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Modular thermometer with RTD or TC insert

Product picture of modular thermometer MLTTS01 ©Endress+Hauser

Designed for use in the Oil & Gas industry, with flanged process connection and an extension neck

The modular and robust thermometer finds its use especially in the Oil & Gas industry. Harsh environments, corrosive substances and high pressures can be handled by the use of robust thermowells and special materials. An optional head transmitter, with all common communication protocols, makes the device ready to use with enhanced measurement accuracy and reliability compared to directly wired sensors. The thermometer can be ordered either with resistance (RTD) or with thermocouple (TC) insert.

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  • Benefits

    • High degree of flexibility thanks to modular design with standard terminal heads as per DIN EN 50446 and customer-specific immersion lengths

    • High degree of insert compatibility and design as per DIN 43772

    • Extension neck to protect the head transmitter...

  • Field of application

    Designed for use in the Oil & Gas industry with universal range of application

    • Measuring range: Resistance insert (RTD): –50 to +500 °C (–58 to +932 °F), thermocouple (TC): –40 to +1 100 °C (–40 to +2 012 °F)

    • Pressure range up to 63 bar (914 psi)

    • Degree...

Features and specifications



  • Measuring principle

    Resistance Temperature Detector

  • Characteristic / Application

    metric style

    modular temperature assembly

    universal range of application

    suitable for hazardous areas

    suitable for high process pressures

    flanged process connection

    incl. protection tube

    with neck

    usable with insert StrongSens

  • Thermowell / protection tube

    incl. protection tube

  • Insert / probe

    mineral insulated (MI), flexible

  • Outer diameter protection tube / Insert

    16mm (0,71")

  • Max. immersion length on request

    Not defined

  • Material protection tube/ thermowell


  • Process connection

    Flange DN25 PN40 B1 EN1092-1

    Flange DN25 PN63 B2 EN1092-1

  • Tip shape

    Reduced 12x7x50

  • Operating temperature range

    PT100: -50…500°C

    TC up to 600°C

  • Max. process pressure (static)

    depending on configuration

  • Accuracy

    RTD Class A acc. to IEC 60751

    TC class 1 acc. To EN 60584

  • Response time

    depending on configuration

  • Integration head transmitter


  • Ex - approvals

    ATEX Ex ia

  • Certification

    Not defined

Documents / Manuals / Software

Accessories / Spare parts

Order code
    • Order code 71367427

      Spare parts kit ring D21/di 10xgreen,10p

      Packing unit: 10 pieces

    • Order code 71389488

      Extension cable TC IEC 2x type K, 3 pcs.

      L=180mm, 3 pieces

    • Order code TPC100-

      Insert TPC100

      Replaceable insert (MgO)

    • Order code TS111-

      Insert iTHERM TS111

      Replaceable. Metric version according DIN43735.

    • Order code MLTWS01-

      Thermowell MLTWS01

      Flanged protection tube

    • Order code TMT182-

      iTEMP TMT182, Head Transmitter HART

      Temperature transmitter, Protocol HART. Application: RTD, TC, Ohm, mV. 2-wire 4-20mA, galvanicisolation. Fault reaction: NAMUR NE 43. Mounting: head form B, DIN EN50446. UL listed.

    • Order code TMT82-

      iTEMP TMT82, Transmitter HART

      2-wire temperature transmitter. Dual universal sensor input. Galvanic isolation 2kV (input/output). Application: RTD, TC, Ohm and mV. ::Highly reliable due to drift detection and sensor back up. ::Optional also for safety critical applications by means of SIL 2/3 acc. to IEC61508.

    • Order code TMT84-

      iTEMP TMT84, Transmitter PA

      Dual sensor input. Advanced diagnostics:sensor monitoring. PROFIBUS PA Profile 3.02. Galvanic isolation 2kV. Application: RTD, TC, Ohm, mV. Current consumption: 11 mA. Mounting: head form B, DIN EN50446. Factory setup: CH1: Pt100, 3-wire, oC. CH2: inactive. Differing configuration optional selectable.

    • Order code TMT85-

      iTEMP TMT85, Transmitter FF

      Dual sensor input. Advanced diagnostics: sensor monitoring. FOUNDATION Fieldbus protocol Galvanic isolation 2 kV. Application: RTC, TC, Ohm, mV. Current consumption: 11 mA. Mounting: head form B, DIN EN50446. Factory setup: CH1: Pt100, 3-wire, oC. CH2: inactive. Differing configuration optional selectable.