Thermocouple (TC) temperature assembly for lower temperature applications

  • Thread connection
  • DIN-style based on form 8, welded multipart thermowell with reduced tip
  • -40…+150°C / +302°F

OPTITEMP TCA-S21 – Standard version

Thermocouple (TC) temperature assembly OPTITEMP TCA-S21 – Standard version

The OPTITEMP TCA-S21 is a threaded thermocouple (TC) assembly with a reduced welded multipart thermowell (based on form 8). The industrial temperature assembly for standard applications is suitable for temperature measurement of liquids and gases where a fast response time is required. The TC sensor can be used in pipes and tanks at low to medium pressures and flow velocities. It is predominantly used in applications with lower process temperatures up to +150°C / +302°F.

Product highlights

  • Temperature measurement of liquids and gases
  • Thermowell material: 1.4404 / 316L or 1.4571 / 316Ti
  • Standard or customised lengths
  • Different connection heads available (IP54…IP68)
  • With optional temperature transmitter

Typical applications

  • Standard applications with lower temperatures up to +150°C / +302°F
  • Temperature measurement in pipes and tanks, at low to medium pressures and flow velocities
  • Basic measuring tasks in various industries:
    • Chemical and petrochemical
    • Oil and gas
    • Power generation
    • Machinery and apparatus / OEM
    • Iron and steel
    • Pulp and paper

Product details

Alternative product categoriesTC probe, Thermocouple probe

Technical data

Measurement principlesThermocouple (TC)
Measured mediaGases, Liquids
Measuring pointPipe, Tank
Temperature sensor connection type optionCeramic terminal block, Flying wires, Temperature transmitter
Measuring insert replaceableYes
Sensor mountingScrew-in
Thermowell diametersØ11 mm / 0.43", Ø12 mm / 0.47"
Assembly with thermowellYes
Measuring insert typeReplaceable spring loaded mineral isolated measuring insert OPTITEMP TC 100
Thermowell tip designReduced
Thermowell typeMultipart welded
Thermowell form (according to DIN 43772)Form 8
Wetted partsAustenitic stainless steel (1.4404/316L), Austenitic stainless steel (1.4571/316Ti)


Process connections

Thread connectionsMale:
G½, G¾, G1
½ NPT, ¾ NPT