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AFLOWT BUF M Operation Manual

Battery powered ultrasonic flow meter
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BATTERY POWERED
ULTRASONIC FLOW METER
AFLOWT BUF M
VERSION
BUF-310
OPERATION MANUAL
ISO 9001:2015

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Summary of Contents for AFLOWT BUF M

  • Page 1 BATTERY POWERED ULTRASONIC FLOW METER AFLOWT BUF M VERSION BUF-310 OPERATION MANUAL ISO 9001:2015...
  • Page 2 * * * Manufacturer quality management system is certified to ISO 9001:2015 * * * URL: http://www.aflowt.com...

  • Page 3: Table Of Contents

    4.3. Operating procedure ................29 5. READING DATA WITH A SMARTPHONE ............30 5.1. Hardware requirements ............... 30 5.2. Installing the AFLOWT BUF monitor application ........30 5.3. Connecting to the flow meter ............... 32 5.4. Reading parameters ................33 5.5.

  • Page 4: Introduction

    INTRODUCTION This document covers battery powered ultrasonic flow meter "AFLOWT BUF M" of BUF-310 version and contains the information about its design, operation and installation. Due to continuous improvement of product policy actual flow meter’s specifications may differ from the data specified in this manual. However, this will not affect the metrological characteristics and functionality.

  • Page 5: Description And Operation

    1. DESCRIPTION AND OPERATION 1.1. Application 1.1.1. AFLOWT BUF M battery powered ultrasonic flow meter of BUF-310 ver- sion is designed to measure average volumetric flow rate and volume of bidirectional flows of cold water. The flow meters may be used as part of metering systems and com- plexes, in heat metering systems, automatic process control systems in power industry and municipal, etc.

  • Page 6: Specifications

    1.2 Specifications 1.2.1. Specifications of the flow meter AFLOWT BUF M of BUF-310 version are listed in Table 1. Table 1 Parameter Value Notes 1. Nominal diameter of the pipeline, DN 2. Minimal measured average volumetric flow rate 0.25 3. Maximal measured average volumetric flow rate 90.0...

  • Page 7: Metrological Characteristics

    - Atmospheric pressure ranges from 84.0 to 106.7 kPa. The degree of protection of the flow meter corresponds to the IP67 or IP68. The required degree of protection of the device is determined when ordering. 1.2.6. The power supply of the flow meter is provided from an internal lithium C size battery with a nominal voltage of 3.6 V.

  • Page 8: Contents Of The Delivery Package

    3. Operating documentation and order sheets for this product and other products are available on: www.aflowt.com. 4. To connect the device with external devices via RS-485 interface, it is possible to supply a USB signal adapter – RS-232 / RS-485 on request.

  • Page 9: Design And Operation

    1.5. Design and operation 1.5.1. Operation principle 1.5.1.1. The flow meter is designed on the base of a pulse-phase method of ul- trasonic flow measurement. Its operation principle is based on measuring the time difference between the time it takes for an ultrasonic signal (USS) to travel through the liquid with the direction of flow and against it.

  • Page 10: Design

    1.5.2. Design The block diagram of flow meter AFLOWT BUF M of BUF-310 ver- sion is shown in Fig.3. Fig.3. Block diagram of flow meter The BUF-310 flow meter consists of a primary converter (CP) and a secondary converter. The primary flow converter is a pipeline section (pipe section with pipe connections for PEA installation and flanges for pipe connection) with two PEAs installed on it (Fig.A.1 of Appendix A).

  • Page 11: Access Levels

    Before commissioning, the flow meter is set up using a personal computer (PC) via RS-485 interface. 1.5.3. Access levels 1.5.3.1. The flow meter has three levels of access to setting and calibration pa- rameters. The access levels differ in the information displayed, possibilities to change the setting and calibration parameters of the flow meter and are referred to as WORK, SERVICE and ADJUSTMENT modes.

  • Page 12: Recording Of Operation Results

    c) Operation parameters: - Signal processing characteristics (median averaging, arithmetic averag- ing, etc.) - Communication parameters via RS-485 interface - Types of emergency situations. The WORK mode allows the user to change communication param- eters via RS-485 interface (network address of the device, exchange rate from 1200 to 4800 baud).

  • Page 13: Information Output

    - Worktime – operating time for the archiving interval. 1.5.4.2. Changes in the operating mode of the device are recorded in the mode log, which can contain up to 1000 records. Each mode log entry records: - Sequence number of the record - Name of the set operating mode of the device - Date and time of mode setting.
  • Page 14 NOTE. Using the optical button in the flow meters has the following features: - The button works "slowly", i.e. its touching should last more than 1 s - The button is triggered when the finger is taken off. 1.5.5.2. RS-485 interface RS-485 serial interface allows to read out measuring, archival, instal- lation and diagnostic information, to modify setting parameters.
  • Page 15 1.5.5.5. Universal output The flow meter has a non-isolated universal output that can operate in frequency, pulse and logic modes. The functions of the universal output, operating modes, output pa- rameters and output disconnection are defined by the software settings. The diagram of the output terminal stage and the description of its operation are given in Appendix B.

  • Page 16: Flow Meter Design

    1.5.5.6. Logic output The flow meter has a non-isolated logic output. Operation modes, parameters and electrical characteristics of the logic output are similar to those of the operation modes, parameters and electrical characteristics of the universal output in the logic mode. 1.6.

  • Page 17: Intended Use

    2. INTENDED USE 2.1. Operational restrictions 2.1.1. The flow meter should be operated under the conditions of influencing factors and parameters of the controlled medium, which do not exceed the permissible values specified in the operating documentation. 2.1.2. The flow meter can be installed in vertical, horizontal or inclined piping. 2.1.3.

  • Page 18: Safety Measures

    2.2. Safety measures 2.2.1. The flow meter can be operated by the personnel who have studied the documentation for the product. 2.2.2. When operating the flow meter, dangerous factors are: - Pressure in the pipeline (up to 1.6 MPa) - Other dangerous factors related to the nature and characteristics of the facility where the flow meter is operated.

  • Page 19: Installation Of The Flow Meter

    3. INSTALLATION OF THE FLOW METER 3.1. Transportation The flow meter must be transported to the installation site in its orig- inal packaging. After transportation to the place of installation at a negative temper- ature and introduction into the room with a positive temperature, the flow meter should be kept in the package at least 3 hours to avoid moisture condensation.

  • Page 20: Requirements For The Length Of Straight Sections

    pipe axis) be positioned at an angle of  = 45-90 to the vertical plane (Fig.5). Fig.5. Recommended PEA positions when installing the flow meter 3.3. Requirements for the length of straight sections 3.3.1. If there are hydraulic resistances at the installation site, normal operation of the flow meter is provided by straight sections of the pipeline before the first and after the last one PEA in the stream.

  • Page 21: Electrical Installation Of The Flow Meter

    WARNING: Do not drop or hit the flow meter during installation. It may result in damage to the installed PEA or SMC. NEVER remove the PEA from the mounting nozzles. 3.5. Electrical installation of the flow meter 3.5.1. The communication cable of the flow meter is connected to the SMC in the manufacturer.

  • Page 22: Dismantling The Flow Meter

    WARNING: The manufacturer SHALL NOT BE LIABLE UNDER WARRANTY for failure to meet the requirements for the declared degree of protection and for leaks through the cable gland. 3.6. Dismantling the flow meter When dismantling the flow meter: - Shut off the liquid supply, make sure that there is no pressure in the pipe- line and drain the liquid - Disconnect the communication cable suitable for the SMC - Remove the flow meter.

  • Page 23: Operation

    The UB- Viewer ModBus menu bar appears on the monitor. Open the "AFLOWT BUF M (310).vpr" file, and the Monitor BUF (310) application window will be displayed (Fig.7). Fig.7. View of the Monitor BUF (310) application window The Monitor BUF (310) application window interface consists of seven tabs divided by function.
  • Page 24 - The number of the PC COM port to which the signal adapter is connected - Baud rate (4800 bps). Other setting parameters are loaded automatically. Fig.8. View of the Data link setting window To set up communication with the flow meter, press the button in the upper left corner of the application window (Fig.7).
  • Page 25 You can adjust the device time, set up communication parameters via the interface, reset archives and volumes, and set the mode of tran- sition to "winter"/"summer" time on the System tab. 4.1.3. You can set the USS processing parameters, set the LCD contrast value and operating time and select the measured flow rate dimension on the Service tab (Fig.10).
  • Page 26 b) Pulse mode c) Logic mode Fig. 11. Configuration parameters for different universal output modes Configuration parameters of the logic output operation are contained in the additional tab Logic output, which has the same appearance as shown in Fig.11.c. 4.1.4. The information contained in the USS Settings tab is displayed only in the SERVICE and ADJUSTMENT operating modes and is only available for editing in the ADJUSTMENT mode.
  • Page 27 Fig.12. View of the Flow Data tab 4.1.5. The current state of the flow meter (presence/absence of emergencies) is displayed on the Status tab after pressing the Start reading button (Fig.13). Fig.13. View of the Status tab 4.1.6. To read the archive data, go to the Data log tab (Fig.14), select the type of archive (hourly, daily or monthly), set the required interval in the Date from and Time from fields and press the Read button.

  • Page 28: Pre-Commissioning

    Fig.14. View of the Data log tab 4.1.7. Once the flow meter has been set up: - close the device communication channel with PC by pressing the the upper left corner of the Monitor BUF (310) application window; - close the Monitor BUF (310) application window; - set the device to WORK mode: remove the jumper from the contact pair for allowing the modification of service parameters.

  • Page 29: Operating Procedure

    4.3. Operating procedure The flow meter, which has been put into operation, operates contin- uously in automatic mode. Current values of measured parameters can be read from the flow meter LCD or via RS-485, M-Bus, Wireless M-Bus or NFC interfaces.

  • Page 30: Reading Data With A Smartphone

    Communication between the flow meter and smartphone is provided via the AFLOWT BUF monitor application. 5.2. Installing the AFLOWT BUF monitor application The installation file for the AFLOWT BUF monitor application (apk.) is downloaded from vzljot.ru. To install the application in Android 7+ versions, provide permission to the file manager as a source of software from an unknown source (see Fig.15):...
  • Page 31 Fig.16. AFLOWT BUF monitor application installation window When the installation process is complete, the AFLOWT BUF moni- tor software icon (Fig.17) should appear on the desktop and/or in the ap- plication menu. Fig.17. AFLOWT BUF monitor application icon...

  • Page 32: Connecting To The Flow Meter

    5.3. Connecting to the flow meter To use the AFLOWT BUF monitor program, enable the NFC function in the corresponding menu item (Fig.18) in the smartphone settings. Fig.18. Enabling NFC After installing the AFLOWT BUF monitor application, the application will request access to the file system of the smartphone at its first start (Fig.19).

  • Page 33: Reading Parameters

    Fig.19. Request for access to the file system 5.4. Reading parameters The application contains four tabs: ABOUT UNIT, MEASURE- MENTS, ARCHIVES and SAVED DATA that can be swap sequentially on your smartphone screen by swiping left or right. When you start reading the parameters by pressing the READ but- ton, the progress bar in the form of a rotating circle will be displayed at the top of the screen (Fig.20).

  • Page 34: About Unit Tab

    Fig.21. Display of the lack of NFC 5.5. ABOUT UNIT tab The appearance of the ABOUT UNIT tab is shown on Fig.22. You can read the parameter values by pressing the READ button. Fig.22. ABOUT UNIT tab window This tab displays the following parameters: software version of the flow meter, serial number of the flow meter, nominal diameter (DN), op- erating mode, checksum (CS) of the software, calibration factors, infor- mation about the use of universal and logic outputs, values of output fac-...

  • Page 35: Measurements Tab

    5.6. MEASUREMENTS tab The appearance of the MEASUREMENTS tab is shown on Fig.23. Fig.23. MEASUREMENTS tab You can read current values by pressing the READ button. The tab displays: the current date and time, the current flow rate value (in m /h and l/min), accumulated volumes (direct, reverse and to- tal), total operating time and trouble-free operation time, emergencies.

  • Page 36: Archives Tab

    5.7. ARCHIVES tab The monitor allows you to read hourly (last 96 records), daily (last 92 records) and monthly (last 48 records) archives from the flow meter. The appearance of the ARCHIVES tab is shown on Fig.25. Fig.25. ARCHIVES tab The tab is used to select the type of archive: hourly, daily or monthly.
  • Page 37 Fig.26. Tab with records of the selected archive To view a certain record, click on the line with the corresponding date. To save all records in the file, press the SAVE button. You will see a request to confirm that you want to save SMCV files (Fig.27):...
  • Page 38 Fig.27. Confirming the file saving Saving the files is accompanied by the message “SMCV file was created” (Fig.28).
  • Page 39 Fig.28. Confirming the file saving The files are saved to: sdcard \ Aflowt \ monitor \ export. Depending on the type of smartphone, the path to the saved archive files may differ. NOTE. The file name is formed with indication of the archive type...
  • Page 40 Fig.29. Saved archive files A message is displayed on the smartphone screen (Fig.30) when you are finished with the application:...
  • Page 41 Fig.30. Closing the application...

  • Page 42: Maintenance

    6. MAINTENANCE 6.1. Technical condition monitoring 6.1.1. Commissioned flow meter is recommended to be periodically inspected to check: - Flow meter performance - Compliance with operating conditions - Availability of supply voltage - Absence of external damage to the flow meter - Reliability of electrical and mechanical connections.

  • Page 43: Troubleshooting

    6.2. Troubleshooting 6.2.1. List of possible faults, failures and alarm situations detected by the flow meter and displayedon the LCD with "X" character in the "ERR = - - - - - -" line is given in Table 7. A sign-position code is read from right to left. Table 7 Sign position number Explanation...

  • Page 44: Packing, Storage And Transportation

    7. PACKING, STORAGE AND TRANSPORTATION 7.1. The flow meter is packed in a separate container (corrugated carton or wooden box). 7.2. The flow meter should be kept in the manufacturer's box in a dry heated storeroom. The storeroom should be free from current-conductive dust, acid or alkali fumes and aggressive gases.

  • Page 45: Appendix A. Appearance Of The Flow Meter

    APPENDIX A. Appearance of the flow meter a) front view b) side view * Reference size 1 – pipeline section; 2 – PEA; 3 – secondary converter. Fig.A.1. Flow meter AFLOWT BUF M of U-310 version.
  • Page 46 1 – button; 2 – LCD; 3 – flow direction indicator; 4 – cover. Fig.A.2. Flow meter AFLOWT BUF M. Front panel view...
  • Page 47 1 – RS-485 interface module; 2 – display; 3 – built-in 3.6 V battery; XT1 – RS-485 interface output connector; SK1, SK2 – flow meter network address setting switches (on the RS-485 interface module); XP2 – 3.6 V battery connector; XT3 –...

  • Page 48: Appendix B. Wiring Diagrams

    APPENDIX B. Wiring diagrams Fig.B.1. AFLOWT BUF M flow meter wiring diagram...
  • Page 49 Fig.B.2. Diagram of the terminal stage of the universal and logical outputs The terminal stage of the universal and logic outputs (Fig.B.2) can be powered either from the internal power supply (active mode) or from an ex- ternal power supply (passive mode). Typical delivery includes passive op- eration of the terminal stage.

  • Page 50: Appendix C. Parameters Available For Editing In Monitor Buf (310) Application

    APPENDIX C. Parameters available for editing in Monitor BUF (310) application Table C.1. System tab (Fig.9) Parameter desig- Value after initial- nation on the PC Parameter, measurement units Possible values ization monitor Address of the flow meter in the net- Address 1-247 work...
  • Page 51 Table C.3. Service / Universal output tab (Fig.11) Parameter designa- Value after initiali- tion on the PC mon- Parameter, measurement units Possible values zation itor Logic Universal output operation Type mode Pulse Frequency Type – Frequency (Fig.11.a) Output assignment (parameter Flow See Table C.4 any direction...
  • Page 52 Continuation of table C.3 Parameter designa- Value after initial- tion on the PC mon- Parameter, measurement units Possible values ization itor Type – Pulse (Fig.11.c) Reversing flow Output assignment (parameter Output function See Table C.4 designation) direction Output voltage level when a sig- "Low"...

  • Page 53: Appendix D. Relative Length Of Straight Runs

    APPENDIX D. Relative length of straight runs Table D.1 shows the minimum values of the relative length of straight pipe sections for the various types of local hydraulic resistances required for in- stallation of the flow meters. Table D.1 Relative length of a straight run, L, Type of local hydraulic resistance minimum 10·DN...
  • Page 54 Continuation of table D.1 10·DN Fully open ball valve * 30·DN Pump 3·DN Pump 10·DN DN1 / DN  0,1 3·DN DN1 / DN  0,1 * - fully open, full port ball valve is not a hydraulic resistance. If there are several hydraulic resistances in the pipeline, the length of the straight section of the pipeline to the nearest resistance to the PEA must be at least as specified in this table, and the distance from the PEA to each of the other hydraulic resistances must be at least as large as the...

  • Page 55: Appendix E. Flow Straightener Design

    APPENDIX E. Flow straightener design 1. Fig.E.1 shows the design of flow straightener of A type that is manufac- tured according to the following rules: a) the thickness of the flow straightener board is equal to the diameter of the holes; depending on the material, the board may consist of one or more plates;...
  • Page 56 Fig.E.2. Design of flow straightener of B type 3. Hole pattern in the flow straighteners is shown in Table E.1. Table E.1. Hole coordinates in the flow straighteners of A and B type (D is pipe inner diameter) X-axis Y-axis 0,142D 0.283D 0.423D...

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Buf-310

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