Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1996-05-17
1998-01-20
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
057103704
ABSTRACT:
In a flow measurement system comprising a primary flow sensor and a secondary electronic conversion apparatus for converting high and low fluid pressure signals from the primary flow sensor to an electronic signal output representative of fluid flow, a process for calibrating the system as an integral unit, comprising the steps of applying a plurality of known reference fluid flow rates to the primary flow sensor over the system's operative range of flow conditions, sensing the electrical output of the secondary electronic conversion apparatus for each of the said plurality of reference fluid flow rates, establishing a correction factor for each of said recorded values of electrical output which will tend to linearize the relationship between fluid flow rate and the electrical output of the measuring system, and storing the correction factors in non-volatile memory in a microprocessor which is part of the secondary electronic conversion apparatus.
REFERENCES:
patent: 2869367 (1959-01-01), Moore
patent: 4836019 (1989-06-01), Hagen et al.
patent: 5111827 (1992-05-01), Rantala
patent: 5479812 (1996-01-01), Juntunen et al.
patent: 5548990 (1996-08-01), Northedge
Dieterich Standard Annubar Flow Measurement Systems brochure, pp. 2, 3 and 9.
Dieterich Standard Diamond II Annubar Flow sensors catalog, p. 3.
Dragnea Gabriel
Garnett John Everett
Gray Robert James
Shanahan Eugene Miles
Dieterich Technology Holding Corp.
Hanes Richard W.
Raevis Robert
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