For Compressed Air & Gases
VA 500 is the new premier insertion flow meter for compressed air and industrial gas flow measurements from 1/2” to 12” pipe. The flow sensor is based on Thermal Mass (Calorimetric) measuring principle, no additional pressure and temperature measurement necessary. The newly developed evaluation electronics records all measured values digitally. This leads to a better accuracy also in case of large measuring spans of 1:1000.
The flow sensor is available in 4 measuring ranges – “Standard (92.7 m/s), Low (50 m/s), Max. (185 m/s) and High-Speed (224 m/s) version”. The unit can be ordered with and without integrated display. The version with display shows the real time volumetric flow, velocity, temperature and total consumption. The tube diameters and the consumption counter can be reset via keypad.
| Measuring range | 50 m/s, low-speed version 92.7 m/s, standard version 185 m/s, max. version 224 m/s, high-speed version |
| Measuring principal | Thermal mass flow sensor |
| Measuring parameters | Flow, consumption, flow speed and temperature |
| Accuracy class (m.v. = of measured value) (f.s. = of full scale) | ± 1.5 % of m.v. ± 0.3 % of f.s. ± 1.0 % of m.v. ± 0.3 % of f.s. (On request) |
| Measuring unit | m3/h, m3/min, l/min, Nm3/h, Nm3/min, Nl/min, cfm, kg/h, kg/min, etc… |
| Display | 1.8” TFT colour display (220 x 176) |
| Measured medium | Air and non-corrosive gases (nitrogen, argon, helium, CO2, oxygen) |
| Operating temperature | -30...110 °C sensor tube -30...80 °C housing |
| Operating pressure | -1...50 bar (for pressure >10 bar - order additional high-pressure protection) |
| Digital output | Digital - RS 485 interface, (Modbus-RTU) /. Ethernet interface PoE, M-Bus (Optional) |
| Analogue output | 4...20 mA for m3/h or l/min |
| Pulse output | 1 pulse per m3 or per litre |
| Wiring connection | M12 x 2, 5 pores, (M12 connector x2 is included) |
| Power supply | 18...36 VDC, 5 W |
| Burden | < 500 Ω |
| Materials | Housing - Polycarbonate Sensor probe - Stainless steel 304 (1.4301) |
| Protection class | IP65 |
| Mounting thread | G 1/2" ISO 228, NPT 1/2" |
Flow Measuring Ranges VA 500 for Compressed Air (ISO 1217:1000 mbar, 20 °C) | |||||
Inner diameter of pipe | Standard (92.7 m/s) | Max. (185.0 m/s) | High-Speed (224.0 m/s) | ||
Inch | mm | DN | m3/h | m3/h | m3/h |
1/2" | 16.1 | DN 15 | 2.5...760 (l/min) | 3.5...1516 (l/min) | 6.0...1836 (l/min) |
3/4“ | 21.7 | DN 20 | 0.3...89 | 0.4...178 | 0.7...215 |
1“ | 27.3 | DN 25 | 0.5...148 | 0.6...295 | 1.1...357 |
1 1/4“ | 36.0 | DN 32 | 0.9...280 | 1.2...531 | 2.5...644 |
1 1/2“ | 41.9 | DN 40 | 1.2...366 | 1.5...732 | 3.0...886 |
2“ | 53.1 | DN 50 | 2...600 | 2.5...1198 | 4.6...1450 |
2 1/2“ | 71.1 | DN 65 | 3.5...1096 | 5...2187 | 7...2648 |
3“ | 84.9 | DN 80 | 5...1570 | 7...3133 | 12...3794 |
4“ | 110.0 | DN 100 | 9...2645 | 12...5279 | 16...6391 |
5“ | 133.7 | DN 125 | 13...3912 | 18...7808 | 24...9453 |
6“ | 159.3 | DN 150 | 18...5560 | 25...11097 | 43...13436 |
8“ | 200.0 | DN 200 | 26...8786 | 33...17533 | 50...21230 |
10“ | 250.0 | DN 250 | 40...13744 | 52...27429 | 80...33211 |
12“ | 300.0 | DN 300 | 60...19815 | 80...39544 | 100...47881 |
