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Product picture of Thermometer with RTD or TC insert TM121

iTHERM ModuLine TM121
Industrial modular thermometer

Fundamental metric RTD/TC thermometer with welded thermowell for a wide range of industrial applications

TM121
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5-year warranty

Engineered for Confidence

Our Fundamental Selection instruments feature an extended 5-year warranty – a clear testament of our trust in their long-term reliability and performance.

Should a warranty case occur, you can count on a fast replacement process and minimal administrative effort – giving you peace of mind when it matters most and helping you keep your operations running smoothly.

Warranty terms apply

The extended warranty is subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

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  • Measuring principle

    Resistance Temperature Detector

  • Characteristic / Application

    metric style
    modular temperature assembly
    universal range of application
    with neck
    incl. thermowell / protection tube (metal)

  • Thermowell / protection tube

    welded protection tube

  • Insert / probe

    Basis Sensortechnologie

  • Outer diameter protection tube / Insert

    Thermowell:
    9x1,25 mm
    11x2 mm

  • Max. immersion length on request

    up to 1.000,0 mm (39'')

  • Material protection tube/ thermowell

    316L (1.4404)

  • Process connection

    Thread:
    G1/2"
    NPT1/2"
    M20x1.5, M27x2, M33x2
    Compression fitting:
    NPT1/2", G1/2", G1"
    Flansche:
    DN25 DN40 B1
    ASME 1" 150 RF
    ASME 1" 300 RF
    ASME 1 1/2" 150 RF
    ASME 2" 150 RF
    ASME 2" 300 RF

  • Tip shape

    straight

  • Operating temperature range

    Basic PT100 TF:
    -50 °C …200 °C
    (-58 °F …392 °F)
    Typ K:
    max. 1.100 °C
    (max. 2.012 °F)

  • Max. process pressure (static)

    depending on the configuration

  • Accuracy

    Class A acc. to IEC 60751
    Class B acc. to IEC 60751
    Class standard acc. to ASTM E230
    Class 2 acc. to IEC 60584-2

  • Response time

    t90 around 100 s
    depending on configuration

  • Integration head transmitter

    yes (4 … 20 mA; HART)

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