Flowmeter proving apparatus

G - Physics – 01 – F

Patent

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Details

G01F 25/00 (2006.01)

Patent

CA 2056929

ABSTRACT OF THE DISCLOSURE A reliable meter factor can be obtained in a short time in case of proving flowmeters having non-uniform pulse outputs by use of a small volume prover. While a proving, line in which a flowmeter 3 to be proved and a small volume prover 4 are connected in series with each other is by-passed by opening a by-pass valve 2. A CPU 13 calculates the irregularity of meter-pulse spacing, determines the repeatability (%) for a proving run from the number of counted meter pulses and a function given by the meter pulse number and the meter pulse space irregularity. And then the CPU 13 computes the proving pass number Np necessary for obtaining the required repeatability (%) by substituting the repeatability value into an another predetermined function.

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