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Ultrasonic Liquid Flow Meter with Thermal Energy/BTU Capability

Ultrasonic Liquid Flow Meter with Thermal Energy/BTU Capability

Regular price $1,805.00 Sale

Ultrasonic Liquid Flow Meter With Thermal Energy/BTU Capability

Features LARGE LCD display, shows the Instantaneous Flow Rate, Total Flow, in user selectable units.  One of the first Ultrasonic flow meters with data logger. Both 24 VDC and universal AC power capability


  • Medium: Any acoustically conductive fluid with less than 5% air bubbles or solids
  • Pipe size: ¼” to 240”
  • Flow rate: Supports velocities up to  40 f/s or 12 m/s 
  • Temperature: - 20 - 110 ℃
  • Transducer material: Aluminum and 304 SS
  • Cable length: 15’
  • Accuracy: ±1%  from 0.15 to 40 f/s (0.05 to 12 m/s)
  • Resolution: 0.01 ft/s (0.00025 m/s)
  • Response time: 150 ms measuring cycle typical
  • Transducer Frequency: 1 MHz
  • Clamp-on transducers: encapsulated design IP68
  • Enclosure Grade: IP65
  • Display LCD Screen
  • Power Supply: Set up to use either 24VDC or a 86-240 VAC Universal Power Supply. Only one at a time. Consumes 500 mA max
  • Output: 4-20mA + 0-10K Hz + Standard ModBus RTU Communication protocol
  • Ultrasonic flow meter with data logger
  • Note: For 1 to 5 VDC output, add 250 Ohm resistor to 4 to 20 mA loop

    Quick Ultrasonic Instruction Manual 

    Quick Ultrasonic Instruction Manual, Style 2

    Ultrasonic Installing Cheat Sheet

    Ultrasonic Installing Cheat Sheet, Style 2

    Ultrasonic Flow Meter Cheat Sheet

    Acoustic Coupling Grease Specifications:

    Dow Corning Product Name: MOLYKOTE™ BR-2 Plus High Performance Grease
    This material is designed to remain in a gel like form to increase the acoustic coupling of the ultrasonic transducers to the pipe. This material works from -57 to 204 Degrees C which is above the specs of the transducers.

    Here is a source to buy it: MSC # 31735293    

    Dow 111 Molykote

    In a "pinch" one could use KY Jelly from the drug store but it is runny. The goal is to have a material that will not have bubbles in it and provides good sonic coupling. Air bubbles are the "enemy" of ultrasonic transducers. Using traditional Silicone sealant, such as that used for sealing windows, could also be used in an emergency but you MUST assure there are no air bubbles.

    MAG Meter Complimentary Product line

    Mag Meter Product Overview

    Ultrasonic Meter Transducer Installation requirements: On this flow meter, as well as of all flow meters, it is CRITICAL that the pipe remains full at all times. This meter requires that the flow remain relatively consistent. Note 10 diameters clear of obstruction upstream and 5 diameters down.

    Ultrasonic flow meter installation guide

    Ultrasonic Flow Meter Installation Guide 2

    Pipe ID and OD Chart 

    Pipe ID and OD by Tioga

    Simple Overview how Ultrasonic Flow Meters Work

    PDF of How Ultrasonic Flow Meters Work


    Video showing How to connect 4-20 mA on the Ultrasonic Flow Meter

    Ultrasonic Flow Meter Wiring for 4-20 mA output

    Sound speed of various materials:

    Sound Speed Various Materials