Method and apparatus for calibrating a flowmeter using a master

Details Method and apparatus for calibrating a flowmeter using a master Method and apparatus for calibrating a flowmeter using a master

1990-03-19

1991-12-10

Lall, Parshotam S.

Boots, shoes, and leggings

73 1H, 73 3, 7386101, 364510, G01C 2500, G01F 1502, G01F 2500, G01F 100

Patent

active

050724169

ABSTRACT:
A double cycle prover is used to calibrate meters which require long proving runs. A small volume or piston prover and a master flowmeter, are coupled in series with the meter under test, then the master flowmeter is calibrated against the small volume prover, and the meter under test is calibrated against the master flowmeter. A signal processor combines the proving cycles, to relate the small volume prover to the meter under test. A density meter is connected to the flow channel, if the meter under test is a mass flowmeter, and the signal processor uses the density measurement to relate the mass flow measurement of the meter under test with the volume flow measurement of the master flowmeter.

REFERENCES:
patent: 3635084 (1972-01-01), Lamphere
patent: 4253156 (1981-02-01), Lisle et al.
patent: 4419898 (1983-12-01), Zanker et al.
patent: 4566307 (1986-01-01), Boykin
patent: 4649734 (1987-03-01), Hillburn
patent: 4821557 (1989-04-01), Beeson
patent: 4827430 (1989-05-01), Aid et al.
patent: 4885943 (1989-12-01), Tootell et al.

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