Flowmeter proving device and method

Details Flowmeter proving device and method Flowmeter proving device and method

2006-04-18

2006-04-18

Garber, Charles (Department: 2856)

Measuring and testing

Instrument proving or calibrating

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

Reexamination Certificate

active

07028528

ABSTRACT:
A flowmeter proving device and method for use in proving a flowmeter in situ under operating conditions comprises a pair of standard Coriolis based mass flowmeters (2, 3) which are connected together in series by a conduit (7) connecting the fluid outlet (23) of the first flowmeter (2) to the fluid inlet (32) of the second flowmeter (3). A valved fluid supply conduit (4) is connected to the fluid inlet (22) of the first flowmeter (2), and a valved fluid return conduit (8) is connected to the fluid outlet (33) of the second flowmeter (3). These supply and return conduits (4and8) enable the device to be connected to a fluid flow line containing a flowmeter which is to be proved such that fluid flowing in the flow line will flow in series through the flowmeter to be proved and the two flowmeters (2and3) of the proving device. The device includes control means which is operative to use the second flowmeter (3) as a master meter to check the accuracy of the flowmeter to be proved, and the first flowmeter (2) as a check meter for the master meter (3).

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patent: 6502466 (2003-01-01), Cage et al.
patent: 05264476 (1995-12-01), None
Edmund Loy, “Flow Meter Proving”; Proceedings—39thAnnual Symposium on Instrumentation For The Process Industries; Texas A&M University, Dep. of Chemical Engineering, College Station, TX; 1984; pp. 53-57.

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