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OMEGA AIR OS430 Installation And Operating Manual

Pitot tube flow meter for wet air (insertion)
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Installation and operating
manual
OS430
Pitot Tube Flow Meter for Wet Air
(Insertion)
Please read the following instructions carefully before installing the product. Trouble free and
safe operating of the product can only be guaranteed if recommendations and conditions stated
in this manual are respected.

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Summary of Contents for OMEGA AIR OS430

  • Page 1 Installation and operating manual OS430 Pitot Tube Flow Meter for Wet Air (Insertion) Please read the following instructions carefully before installing the product. Trouble free and safe operating of the product can only be guaranteed if recommendations and conditions stated...

  • Page 2: Table Of Contents

    Pulse Connection Diagram .................... 28 10.3 Modbus Output ........................28 10.3.1 Modbus Parameters ...................... 28 10.3.2 Connect Modbus/RTU Devices to a Master ..............30 14.1 M-Bus Output ........................33 14.2 Connection between OS430 Outputs and Customer Equipment ......... 33 Calibration ..........................36 Maintenance..........................36...
  • Page 3 Disposal or Waste ........................36...

  • Page 4: Safety Instructions

    1 Safety Instructions Please check if this instruction manual matches the product type. Please observe all notes and instructions indicated in this manual. It contains essential information that must be observed before and during installation, operation, and maintenance. Therefore, this instruction manual must be read carefully by the technician and by the responsible user / qualified personnel.

  • Page 5: Registered Trademarks

    • The product should be maintained and calibrated frequently, at least annually. General safety instructions It is not allowed to use the product in explosive areas. • Please observe the national regulations before/during installation and • operation. Remarks It is not allowed to disassemble the product. •...

  • Page 6: Rf Exposure Information And Statement

    4 Application The OS430 Pitot Tube Flow Meter is designed to measure the consumption of compressed air and a variety of industrial gases in wet or high mass flow/velocity applications. The flow meter can even work in wet and dirty gases such as the outlet of a compressor.

  • Page 7: Features

    Remark: You can change units using the service App OS4C-FS or the optional flow meter display. The OS430 is mainly used in compressed air systems in the industrial environment. The OS430 is not designed for explosive areas. For the use in explosive areas, please consult the manufacturer. 5 Features •...

  • Page 8: Technical Data

    6 Technical Data 6.1 General Data FCC ID: 2ASK2-SUTO-004 Parameters Selectable flow: Volumetric Flow, Actual Flow, Dry Air Flow, Free Air Delivery (FAD), Mass Flow Consumption * Velocity (working condition) Medium temperature Medium pressure Selectable units Volumetric Flow: /h, Sm /min, Sl/min, Sl/s, Scfm Mass flow: kg/h, kg/min, kg/s, t/h, lb/h...

  • Page 9: Electrical Data

    Tube diameter 1.25” to 10” (greater diameters on request) Screwing thread G 3/4” (ISO 228/1) Weight 1.12 kg * The total consumption value is saved to the permanent memory every 5 minutes. If within these 5 minutes the device is powered off, it will restore the last consumption value which was saved in the last cycle.

  • Page 10: Dimensional Drawing

    8 Installation Before you install the flow meter, make sure that all components listed below are included in your package. Qty Description Item No. OS430 Pitot Tube Flow Meter Sealing ring Alignment key Depending on orders: M12 plug or M12 cable...

  • Page 11: Installation Considerations

    • The diameter of the nozzle must be ≥ 18 mm. Otherwise the shaft cannot be inserted in. 8.2 Installation Considerations To achieve and maintain the accuracy stated in the technical data, the flow meter must be inserted in a straight pipe section with unhindered flow characteristics.
  • Page 12 • The length of inlet and outlet sections depicted below are minimum requirement; longer inlet sections are preferable. That is, if it is possible to achieve a longer straight inlet section than the minimum specified during installation, this is preferable.
  • Page 13 Expansion Reduction 90° Bend 2×90° Bend Three-dimensional Bend T-piece Shut-off valve Filter or similar (unknown objects)

  • Page 14: Insertion Angles

    Please install the flow meter only in the recommended area. Insertion into a vertical pipe As shown in the left figure, the OS430 can be installed in a vertical pipe when the following two conditions are met: • The flow direction is from bottom to top.

  • Page 15: Determine The Insertion Depth

    8.3 Determine the Insertion Depth Generally, you must insert the sensor tip in the center of the pipe with the help of the flow meter shaft that has a scale engraved. To determine the right position, calculate the insertion depth as described below. 8.3.1 Center Installation Center installation is the default and recommended installation type.

  • Page 16: Install The Flow Meter

    8.4 Install the Flow Meter This section describes how to install OS430. First please observe the flow direction sign indicated on the flow meter head or on the shaft. It must match the flow direction of the compressed air or gas.
  • Page 17 1. Close the ball valve. 2. Move the connection head to keep the flow meter tip completely covered by the connection thread (see photo on the left). 3. Embed the O-shaped sealing ring to the groove in the connection head. 4.

  • Page 18: Perform The Zero Flow Calibration

    Maximum angle deviation of a proper installation: Figure 1: Top view 8.5 Perform the Zero Flow Calibration The zero-flow calibration is a compulsory operation for the flow meter installation. Use one of the following methods to perform the calibration: • Service App OS4C-FS •...

  • Page 19: Remove The Flow Meter

    8.6 Remove the Flow Meter WARNING! Removing flow meters under pressure can be dangerous! Be aware that the flow meter can be shot out of the ball valve if you do not carefully follow the steps described below! For your information: The flow meter is exposed to a force of 18 kg at the 8-bar(g) system pressure;...
  • Page 20 A1063 M-Bus A = M12 (5-pin); B = M12 5-pin A1424 Modbus/TCP A = M12 (5-pin); B = M12 8-pin X-coded General connection pins, male Ethernet connection pins, male (View onto the flow meter connector) (View onto the flow meter connector) Pin assignment –...

  • Page 21: Ethernet Connection

    ATTENTION! Do not screw the M12 connector using force. Otherwise it might damage the connection pins. 8.7.2 Ethernet Connection The device can be powered in the following ways: Using connector A. • Using the PoE function, which is integrated into the Ethernet connection •...

  • Page 22: Configuration

    Tx- / +V / -V Orange (O) Rx+ / -V / +V White-Green (W-G) Pair 3 Rx- / -V / +V Green (G) NA / -V White-Brown (W-BR) Pair 4 NA / -V Brown (BR) NA/ +V White-Blue (W-BL) Pair 1 NA/ +V Blue (BL) 9 Configuration...

  • Page 23: Use Optional Display

    ATTENTION! Improper changes on the settings might lead to wrong measurement results! Contact the manufacturer if you are not familiar with the settings. 9.2 Use Optional Display If the flow meter comes with the display, you can use this display to view measurement values and configure the flow meter.
  • Page 24 Home screen Home screen: • Status bar • Moving bar to indicate flow and cut-off value Measuring values • Steps: 1. Press the Enter key (>3s). 2. Enter the unlock code:12 using the Up and Down keys, and then press Enter key. 3.

  • Page 25: Menu Map

    9.2.3 Menu Map...

  • Page 26: Signal Outputs

    Signal Outputs 10.1 Analog Output The flow meter can provide an analogue output with the range of 4...20 mA. This output can be scaled to match a desired measuring range. Standard is the range from 0 to max. The corresponding flow ranges to different pipe sizes can be found in section 6.5.

  • Page 27: Pulse Output

    If the flow rate is higher than 50 m /s, l/s of ft /s, the OS430 cannot output the pulses with default settings (one pulse per a consumption unit). In this case, you can set the pulse to 1 pulse per 10 consumption units or 1 pulse per 100 consumption units using by the OS4C-FS service app or a connected display.

  • Page 28: Pulse Connection Diagram

    10.2.1 Pulse Connection Diagram Using the isolated pulse switch (Connector B Pin 2 and 3) Variant 1: Variant 2: 10.3 Modbus Output 10.3.1 Modbus Parameters Communication parameters (Modbus/RTU) Baud rate 19200 Device address Last two digits of serial number Framing/parity/stop bit 8, N, 1 Response time 1 second...
  • Page 29 Response message that the device returns to the master: • Function code: 03 The information of the byte order is shown in the table below: Sequence Byte Data Order Type Byte 3 Byte 1 Byte 0 Byte 2 1-0-3-2 FLOAT (MMMMMMMM*) (MMMMMMMM *) (EMMMMMMM *)

  • Page 30: Bit Description

    4-Byte FLOAT Pressure 4-Byte FLOAT Velocity 4-Byte FLOAT Flow 4-Byte UINT32 Consumption 4-Byte FLOAT Reverse velocity 4-Byte FLOAT Reverse flow 4-Byte UINT32 Reverse consumption 4-Byte UINT32 System status 2100 4-Byte FLOAT Inner diameter (unit: mm) 2105 Reference temperature 4-Byte FLOAT (unit: °C) Reference pressure 2107...
  • Page 31 Modbus/RTU Cable Length A Modbus/RTU bus line has limitations which shall not be exceeded, otherwise the communication might not be stable. The maximum total bus length must not exceed 1200 m. • The stub length to each node must not exceed 30 cm. •...
  • Page 32 Daisy-Chain using RS-485 Splitter The company's devices with M12 connectors can be connected in a Modbus/RTU daisy-chain using a M12 RS-485 splitter. Furthermore, this allows to easily place the M12 termination resistor at the last splitter in the bus-chain. See below example for reference.

  • Page 33: M-Bus Output

    4-byte Pressure 4-byte M-Bus status 4-byte 14.2 Connection between OS430 Outputs and Customer Equipment This section provides figures to show how outputs supported by the OS430 connect with the customer equipment. In the following figures, the Instrument indicates the OS430.
  • Page 34 Isolated 4 ... 20 mA analog output Modbus/RTU output Passive pulse output M-Bus...
  • Page 35 Modbus/TCP output with PoE Class A Class B Modbus/TCP output with external power supply Class A...

  • Page 36: Calibration

    Class B Calibration The flow meter is calibrated before delivery. The calibration date is printed on the certificate which is shipped with the flow meter. The accuracy of the flow meter is regulated by the on-site conditions. Parameters such as oil, high humidity, or other impurities can affect the calibration and furthermore the accuracy.
  • Page 37 OMEGA AIR d.o.o. Ljubljana Cesta Dolomitskega odreda 10, 1000 Ljubljana, Slovenia T: +386 1 200 68 00 | info@omega-air.si www.omega-air.si...

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