Insertion Type Flow meter for Compressed Air and Gases – VA500
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- Inner diameter adjustable via keypad
- Option: Bi-directional measurement.
- The sensor can be removed during operation and cleaned
- NEW High accuracy sensor gives potential of 1000:1 turndown.
- Easy and affordable hot tap installation
- Display engineering units are keypad selectable (m3/h, m3/min, l/min, l/s, kg/h, kg/min, kg/s, cfm)Depth scale for accurate installation
- Accuracy +/- 1.5% of m.v +/- 0.3% of FS
- 4-20mA and pulse outputs (galvanically isolated) as standard
- Digital Output RS458 Interface, Modbus RTU
- Measuring section option for even greater accuracy
- Negligible pressure loss
- No moving parts
- No additional temperature or pressure sensors necessary
- Gas type software selectable (nitrogen, oxygen, CO2, Argon, Helium)
The VA500 Series flow meter operates using the well-proven colorimetric measuring principle. This technology uses a heated sensor which is cooled by the gas flow as it passes and the degree of cooling is dependent upon the mass flow rate of the flow medium. Through precise measurement of the cooling effect a direct mass flow reading can be calculated therefore additional temperature and pressure sensors are not required. The VA500 not only calculates and display mass flow rate and total but also provides signal outputs to interface with other process instrumentation. A 4-20mA output linear to instantaneous mass flow rate and a scaled pulse for flow total are available as standard.
VA500 Features:
- NEW High accuracy sensor gives potential of 1000:1 turndown.
- Easy and affordable hot tap installation
- Display engineering units are keypad selectable (m3/h, m3/min, l/min, l/s, kg/h, kg/min, kg/s, cfm)Depth scale for accurate installation
- Accuracy +/- 1.5% of m.v +/- 0.3% of FS
- 4-20mA and pulse outputs (galvanically isolated) as standard
- Digital Output RS458 Interface, Modbus RTU
- Measuring section option for even greater accuracy
- Negligible pressure loss
- No moving parts
- No additional temperature or pressure sensors necessary
- Gas type software selectable (nitrogen, oxygen, CO2, Argon, Helium
Specs
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Product Specification
Below is the product specification of the Insertion Type Flow meter for Compressed Air and Gases – VA500 from CS Instruments. If you require further information, please contact our expert customer service advisors on 01722 442 307.
Parameters:
m³/h, l/min (1000mbar, 20°C) in case of compressed air or Nm³/h, Nl/min (1013mbar, 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 calculation, counter resettable
Sensor:
Thermal mass flow sensor
Measured medium:
Air, gases
Gas types are adjustable over CS service software or CS data logger:
Air, nitrogen, argon, helium, CO2, oxygen, vacuum
Measuring range:
See table page 12
Accuracy: (m.v.: of meas. vale) (f.s.: of full scale)
± 1.5% of m.v. ± 0.3% of f.s. on request: ± 1% of m.v. ± 0.3% of f.s.
Operating temperature:
-30…110°C sensor tube-20…85 °C with pressure sensor-20…+70°C housing
Supply:
18…36VDC, 5W
Operating pressure:
-1…50bar (for pressure > 10bar – order additional high-pressure protection)
Digital output:
RS 485 interface, (Modbus-RTU), optional: Ethernet interface PoE, M-Bus
Analogue output:
4…20mA for m³/h or l/min
Pulse output:
1 pulse per m³ or per litre electrically isolated. Pulse weight can be set on the display. Alternatively, the pulse output can be used as an alarm
Burden:
< 500ohm
Housing:
Polycarbonate (IP 65)
Sensor tube:
Stainless steel, 1.4301 Installation length 220mm, Ø 10mm
Mounting thread:
G 1/2″, 1/2″ NPT male thread
Ø housing:
65mm
Mounting position:
Any