Universal and easy-to-install flow meter with display — VA 400
Спецификация VA 400
Available on request
Delivery across Russia
Order phone: +7(800)777-18-50
Description
Thanks to its ease of installation, the VA 400 flow meter is the ideal tool for conducting pneumatic audits – it is absolutely effortless to move one flow meter between different sections without shutting down the system. The flow meter is installed using a standard 1/2' ball valve even in a pressurized system. During installation and removal, the protective ring prevents the probe from being ejected from the pipe due to pressure. For installation on pipelines of various diameters, VA 400 models are available with probe lengths of 120, 160, 220, 300, 400 mm. The flow meter can be installed on pipes with an internal diameter of 1/2' and above. The scale engraved on the probe facilitates precise alignment of the sensitive element at the center of the pipeline. The maximum immersion length corresponds to the probe length. Thus, for the VA 400 with a probe length of 220 mm, the maximum immersion length is also 220 mm.
Thanks to the wide measurement range, the device can be used even for applications requiring extremely high flow rates (large gas volumes with a small diameter). The measurement range depends on the internal diameter of the pipe (see the table in the specifications).
The flow meter features a robust housing. Available in versions with and without a display. The display can show the current flow in m3/h and the accumulated flow in m3.
By changing the device settings using software, one device can be used to measure the flow of various gases. The VA 400 flow meter can measure the flow of air, nitrogen, natural gas, argon, CO2, oxygen, and other gases.
Advantages
- Built-in display for m³/h and m³;
- Immersion scale for precise installation;
- Can be used on pipelines with diameters from 1/2“ to 12“ (DN 300);
- Simple installation under pressure;
- Analog output 4...20 mA for m³/h or m3/min;
- Pulse output for m³;
- Internal diameter value settable from the display;
- Resettable accumulated flow counter.
ATTENTION, the device is currently discontinued, the modern improved model is — VA 500
- Specifications
- Overall Drawing
- Connection diagram
- Applications
| Technical Specifications VA400 | |
| Measurable parameters |
m³/h, l/min (1000 mbar, 20°C) for compressed air. Nm³/h, Nl/min (1013 mbar, 0°C) for gases |
| Configurable via software | m³/h, m³/min, l/min, l/s, ft/min, cfm, m/s, kg/h, kg/min |
| Configurable from display |
Diameter for volumetric flow calculation, resettable counter |
| Measurement principle | Thermoanemometric |
| Sensing element | Two silicon plates |
| Measured medium | Air, gases |
| Gases configurable via software |
Air, nitrogen, argon, nitric oxide, CO2, oxygen |
| Accuracy | ± 4 % of measured value ± 3 % of measured value with 5-point ISO calibration |
| Operating temperature | -30...110 °C for probe -30...80 °C for housing |
| Operating pressure | up to 50 bar |
| Analog output | 4...20 mA for m³/h or l/min on request: scaling for cfm, m³/min, l/min, l/s, ft/min, m/s |
| Pulse output | 1 pulse per m³, signal height 24 VDC, for 30 ms |
| PC connection | SDI interface |
| Power supply | 24 VDC |
| Load | <500 Ohm |
| Housing material | Polycarbonate |
| Sensor probe | Stainless steel, 1.4301, installation length 220 mm, Ø 10 mm |
| Process connection | Thread G 1/2“ |
| Housing Ø: | 65 mm |
|
Connector A |
Connector B |
 |
 |
|
Contact Number |
Contact Color |
Designation |
Designation |
|
Contact 1 |
brown |
NC (SDI) |
NC |
|
Contact 2 |
white |
-VB |
NC |
|
Contact 3 |
blue |
+VB |
NC |
|
Contact 4 |
black |
I+ |
Pulse |
|
Contact 5 |
gray |
NC (pulse) |
Pulse |
|
Designation |
Comment |
|
-VB |
Power supply negative 0 V |
|
+VB |
Power supply positive 12...30 VDC |
|
I + |
Current signal 4..20 mA – actual flow |
|
Connector A |
Required only for connection to DS 400 |
|
Pulse |
Pulse per unit of flow |
|
NC (SDI) |
Do not apply voltage or connect to ground. Cut off and insulate. |
|
Connector A |
Only for connection to DS 400 |
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