VA 521 – Compact in-line flow sensor for compressed air and other gases

Reduce your energy costs and improve your sustainability with the VA 521. Monitor the energy consumption of individual machines and analyse your leakage currents using just one measuring device.

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Details

  • Measurement of mass flow. Direct output of standarized volume flow is possible without the need for additional pressure and temperature measurements. 
  • Compact unit for installation in confined spaces; no inlet or outlet straightens required thanks to the integrated flow straightener 
  • Highly accurate at both low and high flows
  • Easy installation and removal of the sensor. The integrated measuring section can remain in the pipework whilst the sensor is being cleaned and is simply sealed with a cap.
  • No moving parts, therefore low-maintenance
  • Suitable for compressed air and non-corrosive gases such as nitrogen, oxygen, argon, helium and many more
  • 04…20 mA, pulse and a Modbus RTU (RS 485) interface as standard
  • Optional interfaces such as Modbus TCP (Ethernet), Power over Ethernet (PoE) and M-Bus 
  • Pressure range up to 40 bar 
  • Temperature range up to 80°C
  • Integrated display for showing measured values 
  • Available from ½” to 2”
  • Settings can be selected using the display keys 
  • The main counter reading can be reset via the display 
  • For velocities up to 224 Nm/s
  • Highly accurate, with an accuracy of ± 1.5% or ± 1% of the measured value – as well as ± 0.3% of the upper range value
VA 521

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