CS INSTRUMENTS VA520 Consumption meter with integrated 1/4", DN 8 measuring section 1.4301
The VA 520 is a permanently installed flow meter. It monitors consumption and analyzes leaks, ideal for distribution stations and for billing individual consumers.
CS Instruments
As a leading manufacturer of compressed air measurement technology, CS INSTRUMENTS stands for highest quality and innovation. "Made in Germany" is our practice - development, production, and calibration take place exclusively in Germany.
VA 520 1/4", DN 8 - Thermal mass flow sensor for flow measurement
Optimize your energy costs and increase sustainability with the VA 520 Consumption meter with integrated 1/4", DN 8 measuring section 1.4301. This permanently installed flow meter monitors your consumption and analyzes leaks - ideal for distribution stations, departments or for billing individual consumers.
Advantages of the compact VA 520 flow sensor:
- Measuring accuracy: High accuracy when measuring the mass flow with direct output of the standard volume flow.
• Kompensiert: Druck- und temperaturkompensiert durch das thermische Massenstromprinzip.
- Easy handling: Quick replacement and cleaning thanks to the integrated measuring section.
- Easy to maintain: Virtually maintenance-free thanks to the absence of moving parts.
- Pressure loss: Negligible blockage of the diameter.
- Compatibility: Suitable for compressed air and non-corrosive gases.
• Schnittstellen: Standardmäßig 04…20 mA, Puls, Modbus-RTU (RS 485), optional auch Modbus TCP, PoE und M-Bus.
- Measuring range: Up to 40 bar pressure and -30 to 80°C temperature.
- Protection class: IP65, optimum protection against environmental influences.
- Display: Displays measured values and enables simple settings.
- Reset: Counter reading can be reset directly via the display.
- Precision: Accuracy of ± 1.5% or ± 1% of the measured value.
Technical details of the VA 520:
- Digital interfaces: Connection to energy management and building management systems possible.
- Easy installation: Quickly ready for use.
- Flexible unit selection: Selectable via the display (m³/h, l/min, kg/h, etc.).
- High measuring accuracy: Also ideal for leakage measurements in the lower measuring range.
- Calorimetric principle: No additional pressure or temperature measurement required.
- Diagnostic functions: Comprehensive diagnostics and parameter queries via Modbus RTU.
| Burden | < 500 Ω |
| Operating temperature (°C) | -30...80 °C, -20...80 °C with pressure sensor |
| Measured variables | m³/h, l/min (1000 mbar, 20 °C) for compressed air or Nm³/h, Nl/min (1013 mbar, 0 °C) for gases |
| Units via keypad on the display | m³/h, m³/min, l/min, l/s, ft/min, cfm, m/s, kg/h, kg/min, g/s, lb/min, lb/h |
| Sensor | Thermal mass flow sensor |
| Measuring medium | Air, gases |
| Gas types via CS Service Software or | Air, nitrogen, argon, CO2, oxygen |
| Accuracy (v. M. = from measured value) (v. E. |
± 1.5 % of the average ± 0.3 % of the average on request: ± 1 % of the average ± 0.3 % of the average |
| Operating pressure (bar) | -1 to 16 bar optionally up to PN 40 |
| Digital output | RS 485 interface (Modbus-RTU), optional: Ethernet interface PoE, M-Bus |
| Analogue output | 4...20 mA for m³/h or l/min |
| Pulse output | 1 pulse per m³ or per liter galvanically isolated. Pulse value can be set on the display. Alternatively, the pulse output can be used as an alarm relay |
| Supply | 18...36 VDC, 5 W |
| Housing | Polycarbonate (IP 65) |
| Installation position | any |
| Measuring section | Stainless steel, 1.4404 or 1.4301 |