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Barstock thermowell

Barstock thermowell ©Endress+Hauser

Made of drilled barstock material. Mainly used in heavy duty or general purpose applications.

Due to the challenging process conditions by heavy duty applications the load capacity of a thermowell must be calculated exactly. Dye penetration tests, ultrasound test, helium leakage test, pressure endurance test as well as various, non-destructive material tests prove the quality of materials and processing.

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  • Benefits

    • The extension, the immersion and the tapering lengths as well as the bar dimensions can be chosen according to process requirements

    • A wide choice of standard materials is available; other versions can be ordered according to specification

    • Different grades...

  • Field of application

    TA571 is designed for use with resistance and thermocouple thermometers mainly in heavy duty applications.

Features and specifications



  • Measuring principle

    Bar stock Thermowell

  • Characteristic / Application

    metric style

    weld-in process connections

    round extension

  • Head connection

    internal thread:

    1/2" NPT

    1/2" NPSM


  • Maximum standard immersion length

    1000 mm (39,37")

  • Max. immersion length on request

    5.000 mm (196,85")

  • Process connection

    to weld-in

  • Thermowell root diameter

    20 mm (0,79")

    25,4 mm (1")

  • Medium contact material

    1.4401 (316)

    1.4404 (316L)

    1.4571 (316Ti)

  • Wetted part finishing (Ra)

    < 0,8 μm (31,50 μin)

    < 1,6 μm (63,00 μin)

  • Tip shape



    conical tapered

  • Temperature range

    -200...700 °C (-328...1.292 °F)

  • Max. process pressure (static)

    500 bar (7252 psi)

  • Max. process pressure at 400 °C

    300 bar (4351 psi)

Documents / Manuals / Software

Accessories / Spare parts

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