Compressed Air Systems, Inc.
9303 Stannum Street
Tampa, FL 33619-2658

Toll Free: 855.979.8312
Phone: 813.626.8177
Fax: 813.628.0187
Email: [email protected]
Website: www.compressedairsystems.com
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Flow sensor for installation in existing compressed air or gas line of 3/4" to 40"

Housing rotatable, display 180º rotatable (on the head). Settings can be modified via display, flow meter can be reset
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 Measuring range SCFM for different pipe diameters and gases
All measured values related to DIN 1343 standard conditions 0º and 1013 mbar 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 87 psi

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 T90ºC Db Ingress Protection (IP 67)

Housing Material

 N/A Die-Cast Aluminum

Sensor Tube Material

 N/A Stainless Steel 1.4404

Screw-In Thread

 N/A G 1/2 in. (International Organization for Standardization (ISO 228)) National Pipe Thread (NPT) 1/2 in. PT 1/2 in. R 1/2 in.

Operating Pressure

 N/A 232 psi
Special Version Operating Pressure1 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

Advantages of Optical Keys

Advantages of Optical Keys

 N/A The sensor can also be configured in the ATEX area, without the housing needing to be opened.

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 ºF and mbar/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 1.4571
  • Suitable as an insertion version for 3/4" to 40"
  • On request with DVGW approval for natural gas (up to 232 psi)
  • Pressure range up to 725 psi, special version up to 1450 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
  • Easy installation and removal under pressure via 1/2" ball valve
  • Housing rotatable, display rotatable by 180º
  • Safety ring for installation and removal under pressure
  • Depth scale for precise installation

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)

Additional Information

N/A Easy mounting/dismounting of VA 550 under pressure - without disconnection of the line - without emptying the line

If there is no suitable measuring site with 1/2" ball valve, there are two simple possibilities to set up a measuring site:
A Weld on a 1/2" screw neck and screw on a 1/2" ball valve
B Mount spot drilling collar including ball valve
By means of the drilling jig, it is possible to drill under pressure through the 1/2" ball valve into the existing pipe. The drilling chips are collected in a filter.
Then the probe can be mounted.

  • 1 With DVGW approval max. 232 psi