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Thermal mass flowmeter - Proline t-mass B 150

Proline t-mass B 150
thermal mass flowmeter

The flowmeter for cost-effective measurement and easy monitoring of utility gases

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  • Measuring principle


  • Product headline

    The flowmeter for cost-effective measurement and easy monitoring of utility gases.
    Suitable for air, nitrogen, carbon dioxide and argon in circular piping or rectangular ducts.

  • Sensor features

    Optimal process monitoring – easy measurement even at low pressures and flow velocities. Cost‐effective measurement – easy installation, negligible pressure loss and maintenance‐free. Reliable flow trending – multivariable measurement.
    Insertion version for nominal diameter DN 80 to 1500 (3 to 60"). Installation and removal of sensor without process interruption. Easy installation.

  • Transmitter features

    Fast and efficient commissioning – guided operating menus. High plant availability – self‐diagnostics and error monitoring. Automatic recovery of data for servicing.
    Device in compact version with DC 24 V power supply. 4-20 mA HART, pulse/frequency/switch output. Compact and robust transmitter.

  • Nominal diameter range

    DN 80 to 1500 (3 to 60")

  • Wetted materials

    Transducer: 1.4404 (316L)
    Insertion tube: 1.4404 (316L); 1.4435 (316L)
    Compression fitting: 1.4404 (316L)
    Sealing ring: EPDM; HNBR; 1.4401 (316)
    Clamping ring: PEEK 450G

  • Measured variables

    Mass flow, temperature, corrected volume flow, FAD volume flow

  • Max. measurement error

    3 % o.r.
    4 % o.r.
    5 % o.f.s.
    (depending on chosen option of ordering feature "Calibration flow")

  • Measuring range

    20 to 720 000 kg/h (45 to 1 587 600 lb/h)
    20 to 1 080 000 kg/h (45 to 2 381 400 lb/h)
    (for air, depending on chosen option of ordering feature "Calibration flow")

  • Max. process pressure

    20 bar g (290 psi g)

  • Medium temperature range

    –40 to +100 °C (–40 to +212 °F)

  • Ambient temperature range

    –40 to +60 °C (–40 to +140 °F)

  • Transmitter housing material

    AlSi10Mg, coated

  • Degree of protection

    IP66/67, type 4X enclosure

  • Display/Operation

    4‐line display with push Buttons
    Configuration via local display and operating tools possible

  • Outputs

    4‐20 mA HART (active)
    Pulse/frequency/switch output (passive)

  • Inputs

    Status input

  • Digital communication


  • Power supply

    DC 18 to 30 V

  • Hazardous area approvals

    ATEX, IECEx, cCSAus

  • Metrological approvals and certificates

    Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025), NAMUR

  • Pressure approvals and certificates