Flowmeter proving apparatus

Details Flowmeter proving apparatus Flowmeter proving apparatus

1993-03-19

1994-06-07

Raevis, Robert

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G01F 2500

Patent

active

053178955

ABSTRACT:
A flowmeter proving apparatus for obtaining a reliable flow meter factor in a short time, using a flow-meter having a non-uniform pulse output with a small volume power. The flowmeter to be proved is connected in series with a small volume prover, using a by-pass valve. A CPU calculates irregularities 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. The CPU then computes the proving pass number N.sub.p necessary for obtaining the required repeatability by substituting the repeatability value into another predetermined function.

REFERENCES:
patent: 4253156 (1981-02-01), Lisle et al.
patent: 4406152 (1983-09-01), Palmer et al.
patent: 4631951 (1986-12-01), Bohm
patent: 4766759 (1988-08-01), Cohrs et al.
patent: 4996869 (1991-05-01), Cohrs et al.
patent: 5052211 (1991-10-01), Cohrs et al.
Manual of Petroleum Measurement Standards Chapter 4-Proving Systems Section 3-Small Volume Provers Measurement Coordination Department, First Edition, Jul. 1988 American Petroleum Institute.

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