Item # 0695 0520, VA 520 Stainless Steel 1.4301 Flowmeter with R 1/4 Inch (in) Connection Thread On Compressed Air Systems, Inc.

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

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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.

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		Datasheet for VA 520 Inline Flowmeters (PDF, 971KB)

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

Approve Payments

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 (DC) Supply Voltage

Power Supply

Burden

Housing Material

Protection Rating

Material

Mounting Position

Dimension L (Thread)

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

Standard Air Flow (304 Feet Per Seconds (ft/s))

Maximum Air Flow (607 Feet Per Seconds (ft/s))

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

Note for Air Flow

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

Standard Argon (Ar) Flow (304 Feet Per Seconds (ft/s))

Maximum Argon (Ar) Flow (607 Feet Per Seconds (ft/s))

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

Note for Argon (Ar) Flow

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

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

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

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

Note for Carbon Dioxide (CO2) Flow

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

Standard Nitrogen (N2) Flow (304 Feet Per Seconds (ft/s))

Maximum Nitrogen (N2) Flow (607 Feet Per Seconds (ft/s))

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

Note for Nitrogen (N2) Flow

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

Standard Oxygen (O2) Flow (304 Feet Per Seconds (ft/s))

Maximum Oxygen (O2) Flow (607 Feet Per Seconds (ft/s))

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

Note for Oxygen (O2) Flow

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

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

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

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

Note for Nitrous Oxide (N2O) Flow

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

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

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

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

Note for Natural Gas (NG) Flow

Connection Thread

Thread Outer Pipe Diameter

Thread Inner Pipe Diameter

Dimension L1 (Thread)

Dimension H (Thread)

Dimension H1 (Thread)

Dimension A (Thread)

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

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

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

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

Note for Carbon Dioxide (CO₂) Flow

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

Standard Nitrogen (N₂) Flow (304 Feet Per Seconds (ft/s))

Maximum Nitrogen (N₂) Flow (607 Feet Per Seconds (ft/s))

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

Note for Nitrogen (N₂) Flow

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

Standard Oxygen (O₂) Flow (304 Feet Per Seconds (ft/s))

Maximum Oxygen (O₂) Flow (607 Feet Per Seconds (ft/s))

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

Note for Oxygen (O₂) Flow

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

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

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

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

Note for Nitrous Oxide (N₂O) Flow