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All Categories > Flow Thermal > VA 521 Compact Inline Flowmeters for Compressed Air and Other Types of Gas > Item # 0696 0521 A3  
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Item # 0696 0521 A3, VA 521 G 3/4 Inch (in) Thread Size Compact Inline Flowmeter

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No inlet section necessary - integrated flow straightener - sensor unit removable

The newly developed VA 521 combines modern digital interfaces for connection to energy monitoring systems with a small, compact design. The VA 521 is always used when many machines (compressed air consumers) are to be integrated into an energy monitoring network.

Readout values in the display can be rotated by 180º, e.g. for overhead installation

The sensor can be removed from the measuring section and cleaned.





Financing  · Specifications  · Measuring Range  · Display Shows 2 Values at the Same Time  · Screw-In Thread  · Advantages at a Glance  · With a Key Stroke

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

Up to 232 psi

Optional Pressure

Up to 580 psi

Digital Output

Modbus-Remote Terminal Unit (RTU)
RS 485 Interface

Optional Digital Output

Ethernet Interface
M-Bus

Power over Ethernet (PoE)

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

Aluminum
Stainless Steel 316L

Mounting Position

Any


Measuring Range

Measuring Section

DN20

Thread Size

G 3/4 in.

Measuring Range Full Scales

170 m³/h
100
ft³/min

Dimension L

135 mm

Dimension B

55 mm

Dimension H1

50 mm

Dimension H

109.65 mm

Dimension A1

26 mm

Dimension A

20 mm

Note for Measuring Range

Flow measuring ranges VA 521 (max version 185 m/s) for compressed air (ISO 1217:1000 mbar, 20 ºC)
Measuring ranges for other types of gas.


Display Shows 2 Values at the Same Time

Display Shows 2 Values at The Same Time

  • Present flow in, CFM, l/min/m³/min
  • Total consumption (counter reading) in CF, l, kg
  • Temperature measurement


Screw-In Thread

Screw-In Thread

Easy installation into the existing pipe due to integrated measuring section (suitable for 1/2", 3/4", 1", 1 1/4", 1 1/2" or 2" lines)


Advantages at a Glance
  • Compact, small design - for use in machines, behind maintenance unit on the end user
  • All interfaces are freely programmable via the display
  • Modbus-RTU output
  • 4 to 20 mA analog output for present flow
  • Pulse output total flow (counter reading), electrically isolated. Optional: M-Bus, Ethernet interface or PoE
  • New: Integrated pressure sensor (optional)




With a Key Stroke
  • Reset counter reading
  • Select units
  • Parameterise interfaces




 DOWNLOADS 

Datasheet for VA 521 Compact Inline Flowmeters for Compressed Air and Other Types of Gas
(PDF, 481KB)


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