Digital display CS Flow Meter VA500 / VA520 inline flowmeter for
compressed air and gases
Description
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.
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 |
Application-technological features of the flow meters VA 520
• Digital interfaces such as Modbus-RTU, Ethernet (PoE) and M-Bus
enable connection to higher-level systems such as energy management
systems, building management systems, PLC,...
• Easy and aff ordable installation
• Units freely selectable via keys on the display m³/h, m³/min,
l/min, l/s, kg/h, kg/min, kg/s, cfm
• Compressed air counter up to 1,999,999,999 m³ can be reset to
“zero” via keypad
• Analog output 4...20 mA, pulse output (electrically isolated)
• High measuring accuracy even in the lower measuring range (ideal
for leakage measurement)
• Negligibly small loss of pressure
• Calorimetric measuring principle, no additional pressure and
temperature measurement necessary, no mechanically moved parts
• Comprehensive diagnostic functions can be read out on the display
or remote access via Modbus-RTU such as exceeding max./min values
°C, calibration cycle, error codes, serial number. All parameters
can be read out and changed via Modbus
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
