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Onicon F-4300 Installation & Operation Manual

Clamp-on ultrasonic flow meter
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F-4300
Clamp-on Ultrasonic Flow Meter
Installation & Operation Guide
ONICON

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Vernon Monger
March 17, 2025

I have two F-4300 meters hooked to Johnson Control's BMS on a project. We are able to read them in the metasys, but they randomly go off line for several minutes then re-establish communication. I **** looking for a solution.

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1 comments:
Mr. Anderson
March 17, 2025

The Onicon F-4300 meters could be randomly going offline when connected to Johnson Control's BMS due to communication or signal-related issues. Possible causes include:

1. LOS (Loss of Signal) Time Setting: If there are high concentrations of undissolved gases or other signal interferences, the meter may hold the last valid reading for the LOS Time duration. If signal strength does not return within this time, the meter will report zero flow and trigger a Low Signal alarm, which could cause it to appear offline.

2. Flow Below Min Flow Setting: If the measured flow rate falls below the configured Min Flow value, the meter forces the reading and outputs to zero, which may be interpreted as the meter going offline.

3. MODBUS Communication Settings: If the BMS is using MODBUS, incorrect configuration of registers, unsupported function codes, or communication timeouts could cause intermittent disconnections.

4. APDU Timeout and Retries: The default APDU Timeout is 6000 ms, and the number of retries is 3. If the BMS does not handle timeouts well, it may drop the connection.

5. Segmentation Support: The F-4300 does not support segmentation. If the BMS expects segmented responses, it could cause communication failures.

6. Device Address Conflicts: If multiple devices on the network have the same address, communication conflicts may cause the meter to go offline.

Checking and adjusting these settings in both the F-4300 and the BMS may help resolve the issue.

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Summary of Contents for Onicon F-4300

  • Page 1 F-4300 Clamp-on Ultrasonic Flow Meter Installation & Operation Guide ONICON...
  • Page 2 • ONICON Incorporated assumes no responsibilities for this product except as stated in the warranty. • If the customer or any third party is harmed by the use of this product, ONICON Incorporated assumes no responsibility for any such harm owing to any defects in the product which were not predictable, or for any indirect damages.

  • Page 3: Table Of Contents

    SECTION 4.0 START - UP ........................25 4.1 NAVIGATING THE RUN MODE & PROGRAMMING PAGES ..................25 4.2 RUN MODE & PROGRAMMING PAGE LAYOUT ......................26 4.3 RUN MODE ICONS ...............................27 4.4 RUN MODE PAGES ...............................28 4.5 PROGRAMMING MENU PAGES ..........................30 ONICON Incorporated 727.447.6140 Page 3 onicon.com...
  • Page 4 7.1 HELPFUL HINTS FOR START - UP AND COMMISSIONING ..................47 7.2 COMMISSIONING PROCEDURE ..........................47 7.3 COMMISSIONING WORKSHEET ..........................48 SECTION 8.0: TROUBLESHOOTING ....................49 APPENDIX A - SPEED OF SOUND IN WATER TABLE ..............50 APPENDIX B - PIPE CHARTS ......................51 ONICON Incorporated 727.447.6140 Page 4 onicon.com...

  • Page 5: Section 1.0 General Information

    1.2 TYPICAL F - 4300 FLOW METER The F-4300 Ultrasonic Flow Meter utilizes clamp-on signal transducers that mounted on the outside wall of the pipe. It is suitable for measuring the volumetric flow of liquids in a wide variety of applications including bi-directional flow applications.

  • Page 6: Standard Features And Specifications

    Device Instance Range 0 - 4,194,302 (BACnet MS/TP only) Parity None, Even or Odd (MODBUS® RTU only) APPROVALS 2014/30/EU EMC Directive EN61010 F-4300 FLOW SENSOR PERFORMANCE SENSING METHOD Non-wetted, pipe mounted transducers OPERATING Ultrasonic differential transit time velocity measurement OPERATING CONDITIONS FLUID TEMPERATURE -40°F to 250°F...

  • Page 7: Model Numbering Codification

    1.8 SERIAL NUMBER The serial number of your F-4300 is located outside and inside the enclosure. Transducers will be packaged inside the enclosure they were calibrated with and will bear their own unique serial numbers. You should have one of these serial numbers available when contacting ONICON for assistance regarding your meter.

  • Page 8: Section 2.0 Unpacking

    F - 4300 CLAMP - ON ULTRASONIC FLOW METER SECTION 2.0 UNPACKING The F-4300 is generally shipped in one package. Notify the freight carrier and ONICON if any items are damaged in transit. 2.1 CHECKING THAT YOU HAVE RECEIVED EVERYTHING...

  • Page 9: Section 3.0 Installation

    3.1 OVERVIEW Each F-4300 Ultrasonic Flow Meter is provided with a pair of matched ultrasonic transducers. The transducers are mounted (clamped) on to the outside wall of the pipe. Triaxial cables convey the transducer signals to the wall mount enclosure containing the signal processing circuitry and the user interface display.

  • Page 10: One (1) Cross Mode (Direct)

    Transducer Transducer Transducer Transducer *Shown in "Setup" menu after sensor, fluid and pipe parameters are entered. See pg. 31 for more information. 2 or 4 Cross Separation Distance 2 or 4 Cross Separation Distance ONICON Incorporated 727.447.6140 Page 10 onicon.com...

  • Page 11: Site Selection

    IMPORTANT NOTE The maximum allowable distance between the wall-mount enclosure and the transducers installed on the pipe is 100 feet. Only ONICON furnished cable may be used between wall-mount enclosure and the transducers. ONICON Incorporated 727.447.6140 Page 11...

  • Page 12: The Transducers

    • Mounting on a vertical pipe is recommended only if flow is in the upward direction. When mounting on a vertical pipe flowing in a downward direction, make sure there is sufficient back pressure in the system to maintain a full pipe. ONICON Incorporated 727.447.6140 Page 12...

  • Page 13: Mechanical Installation

    1.34” END VIEW 3X D = 0.875” CONDUIT HOLE AND DIMENSIONS CAUTION Do not drill additional holes in this enclosure. Doing so may damage the electronic circuitry contained within and will void all warranties. ONICON Incorporated 727.447.6140 Page 13 onicon.com...

  • Page 14: Preparing The Pipe

    Prepare mounting at the 10:00 or 2:00 position locations for transducers GOOD Air at the top of the pipe will disrupt the signal Solids at the bottom of the pipe will disrupt the signal ONICON Incorporated 727.447.6140 Page 14 onicon.com...

  • Page 15: Two (2) Or Four (4) Cross Mode (Reflect) Mounting Using Brackets And Spacer Bar

    Tighten the assembly firmly on the pipe. Do not over tighten the straps. Separation Distance Transducer Transducer 5. Proceed to Section 3.3.4 Installing Transducers In Bracket and Spare Bar Hardware 2 or 4 Cross Separation Distance ONICON Incorporated 727.447.6140 Page 15 onicon.com...

  • Page 16: One (1) Cross Mode (Direct) Mounting Using Brackets And Spacer Bar

    2" pipe minimum IMPORTANT NOTE Mount the mounting bracket as illustrated on pipes 2" / 50 mm od or larger. Stainless steel bands are included for mounting on pipes up to 30" / 750 mm od. ONICON Incorporated 727.447.6140 Page 16 onicon.com...
  • Page 17 7. Wrap the mylar sleeve around the pipe so that the left edge is against the transducer edge mark. Arrange so that one end overlaps the other. Ensure that it is snug around the pipe and mark along the overlapping edge. Draw the guide tightly around the pipe and mark at the overlapping edge Spacing guide ONICON Incorporated 727.447.6140 Page 17 onicon.com...
  • Page 18 For horizontal pipe positions, hold the level up to the top of the bracket to ensure the angle is correct. Separation Distance Transducer Transducer 14. Proceed to Section 3.3.4 Installing Transducers In Bracket and Spare Bar Hardware. 1 Cross Separation Distance ONICON Incorporated 727.447.6140 Page 18 onicon.com Separation Distance...

  • Page 19: Installing Transducers In Bracket And Spacer Bar Hardware

    3.3.4 Installing Transducers In Bracket and Spacer Bar Hardware 1. Apply the coupling to the transducer as show below. A packet of acoustic coupling compound was supplied with the transducers. Contact ONICON if you need more compound. Too little grease Apply a continuous lengthwise ¼”...
  • Page 20 BNC connector. In environments where condensation may occur (chilled water systems), apply a generous amount of acoustic coupling compound dielectric grease inside the boot before sliding it over the BNC connector. 5. Repeat procedure for the second transducer. ONICON Incorporated 727.447.6140 Page 20 onicon.com...

  • Page 21: Connecting The Transducer Signal Cables

    3.4 CONNECTING THE TRANSDUCER SIGNAL CABLES ONICON F-4300 transducer cables are special purpose triaxial cables. Care must be taken when installing the cables to ensure that electrical noise will not affect the performance of the meter. The cables must NOT be bundled or run in conduit with any other signal or power cables.

  • Page 22: Electrical Installation

    • 110-240 VAC, 50/60 Hz, 10 VA max WARNING Conduit openings in the F-4300 enclosure must be closed with UL listed fittings applicable to NEMA 4 enclosures. WARNING The protective earth connection must be made as shown in Section 3.5.2. Failure to do so will result in an increased risk of injury.

  • Page 23: Power And Output Signal Wiring Details

    F - 4300 CLAMP - ON ULTRASONIC FLOW METER 3.5.2 Power and Output Signal Wiring Details WARNING Turn off mains power at the source prior to making power connections to the F-4300. Contact with exposed live wiring may result in electric shock, burns and/or serious injury. INPUT POWER...

  • Page 24: Transducer And Sensor Wiring Details

    1. Transducer (triaxial) cables must not be bundled or run in conduit with any other signal or power cables. 2. When using conduit, run transducer cables from transducers through conduit into electronics enclosure. DO NOT cut or splice triaxial cable termination. ONICON Incorporated 727.447.6140 Page 24 onicon.com...

  • Page 25: Section 4.0 Start - Up

    4.1 NAVIGATING THE RUN MODE & PROGRAMMING PAGES The diagram on the next page shows the F-4300 menu system. Arrows show the four directions to navigate between menu boxes. Pressing a corresponding keypad arrow will move to the next item in the direction shown.

  • Page 26: Run Mode & Programming

    Restore Defaults New Password 0000 --Simulation--------  Test Actual Flow 250USG/m 4-20mA Flow 5.60mA Relays 1 2 3 4 5 6 --Configuration----- Serial# 12345 Utility 1.26.0.5 Transit Time 1.38.1 CommBoard 1.18.0 Relays Analog Out ONICON Incorporated 727.447.6140 Page 26 onicon.com...

  • Page 27: Run Mode Icons

    4.3 RUN MODE ICONS ICONS DESCRIPTION Message waiting. Press Data logging off. Data logging on. USB file download. File download complete. Download error. Ultrasonic echo established. No echo, empty pipe. No sensors attached / wrong settings. ONICON Incorporated 727.447.6140 Page 27 onicon.com...

  • Page 28: Run Mode

    Average 34.82 USG/m Up to 365 days are stored, and after that date, the oldest data is removed to Maximum 52.20 USG/m make room for the newest. Max Time 11:08:00 Minimum 0.000 USG/m Min Time 9:15:00 ONICON Incorporated 727.447.6140 Page 28 onicon.com...
  • Page 29 See section 4.5 for instructions on changing this value. If the password has been changed from the default, use the directional buttons to change the digit values, then the to accept the password and move into the programming menu. ONICON Incorporated 727.447.6140 Page 29 onicon.com...

  • Page 30: Programming Menu

    Any changes made in these menus are automatically saved and take effect immediately. Your meter should have arrived pre-programmed by ONICON, so please use caution when changing any parameters which affect the setup of the meter, such as the pipe material or pipe size.
  • Page 31 All of these settings are pre-configured by ONICON before shipment. These Temp 77.0 F settings should only be adjusted if the process conditions provided to ONICON Pipe at time of order were incorrect, or different transducers were supplied for field 4.5000 in...
  • Page 32 This distance is defined as the measurement between the inside of both transducers. Because the meter comes pre-programmed from ONICON, this number is already defined for you on the Site Installation Details sheet. However, if any of the factors listed above are changed in the field, you will need to change the transducer spacing to the new number provided here.
  • Page 33 Example: Systems with high concentrations of undissolved gasses will cause fluctuations in signal strength when the gasses move past the ultrasonic signal. If a complete loss of signal is experienced, the F-4300 will hold the last valid reading for the duration of the LOS Time.
  • Page 34 Relay Parameters Menu Page --Relay Parameters-- The relay parameters page is where changes can be made to the pulse outputs  Relay available with the F-4300. Function Flow Relay – Defines which pulse output you are making changes to, either 1 or 2.
  • Page 35 File Format – Define how you will want the data presented when downloaded. File Format .LG2 Choose .LG2 when you will be looking at the log data with the ONICON Logger Date Jun 26/2017 Utility software. Choose .CSV when you will be loading the data directly into an...
  • Page 36 Restore Defaults – Selecting YES will cause all of the programming settings to revert to the factory default. These defaults are different than the programming ONICON performed at the factory before the meter was shipped. New Password – This function allows a new password to be set. This password protects the programming menu access from the Main Display.

  • Page 37: Section 5.0 Bacnet Ms/Tp

    F-4300. All of the values in this menu are read-only. Utility 1.26.0.5 Serial # - Serial number of the F-4300. This value is also present on the outside of Transit Time 1.38.1 the enclosure, and inside the door.

  • Page 38: Bacnet Object Types

    Device Management-DeviceCommunicationControl-B (DM-DCC-B) Device Management-Time Synchronization - B (DM-TS-B) Device Management - UTC Time Synchronization – B (DM-UTC-B) Standard Object Types Supported: Device Object Binary Value Object Analog Input Object Multi-State Value Analog Value Object ONICON Incorporated 727.447.6140 Page 38 onicon.com...

  • Page 39: Device Object

    F - 4300 CLAMP - ON ULTRASONIC FLOW METER 5.3 DEVICE OBJECT Property Default Value Read-only or Comment Writable Object Identifier 57017 Writable 0-4,194,303 Object Name ONICON F-4300-XXXXXX Read-only XXXX= Serial Object Type Device Read-only System Status Operational Read-only Vendor Name ONICON Inc. Read-only...

  • Page 40: Analog Input ( S )

    Analog input 1 Flow velocity Analog input 2 Flow rate Analog input 3 Sonic velocity BACnet Engineering Units for Analog Inputs Flow Velocity: ft/s, m/s Volume rate: gpm, L/s, ms/m, ft³/m, L/m Sonic velocity: ft/s, m/s ONICON Incorporated 727.447.6140 Page 40 onicon.com...

  • Page 41: Analog Value ( S )

    Volume total: gallons, liters, cubic meters, cubic feet Logging Used: Percent (0-100) Previous day average flow: gpm, L/s, m³/m, ft³/m, L/m Previous day volume: gallons, liters, cubic meters, cubic feet Signal Strength: Percent (0-100) ONICON Incorporated 727.447.6140 Page 41 onicon.com...

  • Page 42: Binary Value ( S )

    Write 1 = reset total Binary value 2 Pulse output 2 status 0 = Pulse inactive, 1 = Pulse active Binary value 3 Pulse output 2 status 0 = Pulse inactive, 1 = Pulse active ONICON Incorporated 727.447.6140 Page 42 onicon.com...

  • Page 43: Multi - State Value

    6 = Sensor relay fault 7 = Sensor system fault Multi-state value 2 Reports the logging status of the meter Numeric values indicate meter status. 1 = Logging 2 = Stopped 3 = Full ONICON Incorporated 727.447.6140 Page 43 onicon.com...

  • Page 44: Section 6.0: Modbus

    02 - Read Discreet Input(s) 04 - Read Input Register(s) 05 - Write Single Coil 06 - Write Single Register 15 - Write Multiple Coils 16 - Write Multiple Registers 17 - Report Slave ID ONICON Incorporated 727.447.6140 Page 44 onicon.com...

  • Page 45: Modbus Memory Map

    Over Read/ Comments Address Type Range Range Write Reset Volume Coil Read/ Turn coil ON (1) to reset total on F-4300. Turn Total Write coil to OFF (0) once reset is complete. Register Description Register Data Over Read/ Comments Address...

  • Page 46: Report Slave Id Function Code

    The MODBUS implementation of the F-4300 supports the use of function code 17, Report Slave ID. When a message is sent to the F-4300 requesting to report the slave ID, the following information is returned after converting the HEX meter response to ASCII: “Transit-Time Flowmeter - XXXXXX”...

  • Page 47: Section 7.0 Commissioning Clamp - On Ultrasonic Flow Meters

    Please read these helpful hints before proceeding with the commissioning procedure on the next page. 1. ONICON flow meters are individually calibrated for a particular application. Be sure to verify the pipe size and location. 2. The ultrasonic flow sensing systems will not work with an empty pipe.

  • Page 48: Commissioning Worksheet

    ___________mA ___________mA output(s) __________VDC __________VDC __________VDC __________VDC 4-20 mA signal: _____________ _____________ _____________ _____________ Scaled output interval: __________GPM __________GPM __________GPM __________GPM Calculated flow rate: Flow rate displayed __________GPM __________GPM __________GPM __________GPM by control system. ONICON Incorporated 727.447.6140 Page 48 onicon.com...

  • Page 49: Section 8.0: Troubleshooting

    • Ensure triax cable shield is properly connected to ground. to electrical noise or poor • Ensure correct power input ground connection. signal quality. • Double-check sensor separation distance and contact ONICON for further assistance. • Adjust Calibration Menu / Min Flow setting. Variable speed drive •...

  • Page 50: Appendix A - Speed Of Sound In Water Table

    1516.44 192.0 88.9 1551.10 460.0 237.8 1200.00 94.0 34.4 1518.70 194.0 90.0 1550.48 470.0 243.3 1180.00 96.0 35.6 1520.89 196.0 91.1 1549.82 480.0 248.9 1160.00 98.0 36.7 1523.00 198.0 92.2 1549.12 490.0 254.4 1140.00 ONICON Incorporated 727.447.6140 Page 50 onicon.com...

  • Page 51: Appendix B - Pipe Charts

    55.8 0 0 .7 3 55.6 4 0 .8 1 55.4 8 0 .8 9 55.32 0 .9 7 55.16 1 .0 5 55.00 ONICON Incorporated 727.447.6140 Page 51 onicon.com **R EDU CE I.D . BY DIMEN SION SH OWN...
  • Page 52 17.438 1.281 17.000 1.500 16.500 1.750 16.064 1.968 22.000 20.250 .875 19.750 1.125 19.250 1.375 18.750 1.625 18.250 1.875 17.750 2.125 24.000 22.064 .968 21.564 1.218 20.938 1.531 20.376 1.812 19.876 2.062 19.314 2.343 ONICON Incorporated 727.447.6140 Page 52 onicon.com...
  • Page 53 20.24 22.54 1.27 20.00 23.02 1.39 20.24 23.02 1.51 20.00 26.90 1.31 24.28 26.90 1.45 24.00 27.76 1.75 24.26 27.76 1.88 24.00 33.10 1.55 30.00 33.46 1.73 30.00 39.60 1.80 36.00 40.04 2.02 36.00 ONICON Incorporated 727.447.6140 Page 53 onicon.com...
  • Page 54 7.725 0.200 8.125 7.785 0.170 8.625 8.000 0.313 8.000 7.812 0.094 10" 10.125 9.449 0.338 10.125 9.625 0.250 10.125 9.701 0.212 10.000 9.812 0.094 12" 12.125 11.315 0.405 12.125 11.565 0.280 12.125 11.617 0.254 ONICON Incorporated 727.447.6140 Page 54 onicon.com...
  • Page 55 ONICON ONICON Incorporated • 11451 Belcher Road South • Largo, FL 33773 • USA DOC-0002380 December 2019 (P) 727.447.6140 • (F) 727.442.5699 • onicon.com...

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