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VA 570 is supplied with an integrated measuring section. The measuring sections are available in flanged version or with R resp. NPT thread.

A special feature is the removable measuring head. So the measuring unit can be removed easily and quickly for calibration or cleaning purposes without having to dismount the measuring section intricately. During this period the measuring section is sealed by a closing cap (accessory).
Unit of Measure

Financing

Approve Payments

 N/A Finance with Approve Payments

Specifications

Measuring Range

 N/A Up to 164 ft/s, Low-Speed Version Up to 304 ft/s, Standard Version Up to 607 ft/s, Maximum Version Up to 735 ft/s, High-Speed Version

Note for Measuring Range

 N/A All measured values related to DIN 1343 standard conditions 32 ºF and 14.7 psi ex works.

Accuracy

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

Accuracy on Request

 N/A ± 1.0% of Measured Value (M.V.) ± 0.3% of Full Scale (F.S.)

Accuracy Indications

 N/A Relative to Ambient Temperature 71.6 ºF +2 ºF, System Pressure 6 bar

Repeatability

 N/A 0.25% of Measured Value (M.V.) in Case of Correct Mounting (Mounting Aid, Position, Inlet Section)

Measuring Principle

 N/A Thermal Mass Flow Sensor

Response Time

 N/A t 90 <3 sec

Operating/Ambient Temperature Range

 N/A -4 to 158 ºF

Media Temperature Range

 N/A -4 to 356 ºF

Media Temperature Range (ATEX Version)

 N/A -4 to 248 ºF

Adjustment Possibilities via Display, External Hand- Held Device PI 500, PC Service Software, Remote Diagnosis

 N/A Nm³/h, Nm³/min, Nl/min, l/s, ft/min, cfm, kg/h, kg/min, inner diameter, reference conditions ºC/ºF, mbar/hPa, zero point correction, leak flow volume suppression, scaling analog output 4...20 mA, pulse/alarm, error codes etc.

Standard Outputs

 N/A 1 x 4 to 20 mA Analog Output (Electrically Not Isolated) Pulse Output RS 485 (Modbus-RTU)

Optional Outputs

 N/A 2 x 4 to 20 mA Active HART M-Bus Mod- bus TCP Profibus DP Profinet

Burden

 N/A <500 Ω

Additional Average Value Calculation

 N/A For all parameters freely adjustable from 1 minute up to 1 day, e. g. 1/2 hours average value, average day value

Protection Class

 N/A Ingress Protection (IP 64) for ATEX II 2D Ex tb IIIC T90°C Db Ingress Protection (IP 67)

Housing Material

 N/A Die-Cast Aluminum

Sensor Tube Material

 N/A Stainless Steel 1.4404

Operating Pressure

 N/A 232 psi

Special Version Operating Pressure

 N/A 580 psi

Direct Current (DC) Supply Voltage

 N/A 18 to 36 V

Power Supply

 N/A 5 W

Approval

 N/A ATEX II 2G Ex db IIC T4 Gb ATEX II 2D Ex tb IIIC T90 ºC Db DVGW

Measuring Range

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

 N/A 550 L/min325 ft³/min

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

 N/A 1025 m³/h600 ft³/min

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

 N/A 2050 m³/h1205 ft³/min

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

 N/A 2480 m³/h1460 ft³/min

Note for Air Flow

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

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

 N/A 865 L/min510 ft³/min

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

 N/A 1605 m³/h945 ft³/min

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

 N/A 3205 m³/h1885 ft³/min

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

 N/A 3880 m³/h2285 ft³/min

Note for Argon (Ar) Flow

 N/A Setting to DIN 1343: 32 ºF, 14.7 psi

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

 N/A 545 L/min320 ft³/min

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

 N/A 1015 m³/h595 ft³/min

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

 N/A 2030 m³/h1190 ft³/min

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

 N/A 2455 m³/h1445 ft³/min

Note for Carbon Dioxide (CO2) Flow

 N/A Setting to DIN 1343: 32 ºF, 14.7 psi

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

 N/A 505 L/min300 ft³/min

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

 N/A 945 m³/h555 ft³/min

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

 N/A 1885 m³/h1110 ft³/min

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

 N/A 2280 m³/h1340 ft³/min

Note for Nitrogen (N2) Flow

 N/A Setting to DIN 1343: 32 ºF, 14.7 psi

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

 N/A 525 L/min310 ft³/min

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

 N/A 980 m³/h575 ft³/min

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

 N/A 1955 m³/h1150 ft³/min

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

 N/A 2365 m³/h1390 ft³/min

Note for Oxygen (O2) Flow

 N/A Setting to DIN 1343: 32 ºF, 14.7 psi

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

 N/A 540 L/min320 ft³/min

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

 N/A 1005 m³/h590 ft³/min

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

 N/A 2010 m³/h1180 ft³/min

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

 N/A 2435 m³/h1430 ft³/min

Note for Nitrous Oxide (N2O) Flow

 N/A Setting to DIN 1343: 32 ºF, 14.7 psi

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

 N/A 325 L/min190 ft³/min

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

 N/A 605 m³/h355 ft³/min

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

 N/A 1210 m³/h710 ft³/min

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

 N/A 1465 m³/h865 ft³/min

Note for Natural Gas (NG) Flow

 N/A Setting to DIN 1343: 32 ºF, 14.7 psi

Flange

Flange Pipe Size

 N/A 2-1/2 in

Flange Outer Pipe Diameter

 N/A 76.1 mm

Flange Inner Pipe Diameter

 N/A 68.9 mm

Dimension L (Flange)

 N/A 18.7 in

Note for Dimension L (Flange)

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

Dimension L1 (Flange)

 N/A 10.83 in

Dimension H (Flange)

 N/A 12.6 in

Dimension H1 (Flange)

 N/A 8.98 in

Diameter D (Flange)

 N/A 185 mm

Diameter K (Flange)

 N/A 145 mm

Number of Diameter L (Flange)

 N/A 8

Diameter L (Flange)

 N/A 18 mm

Connection to Different Bus Systems Options

Connection to Different Bus Systems Options

 N/A There are different options available for connection to modern Bus systems:
  • Ethernet interface (Modbus-TCP) / PoE
  • M-BUS
  • Modbus-RTU
  • Profibus DP interface (in process)
  • Profinet interface (in process)
  • HART (in process)

Special Measurement Technology Features

Special Measurement Technology Features

 N/A
  • 4 values on the display: Flow, total consumption, velocity, temperature. Units freely adjustable
  • All measured values, settings such as gas type, inner diameter, serial number and so on can be accessed via Modbus-RTU
  • Comprehensive diagnostic functions readable on the display or remote access via Modbus such as calibration cycle, error codes, serial number
  • Notification in case of exceeding the calibration cycle
  • Standard version accuracy 1.5% of m.v. ± 0.3% of f.s.
  • Precision version accuracy 1.0% of m.v. ± 0.3% of f.s
  • Measuring span of 1 : 1000 (0.33 ft/s up to 735 ft/s)
  • Configuration and diagnosis via display, hand-held device PI 500, PC service software on-site
  • Gas type (air, nitrogen, oxygen, argon and so on) freely adjustable via PC service software or external device DS 400, DS 500, PI 500
  • Reference conditions ºC and PST / hPA freely adjustable
  • In-Situ adjustment, leak flow volume suppression
  • Pressure loss negligible

Special Mechanical Features

Special Mechanical Features

 N/A
  • Robust impact-proof aluminum die cast housing for the outdoor area IP 67
  • All wetted parts made from stainless steel 1.4404
  • On request with DVGW approval for natural gas (up to 232 psi)
  • Pressure range up to 232 psi, special version up to 580 psi
  • Media temperature range up to 356 ºF (ATEX version up to 248 ºF)
  • No moveable parts, no wear
  • Sensor tip very robust, easy to clean
  • Housing rotatable, display rotatable by -356 ºF

Additional Information

N/A The screwing with a centring device is designed such that the sensor is positioned accurately in the center when screwing it into the measuring section; furthermore, it enables an exact positioning in the flow direction. This eliminates unnecessary measuring faults.