Viscous fluids, measuring rate of flow

VISCOUS FLUIDS, MEASURING RATE OF FLOW V020-1

The Hydraulic Institute standard ANSI/HI 3.6 Rotary Pump Test recommends measurement by weight.

Measure the change in weight of a tank, during a specific time period.

  • The tank can be located on the suction or discharge side of the pump.
  • All flow in or out of the tank must pass though the pump.
  • You need accurate methods of measuring the weight and time. You need an accuracy of one –quarter of one percent for both measurements.

Another method is measurement by volume.

  • Measure the change in liquid level in a tank or reservoir of known volume during a measured period of time.
  • The tank or reservoir can be located on the suction or discharge side of the pump.
  • All flow in or out of the tank or reservoir must pass through the pump.
  • Measure the levels by floats. vertical gauge glasses, or any other accurate gauge that makes sense.

Positive Displacement Meters provide direct reading volume measurement.

  • The time interval for the collection period should also be measured to an accuracy of one-quarter of one percent.

Pay close attention to the volume of the tank or reservoir you’ll be using to measure the flow.

  • Especially the effect of temperature on its capacity.

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  • On February 17, 2018