DwyerMeasurement

Dwyer Compact ultrasonic flow meter UFM2-14

SKU 3G-CBM-02190

Also listed as: DWY 18102 · DWY-18102

Brand

Dwyer

Item

Compact ultrasonic flow meter UFM2-14

Local availability & support — Singapore

Local office: 20 Woodlands Link #09-05, Singapore 738733
Phone: +65 8878 8355
Delivery: Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment: Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to: Singapore

Technical Specifications

Dwyer

power supply

12-24 VDC / 24 VAC 

power consumption

7 W / 7 VA minimum 

compatible materials

steel, stainless steel, copper, plastic 

pipe internal diameter range

0.8" to 6.5" (20 mm to 165 mm) 

Datasheet Content

UFM2/UBT
 UFM2: Clamp-on Ultrasonic Flow Meter
 UBT: Clamp-on Ultrasonic Heat Meter



                      User Manual




                                              UBT shown




DWYER INSTRUMENTS, INC.
102 INDIANA HWY 212           Phone:   219-879-8000
MICHIGAN CITY                 Fax:     219-872-9057
INDIANA 46360                 Web:     www.dwyer-inst.com
USA                           Email:   info@dwyer-inst.com




                                                          Issue 1.1
                                                                                                   UFM2/UBT User Manual

CONTENTS

1 INTRODUCTION ....................................................................................... 1
  1.1      General Description ............................................................................................................ 1
  1.2      How Does It Work? ............................................................................................................. 2
  1.3      Package Contents .............................................................................................................. 3
  1.4      Display................................................................................................................................ 4
  1.5      Quick Start Procedure ........................................................................................................ 5

2 INSTALLATION......................................................................................... 6
  2.1      Identify Suitable Location .................................................................................................... 6
     2.1.1        Additional Considerations for Locating UBT ................................................................. 6
    2.1.2   Clean the Pipe’s Flow Sensor Contact Area ................................................................ 7
  2.2    Connect Power and Signal Cables ..................................................................................... 7
     2.2.1        Power Supply .............................................................................................................. 7
     2.2.2        Pulse Output Connection ............................................................................................. 8
    2.2.3    Current Output (UFM2 only) ........................................................................................ 8
    2.2.4    Modbus Connections (if fitted) ..................................................................................... 8
    2.2.5    Temperature Sensor Probes (UBT only) .................................................................... 10
  2.3    Switch On ......................................................................................................................... 11
    2.3.1    UFM2 ........................................................................................................................ 11
    2.3.2    UBT ........................................................................................................................... 12
  2.4    Adjust Flow Sensor Separation ......................................................................................... 13
  2.5    Apply Gel Pads ................................................................................................................. 13
  2.6    Clamp Sensor Assembly to Pipe....................................................................................... 14
    2.6.1    Pipe Adaptors ............................................................................................................ 14
    2.6.2    Attaching to Pipe ....................................................................................................... 15
  2.7    Remove Sensor-Holding Screws ...................................................................................... 16
  2.8    Connect Electronics Module ............................................................................................. 16
  2.9      Attach the Temperature Sensors (UBT Only).................................................................... 17
  2.10     Normal Operation ............................................................................................................. 18
     2.10.1       UFM2 ........................................................................................................................ 18
     2.10.2       UBT ........................................................................................................................... 18
     2.10.3       Troubleshooting the Flow Reading ............................................................................ 19
  2.11     Clip Electronics Module to Sensor Assembly .................................................................... 19

3 MENUS.................................................................................................... 20
  3.1      Accessing the Menus........................................................................................................ 20
  3.2      Setup Menu ...................................................................................................................... 21
  3.3      Modbus Menu ................................................................................................................... 22



Issue 1.1b July 20                                                                                                                       Page i
UFM2/UBT User Manual
  3.4      Current Output Menu (UFM2 only).................................................................................... 23
  3.5      Pulse Output Menu ........................................................................................................... 24
  3.6      Calibration Menu .............................................................................................................. 25
  3.7      Volume Totals Menu ......................................................................................................... 26
  3.8      Diagnostics Menu ............................................................................................................. 27

4 OUTPUTS ................................................................................................ 28
  4.1      Pulse Output ..................................................................................................................... 28
     4.1.1        Volumetric Pulse........................................................................................................ 28
     4.1.2        Frequency Mode........................................................................................................ 29
     4.1.3        Energy Pulse (UBT only) ........................................................................................... 29
     4.1.4        Flow Alarm - Low Flow .............................................................................................. 29
    4.1.5    Flow Alarm – Signal Loss .......................................................................................... 29
  4.2    4-20 mA Current Output (UFM2 only, if fitted) ................................................................... 29
  4.3    Modbus (if fitted) ............................................................................................................... 30

5 RELOCATING THE UNIT......................................................................... 33

6 APPENDIX .............................................................................................. 34
  6.1    Specification ..................................................................................................................... 34
  6.2    Default values ................................................................................................................... 36
  6.3    Limitations with Water-Glycol Mixtures ............................................................................. 36
  6.4    Positioning ........................................................................................................................ 36
  6.5    Error and Warning Messages ........................................................................................... 38
    6.5.1     Error Messages ......................................................................................................... 38
    6.5.2     Example Error Messages........................................................................................... 38
     6.5.3        Modbus Error Messages (if Modbus fitted) ................................................................ 39
     6.5.4        Flow Errors ................................................................................................................ 39
     6.5.5        Flow Warnings ........................................................................................................... 39
     6.5.6        Data Entry Errors ....................................................................................................... 40




Page ii                                                                                                         Issue 1.1b July 20
                                                                       UFM2/UBT User Manual


1          INTRODUCTION

1.1        General Description
This manual describes the installation and use of the UFM2 flow meter and UBT energy meter:
•      UFM2 is an ultrasonic clamp-on flow meter for measuring flow rate and total flow with a volume
       pulse output and optional Modbus or 4-20 mA flow proportional output. It can be used as a
       standalone meter or as part of an integral management system.
•      UBT is an ultrasonic clamp-on thermal, heat/energy meter. It uses ultrasound to measure flow
       rate and is also equipped with PT100 temperature sensors to measure flow and return
       temperatures. The energy meter displays energy rate and totalised energy with pulse output
       and communication options, so it can be used as a standalone meter or as an integral part of
       Automatic Monitoring & Targeting (aM&T) or a Building Energy Management System (BEMS).
The electronics and sensor housings form an integral unit which attaches to the pipe using the
supplied hose clips. Power to the unit is provided by an external 12-24 VDC / 24 VAC power supply
(7 W / 7 VA minimum). The unit operates on steel, stainless steel, copper and plastic pipes with
internal diameter in the range 0.8” (20 mm) to 6.5” (165 mm) depending on the product purchased.
The models can also be supplied with Modbus digital communication options.
Typical applications:
    UFM2                                             UBT
    Hot water metering and flow measurement          Hot water metering and flow measurement
    Flow measurement for heat metering               Flow measurement for Energy Metering
    Chilled water metering and flow measurement      Chilled water metering and flow measurement
    Potable water metering and flow measurement
    Process water metering and flow measurement
    Ultra-pure water metering and flow
    measurement.


           NOTE:

The UBT default configuration is:
•      Instrument Type: Heating
•      Installation Side:   Return
•      Fluid:               Water
Return refers to the location of the flow measurement relative to flow circuit.




Issue 1.1b July 20                                                                           Page 1
UFM2/UBT User Manual

1.2      How Does It Work?
The UFM2 and UBT meters use a cross correlation transit time algorithm to provide accurate flow
measurements.
An ultrasonic beam of a given frequency is generated by applying a repetitive voltage pulse to the
transducer crystals.…

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Dwyer Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Dwyer Compact ultrasonic flow meter UFM2-14

Frequently Asked Questions

What is the Dwyer UFM2-14 compact ultrasonic flow meter used for?

The Dwyer UFM2-14 is a clamp-on ultrasonic flow meter used for non-invasive flow measurement of liquids in pipes. It is suitable for applications in water treatment, HVAC, and industrial process control where pipe access is limited, and works with steel, stainless steel, copper, or plastic pipes.

What are the specifications of the Dwyer UFM2-14 flow meter?

The Dwyer UFM2-14 operates on 12-24 VDC or 24 VAC power with minimum consumption of 7 W or 7 VA. It measures flow in pipes with internal diameters from 0.8" to 6.5" (20 mm to 165 mm) and is compatible with steel, stainless steel, copper, and plastic pipe materials.

Where to buy the Dwyer UFM2-14 in Singapore?

You can source the Dwyer UFM2-14 compact ultrasonic flow meter from 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this Dwyer instrument.

How to install the Dwyer UFM2-14 clamp-on flow meter?

To install the Dwyer UFM2-14, first identify a suitable pipe location with adequate straight run upstream and downstream. Clean the pipe surface where the sensor will attach, then connect power (12-24 VDC or 24 VAC) and signal cables per the manual. Switch on and follow the quick start procedure for configuration.

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Dwyer Products

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