Tel : + 27 11 704 7001 / 5 / 8
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Impact Instruments was established in 2004 as an importer, agent and or distributor for several leading, international brands. Our territory covers South Africa and surrounding SADC countries, where agreements permit. With more than thirty years combined industry experience, we provide technical solutions and believe in not only selling equipment but ensuring that users are product and application trained. We guarantee high quality products and an outstanding level of service at all times. Should you not find what you are looking for, please contact us directly.


Fotolia 48268172 XS

T sonic

Portable Ultrasonic Flow Meter 

Model TUF 2000 H

TUF 2000 H


    • Using clamp-on, transit time flow measurement the flow rate of the liquid inside the pipe is measured by a pair of ultrasonic flow sensors on the outside of the pipe.

    • Liquid should fill the pipe and should contain very little particles or bubbles.

    • Operation is by alternately transmitting and receiving a frequency-modulated burst of sound energy between the two transducers and measuring the transit time that it takes for sound to travel between the two transducers. The difference in the transit time measured is directly and exactly related to the velocity of the liquid in the pipe, as shown in the following figure.

Ultrasonic sensor diagram
θ is the angle between the sound path and the flow direction
M is the number of times the sound traverses the flow
D is the pipe diameter
T up is the time for the beam travelling from upstream the transducer to the downstream transducer
T down is the time for the beam travelling from the downstream transducer to the upstream transducer
ΔT = Tup – Tdown
    • Water : Chilled, cooling, city, sea
    • Sewage
    • Crude oil, lubricating oil, diesel oil, fuel oil
    • Chemicals
    • Alcohol
    • Acids
    • Waste
    • Beverages
    • Solvents


Pipe sizes : 25 ~ 6,000mm (sensor dependent)


Normally better than ±1% for velocity above 0.2m/s


Built-in data logger can store over 2,000 lines of data. Can be used with a RS 232 to USB adapter and generic interface software, to download logs to a .CSV file (this is not supplied)



Flow Meter, chains, couplant, case and choice of sensors and bracket (optional) 

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Portable Ultrasonic Flow Meter with built in printer, SD card logging and optional 4-20mA

TUF 2000 PE

  • Non intrusive, ultrasonic flow meter suitable for flow surveys with paper print out, saving to SD card and optional 4-20mA
  • High accuracy : +/1 %
  • Wide measuring range : DN 25 to DN 6000mm
  • Built in thermal printer
TUF 2000 PE
TUF 2000 PE sd slot alone         2GB SD card


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