Automatic orifice calibrator

Details Automatic orifice calibrator Automatic orifice calibrator

1986-12-12

1988-03-08

Noland, Tom

Measuring and testing

Instrument proving or calibrating

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

73861, 738659, 364510, G01M 1900, G01F 2500

Patent

active

047292369

ABSTRACT:
An orifice is calibrated by passing air through the orifice and into a tube arrying a water column. The rate at which the water in the water column falls due to the passage of air through the orifice is measured to find the volumetric flow and elapsed time of air passing through the orifice. A computer is then used to subject the volumetric flow and elapsed time data to a regression analysis to produce an equation of displacement as a function of elapsed time. The first derivative of this equation is the flow rate. A correlation coefficient of the equation is printed, and the volumetric and mass flow rates may be printed if desired.

REFERENCES:
patent: 4331262 (1982-05-01), Snyder et al.
patent: 4501972 (1985-02-01), Foerster, Jr. et al.
patent: 4502318 (1985-03-01), Converse, III et al.
patent: 4509371 (1985-04-01), Wellman
patent: 4590790 (1986-05-01), Hicks et al.
patent: 4645174 (1987-02-01), Hicks
patent: 4671109 (1987-06-01), Halmi

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