CS Instruments VA 420 Flow Sensor

CS Instruments VA 420 Flow Sensor integrated measuring section. Available with and without flange. The affordable flow meters VA 420 work according to the approved calorimetric measuring principle. 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 affordable flow meter VA 420.

Features

Easy and affordable installation
Units freely selectable via keypad m³/h, m³/min, l/min, l/s, kg/h, kg/min, kg/s, cfm
Compressed air counter up to 1,999,999,999 m³, Resetable to “zero” via keypad
Analogue output 4…20 mA, pulse output (galvanically separated)
High measuring accuracy also in the lower measuring range (ideal for leakage measurement)
Negligibly small loss of pressure
Calorimetric measuring principle, no additional pressure and temperature measurement necessary, no mechanically moved parts
Gas types adjustable via software (nitrogen, oxygen, CO2, nitrous oxide, argon)

Applications

Compressed air balancing, compressed air consumption measurement
Leckage air / leak rate determination
Mobile compressed air measurement in front of single machines/plants
Flow measurement of process gases like e.g. nitrogen, CO2, oxygen, argon, nitrous oxide
Flow measurement at nitrogen generators

Specifications

Parameters: m³/h, l/min (1000
mbar, 20°C) in case
of compressed air
resp. Nm³/h, Nl/min
(1013 mbar, 0°C) in
case of gases
Adjustable via
keypad:
m³/h, m³/min, l/min,
l/s, ft/min, cfm, m/s,
kg/h, kg/min
Meas. principle: calorimetric measurement
Sensor: 2 x silicium chip
Meas. medium: air, gases
Gas types
adjustable via
software:
air, nitrogen, argon,
nitrous oxide, CO2,
oxygen
Meas. range: see table at the left
Accuracy: ± 1.5% of m.v., ±
0.05% of f.s. On
request: Special calibration via 5 point ISO
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Operating temp.: -30…80 °C
Operating press.: up to 16 bar
Optional up to PN 40
Analogue output: 4…20 mA for m³/h
resp. l/min
Pulse output: 1 pulse per m³ resp.
per liter galvanically
separated
PC connection: SDI interface
Power supply: 24 VDC smoothed ±
15 %
Burden: ȍ
Housing: polycarbonate
Meas. section: stainless steel,
1.4301 or 1.4404
Mounting thread
meas. section:
R 1/4“, R 1/2“,
R 3/4“, R 1“, R 1 1/4“,
R 1 1/2“, R 2“
external thread