SKU: VA 400
Flow sensor VA 400 for compressed air and gases
Our mass flow sensor VA 400 comes in a robust housing in a version with or without an additional display to show the actual flow in m³/h as well as a counter in m³.
Specifications
| Measuring Principle | Calorimetric |
| Sensor | 2 x silicium chip |
| Measuring Medium | Air, gases |
| Gas Types (software-selectable) | Air, nitrogen, argon, nitrous oxide, CO2, oxygen |
| Accuracy | ±4% m.v. (±3% m.v. via 5-point ISO precision calibration) |
| Operating Temperature (probe) | -30…110 °C |
| Operating Temperature (housing) | -30…80 °C |
| Operating Pressure | Up to 50 bar |
| Analogue Output | 4…20 mA for m³/h or l/min |
| Pulse Output | 1 pulse per m³, signal high 24 VDC for 30 ms |
| PC Connection | SDI interface |
| Power Supply | 24 VDC |
| Burden | < 500 Ω |
| Housing Material | Polycarbonate |
| Probe Tube | Stainless steel 1.4301, mounting length 220 mm, Ø 10 mm |
| Mounting Thread | G 1/2" |
| Housing Diameter | 65 mm |
| Probe Lengths Available | 120, 160, 220, 300, 400 mm |
| Pipe Compatibility | 1/2" to 12" (DN 300) |
| Parameters (displayed) | m³/h, l/min (1000 mbar, 20°C) for compressed air; Nm³/h, Nl/min (1013 mbar, 0°C) for gases |
| Units (software-adjustable) | m³/h, m³/min, l/min, l/s, ft/min, cfm, m/s, kg/h, kg/min |
| Flow Range (Standard 1", DN 25) | 0.5…148 m³/h |
| Flow Range (Standard 2", DN 50) | 2…600 m³/h |
| Flow Range (Max. version 2", DN 50) | 2.5…1198 m³/h |
| Flow Range (High-Speed 2", DN 50) | 4.6…1450 m³/h |
| Max Velocity (Standard) | 92.7 m/s |
| Max Velocity (Max. version) | 185.0 m/s |
| Max Velocity (High-Speed version) | 224.0 m/s |
Datasheet
Download datasheet (PDF)Description
Mass Flow Sensor for Compressed Air and Gases – VA 400
Our mass flow sensor VA 400 comes in a robust housing in a version with or without an additional display to show the actual flow in m³/h as well as a counter in m³.
Even under pressure, the mass flow sensor VA 400 is mounted by means of a standard 1/2“ ball valve. During mounting and dismounting the safety ring avoids an uncontrolled ejection of the probe which may be caused by the operating pressure. For the mounting into different pipe diameters VA 400 is available in the following probe lengths: 120, 160, 220, 300, 400 mm. So the flow sensors are being mounted into existing pipelines with inner diameters of 1/2“ upwards. The exact positioning of the sensor in the middle of the pipe is granted by means of the engraved depth scale. The maximum mounting depth corresponds with the resprective probe length. Example: VA 400 with probe length 220 mm has a maximum mounting depth of 220 mm.
Special features of Mass Flow Sensor VA 400
- Integrated display for m³/h and m³
- Depth scale for accurate installation
- Usable from 1/2″ to 12″ (DN 300)
- Easy installation under pressure
- 4…20 mA analogue output for m³/h resp. m³/min
- Pulse output for m³
- Inner diameter adjustable via keypad
- Consumption counter resettable
Need this instrument calibrated?
Unitest Instruments operates Singapore's SAC-SINGLAS accredited calibration laboratory (ISO/IEC 17025, Lab No. LA-2023-0845-C). We provide traceable calibration with full documentation for most test & measurement instruments.
Get a price for the Flow sensor VA 400 for compressed air and gases
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