Thermocouple (TC) temperature assembly for higher flow velocities and pressures

  • Weld-in connection
  • DIN-style based on form 4, barstock thermowell with tapered tip
  • -40…+600°C / +1100°F

OPTITEMP TCA-T30 – Standard version

Thermocouple (TC) temperature assembly OPTITEMP TCA-T30 – Standard version

The OPTITEMP TCA-T30 is a weld-in thermocouple (TC) assembly with a tapered barstock thermowell (based on form 4). The temperature assembly for advanced requirements is suitable for applications in pipes, tanks or reactors where flange or thread connections are no longer sufficient (e.g. in steam distribution systems). Its barstock thermowell also features a much higher mechanical stress resistance than welded multipart thermowells, making it particularly useful in applications with higher flow velocities and pressures. The TC is designed for temperature measurement of solids, liquids, gases and steam up to +600°C / +1100°F.

The OPTITEMP TCA-T30 features a modular design with a threaded standard neck tube that can be exchanged easily, even under operating conditions. This makes the temperature assembly very flexible. If it has been damaged from the outside, servicing can be carried out without process shut down. The thermocouple assembly can be combined with most thermowells. It is available with ATEX and IECEx approvals.

Product highlights

  • Temperature measurement of solids, liquids, gases and steam
  • Modular design: threaded standard neck tube for easy exchange under operating conditions
  • Thermowell material: 1.4404 / 316L, 1.4571 / 316Ti, 1.7335 / 13CrMo44, 1.0460 / C22.8
  • Standard or customised lengths
  • Different connection heads available (IP54…IP68)
  • With optional temperature transmitter
  • Available as intrinsically safe (Ex i) and flameproof (Ex d): ATEX, IECEx

Typical applications

  • Applications with advanced requirements
  • Temperature measurement of media requiring high mechanical stress resistance
  • Also suitable for temperature measurement in cooling lines, requiring tightness and safety of the process connection
  • Suitable for applications where assemblies complying with DIN standards are required
  • Primarily used in power generation and for temperature measurement in auxiliary and supply circuits in various industries such as:
    • Chemical and petrochemical
    • Oil and gas
    • Machinery and apparatus / OEM
    • Iron and steel
    • Pulp and paper

Technical data

Measurement principlesThermocouple (TC)
Measured mediaGases, Liquids, Solids, Steam
Measuring pointPipe
Temperature sensor connection type optionCeramic terminal block, Flying wires, Temperature transmitter
Measuring insert replaceableYes
Sensor mountingWeld-in
Thermowell diametersØ24 mm / 0.94"
Assembly with thermowellYes
Measuring insert typeReplaceable spring loaded mineral isolated measuring insert OPTITEMP TC 100
Thermowell tip designTapered
Thermowell typeBarstock
Thermowell form (according to DIN 43772)Form 4
Wetted partsNon-alloy carbon steel (1.0460/AISI 1022M), Austenitic stainless steel (1.4404/316L), Austenitic stainless steel (1.4571/316Ti), Alloy carbon steel (1.7335/AISI A182)


Certificates/Approvals ExATEX, IECEx

Process connections

Weld-in connectionsDiameter: 24 mm / 0.95"
Fitting: 48x50 mm / 1.89x1.97"