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CS Instruments VA 409 – Flow Direction Switch For Compressed Air Systems

The new thermal flow direction switch VA 409 with direction indication serves for determination of the flow direction of compressed air and gases especially in closed circular pipelines.

The new thermal flow direction switch VA 409 with direction indication serves for determination of the flow direction of compressed air and gases especially in closed circular pipelines.

By means of VA 409 with flow direction indication the flow direction of the compressed air can be determined quickly and safely. Compared with the former mechanical paddle flow switches VA 409 is able to detect even the smallest changes in the flow direction quickly and without any mechanical movement.

The direction information in form of a potential-free contact (normally closed max. 60 VDC, 0.5 A) is transferred to the consumption sensors VA 500/ VA 520 or to a separate building management system (mbs). Two LEDs show the flow direction.

In connection with 2 consumption sensors VA 500/ VA 520 incoming and outflowing compressed air in closed circular pipelines can be measured precisely.

Features

  • Detects smallest changes <0.1 m/s referred to 20°C and 1000 mbar
  • No mechanical wear parts
  • Easy installation under pressure

Applications

  • Underwater Noise Protection / Bubble Curtain
  • Efficiency-FAD analysis for compressors
  • Flow meters for professionals – optionally with ATEX approval
  • Flow meters for oxidizing gases
  • Consumption sensors and flow meters for inert gases
  • Flow meters for toxic and corrosive gases
  • Consumption meter for oxygen, hydrogen, carbon dioxide
  • Consumption meter for nitrogen in tire vulcanization
  • Consumption meter for gas measurement in the aerospace industry
  • Flow and consumption meter for gas measurement in the automotive industry
  • Consumption meter for gas measurement in metal processing
  • Consumption sensor for flow measurement of oxygen
  • Consumption meter for argon and nitrogen in chemistry
  • Nitrogen consumption measurement in the food industry
  • Inline consumption meter for nitrogen generators
  • Flow measurement in gas mixtures as source gas
  • Food gas measurement
  • Measurement of the flow rate in a compressed air production line in the cosmetics sector

Specifications

  • Response area detection of direction:
    < 0.1 m/s relative to 20 °C
    and 1000 mbar
  • Measuring principle: Calorimetric
    measurement
  • Sensor: Pt 30/ Pt 700/ Pt 330
  • Measured medium: Air, gases
  • Operating temperature:
    0…50 °C sensor tube
    -20…70 °C housing
  • Operating pressure: up to 16 bar
  • Power supply: 24 VDC, 40 mA
  • Current consumption: Max. 80 mA to 24 VDC
  • Protection class: IP 54
  • EMC: in acc. with DIN EN 61326
  • Connection: 2 x M12, 5-pin, plug A and
    plug B
  • 2 potential-free contacts:
    2 x U max. 60 VDC, l max
    0.5 A (normally closed); on
    request: Normally open
  • Housing: Polycarbonate
  • Sensor tube: Stainless steel, 1.4301,
    length 160 mm, Ø 10 mm,
    safety ring Ø 11.5 mm,
    longer sensors on request
  • Mounting thread: G 1/2″
  • Housing diameter: 65 mm
  • Direction indication: 2 LED`S

Downloads

Datasheet: CS Instruments VA 409 – Flow Direction Switch For Compressed Air Systems

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