G - Physics – 01 – F
Patent
G - Physics
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G01F 15/02 (2006.01) B67D 7/16 (2010.01) F17C 13/02 (2006.01) G01N 9/24 (2006.01) G01N 27/22 (2006.01) G01N 33/22 (2006.01) B67D 5/16 (2006.01)
Patent
CA 2088784
2088784 9202788 PCTABS00010 A liquefied gas metering apparatus for use with liquefied gas dispensing equipment which conveys liquefied gas from a supply to a dispensing point and metering means (17). The metering apparatus has sensing means (50) to sense a measurable parameter of the liquefied gas related to the density of the liquefied gas particularly an electrical parameter such as the dielectric constant and to generate a sensing signal (77) indicative of the sensed parameter. The sensing means (50) includes a capacitive device (56) comprising spaced capacitor plates (71, 72) arranged to be immersed in the liquefied gas. Calculating means (76) is responsive to the sensing signal. The calculating means (76) being operative to control operation of the metering means (17) by compensating the determination by the metering means (17) of the metered liquefied gas dispensed during a dispensing operation for changes in gas composition.
Clark John Keith
Pahl Ronald Edwin
Gas Cylinder Services Pty Ltd
Gowling Lafleur Henderson Llp
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