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Picture of ultrasonic flowmeter Proline Prosonic Flow 91W for water and wastewater applications

Prosonic Flow Clamp-On 91W

91W
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  • Measuring principle

    Ultrasonic flow

  • Product headline

    Device with automatic frequency scan for maximum measuring performance and cost-effective transmitter.
    Clamp-on flow measurement of process water, salt water, demineralized water, drinking & wastewater.

  • Sensor features

    Low capital investment – cost-effectiveness increases with pipe diameter (up to DN 2000/80"). Long-term stable signal – maintenance-free permanent mounting from outside with coupling pads. Process transparency – diagnostic capability.
    Medium temperature: –20 to +80 °C (-4 to +176 °F). Degree of protection IP68 (Type 6P enclosure) for pipes under water. Shock and vibration resistance according to IEC 68-2-6.

  • Transmitter features

    Economical transmitter – designed for easy applications. Fast and reliable commissioning – Quick Setup menu for installation. Automatic recovery of data for servicing.
    Aluminium field transmitter housing. 2-line display with push buttons. HART.

  • Nominal diameter range

    Single channel, 1 or 2 paths : DN15 to 2000 (1/2 to 80")

  • Wetted materials

    Clamp on system:
    Sensor holder 1.4308/CF-8
    Sensor housing 1.4301/304
    Strapping bands 1.4301/304

  • Measured variables

    Volume flow, sound velocity, flow velocity, signal strength, totalizer

  • Max. measurement error

    Volume flow:
    ±3% o.r. for DN15
    ±2% o.r. for DN25 to 200
    ±2% o.r. above DN200

  • Measuring range

    0.3 to 10 m/s (1 to 33 ft/s)

  • Max. process pressure

    N/A

  • Medium temperature range

    -20 to +80°C (-4 to +176 °F)
    0 to +130°C (32 to +265 °F) option

  • Ambient temperature range

    -20 to +60 °C (-4 to +140 °F)

  • Sensor housing material

    N/A

  • Transmitter housing material

    AlSi10Mg, coated

  • Degree of protection

    IP67, type 4X for transmitter
    IP67 type 4X for sensors
    IP68 type 6P for sensors (option). IP67 NEMA 4X

  • Display/Operation

    2 lines backlit display with 3 push button

  • Outputs

    1x 4-20 mA HART (active)
    1x Pulse/frequency/switch output (passive)

  • Inputs

    N/A

  • Digital communication

    HART

  • Power supply

    AC 85 to 250 V
    20 to 28 V
    DC 11 to 40 V

  • Hazardous area approvals

    Non hazardous area
    FM, CSA

  • Other approvals and certificates

    Flowmeter verification for DN15, 25, 40, 50 & 100 only
    EAC marking

  • Product safety

    CE, C-Tick, EAC marking

  • Metrological approvals and certificates

    Flowmeter verification for DN15, 25, 40, 50 & 100 only

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