Embedded differential pressure flow sensor — VD 520
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Спецификация VD 520
Available on request
Delivery across Russia
Order phone: +7(800)777-18-50
Description
The built-in precise differential pressure sensor measures the pressure difference/dynamic pressure at the measuring tip. The pressure depends on the corresponding gas velocity. Thus, the flow rate can be easily calculated based on the known pipe diameter.
Thanks to additional measurement of temperature and absolute pressure, as well as the calculation of the corresponding density, the device can perform measurements for various gases over a wide range of temperatures and pressures.
Advantages
- Ready-to-use compact flow meter to minimize installation efforts – built-in pressure and temperature compensation.
- Provides data on flow rate, total consumption, temperature, and pressure.
- Differential pressure sensor with unique sensitivity, accurately measures at speeds < 2 m/s.
- Wide flow range with extended measurement range due to the use of measuring sections with reduced internal diameter.
- Shorter inlet sections required thanks to the use of an averaging Pitot tube.
- Robust design, no moving parts.
- The control unit can be removed for calibration.
- Specifications
- Overall dimensions drawing
- Applications
| Specifications | |
| Measurement range | 2–224 nm/s / 600 nm/s (compressed air) 0.04 to 500 mbar differential pressure for gas |
| Measurement medium | Air and gases |
| Accuracy | ± 1.5 % of measured value |
| Measurement principle | Differential pressure |
| Measurement limit | 1:100 / 300 |
| Response time | t 99: < 1 s |
| Medium temperature | -30°...+80° C |
| Operating pressure | 1...30 bar |
| Ambient temperature | -20 °…+70 °C |
| Power supply | 18…36 (V) DC, 5 W |
| Output signals | Standard: RS 485 (Modbus-RTU), 4...20 mA pulse output. Optional: Ethernet (PoE), M-Bus |
VD 520 - with threaded connection
VD 520 - with flanged connection
VD 520 - flanged connection with narrowing
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