Technical Information
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VA500
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Parameters: |
m3/h, I/min (1000 mbar, 20° c) in case of compressed air resp. Nm3/h, NI/min (1013 mbar, 0°C) in case of gases |
Units adjustable via keys at display: |
m3/h, m3/min, I/min, I/s, ft/min, cfm, m/s, kg/h, kg/min |
Adjustable via keypad: |
Diameter for volume flow calculation, counter resettable |
Meas. principle: |
Calorimetric measurement |
Sensor: |
Thermal mass flow sensor |
Meas. medium: |
Air, gases |
Gas types adjustable via external device DS 400, DS 500, PI5OO |
Air, nitrogen, argon, nitrous oxide, CO2, oxygen |
Accuracy: (m.v.: of meas. value) (f.s.: of full scale) |
± 1.5 % of m.v. ± 0.3 % of f.s. on request ± 1.0 % of m.v. ± 0.3 % of f.s. |
Operating temp.: |
-30 ... 110 °C probe tube -30 ... 80 ° C housing |
Operating pressure: |
up to 50 bar |
Digital output: |
RS 458 interface, Modbus RTU, M-Bus (optionally) |
Analogue output: |
4 ... 20 mA for m3/h resp.I/min; on request: scaling for cfm,m3/min, I/min, I/s, ft/min, m/s |
Pulse output: |
1 pulse per m3 resp. per liter galvanically separated |
Power supply: |
18. ..3 6 voe, 5 w |
Burden: |
< 500 Ω |
Housing: |
polycarbonate |
Probe tube: |
stainless steel, 1.4301 mounting length 220 mm, Ø10 mm |
Mounting thread: |
G 1/2" |
DS400
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Dimensions: |
118x 115 x98mm IP 54 (wall housing) 92 x 92 x 75 mm (panel mounting) |
Inputs: |
2 digital inputs for VA 500/520 |
Interface: |
USB |
Power supply: |
100 ... 240 VAC, 50-60 Hz |
Accuracy: |
please see VA 500 |
Alarm outputs: |
2 relays, (pot.-free) |
Options: |
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Data logger: |
100 million measuring values start/stop time, measuring rate freely adjustable |
2 additional sensor inputs: |
for connection of pressure sensors, temperature sensors, clamp-on ammeters, third-party sensors with 4 ... 20 mA 0 to 10 V, Pt 100, Pt 1000 |