally programmable state-of-the art transmitters for demanding applications
  • Fits any B-connection head and on DIN rail
  • Excellent measurement accuracy with high precision, long-term stability and low temperature drift
  • HART® 6 compatible transmitters
  • PROFIBUS® interface available
  • Diagnostic functions for high process safety: monitoring of isolation resistance (SmartSense), sensor drift, sensor breakage and short circuit
  • Dual sensor input TC and RTD, 2-, 3- and 4- wire (4-wire on OPTITEMP TT 51 R only) with automatic back-up in case of sensor failure (redundancy)
  • High galvanic isolation
  • NAMUR compliance: NE 21/NE 43/ NE 53/NE 89/NE 107
  • 10-g vibration resistance
  • 50-point individual sensor linearisation
  • Communication options: PC, FC375/475, AMS, PDM, EDD, DTM
  • Ex-approval acc. to ATEX Ex i and Ex n (non incendive) approvals
  • SIL2 (acc. to IEC 61508)
  • Configuration via PC without external power supply



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