The Science Behind Flow Measurement: Pump Efficiency Testing White Paper

Westcan is intimately involved with many industries, and every time our Reliability Engineers receive a call from clients with concerns about pump performance , a technical dialogue ensues.

That dialogue centres around the pump’s performance curve to determine how it is operating, with particular attention paid to flow and discharge pressure. In the majority of cases the information required is missing, highly questionable or just not available. Pressure taps/gauges are often not installed or operational. But a facility’s DCS is a great source of data.

The variety of flow measurement devices includes things like jeweled orifice plates, magnetic flowmeters, Coriolis meters, invasive probes, and rotameters . In all cases, accuracy of a device can vary greatly.


Figure 1 Schematic of the Yatesmeter testing set-up

The following white paper by Imad Abu Yousef, M.A.Sc., EIT, with his written permission, highlights a method of measuring 1 and 2 phase flow to extremely high accuracy. The principle behind the flow measurement is using thermodynamic changes in the fluid in the process stream as it passes through the pump from suction to discharge. This method allows the Reliability Engineer to determine the efficiency or loss of efficiency, as the case may be. It should be noted that the accuracy of the outcome is directly executable in the plant.

By utilizing the Yatesmeter, qualified techn­­­­icians will determine the best course of action.The bottom line is all about harvesting accurate data in order to make informed decisions.

Download the complete White Paper today.


Written by:

Imad AbuYousef , M.A.SC, E.I.T.
Mechanical Engineer