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VD520 Inline differential pressure flow sensor
Germany- CS instruments
Description：
The VD520 Differential Pressure Gas Flow Meter from CS Instruments calculates the volume flow of compressed air or gases based on the Pitot tube measurement principle, and is classified as a differential pressure flow meter.
The VD520 is equipped with built-in pressure and temperature sensors for compensation, allowing it to accurately calculate the true instantaneous volume flow.
Typical applications include air compressor outlet flow (FAD), exhaust gas monitoring, and more.
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Application
- Air compressor outlet / single machine efficiency flow measurement – undried (FAD)
- Clean compressed air system – dried (CDA)
- Exhaust gas and gases with larger particles
Advantage
- Pressure and temperature compensation: Can display actual volume flow (m³/h).
- Multi-parameter measurement: Simultaneously measures flow, totalized flow, temperature, and pressure.
- No heating element: Resistant to contamination, high temperatures, and particulates, making it ideal for industrial environments.
- Handles high flow rates and high-pressure gases: Measurement accuracy is not affected by changes in flow velocity.
- Applicable pipe sizes: Suitable for DN8 to DN80, available with flange and threaded connections.
Technical data
- Latest technology: Minimum detectable flow velocity of 2 m/s, covering all flow ranges of variable-speed air compressors.
- Accuracy: ±1.5% of measured value (m.v.)
- Power supply: 18…36 VDC, 5 W
- Communication interfaces: 4–20 mA, Pulse, Modbus RTU (RS485), Modbus TCP (Ethernet), PoE
- Pressure rating: Up to 30 bar
- Temperature range:
Sensor: -30…+180 °C
Housing: -20…+70 °C - Protection rating: IP65
- Probe material: Stainless steel 1.4301
- Threaded installation range: DN15–DN50
- Flange installation range: DN15–DN80
