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US 4,674,316 AGranted
Calibration system for mechanical gas volume corrector
AssigneeThe Singer Company
InventorsCharles W. Albrecht, Malcolm W. Cornforth
Life of this patent
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AssigneeThe Singer Company
InventorsCharles W. Albrecht, Malcolm W. Cornforth
Estimating the term…
A calibration system for a mechanical gas volume corrector which has a first shaft turned at a rate corresponding to the otherwise uncorrected volumetric flow rate through the meter, a second shaft, a variable ratio transmission coupled between the first and second shafts, and a mechanism for altering the ratio of the transmission in response to changes of a physical condition of the gas. The calibration system includes an arrangement for applying a representation of a reference state of the physical condition to the ratio altering mechanism, and indicator for indicating a fixed number of revolutions of one of the shafts, an arrangement for determining the number of revolutions of the other of the shafts corresponding to the fixed number of revolutions of the one shaft, and a calculator for determining and displaying the ratio of the other shaft revolution number to the fixed number. The calibration system also includes an adjustment mechanism for changing the zero setting and the span (or gain) of the ratio altering mechanism.
In combination with a gas meter temperature corrector having an input shaft adapted to be turned at a rate corresponding to the volumetric flow rate through the meter as uncorrected for temperature, an output shaft, a variable ratio transmission coupled between the input and output shafts, and means for altering the ratio of the transmission in response to temperature changes in the gas, an arrangement for determining the accuracy of the corrector comprising:
In combination with a gas meter pressure corrector having an input shaft adapted to be turned at a rate corresponding to the volumetric flow rate through the meter as uncorrected for pressure, an output shaft, a variable ratio transmission coupled between the input and output shafts, and means for altering the ratio of the transmission in response to pressure changes in the gas, an arrangement for determining the accuracy of the corrector comprising:
In combination with a gas meter volume corrector having a first shaft adapted to be turned at a rate corresponding to the otherwise uncorrected volumetric flow rate through the meter, a second shaft, a variable ratio transmission coupled between the first and second shafts, and means for altering the ratio of the transmission in response to changes of a physical condition of the gas, an arrangement for determining the accuracy of the corrector, comprising:
Dependencies are inferred from the claim text.