CS Instruments – VA 525

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Thermal mass compact flow meter for compressed air and nitrogen, designed for easy integration into energy monitoring systems.

Measuring principle Thermal mass flow
Measured medium Compressed air, nitrogen (N₂)
Measuring range up to 185 m/s (optional up to 224 m/s)
Nominal pressure up to 16 bar
Pipe sizes G 1/4" to G 2"
Outputs 4–20 mA, pulse, Modbus RTU, Ethernet, PoE, M-Bus
Measuring principle Thermal mass flow
Measured medium Compressed air, nitrogen (N₂)
Measuring range up to 185 m/s (optional up to 224 m/s)
Nominal pressure up to 16 bar
Pipe sizes G 1/4" to G 2"
Outputs 4–20 mA, pulse, Modbus RTU, Ethernet, PoE, M-Bus
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Standard equipment 1 · Options 3 · Accessories 3
  • VA 525 compact inline flow meterThermal mass compact flow meter with integrated straightener, display, and standard outputs.
ParameterDN 8DN 15DN 20DN 25DN 32DN 40DN 50
SensorThermal mass flow sensor
Measured mediumCompressed air
Accuracy± 1.5% rdg. ± 0.3% f.s.
Operating temperature [°C]–20 … +60
Operating pressure [bar]up to 16
Digital outputRS 485 (Modbus RTU); optional M-Bus, Ethernet, Ethernet PoE
Analog output4–20 mA
Pulse outputGalvanically isolated pulse output
Power supply18 … 36 V DC, 5 W
HousingPolycarbonate (IP65)

No inlet section required

Integrated flow straightener enables installation without a long straight inlet section.

Ideal for energy monitoring

Designed for integrating multiple compressed air or nitrogen consumers into energy management systems.

Analog and digital outputs

Includes 4–20 mA and pulse output, plus Modbus RTU, Ethernet (Modbus/TCP, PoE), and M-Bus.

Full on-device configuration

Outputs, units, and parameters can be configured directly via the integrated display.

Compressed air and nitrogen measurement

Suitable for compressed air and nitrogen applications with measurement ranges up to 185 m/s (optional 224 m/s).

Energy and industrial processes

Energy sector

Energy monitoring

Reliable air and gas flow measurement to support energy monitoring and improve process efficiency.

Compressor station

Compressor stations (FAD)

FAD measurement

Free air delivery (FAD) measurement directly in pipelines, including during system operation.

Chemical industry

Chemical industry

Process flows

Accurate technical gas flow measurement for stable and safe chemical processes.

Contact

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Pod lipami 4 · 1370 Logatec, Slovenija

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