CS Instruments VA 409 Flow Direction Switch

CS Instruments VA 409 Flow Direction Switch 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