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All Categories > Flow Differential Pressure > VD 550 Robust Flow Sensors for Wet Compressed Air and Gases > Item # 0690 5501  
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Item # 0690 5501, VD 550 Robust Flow Sensor for Wet Compressed Air and Gases

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The integrated, precise differential pressure sensor measures the differential pressure/dynamic pressure at the sensor tip. The pressure depends on the respective gas velocity. The flow is therefore easy to determine by means of the pipe diameter.

The additional measurement of temperature and absolute pressure and calculation of the relevant density means that measuring can be carried out for various gases, a wide variety of temperatures and pressures.





Financing  · Specifications  · Benefits  · Field of Application  · Typical Applications

Financing

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Specifications

Measuring Range (Compressed Air)

2 to 224 m/s
600
m/s

Differential Pressure for Gases

0.04 to 500 mbar

Measured Medium

Air
Gas

Accuracy

± 1.5% of Measured Value (M.V.)

Measuring Principle

Differential Pressure

Measuring Span

1:100
300

Response Time

t 99 <1 sec

Temperature of The Medium

-22 to 356 ºF

Operating Pressure

-1 to +100 barg

Ambient Temperature

-4 to +158 ºF

Protection Class

Ingress Protection (IP 67)

Direct Current (DC) Voltage

18 to 36 V

Power

5 W

Outputs

1x 4 to 20 mA analogue output (electrically not isolated), pulse output, RS 485 (Modbus-RTU)

Optional Output

2 x 4 to 20 mA active, Ethernet interface (PoE), M-Bus


Benefits
Benefits at a glance:
  • Unique sensitivity in the lower measuring range: Measures from as little as 2 m/s and thus covers the complete operating range of variable speed drive (VSD) compressors
  • Particularly suitable for extremely high flow rates
  • Flow, total consumption, temperature and pressure
  • Measurement at high temperatures, max. temperature 356 ºF
  • Can be used in pipes from DN 20 to DN 600
  • Installation via 1/2" ball valve under pressure
  • Robust impact-proof aluminum die cast housing for outdoor area IP 67




Field of Application
  • Wet air
  • Technical gas
  • Mixed gases: e.g. natural gas/H2
  • LPG
  • Propane
  • CO2




Typical Applications
  • Measurement of the capacity of compressors
  • Compressed air audits
  • Efficiency measurement of compressed air systems




 DOWNLOADS 

Datasheet for VD 550 Robust Flow Sensors for Wet Compressed Air and Gases
(PDF, 436KB)


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