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Item # 0695 1526, VA 520 Flow Meter with R 1-1/4 Inch (in) Connection Thread and Stainless Steel 1.4404 Measuring Section

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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.






Specifications

Parameters

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

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

Accuracy on Request

± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.)

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

(Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus

RS 485 Interface

Analog Output for Cubic Feet per Minute (CFM)

4 to 20 mA

Pulse Output

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

Direct Current Voltage (VDC) Supply

18 to 36 V

Power Supply

5 W

Burden

< 500 Ω

Housing Material

Polycarbonate

Protection Rating

Ingress Protection (IP 65)

Measuring Section

Stainless Steel 1.4404
1-1/4
in

Mounting Position

Any

Low-Speed Air Flow (164 Feet (ft)/Sec (s))

140 L/min
80
cfm

Standard Air Flow (304 Feet (ft)/Sec (s))

265 m³/h
155
cfm

Maximum Air Flow (607 Feet (ft)/Sec (s))

530 m³/h
310
cfm

High-Speed Air Flow (735 Feet (ft)/Sec (s))

640 m³/h
375
cfm

Note for Air Flow

Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi

Low-Speed Argon (Ar) Flow (164 Feet (ft)/Sec (s))

220 L/min
130
cfm

Standard Argon (Ar) Flow (304 Feet (ft)/Sec (s))

415 m³/h
245
cfm

Maximum Argon (Ar) Flow (607 Feet (ft)/Sec (s))

830 m³/h
485
cfm

High-Speed Argon (Ar) Flow (735 Feet (ft)/Sec (s))

1005 m³/h
590
cfm

Note for Argon (Ar) Flow

Setting to DIN 1343: 32 ºF, 14.7 psi

Low-Speed Carbon Dioxide (CO2) Flow (164 Feet (ft)/Sec (s))

140 L/min
80
cfm

Standard Carbon Dioxide (CO2) Flow (304 Feet (ft)/Sec (s))

260 m³/h
155
cfm

Maximum Carbon Dioxide (CO2) Flow (607 Feet (ft)/Sec (s))

525 m³/h
305
cfm

High-Speed Carbon Dioxide (CO2) Flow (735 Feet (ft)/Sec (s))

635 m³/h
370
cfm

Note for Carbon Dioxide (CO2) Flow

Setting to DIN 1343: 32 ºF, 14.7 psi

Low-Speed Nitrogen (N2) Flow (164 Feet (ft)/Sec (s))

180 L/min
105
cfm

Standard Nitrogen (N2) Flow (304 Feet (ft)/Sec (s))

240 m³/h
140
cfm

Maximum Nitrogen (N2) Flow (607 Feet (ft)/Sec (s))

485 m³/h
285
cfm

High-Speed Nitrogen (N2) Flow (735 Feet (ft)/Sec (s))

590 m³/h
345
cfm

Note for Nitrogen (N2) Flow

Setting to DIN 1343: 32 ºF, 14.7 psi

Low-Speed Oxygen (O2) Flow (164 Feet (ft)/Sec (s))

135 L/min
80
cfm

Standard Oxygen (O2) Flow (304 Feet (ft)/Sec (s))

250 m³/h
145
cfm

Maximum Oxygen (O2) Flow (607 Feet (ft)/Sec (s))

505 m³/h
295
cfm

High-Speed Oxygen (O2) Flow (735 Feet (ft)/Sec (s))

610 m³/h
360
cfm

Note for Oxygen (O2) Flow

Setting to DIN 1343: 32 ºF, 14.7 psi

Low-Speed Nitrous Oxide (N2O) Flow (164 Feet (ft)/Sec (s))

140 L/min
80
cfm

Standard Nitrous Oxide (N2O) Flow (304 Feet (ft)/Sec (s))

260 m³/h
150
cfm

Maximum Nitrous Oxide (N2O) Flow (607 Feet (ft)/Sec (s))

520 m³/h
305
cfm

High-Speed Nitrous Oxide (N2O) Flow (735 Feet (ft)/Sec (s))

630 m³/h
370
cfm

Note for Nitrous Oxide (N2O) Flow

Setting to DIN 1343: 32 ºF, 14.7 psi

Low-Speed Natural Gas (NG) Flow (164 Feet (ft)/Sec (s))

85 L/min
50
cfm

Standard Natural Gas (NG) Flow (304 Feet (ft)/Sec (s))

155 m³/h
90
cfm

Maximum Natural Gas (NG) Flow (607 Feet (ft)/Sec (s))

310 m³/h
185
cfm

High-Speed Natural Gas (NG) Flow (735 Feet (ft)/Sec (s))

380 m³/h
220
cfm

Note for Natural Gas (NG) Flow

Setting to DIN 1343: 32 ºF, 14.7 psi

Flange Outer Pipe Diameter

42.4 mm
1.67
in

Flange Inner Pipe Diameter

36 mm
1.41
in

Dimension L (Flange)

18.7 in

Note for Dimension L (Flange)

Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site.

Dimension L1 (Flange)

10.83 in

Dimension H (Flange)

9.2 in

Dimension H1 (Flange)

6.5 in

Diameter D (Flange)

140 mm

Diameter K (Flange)

100 mm

n x Diameter L (Flange)

4 x 18

Connection Thread

R 1-1/4 in.

Thread Outer Pipe Diameter

42.4 mm
1.67
in

Thread Inner Pipe Diameter

36.0 mm
1.41
in

Dimension L (Thread)

18.7 Inch
475
mm

Note for Dimension L (Thread)

Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site!

Dimension L1 (Thread)

10.8 in
275
mm

Dimension H (Thread)

7.3 in
186.9
mm

Dimension H1 (Thread)

6.5 in
165.7
mm

Dimension A (Thread)

0.9 in
25
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

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.


 MORE IMAGES 

·  VA 520 Inline Flow Meters - 2

·  VA 520 Inline Flow Meters - 3


 DOWNLOADS 

Datasheet for VA 520 Inline Flow Meters
(PDF, 971KB)


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