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VA520 Inline flow sesnor
Germany- CS instruments
Description：
As the fluid passes over a heated sensor element, it removes heat and causes a change in temperature. By measuring this temperature change or the amount of energy required to maintain a constant temperature of the heating element, the flow rate of the fluid can be accurately determined.
The VA520 is designed for fixed installation, available in threaded and flange-mounted versions. Both installation types require system shutdown and pipe cutting during setup.
The VA520 Thermal Mass Flow Meter can be installed at distribution stations, within different departments or individual laboratory buildings, to accurately measure gas consumption for each user — simplifying usage calculation and cost allocation.
It can also be used to monitor gas consumption of individual machines, helping to analyze equipment efficiency, gas usage, and potential pipeline leakage.
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Gas Measured
- Compressed air (from air compressors)
- Nitrogen (N₂)
- Natural gas flow
- Liquefied petroleum gas (LPG) flow
- Carbon dioxide (CO₂)
- Argon (Ar)
- Biogas
- Vacuum
Advantage
- Insertion design: Enables quick on-site installation, removal, and maintenance without interrupting the pipeline system.
- Direct mass flow measurement: Measures mass flow directly, requiring no temperature or pressure compensation.
- High accuracy: Provides excellent measurement precision, especially in low flow ranges.
- Wide applicability: Suitable for various gases and liquids, and capable of measuring very low flow rates.
- No moving parts: Designed with no mechanical moving components, making it wear-resistant and low-maintenance.
Technical data
- 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 resistance: Up to 50 bar
- Temperature range:
Sensor: -30…+110 °C
Built-in pressure sensor model: -20…+85 °C
Housing: -20…+70 °C - Protection rating: IP65
- Probe material: Stainless steel (1.4301)
- Insertion lengths: 220 mm, 300 mm, 400 mm; Ø10 mm
- Installation range: Suitable for pipe diameters from ½" to 40"
- Optional features:
Bidirectional flow measurement and totalizer
Integrated pressure measurement function (data accessible via communication interface)
