Resistance (RTD) compact sensor for industrial process and OEM applications

  • Thread connection
  • Compact housing with built-in transmitter and electrical valve connection
  • -50…+150°C / -58…+302°F

OPTITEMP TRA-C20 – Standard version

Resistance (RTD) compact sensor OPTITEMP TRA-C20 – Standard version

The OPTITEMP TRA-C20 is a compact resistance sensor (RTD) with optional integrated transmitter and valve connector (EN 175301-803). The compact sensor is particularly designed for applications of OEM manufacturers where restricted installation space is an issue. The OPTITEMP TRA-C20 is a highly accurate sensor featuring great reliability over the long term, and excellent measuring stability. The compact sensor is suitable for measuring the temperature of liquids, gases and vapour from -50…+150°C / -58…+302°F.

Product highlights

  • Temperature measurement of liquids and gases in confined spaces
  • Vibration and shock resistant design
  • With valve connector
  • Sheath: Stainless steel (1.4404 / 316L)
  • Long-term stability: Uncertainty of ±0.1% of span per year
  • With optional built-in transmitter (4…20 mA)

Typical applications

  • Temperature measurement of liquids and gases in pipes or vessels, even at higher pressures and flow velocities
  • Particularly designed for applications of OEM manufacturers where restricted installation space is an issue (e.g. oil bearings on mobile pumps and other machinery)
  • Basic applications in various industries:
    • Plant engineering
    • Machinery and apparatus / OEM

Product details

Product categoryResistance (RTD) compact sensor
Alternative product categoriesPotentiometer, Pt100 element, Pt100 probe, Resistance temperature detector, Resistance thermometer, RTD

Technical data

Product typeTemperature sensor
Measurement principlesResistance (RTD)
Measured mediaGases, Liquids
Measuring pointMachinery, Pipe, Tank
Measuring insert typeNon-replaceable RTD
Measuring insert replaceableNo
RTD element type1 x Pt100
RTD configuration3-wire, 4-wire (on request)
Temperature sensor connection type optionBuilt-in transmitter, Valve connector (EN 175301-803)
Sheath diameters6 mm / 0.23"
Process temperature-50…150°C/


NAMUR complianceNE 21, NE 43


Analogue outputs4…20 mA

Process connections

Thread connectionsMale:

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