Compressed Air Systems, Inc.
Compressed Air Systems, Inc.
9303 Stannum Street
Tampa, FL 33619-2658

Compressed Air Systems, Inc. - Central Florida
11609 S Orange Blossom Trail
Orlando, FL 32837

Toll Free: 800.626.8177 • Phone: 813.626.8177 • Fax: 813.628.0187
Email: [email protected] • Web Address:www.compressedairsystems.com
All Categories > Compressed Air Gas Monitors & Instrumentation > Flow Thermal > VA 520 Inline Flowmeters > Item # 0695 0520  


Item # 0695 0520, VA 520 Stainless Steel 1.4301 Flowmeter with R 1/4 Inch (in) Connection Thread
Web Price QUOTE

Display shows 2 values at the same time:
  • Present flow in m³/h, CFM
  • Total consumption (counter reading) in CF
  • Temperature measurement
Readout values in the display can be rotated by 180º, e.g. for overhead installation.





Financing  · Specifications  · Measuring Range  · Thread  · Connection to Different Bus Systems Options  · With a Key Stroke  · Options  · Application-Technological Features  · Additional Information

Financing

Approve Payments
Finance with Approve Payments



Specifications

Parameters
m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0 ºC) in case of gases

Units Adjustable Via Keys at Display
CFM
ft/min
g/s
kg/h
kg/min
l/s
lb/h
lb/min
m/s
m³/h
m³/min

Sensor
Thermal Mass Flow Sensor

Measured Medium
Air
Gases

Gas Types are Adjustable Over CS Service Software or CS Data Logger
Air
Argon
CO2
Nitrogen
Oxygen

Accuracy
± 0.3% of Full Scale (F.S.)
± 1.5% of Measured Value (M.V.)

Accuracy on Request
± 1.0% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.)

Operating Temperature
-22 to 176 ºF

Operating Temperature with Pressure Sensor
-25 to 349 ºF

Operating Pressure
-1 to 232 psi

Optional Pressure
Up to Nominal Pressure (PN) 40

Digital Output
M-Bus
Modbus-Remote Terminal Unit (RTU)
Optional: Ethernet Interface (PoE)
RS 485 Interface

Analog Output for Cubic Feet Per Minute (CFM)
4 to 20 mA

Pulse Output
1 pulse per CF or per liter electrically isolated. Pulse weight can be set on the display. Alternatively, the pulse output can be used as an alarm relay.

Direct Current (DC) Supply Voltage
18 to 36 V

Power Supply
5 W

Burden
<500 Ω

Housing Material
Polycarbonate

Protection Rating
Ingress Protection (IP 65)

Material
Stainless Steel 1.4301

Mounting Position
Any

Dimension L (Thread)
194 mm
7.6 in


Measuring Range

Low-Speed Air Flow (164 Feet Per Seconds (ft/s))
25 L/min
0.9 ft³/min

Standard Air Flow (304 Feet Per Seconds (ft/s))
50 m³/h
1.8 ft³/min

Maximum Air Flow (607 Feet Per Seconds (ft/s))
105 m³/h
3.6 ft³/min

High-Speed Air Flow (735 Feet Per Seconds (ft/s))
130 m³/h
4.5 ft³/min

Note for Air Flow
Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi

Low-Speed Argon (Ar) Flow (164 Feet Per Seconds (ft/s))
45 L/min
1.5 ft³/min

Standard Argon (Ar) Flow (304 Feet Per Seconds (ft/s))
85 m³/h
3 ft³/min

Maximum Argon (Ar) Flow (607 Feet Per Seconds (ft/s))
170 m³/h
6 ft³/min

High-Speed Argon (Ar) Flow (735 Feet Per Seconds (ft/s))
205 m³/h
7.2 ft³/min

Note for Argon (Ar) Flow
Setting to DIN 1343: 32 ºF, 14.7 psi

Low-Speed Carbon Dioxide (CO2) Flow (164 Feet Per Seconds (ft/s))
25 L/min
0.9 ft³/min

Standard Carbon Dioxide (CO2) Flow (304 Feet Per Seconds (ft/s))
50 m³/h
1.8 ft³/min

Maximum Carbon Dioxide (CO2) Flow (607 Feet Per Seconds (ft/s))
105 m³/h
3.6 ft³/min

High-Speed Carbon Dioxide (CO2) Flow (735 Feet Per Seconds (ft/s)
130 m³/h
4.5 ft³/min

Note for Carbon Dioxide (CO2) Flow
Setting to DIN 1343: 32 ºF, 14.7 psi

Low-Speed Nitrogen (N2) Flow (164 Feet Per Seconds (ft/s))
25 L/min
0.9 ft³/min

Standard Nitrogen (N2) Flow (304 Feet Per Seconds (ft/s))
50 m³/h
1.5 ft³/min

Maximum Nitrogen (N2) Flow (607 Feet Per Seconds (ft/s))
100 m³/h
3.3 ft³/min

High-Speed Nitrogen (N2) Flow (735 Feet Per Seconds (ft/s))
120 m³/h
4.2 ft³/min

Note for Nitrogen (N2) Flow
Setting to DIN 1343: 32 ºF, 14.7 psi

Low-Speed Oxygen (O2) Flow (164 Feet Per Seconds (ft/s))
25 L/min
0.9 ft³/min

Standard Oxygen (O2) Flow (304 Feet Per Seconds (ft/s))
50 m³/h
1.8 ft³/min

Maximum Oxygen (O2) Flow (607 Feet Per Seconds (ft/s))
100 m³/h
3.6 ft³/min

High-Speed Oxygen (O2) Flow (735 Feet Per Seconds (ft/s))
125 m³/h
4.2 ft³/min

Note for Oxygen (O2) Flow
Setting to DIN 1343: 32 ºF, 14.7 psi

Low-Speed Nitrous Oxide (N2O) Flow (164 Feet Per Seconds (ft/s))
25 L/min
0.9 ft³/min

Standard Nitrous Oxide (N2O) Flow (304 Feet Per Seconds (ft/s))
50 m³/h
1.8 ft³/min

Maximum Nitrous Oxide (N2O) Flow (607 Feet Per Seconds (ft/s))
105 m³/h
3.6 ft³/min

High-Speed Nitrous Oxide (N2O) Flow (735 Feet Per Seconds (ft/s))
125 m³/h
4.5 ft³/min

Note for Nitrous Oxide (N2O) Flow
Setting to DIN 1343: 32 ºF, 14.7 psi

Low-Speed Natural Gas (NG) Flow (164 Feet Per Seconds (ft/s))
15 L/min
0.6 ft³/min

Standard Natural Gas (NG) Flow (304 Feet Per Seconds (ft/s))
30 m³/h
0.9 ft³/min

Maximum Natural Gas (NG) Flow (607 Feet Per Seconds (ft/s))
60 m³/h
2.1 ft³/min

High-Speed Natural Gas (NG) Flow (735 Feet Per Seconds (ft/s))
75 m³/h
2.7 ft³/min

Note for Natural Gas (NG) Flow
Setting to DIN 1343: 32 ºF, 14.7 psi


Thread

Connection Thread
R 1/4 in.

Thread Outer Pipe Diameter
13.7 mm
0.54 in

Thread Inner Pipe Diameter
8.9 mm
0.35 in

Dimension L1 (Thread)
5.3 in
137 mm

Dimension H (Thread)
6.8 in
174.7 mm

Dimension H1 (Thread)
6.5 in
165.7 mm

Dimension A (Thread)
0.5 in
15 mm


Connection to Different Bus Systems Options
There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Ethernet Modbus TCP
  • M12 Ethernet port, x-coded


With a Key Stroke
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression


Options
Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.


Application-Technological Features
  • 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 affordable installation
  • Units freely selectable via keys on the display CF, lbs, CFM
  • Compressed air counter up to 1,999,999,999 m³ can be reset to Inch (in)zero Inch (in) via keypad
  • Analog output 4 to 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 ºF, calibration cycle, error codes, serial number. All parameters can be read out and changed via Modbus


Additional Information
Modbus-RTU output
4 to 20 mA output for present flow

Pulse output for total flow (counter reading), galvanically isolated or M-Bus (optionally)

New: Integrated pressure sensor (optional)

Measuring unit can be unscrewed: Removal of the entire measuring section not necessary, no by-pass necessary

Easy installation into the existing pipeline due to integrated measuring section and weld neck flange (according to EN 1092-1 PN 40)

High measuring accuracy due to defined measuring section (inlet and outlet section)

Display head rotatable by 180º e.g. in case of reverse flow direction

The sensor can be removed and cleaned.