Gas Flow Meter

The operation of the International Gas Turbine Meter is based on the measurement of the velocity of gas. The flowing gas is accelerated and conditioned by the meters straightening section. The straightening vanes prepare the gas flow profile by removing. undesired swirl, turbulence and asymmetry before the gas flows to the turbine wheel. The dynamic forces of the flowing fluid cause the rotor to rotate.
The turbine wheel is mounted on the main shaft, with special high precision, low friction ball bearings. The turbine wheel has helical blades that have a known angle relative to the gas flow. The conditioned and accelerated gas drives the turbine wheel with an angular velocity that is proportional with the gas velocity.

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    •  Technical Data
    Output Pulse
    (Depending on Converter Model)
    Pulse
    4~20mA
    Accuracy ±1.0%ofRate
    ±1.5% of Rate
    Operating Temperature -20…+60°C
    Fluid Temperature -20…+80°C
    Body Material Cast Aluminium SS 304
    SS 316
    Body Material Cast Aluminium Cast Steel
    (D4:DN50-DN200)
    Rotor Material Aluminum alloy
    Plastic ABS
    Bearing Material SS304
    •  Model Selection
    Model LWQ Description
    Diameter XXX DN20-DN400
    Converter Type N 24V DC; Pulse output; No display
    A 24V DC; 4-20 mA output; No display; Ex
    E1 Battery power supply; No output; Ex; Digital display
    E2 24V DC; 2-wire 4-20mA output; Ex; Digital display
    E3 24V DC; Pulse output; Local display; Ex; display
    E4 24V DC; 0-20mA output; Local display; EX;Digital display
    E5 24V DC; 3-wire 4-20mA / Pulse output; EX; Digital display
    FE Fluidwell E series converter
    FF Fluidwell F series converter
    D1 24V DC; 2-wire 4-20mA output; Digital display; Temperature & Pressure Compensation
    D2 24V DC; 3-wire 4-20mA output; Digital display; Temperature & Pressure Compensation
    D4 24V DC; 4-20mA output; Modbus RS485; Digital display; Temperature & Pressure Compensation
    Notice: 1)Modbus RS485 is optional for E2,E3,E4,E5,D1,D2,D4
    2)Battery Power(24V DC+Battery) is optional for E2,E3,E4,E5,D1,D2,D4
    3)D4 is only cast steel available
    Accuracy 10 ±1.0% of Rate
    15 ±1.5% of Rate
    Flow Range S Standard Range
    E Extended Range
    Body Material S4 SS304
    S6 SS316
    CA Cast Aluminum
    CS Cast Steel (Only for D4 Type)
    Rotor Material AB ABS Plastic
    AA Aluminum Alloy
    Explosion Proof BT Exd II BT6
    CT Exd II CT4
    NA No explosion proof
    Connection THM Male thread; Available from DN4 … DN50
    THF Female thread; Available from DN4 … DN50
    DXX D16: DIN PN16 flange; D25: DIN PN25…
    AXX A15: ANSI 150#    flange; A30: ANSI 300#…
    JXX J10: JIS 10K flange;    J20: JIS 20K…

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