Combined pressure and temperature correction apparatus for...

Details Combined pressure and temperature correction apparatus for... Combined pressure and temperature correction apparatus for...

G - Physics

01

F

73/134

G01F 15/04 (2006.01)

Patent

CA 1059792

COMBINED PRESSURE AND TEMPERATURE CORRECTION APPARATUS FOR GAS METERS Abstract of the Disclosure A self-contained unit integrally operable in conjunction with a gas meter registers equivalent standard gas volume by correcting actual gas volume for both pressure and temperature. A magnetic couple provides a drive input to the correction unit at a rate proportional to the operational rate of the meter. Separate temperature and pressure sensitive mechanisms exposed to the gas flow each provide a linear displacement proportional to changes in their absolute condition. Respective displacement of each is supplied independently to a dual input single output multiplying mechanism from which an integrated output serves to position a limiting cam in angular correlation therewith. Posi- tion of the cam effectively modifies the drive input from the magnetic couple through a crank and clutch arrangement that drives the corrected register at a rate correlated to the inte- grated function of absolute pressure and temperature of the metered gas.

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