VA 520 – Thermal Mass Flow Meter for Flow Measurement

With the VA 520, you can document and cut down on your energy costs while boosting sustainability. This device enables you to keep track of your consumption and analyze leakages by having a permanent flow meter installed at distribution stations, individual departments, or for the purpose of billing individual consumers.

TECHNICAL DATA VA 520

Parameters:	m³/h, l/min (1000 mbar, 20 °C) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0 °C) in case of gases
Units adjustable via keys at display:	m³/h, m³/min, l/min, l/s, ft/min, cfm, m/s, kg/h, kg/min, g/s, lb/min, lb/h
Sensor:	Thermal mass flow sensor
Measured medium:	Air, gases
Gas types are adjustable over CS service software or CS data logger:	Air, nitrogen, argon, helium, CO2, oxygen
Measuring range:	See table
Accuracy: (o. M. V. = of measured value) (o. F. S. = of full scale)	± 1.5% of m.v. ± 0.3 % of f.s. on request: ± 1% of m.v. ± 0.3% of f.s.
Operating temperature:	-30…80 °C -20…80 °C with pressure sensor
Operating pressure:	-1 to 16 bar optionally up to PN 40
Digital output:	RS 485 interface, (Modbus-RTU), optional: Ethernet interface PoE, M-Bus
Analogue output:	4…20 mA for m³/h or l/min
Pulse output:	1 pulse per m³ or per litre electrically isolated. Pulse weight can be set on the display. Alternatively, the pulse output can be used as an alarm relay
Supply:	18…36 VDC, 5 W
Burden:	< 500 Ω
Housing:	Polycarbonate (IP 65)
Measuring section:	Stainless steel, 1.4404 or 1.4301
Mounting position:	any