High sensitivity at low velocities
Measurement from 2 m/s ensures reliable coverage of the full operating range of variable-speed compressors (VSD).
- Differential flow meter for wet compressed airDifferential-pressure-based flow meter for use directly downstream of compressors in wet compressed air, at media temperatures up to +180 °C.
- Integrated displayDelivered with integrated local display for flow, consumption, temperature, and pressure values.
- Standard output signalsRS 485 (Modbus RTU), 4–20 mA analog output, and pulse output for industrial integration.
- Installation via 1/2" ball valveEnables installation and removal under pressure without system shutdown, with precise insertion-depth adjustment.
| Parameter | VD 500 |
|---|---|
| Measuring range | 2 … 224 m/s (compressed air), optionally up to 600 m/s; 0.04 … 500 mbar differential pressure (gases) |
| Measured medium | Air, non-aggressive gases |
| Accuracy | ± 1.5% of measured value |
| Measuring principle | Differential pressure |
| Measuring span | 1 : 100 |
| Response time | t99 < 1 s |
| Medium temperature [°C] | –30 … +180 |
| Operating pressure [bar(g)] | –1 … +30 |
| Ambient temperature [°C] | –20 … +70 |
| Power supply | 18 … 36 V DC, 5 W |
| Output signals (standard) | RS-485 (Modbus RTU), 4–20 mA, pulse output |
