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VA 520 Inline Flow Meters

 
Check up to five results to perform an action.

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.



   
  Results 1 - 16 of 16 1 

Item #

Item Name

Parameters

Units Adjustable Via Keys at Display

Sensor

Measured Medium

Gas Types are Adjustable Over CS Service Software or CS Data Logger

Accuracy

Accuracy on Request

Operating Temperature

Operating Temperature with Pressure Sensor

Operating Pressure

Optional Pressure

Digital Output

Analog Output for Cubic Feet per Minute (CFM)

Pulse Output

Direct Current Voltage (VDC) Supply

Power Supply

Burden

Housing Material

Protection Rating

Measuring Section

Mounting Position

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

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

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

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

Note for Air Flow

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

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

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

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

Note for Argon (Ar) Flow

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

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

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

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

Note for Carbon Dioxide (CO2) Flow

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

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

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

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

Note for Nitrogen (N2) Flow

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

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

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

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

Note for Oxygen (O2) Flow

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

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

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

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

Note for Nitrous Oxide (N2O) Flow

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

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

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

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

Note for Natural Gas (NG) Flow

Flange Outer Pipe Diameter

Flange Inner Pipe Diameter

Dimension L (Flange)

Note for Dimension L (Flange)

Dimension L1 (Flange)

Dimension H (Flange)

Dimension H1 (Flange)

Diameter D (Flange)

Diameter K (Flange)

n x Diameter L (Flange)

Connection Thread

Thread Outer Pipe Diameter

Thread Inner Pipe Diameter

Dimension L (Thread)

Note for Dimension L (Thread)

Dimension L1 (Thread)

Dimension H (Thread)

Dimension H1 (Thread)

Dimension A (Thread)

Connection to different Bus systems Options

With a Key Stroke

Options

Application-Technological Features

Additional Information
0695 1520 VA 520 Flow Meter with R 1/4 Inch (in) Connection Thread and Stainless Steel 1.4404 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4404 Any 25 L/min
0.9 cfm 		50 m³/h
1.8 cfm 		105 m³/h
3.6 cfm 		130 m³/h
4.5 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 45 L/min
1.5 cfm 		85 m³/h
3 cfm 		170 m³/h
6 cfm 		205 m³/h
7.2 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 25 L/min
0.9 cfm 		50 m³/h
1.8 cfm 		105 m³/h
3.6 cfm 		130 m³/h
4.5 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 25 L/min
0.9 cfm 		50 m³/h
1.5 cfm 		100 m³/h
3.3 cfm 		120 m³/h
4.2 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 25 L/min
0.9 cfm 		50 m³/h
1.8 cfm 		100 m³/h
3.6 cfm 		125 m³/h
4.2 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 25 L/min
0.9 cfm 		50 m³/h
1.8 cfm 		105 m³/h
3.6 cfm 		125 m³/h
4.5 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 15 L/min
0.6 cfm 		30 m³/h
0.9 cfm 		60 m³/h
2.1 cfm 		75 m³/h
2.7 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A R 1/4 in. 13.7 mm
0.54 in 		8.9 mm
0.35 in 		7.6 Inch
194 mm 		N/A 5.3 in
137 mm 		6.8 in
174.7 mm 		6.5 in
165.7 mm 		0.5 in
15 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 1527 VA 520 Flow Meter with R 3/8 Inch (in) Connection Thread and Stainless Steel 1.4404 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4404 Any 225 nL/min
8 cfm 		25 m³/h
14.7 cfm 		50 m³/h
29.4 cfm 		60 m³/h
35.3 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 330 nL/min
11.7 cfm 		35 m³/h
20.5 cfm 		75 m³/h
44.1 cfm 		95 m³/h
55.9 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 225 nL/min
7.9 cfm 		25 m³/h
14.7 cfm 		50 m³/h
29.4 cfm 		60 m³/h
35.3 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 205 nL/min
7.2 cfm 		20 m³/h
11.7 cfm 		45 m³/h
26.4 cfm 		55 m³/h
32.3 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 215 nL/min
7.5 cfm 		20 m³/h
11.7 cfm 		45 m³/h
26.4 cfm 		55 m³/h
32.3 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 220 nL/min
7.7 cfm 		20 m³/h
11.7 cfm 		45 m³/h
26.4 cfm 		60 m³/h
35.3 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 130 nL/min
4.5 cfm 		14 m³/h
8.8 cfm 		25 m³/h
14.7 cfm 		35 m³/h
20.5 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A R 3/8 in. 17.2 mm
0.68 in 		12.5 mm
0.49 in 		11.8 Inch
300 mm 		N/A 7.9 in
200 mm 		6.9 in
175 mm 		6.5 in
165.7 mm 		0.5 in
15 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 1521 VA 520 Flow Meter with R 1/2 Inch (in) Connection Thread and Stainless Steel 1.4404 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4404
1/2 in 		Any 20 L/min
14 cfm 		45 m³/h
25 cfm 		90 m³/h
50 cfm 		110 m³/h
60 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 35 L/min
20 cfm 		70 m³/h
40 cfm 		140 m³/h
80 cfm 		170 m³/h
100 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 20 L/min
14 cfm 		45 m³/h
25 cfm 		90 m³/h
50 cfm 		105 m³/h
60 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 20 L/min
13 cfm 		40 m³/h
25 cfm 		80 m³/h
45 cfm 		100 m³/h
55 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 20 L/min
13 cfm 		40 m³/h
25 cfm 		85 m³/h
50 cfm 		105 m³/h
60 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 20 L/min
14 cfm 		40 m³/h
25 cfm 		85 m³/h
50 cfm 		105 m³/h
60 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 14.4 L/min
8 cfm 		25 m³/h
15 cfm 		50 m³/h
30 cfm 		65 m³/h
35 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 21.3 mm
0.84 in 		16.1 mm
0.63 in 		11.8 in N/A 8.27 in 8.3 in 6.5 in 95 mm 65 mm 4 x 14 R 1/2 in. 21.3 mm
0.84 in 		16.1 mm
0.63 in 		11.8 Inch
300 mm 		Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! 8.2 in
210 mm 		6.9 in
176.4 mm 		6.5 in
165.7 mm 		0.7 in
20 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 1522 VA 520 Flow Meter with R 3/4 Inch (in) Connection Thread and Stainless Steel 1.4404 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4404
3/4 in 		Any 45 L/min
25 cfm 		85 m³/h
50 cfm 		175 m³/h
100 cfm 		215 m³/h
125 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 75 L/min
40 cfm 		135 m³/h
80 cfm 		275 m³/h
160 cfm 		335 m³/h
195 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 45 L/min
25 cfm 		85 m³/h
50 cfm 		175 m³/h
100 cfm 		210 m³/h
125 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 70 L/min
40 cfm 		80 m³/h
45 cfm 		160 m³/h
95 cfm 		195 m³/h
115 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 45 L/min
25 cfm 		80 m³/h
45 cfm 		165 m³/h
95 cfm 		205 m³/h
120 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 45 L/min
25 cfm 		85 m³/h
50 cfm 		170 m³/h
100 cfm 		210 m³/h
120 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 25 L/min
15 cfm 		50 m³/h
30 cfm 		105 m³/h
60 cfm 		125 m³/h
70 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 26.9 mm
1.06 in 		21.7 mm
0.85 in 		18.7 in Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site. 10.83 in 8.5 in 6.5 in 105 mm 75 mm 4 x 14 R 3/4 in. 26.9 mm
1.06 in 		21.7 mm
0.85 in 		18.7 Inch
475 mm 		Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! 10.8 in
275 mm 		7.0 in
179.2 mm 		6.5 in
165.7 mm 		0.7 in
20 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 1523 VA 520 Flow Meter with R 1 Inch (in) Connection Thread and Stainless Steel 1.4404 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4404
1 in 		Any 75 L/min
45 cfm 		145 m³/h
85 cfm 		290 m³/h
170 cfm 		355 m³/h
210 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 120 L/min
70 cfm 		230 m³/h
135 cfm 		460 m³/h
270 cfm 		555 m³/h
325 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 75 L/min
45 cfm 		145 m³/h
85 cfm 		290 m³/h
170 cfm 		350 m³/h
205 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 130 L/min
75 cfm 		135 m³/h
75 cfm 		270 m³/h
155 cfm 		325 m³/h
190 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 75 L/min
40 cfm 		140 m³/h
80 cfm 		280 m³/h
165 cfm 		340 m³/h
200 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 75 L/min
45 cfm 		140 m³/h
85 cfm 		285 m³/h
170 cfm 		345 m³/h
205 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 45 L/min
25 cfm 		85 m³/h
50 cfm 		170 m³/h
100 cfm 		210 m³/h
120 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 33.7 mm
1.34 in 		27.3 mm
1.07 in 		18.7 in Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site. 10.83 in 8.7 in 6.5 in 115 mm 85 mm 4 x 14 R 1 in. 33.7 mm
1.34 in 		27.3 mm
1.07 in 		18.7 Inch
475 mm 		Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! 10.8 in
275 mm 		7.1 in
182.6 mm 		6.5 in
165.7 mm 		0.9 in
25 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 1526 VA 520 Flow Meter with R 1-1/4 Inch (in) Connection Thread and Stainless Steel 1.4404 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4404
1-1/4 in 		Any 140 L/min
80 cfm 		265 m³/h
155 cfm 		530 m³/h
310 cfm 		640 m³/h
375 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 220 L/min
130 cfm 		415 m³/h
245 cfm 		830 m³/h
485 cfm 		1005 m³/h
590 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 140 L/min
80 cfm 		260 m³/h
155 cfm 		525 m³/h
305 cfm 		635 m³/h
370 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 180 L/min
105 cfm 		240 m³/h
140 cfm 		485 m³/h
285 cfm 		590 m³/h
345 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 135 L/min
80 cfm 		250 m³/h
145 cfm 		505 m³/h
295 cfm 		610 m³/h
360 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 140 L/min
80 cfm 		260 m³/h
150 cfm 		520 m³/h
305 cfm 		630 m³/h
370 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 85 L/min
50 cfm 		155 m³/h
90 cfm 		310 m³/h
185 cfm 		380 m³/h
220 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 42.4 mm
1.67 in 		36 mm
1.41 in 		18.7 in Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site. 10.83 in 9.2 in 6.5 in 140 mm 100 mm 4 x 18 R 1-1/4 in. 42.4 mm
1.67 in 		36.0 mm
1.41 in 		18.7 Inch
475 mm 		Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! 10.8 in
275 mm 		7.3 in
186.9 mm 		6.5 in
165.7 mm 		0.9 in
25 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 1524 VA 520 Flow Meter with R 1-1/2 Inch (in) Connection Thread and Stainless Steel 1.4404 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4404
1-1/2 in 		Any 195 L/min
115 cfm 		365 m³/h
215 cfm 		730 m³/h
430 cfm 		885 m³/h
520 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 305 L/min
180 cfm 		570 m³/h
335 cfm 		1140 m³/h
670 cfm 		1385 m³/h
815 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 195 L/min
115 cfm 		360 m³/h
210 cfm 		720 m³/h
425 cfm 		875 m³/h
515 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 295 L/min
175 cfm 		335 m³/h
195 cfm 		670 m³/h
395 cfm 		815 m³/h
475 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 185 L/min
110 cfm 		345 m³/h
205 cfm 		695 m³/h
410 cfm 		845 m³/h
495 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 190 L/min
110 cfm 		355 m³/h
210 cfm 		715 m³/h
420 cfm 		865 m³/h
510 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 115 L/min
65 cfm 		215 m³/h
125 cfm 		430 m³/h
250 cfm 		520 m³/h
305 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 48.3 mm
1.9 in 		41.9 mm
1.65 in 		18.7 in Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site. 10.83 in 9.4 in 6.5 in 150 mm 110 mm 4 x 18 R 1-1/2 in. 48.3 mm
1.90 in 		41.9 mm
1.65 in 		18.7 Inch
475 mm 		Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! 10.8 in
275 mm 		7.3 in
186.9 mm 		6.5 in
165.7 mm 		0.9 in
25 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 1525 VA 520 Flow Meter with R 2 Inch (in) Connection Thread and Stainless Steel 1.4404 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4404
2 in 		Any 320 L/min
190 cfm 		600 m³/h
350 cfm 		1195 m³/h
700 cfm 		1450 m³/h
850 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 505 L/min
295 cfm 		935 m³/h
550 cfm 		1870 m³/h
1100 cfm 		2265 m³/h
1330 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 320 L/min
185 cfm 		590 m³/h
345 cfm 		1185 m³/h
695 cfm 		1430 m³/h
840 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 505 L/min
300 cfm 		550 m³/h
320 cfm 		1100 m³/h
645 cfm 		1330 m³/h
780 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 305 L/min
180 cfm 		570 m³/h
335 cfm 		1140 m³/h
670 cfm 		1380 m³/h
810 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 315 L/min
185 cfm 		585 m³/h
345 cfm 		1170 m³/h
690 cfm 		1420 m³/h
835 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 190 L/min
110 cfm 		355 m³/h
205 cfm 		705 m³/h
415 cfm 		855 m³/h
500 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 60.3 mm
2.37 in 		53.1 mm
2.09 in 		18.7 in Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site. 10.83 in 9.7 in 6.5 in 165 mm 125 mm 4 x 18 R 2 in. 60.3 mm
2.37 in 		53.1 mm
2.09 in 		18.7 Inch
475 mm 		Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! 10.8 in
275 mm 		7.7 in
195.9 mm 		6.5 in
165.7 mm 		1.1 in
30 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 0520 VA 520 Flow Meter with R 1/4 Inch (in) Connection Thread and Stainless Steel 1.4301 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4301 Any 25 L/min
0.9 cfm 		50 m³/h
1.8 cfm 		105 m³/h
3.6 cfm 		130 m³/h
4.5 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 45 L/min
1.5 cfm 		85 m³/h
3 cfm 		170 m³/h
6 cfm 		205 m³/h
7.2 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 25 L/min
0.9 cfm 		50 m³/h
1.8 cfm 		105 m³/h
3.6 cfm 		130 m³/h
4.5 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 25 L/min
0.9 cfm 		50 m³/h
1.5 cfm 		100 m³/h
3.3 cfm 		120 m³/h
4.2 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 25 L/min
0.9 cfm 		50 m³/h
1.8 cfm 		100 m³/h
3.6 cfm 		125 m³/h
4.2 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 25 L/min
0.9 cfm 		50 m³/h
1.8 cfm 		105 m³/h
3.6 cfm 		125 m³/h
4.5 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 15 L/min
0.6 cfm 		30 m³/h
0.9 cfm 		60 m³/h
2.1 cfm 		75 m³/h
2.7 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A R 1/4 in. 13.7 mm
0.54 in 		8.9 mm
0.35 in 		7.6 Inch
194 mm 		N/A 5.3 in
137 mm 		6.8 in
174.7 mm 		6.5 in
165.7 mm 		0.5 in
15 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 0527 VA 520 Flow Meter with R 3/8 Inch (in) Connection Thread and Stainless Steel 1.4301 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4301 Any 225 nL/min
8 cfm 		25 m³/h
14.7 cfm 		50 m³/h
29.4 cfm 		60 m³/h
35.3 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 330 nL/min
11.7 cfm 		35 m³/h
20.5 cfm 		75 m³/h
44.1 cfm 		95 m³/h
55.9 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 225 nL/min
7.9 cfm 		25 m³/h
14.7 cfm 		50 m³/h
29.4 cfm 		60 m³/h
35.3 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 205 nL/min
7.2 cfm 		20 m³/h
11.7 cfm 		45 m³/h
26.4 cfm 		55 m³/h
32.3 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 215 nL/min
7.5 cfm 		20 m³/h
11.7 cfm 		45 m³/h
26.4 cfm 		55 m³/h
32.3 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 220 nL/min
7.7 cfm 		20 m³/h
11.7 cfm 		45 m³/h
26.4 cfm 		60 m³/h
35.3 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 130 nL/min
4.5 cfm 		14 m³/h
8.8 cfm 		25 m³/h
14.7 cfm 		35 m³/h
20.5 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A R 3/8 in. 17.2 mm
0.68 in 		12.5 mm
0.49 in 		11.8 Inch
300 mm 		N/A 7.9 in
200 mm 		6.9 in
175 mm 		6.5 in
165.7 mm 		0.5 in
15 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 0521 VA 520 Flow Meter with R 1/2 Inch (in) Connection Thread and Stainless Steel 1.4301 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4301
1/2 in 		Any 20 L/min
14 cfm 		45 m³/h
25 cfm 		90 m³/h
50 cfm 		110 m³/h
60 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 35 L/min
20 cfm 		70 m³/h
40 cfm 		140 m³/h
80 cfm 		170 m³/h
100 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 20 L/min
14 cfm 		45 m³/h
25 cfm 		90 m³/h
50 cfm 		105 m³/h
60 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 20 L/min
13 cfm 		40 m³/h
25 cfm 		80 m³/h
45 cfm 		100 m³/h
55 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 20 L/min
13 cfm 		40 m³/h
25 cfm 		85 m³/h
50 cfm 		105 m³/h
60 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 20 L/min
14 cfm 		40 m³/h
25 cfm 		85 m³/h
50 cfm 		105 m³/h
60 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 14.4 L/min
8 cfm 		25 m³/h
15 cfm 		50 m³/h
30 cfm 		65 m³/h
35 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 21.3 mm
0.84 in 		16.1 mm
0.63 in 		11.8 in N/A 8.27 in 8.3 in 6.5 in 95 mm 65 mm 4 x 14 R 1/2 in. 21.3 mm
0.84 in 		16.1 mm
0.63 in 		11.8 Inch
300 mm 		Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! 8.2 in
210 mm 		6.9 in
176.4 mm 		6.5 in
165.7 mm 		0.7 in
20 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 0522 VA 520 Flow Meter with R 3/4 Inch (in) Connection Thread and Stainless Steel 1.4301 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4301
3/4 in 		Any 45 L/min
25 cfm 		85 m³/h
50 cfm 		175 m³/h
100 cfm 		215 m³/h
125 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 75 L/min
40 cfm 		135 m³/h
80 cfm 		275 m³/h
160 cfm 		335 m³/h
195 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 45 L/min
25 cfm 		85 m³/h
50 cfm 		175 m³/h
100 cfm 		210 m³/h
125 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 70 L/min
40 cfm 		80 m³/h
45 cfm 		160 m³/h
95 cfm 		195 m³/h
115 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 45 L/min
25 cfm 		80 m³/h
45 cfm 		165 m³/h
95 cfm 		205 m³/h
120 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 45 L/min
25 cfm 		85 m³/h
50 cfm 		170 m³/h
100 cfm 		210 m³/h
120 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 25 L/min
15 cfm 		50 m³/h
30 cfm 		105 m³/h
60 cfm 		125 m³/h
70 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 26.9 mm
1.06 in 		21.7 mm
0.85 in 		18.7 in Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site. 10.83 in 8.5 in 6.5 in 105 mm 75 mm 4 x 14 R 3/4 in. 26.9 mm
1.06 in 		21.7 mm
0.85 in 		18.7 Inch
475 mm 		Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! 10.8 in
275 mm 		7.0 in
179.2 mm 		6.5 in
165.7 mm 		0.7 in
20 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 0523 VA 520 Flow Meter with R 1 Inch (in) Connection Thread and Stainless Steel 1.4301 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4301
1 in 		Any 75 L/min
45 cfm 		145 m³/h
85 cfm 		290 m³/h
170 cfm 		355 m³/h
210 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 120 L/min
70 cfm 		230 m³/h
135 cfm 		460 m³/h
270 cfm 		555 m³/h
325 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 75 L/min
45 cfm 		145 m³/h
85 cfm 		290 m³/h
170 cfm 		350 m³/h
205 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 130 L/min
75 cfm 		135 m³/h
75 cfm 		270 m³/h
155 cfm 		325 m³/h
190 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 75 L/min
40 cfm 		140 m³/h
80 cfm 		280 m³/h
165 cfm 		340 m³/h
200 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 75 L/min
45 cfm 		140 m³/h
85 cfm 		285 m³/h
170 cfm 		345 m³/h
205 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 45 L/min
25 cfm 		85 m³/h
50 cfm 		170 m³/h
100 cfm 		210 m³/h
120 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 33.7 mm
1.34 in 		27.3 mm
1.07 in 		18.7 in Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site. 10.83 in 8.7 in 6.5 in 115 mm 85 mm 4 x 14 R 1 in. 33.7 mm
1.34 in 		27.3 mm
1.07 in 		18.7 Inch
475 mm 		Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! 10.8 in
275 mm 		7.1 in
182.6 mm 		6.5 in
165.7 mm 		0.9 in
25 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 0526 VA 520 Flow Meter with R 1-1/4 Inch (in) Connection Thread and Stainless Steel 1.4301 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4301
1-1/4 in 		Any 140 L/min
80 cfm 		265 m³/h
155 cfm 		530 m³/h
310 cfm 		640 m³/h
375 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 220 L/min
130 cfm 		415 m³/h
245 cfm 		830 m³/h
485 cfm 		1005 m³/h
590 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 140 L/min
80 cfm 		260 m³/h
155 cfm 		525 m³/h
305 cfm 		635 m³/h
370 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 180 L/min
105 cfm 		240 m³/h
140 cfm 		485 m³/h
285 cfm 		590 m³/h
345 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 135 L/min
80 cfm 		250 m³/h
145 cfm 		505 m³/h
295 cfm 		610 m³/h
360 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 140 L/min
80 cfm 		260 m³/h
150 cfm 		520 m³/h
305 cfm 		630 m³/h
370 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 85 L/min
50 cfm 		155 m³/h
90 cfm 		310 m³/h
185 cfm 		380 m³/h
220 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 42.4 mm
1.67 in 		36 mm
1.41 in 		18.7 in Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site. 10.83 in 9.2 in 6.5 in 140 mm 100 mm 4 x 18 R 1-1/4 in. 42.4 mm
1.67 in 		36.0 mm
1.41 in 		18.7 Inch
475 mm 		Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! 10.8 in
275 mm 		7.3 in
186.9 mm 		6.5 in
165.7 mm 		0.9 in
25 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 0524 VA 520 Flow Meter with R 1-1/2 Inch (in) Connection Thread and Stainless Steel 1.4301 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4301
1-1/2 in 		Any 195 L/min
115 cfm 		365 m³/h
215 cfm 		730 m³/h
430 cfm 		885 m³/h
520 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 305 L/min
180 cfm 		570 m³/h
335 cfm 		1140 m³/h
670 cfm 		1385 m³/h
815 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 195 L/min
115 cfm 		360 m³/h
210 cfm 		720 m³/h
425 cfm 		875 m³/h
515 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 295 L/min
175 cfm 		335 m³/h
195 cfm 		670 m³/h
395 cfm 		815 m³/h
475 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 185 L/min
110 cfm 		345 m³/h
205 cfm 		695 m³/h
410 cfm 		845 m³/h
495 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 190 L/min
110 cfm 		355 m³/h
210 cfm 		715 m³/h
420 cfm 		865 m³/h
510 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 115 L/min
65 cfm 		215 m³/h
125 cfm 		430 m³/h
250 cfm 		520 m³/h
305 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 48.3 mm
1.9 in 		41.9 mm
1.65 in 		18.7 in Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site. 10.83 in 9.4 in 6.5 in 150 mm 110 mm 4 x 18 R 1-1/2 in. 48.3 mm
1.90 in 		41.9 mm
1.65 in 		18.7 Inch
475 mm 		Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! 10.8 in
275 mm 		7.3 in
186.9 mm 		6.5 in
165.7 mm 		0.9 in
25 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
0695 0525 VA 520 Flow Meter with R 2 Inch (in) Connection Thread and Stainless Steel 1.4301 Measuring Section m³/h, CFM (1000 mbar, 20 ºC) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0ºC) In Case of Gases CFM
ft/min
g/s
kg/h
kg/min
L/s
lb/h
lb/min
m/s
m³/h
m³/min 		Thermal Mass Flow Sensor Air
Gases 		Air
Argon
CO2
Nitrogen
Oxygen 		± 1.5% of Measured Value (M.V.)
± 0.3% of Full Scale (F.S.) 		± 0.3% of Full Scale (F.S.)
± 1% of Measured Value (M.V.) 		-22 to 176 ºF -25 to 349 ºF -1 to 232 psi Up to Nominal Pressure (PN) 40 (Modbus-RTU), Optional: Ethernet interface PoE)
M-Bus
RS 485 Interface 		4 to 20 mA 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 		18 to 36 V 5 W < 500 Ω Polycarbonate Ingress Protection (IP 65) Stainless Steel 1.4301
2 in 		Any 320 L/min
190 cfm 		600 m³/h
350 cfm 		1195 m³/h
700 cfm 		1450 m³/h
850 cfm 		Reference conditions DIN 1945 / ISO 1217: 68 ºF, 14 psi 505 L/min
295 cfm 		935 m³/h
550 cfm 		1870 m³/h
1100 cfm 		2265 m³/h
1330 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 320 L/min
185 cfm 		590 m³/h
345 cfm 		1185 m³/h
695 cfm 		1430 m³/h
840 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 505 L/min
300 cfm 		550 m³/h
320 cfm 		1100 m³/h
645 cfm 		1330 m³/h
780 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 305 L/min
180 cfm 		570 m³/h
335 cfm 		1140 m³/h
670 cfm 		1380 m³/h
810 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 315 L/min
185 cfm 		585 m³/h
345 cfm 		1170 m³/h
690 cfm 		1420 m³/h
835 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 190 L/min
110 cfm 		355 m³/h
205 cfm 		705 m³/h
415 cfm 		855 m³/h
500 cfm 		Setting to DIN 1343: 32 ºF, 14.7 psi 60.3 mm
2.37 in 		53.1 mm
2.09 in 		18.7 in Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site. 10.83 in 9.7 in 6.5 in 165 mm 125 mm 4 x 18 R 2 in. 60.3 mm
2.37 in 		53.1 mm
2.09 in 		18.7 Inch
475 mm 		Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! 10.8 in
275 mm 		7.7 in
195.9 mm 		6.5 in
165.7 mm 		1.1 in
30 mm 		There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Reset counter reading
  • Select units
  • Zero-point adjustment, leak flow volume suppression
 		Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow.
A meter reading is available for each flow direction.
  • 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
 		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.
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