Resistance (RTD) cable sensor for measurement of soil temperature

  • To be inserted or buried in the ground
  • Stainless steel sheath and tapered tip, IP68 rated
  • -40…+115°C / +239°F

OPTITEMP TRA-W80 – Standard version

Resistance (RTD) cable sensor OPTITEMP TRA-W80 – Standard version

The OPTITEMP TRA-W80 is a cable sensor (RTD) for soil temperature measurement or similar applications. The heavy duty sensor is designed to withstand high pressures and harsh environments. The robust, oil-tight cable can handle a maximum tensile load of 900N. Its cable can be pulled so as to move the sensor even if buried. The ground temperature sensor features a Pt100 or Pt1000 measuring element that is placed in the tip of the tube filled with heat transfer compound for fast response times. The measuring range of the sensor is -50…+200°C / -58…+390°F. The OPTITEMP TRA-W80 comes with an oil-tight and UV proof Hytrel® insulated connecting cable as standard.

Product highlights

  • Temperature measurement in harsh environments and subsoil applications (e.g. underground pipelines)
  • Heavy duty design: oil-tight, vibration and UV proof, IP68
  • Sheath material: Stainless steel (1.4404 / 316L)
  • Tolerance class A according to IEC 60751 as standard
  • Available with Hytrel® insulated connecting cable
  • Standard or customised lengths
  • Ingress protection: IP68

Typical applications

  • Monitoring of soil temperature to determine the frost depth for save pipeline operation
  • Suitable for heavy duty applications in almost all industries

Technical data

Measurement principlesResistance (RTD)
Measured mediaGases, Liquids, Solids
Measuring pointSoil
Measuring insert typeNon-replaceable RTD
Measuring insert replaceableNo
RTD element type1 x Pt100, 2 x Pt100
RTD configuration2-wire, 4-wire
Temperature sensor connection type optionFlying wires, Hyrtel® insulated connecting cable
Sheath diametersØ24 mm / 0.94"
Process temperature-40…115°C/
Sensor mountingPlug-in