Flow calculator

Flow Calculator and Consumption Curve

Please try out our tool for Calculation of the consumption curve of our Parshall flumes.

The tool calculates the flow depending on chosen dimension of Parshall flume and depth in the throat of Parshall flume.

The formulas are calculated according to DAVIS (1961, December, Journal of the Irrigation and and Drainage Division), formula is equal to ISO 9826:1992 - Measurement of liquid flow in open channels. Our Parshall flumes have been type approved by the Czech Metrology Institute under the type approval mark: TCM 142/95-2075.

Based on input estimated uncertainties of certain parameters the tool calculates expanded uncertainty of measurement according to the EA 4/02 document with a coverage probability of approximately 95 % (k=2).

 Flow Calculator