Thermal mass flow sensor for compressed air and gases / CS Flow
Meter VA500 with display
Description
Contrary to the previously used bridge circuit the newly developed
evaluation electronics records all measured values digitally.
Recording and reducing energy costs and CO2 emissions while
increasing the sustainability of any compressed air system. With
our VA500 it is possible to monitor your consumption and analyze
your leakage flows with just one measuring device. Due to its
design, it is also ideal for mobile measurements.
Detailed image
Specification
| TECHNICAL DATA VA 500 |
| Parameters: | m³/h, l/min (1000 mbar, 20 °C) in case of compressed air resp. Nm³/h, Nl/min (1013 mbar, 0 °C) in case of gases |
| Units adjustable via keys at display: | m³/h, m³/min, l/min, l/s, ft/min, cfm, m/s, kg/h, kg/min, g/s, lb/min, lb/h |
| Adjustable via keypad: | Diameter for volume flow calculati- on, counter resettable |
| Sensor: | Thermal mass flow sensor |
| Measuring medium | Air, gases |
| Gas types are adjustable over CS service software or CS data
logger: | Air, nitrogen, argon, helium, CO2, oxygen, vacuum |
| Measure range: | See table page 75 |
Accuracy: (m.v.: of meas. value) (f.s.: of full scale) | ± 1.5 % of m.v. ± 0.3 % of f.s. on request ± 1.0 % of m.v. ± 0.3 % of f.s. |
| Operating temperature: | -30...110 °C probe tube -30...80 °C housing |
| Operating pressure: | -1...50 bar |
| Digital output: | RS 485 interface
(Modbus-RTU), Optional: Ethernet-Interface PoE), M-Bus |
| Analog output: | 4...20 mA for m³/h e. g. l/min; |
| Pulse output: | 1 Pulse per m³ or per liter galvani- cally 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 |
| Burden: | < 500 K |
| Housing: | Polycarbonate (IP 65) |
| Probe tube: | Stainless steel, 1.4301 Mounting length 220 mm, Ø 10 mm |
| Mounting thread: | G 1/2“ |
| Ø Casing: | 65 mm |
| Mounting position: | any |
Features
Measurement of mass flow direct output of standard volume flow
Highly accurate at small as well as higher flow rates
Pressure and temperature compensated by the thermal mass flow
principle
Quick and easy installation via a ½" ball valve
No moving parts, thus low maintenance
Vanishingly low pressure drop due to vanishingly low blockage of
the diameter
Can be used for compressed air and non-corrosive gases such as
nitrogen, oxygen, argon, helium, etc.
Contact US
Xi'an Yunyi Instrument Co., Ltd
E-mail: judy@369yb.com
Phone/WhatsApp:0086 17602903009
Add.: Room B11003, 10th Floor, Sihai Center, No. 424, Taihua North
Road, Weiyang District, Xi'an 710021, Shaanxi,China
