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Proline t-mass F 300 – Inline version with flange connection

Proline t-mass F 300
thermal mass flowmeter

Inline flowmeter with long-term stability and a compact, easily accessible transmitter

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  • Measuring principle


  • Product headline

    Inline flowmeter with long-term stability and a compact, easily accessible transmitter.
    Flexible, convenient programming based on 21 standard gases or freely definable gas mixtures thereof.
    Measurement of utility and process gases as well as gas mixtures in small line sizes.

  • Sensor features

    High level of process control – premium measurement accuracy and repeatability. Reliable monitoring – detection of process disturbances and reverse flow. Easy maintenance – removable sensor.
    Inline version with DN 15 to 100 (½ to 4"). Bidirectional measurement; high measuring performance. Patented drift-free sensor with SIL 2.

  • Transmitter features

    Full access to process and diagnostic information – numerous, freely combinable I/Os and fieldbuses. Reduced complexity and variety – freely configurable I/O functionality. Integrated verification – Heartbeat Technology.
    Compact dual-compartment housing with up to 3 I/Os. Backlit display with touch control and WLAN access. Remote display available.

  • Nominal diameter range

    DN 15 to DN 100 (1/2" to 4")

  • Wetted materials

    Measuring tubes
    DN 15 to 50 (½ to 2"): stainless cast steel, CF3M/1.4408
    DN 65 to 100 (2½ to 4"): stainless steel, 1.4404 (316/316L)
    Process connections
    Flange connections
    Stainless steel, 1.4404 (F316/F316L)
    Threaded connections
    Stainless steel, 1.4404 (316/316L)
    Sensing element
    Stainless steel, 1.4404 (316/316L)
    Alloy C22, 2.4602 (UNS N06022);
    Stainless steel, 1.4404 (316/316L)
    Reverse flow detection
    Stainless steel, 1.4404 (316/316L)

  • Measured variables

    Massflow, temperature, standard volume flow, volume flow, Free air delivery, velocity, heat flow, energy flow, density

  • Max. measurement error

    Gas: 1.0% o.r. (10 to 100% o.f.s.), 0.1% o.f.s. (1 to 10% o.f.s.)

  • Measuring range

    0.5 to 3750 kg/h (1.1 to 8250 lb/h)

  • Max. process pressure

    PN40 / Cl. 300 / 20K

  • Medium temperature range

    -40 °C to +180°C (-40 °F to +356 °F)

  • Ambient temperature range

    -40 to 60°C (-40 to 140°F)
    Transmitter: -50 to 60°C (-50 to 140°F),
    Sensor: -60 to 60°C (-60 to 140°F)

  • Transmitter housing material

    Aluminium, AlSi10Mg, coated

  • Degree of protection

    IP66/67, Type 4X enclosure

  • Display/Operation

    4-line backlit display with touch control (operation from outside)
    Configuration via local display and operating tools possible
    Remote display available

  • Outputs

    3 outputs:
    4-20 mA HART (active/passive)
    4-20 mA (active/passive)
    Pulse/frequency/switch output (active/passive)
    Relay output

  • Inputs

    Status input
    4-20 mA input

  • Digital communication

    HART, Modbus RS485

  • Power supply

    DC 24V
    AC 100 to 240V

  • Hazardous area approvals


  • Product safety

    CE, C-tick

  • Functional safety

    Functional safety according to IEC 61508, applicable in safety-relevant applications in accordance with IEC 61511

  • Metrological approvals and certificates

    Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025)
    Heartbeat Technology complies with the requirements for measurement traceability according to ISO 9001:2015 – Section a

  • Pressure approvals and certificates

    PED, CRN

  • Material certificates

    3.1 material
    NACE MR0175/MR0103