The section for volume, flow and temperature at SP Technical Research

Institute of Sweden performs measurements of volume, flow and temperature

in liquids.

Flow meters are best calibrated in its installation to take sources of error like

installation effects and the medium into account. If this can be done without

having to place measurement equipment inside the pipe it will mean several

practical benefits.

Since many years, clamp-on ultrasonic flow meters have been available on the

market. But even with today’s improvements they still have a measurement

uncertainty in the measurements that is five to ten times too big to make them

useful as references for calibration procedures.

This thesis focuses on analysis, using reversed engineering, of an existing

clamp-on ultrasonic flow meter.

The goal of the project is evaluation and further development of the ultrasonic

flow meter’s existing computer interface with the purpose of offering the

option of using Microsoft Excel and Visual Basic for data acquisition and

measurement of the flow rate of liquids.