Item # 0695 0523, VA 520 Flow Meter with R 1 Inch (in) Connection Thread and Stainless Steel 1.4301 Measuring Section On Compressed Air Systems, Inc.

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	Item # 0695 0523, VA 520 Flow Meter with R 1 Inch (in) Connection Thread and Stainless Steel 1.4301 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 1.4301 1 in

Mounting Position		Any

Low-Speed Air Flow (164 Feet (ft)/Sec (s))		75 L/min 45 cfm

Standard Air Flow (304 Feet (ft)/Sec (s))		145 m³/h 85 cfm

Maximum Air Flow (607 Feet (ft)/Sec (s))		290 m³/h 170 cfm

High-Speed Air Flow (735 Feet (ft)/Sec (s))		355 m³/h 210 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))		120 L/min 70 cfm

Standard Argon (Ar) Flow (304 Feet (ft)/Sec (s))		230 m³/h 135 cfm

Maximum Argon (Ar) Flow (607 Feet (ft)/Sec (s))		460 m³/h 270 cfm

High-Speed Argon (Ar) Flow (735 Feet (ft)/Sec (s))		555 m³/h 325 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))		75 L/min 45 cfm

Standard Carbon Dioxide (CO₂) Flow (304 Feet (ft)/Sec (s))		145 m³/h 85 cfm

Maximum Carbon Dioxide (CO₂) Flow (607 Feet (ft)/Sec (s))		290 m³/h 170 cfm

High-Speed Carbon Dioxide (CO₂) Flow (735 Feet (ft)/Sec (s))		350 m³/h 205 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))		130 L/min 75 cfm

Standard Nitrogen (N₂) Flow (304 Feet (ft)/Sec (s))		135 m³/h 75 cfm

Maximum Nitrogen (N₂) Flow (607 Feet (ft)/Sec (s))		270 m³/h 155 cfm

High-Speed Nitrogen (N₂) Flow (735 Feet (ft)/Sec (s))		325 m³/h 190 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))		75 L/min 40 cfm

Standard Oxygen (O₂) Flow (304 Feet (ft)/Sec (s))		140 m³/h 80 cfm

Maximum Oxygen (O₂) Flow (607 Feet (ft)/Sec (s))		280 m³/h 165 cfm

High-Speed Oxygen (O₂) Flow (735 Feet (ft)/Sec (s))		340 m³/h 200 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))		75 L/min 45 cfm

Standard Nitrous Oxide (N₂O) Flow (304 Feet (ft)/Sec (s))		140 m³/h 85 cfm

Maximum Nitrous Oxide (N₂O) Flow (607 Feet (ft)/Sec (s))		285 m³/h 170 cfm

High-Speed Nitrous Oxide (N₂O) Flow (735 Feet (ft)/Sec (s))		345 m³/h 205 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))		45 L/min 25 cfm

Standard Natural Gas (NG) Flow (304 Feet (ft)/Sec (s))		85 m³/h 50 cfm

Maximum Natural Gas (NG) Flow (607 Feet (ft)/Sec (s))		170 m³/h 100 cfm

High-Speed Natural Gas (NG) Flow (735 Feet (ft)/Sec (s))		210 m³/h 120 cfm

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

Flange Outer Pipe Diameter		33.7 mm 1.34 in

Flange Inner Pipe Diameter		27.3 mm 1.07 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)		8.7 in

Dimension H1 (Flange)		6.5 in

Diameter D (Flange)		115 mm

Diameter K (Flange)		85 mm

n x Diameter L (Flange)		4 x 14

Connection Thread		R 1 in.

Thread Outer Pipe Diameter		33.7 mm 1.34 in

Thread Inner Pipe Diameter		27.3 mm 1.07 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)		7.1 in 182.6 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.

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

Item # 0695 0523, VA 520 Flow Meter with R 1 Inch (in) Connection Thread and Stainless Steel 1.4301 Measuring Section

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

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