VA 420 with flange VA 420 with flange VA 420 with flanges series VA 420 stationary use VA 420 mobile use VA 420 with flange VA 420 with flange VA420 slot joint VA420 slot joint

VA 420 with integr. measuring section & flange

Article no: 0695 2

Intelligent solutions for accurate consumption measurement for compressed air and gases.

Application-technological features of the consumption counters VA 420:

  • Easy and affordable installation
  • Units freely selectable via keypad m³/h, m³/min, l/min, l/s, kg/h, kg/min, kg/s, cfm
  • Compressed air counter up to 1,999,999,999 m³. Resettable to "zero" via keypad
  • Analogue output 4...20 mA, pulse output (galvanically seperated)
  • High measuring accuracy also in the lower measuring range (ideal for leakage measurement)
  • Negligibly small loss pressure
  • Calorimetric measuring principle, no additional pressure and temperature measurement necessary, no mechanically moved parts
  • Gas types adjustable via software (nitrogen, oxygen, CO2, nitrous oxide, argon)

Application range of VA 420:

  • Compressed air balancing, compressed air consumption measurement
  • Leakage air / leak rate determination
  • Mobile compressed air measurement in front of single machines / plants
  • Flow measurement of process gases like e. g. nitrogen, CO2, oxygen, argon, nitrous oxide
  • Flow measurement at nitrogen generators

Note

We are always working on the improvement of our products!

For this reason our consumption counters VA 420 will have a slot joint in future.

Despite this change the shipment of measuring sections with pin connection will continuously be granted. So an unproblematic exchange of the measuring heads and the measuring sections will also be possible in future.

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    Parameters:

    m³/h, l/min (1000 mbar,
    20°C) in case of compressed
    air resp. Nm³/h,
    Nl/min (1013 mbar, 0°C
    in case of gases)

    Adjustable via
    keypad:

    m³/h, m³/min, l/min, l/s,
    ft/min, cfm, m/s,
    kg/h, kg/min

    Meas. principle:

    calorimetric measurement

    Sensor:

    2x silicium chip

    Meas. medium:

    air- gases

    Gas types adjustable
    via software:

    air, nitrogen, argon,
    nitrous oxide, CO2, oxygen

    Accuracy:

    ± 1.5% of m.v., ± 0.05% of f.s.
    On request: Special calibration
    via 5 point ISO calibration certificatet

    Operation temp.:

    -30...80°C

    Operating press.:

    up to 16 bar
    Optional up to PN 40

    Analogue output:

    4...20 mA for m³/h resp. l/min

    Pulse output:

    1 pulse per m³ resp. per
    liter galvanically seperated

    PC connection:

    SDI interface

    Power supply:

    24 VDC smoothed ± 15%

    Burden:

    < 500 Ohm

    Meas. section:

    stainless steel 1.4404

    Flanges:

    Weld neck flange according to DIN EN 1092-1
    Groove-faced and tongue-faced flange on request

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