CS Instrument Thermal Mass Flow Meter | Gas flow meter
Insertion Mass Flow Meter Model VA 500/ VA 520
Our
affordable mass flow meter for compressed air and gases works according
to the approved calorimetric measuring principle. The additional
pressure and temperature compensation are not necessary.
Contrary to the previously used bridge circuit the newly developed
evaluation electronics records all measured values digitally. This
enables very precise and fast measurements.
Due
to the new evaluation electronics, all VA 500/ VA 520 models have an
integrated Modbus output as a standard. So all parameters can be easily
transferred via Modbus.
Due
to its compact design, it is possible to monitor all compressed air
systems from the compressor to the smallest compressed air tool (1/4“ to
2 inches) with the new mass flow sensor VA 520.
VA
500 flow sensors are available for larger pipe diameters from DN 50 to
DN 300. Apart from compressed air also other gases like e.g. nitrogen,
oxygen, and CO2 can be measured.
Specification
| Model |
VA 500 |
VA520 |
||
| Insertion | Inline Flange | Inline Pipe Thread | ||
| 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 a 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 are adjustable over CS service software or CS data logger | Air, nitrogen, argon, helium, CO2, oxygen, vacuum | |||
|
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
|
-30…80 °C | ||
| Operating pressure | -1…50 bar | -1 to 16 bar optional to PN 40 | ||
| 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 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 | |||
| Burden | < 500 Ω | |||
| Housing | Polycarbonate (IP 65) | |||
| Probe tube |
Stainless steel, 1.4301
Mounting length 220 mm, Ø 10 mm
|
N/A | ||
| Mounting thread | G 1/2“ |
N/A
|
||
| Ø Casing | 65 mm |
N/A
|
||
| Measuring section | N/A |
Stainless steel, 1.4301 or 1.4571
|
||
| Process connection | N/A |
Flange (to DIN EN 1092-1 e. g. ANSI 150 Ibs or ANSI 300 Ibs)
|
R 1/4“ to R 2“ (BSP British Standard Piping) or 1/2“
to 2“ NPT-thread
|
|
| Mounting position | Anything | |||
More info and price please contact marketing@wmablog.com
