Flow Meters

Contrary to the previously used bridge circuit, the newly developed evaluation electronics of the VA500 flow sensor records all measured values digitally. This leads to better accuracy in large measuring spans of 1:1000.

Features;

• RS 485 interface, Modbus-RTU as a standard
• Option integrated display for m³/h and m³
• Usable from 1/2“ to 12“ (DN 300)
• Easy installation under pressure
• 4...20 mA analogue output for m³/h resp. m³/min
• Pulse output for m³
• Inner diameter adjustable via keypad
• Consumption counter resettable
• Adjustable values at the display of the flow sensor: Reference conditions, °C and mbar, 4...20 mA scaling, pulse weight

This affordable mass flow meter for compressed air and gases works according to the approved calorimetric measuring principle. An additonal pressure and temperature compenstation is not necessary. Contrary to the previously used bridge circuit the newly developed evaluation electronics records all measured values digitally. This enables very precise and fast measurements.

Due to the new evaluation electronics, all VA 520 models have an integrated Modbus output as a standard so all parameters can be easily transferred via Modbus.

Due to its compact design it is possible to monitor all compressed air systems from the compressor to the smallest compressed air tool (1/4“ to 2 inch) with the new mass flow sensor VA 520. VA 500 flow sensors are available for larger pipe diameters from DN 50 to DN 300. Apart from compressed air, other gases like e.g. nitrogen, oxygen and CO2 can be measured.