EP 0542798 A4 19940105 -
Publication
Application
Priority
AU PK155490 A 19900803
Abstract (en)
[origin: WO9202788A1] 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.
IPC 1-7
IPC 8 full level
G01F 1/86 (2006.01); B67D 7/16 (2010.01); F17C 13/02 (2006.01); G01F 15/02 (2006.01); G01N 9/24 (2006.01); G01N 27/22 (2006.01); G01N 33/22 (2006.01)
CPC (source: EP)
B67D 7/16 (2013.01); F17C 13/02 (2013.01); G01F 15/02 (2013.01); G01N 9/24 (2013.01); G01N 27/221 (2013.01); G01N 33/225 (2013.01); F17C 2205/0326 (2013.01); F17C 2205/0335 (2013.01); F17C 2221/033 (2013.01); F17C 2221/035 (2013.01); F17C 2223/0153 (2013.01); F17C 2223/033 (2013.01); F17C 2250/0421 (2013.01); F17C 2250/0426 (2013.01); F17C 2250/0491 (2013.01); F17C 2250/0495 (2013.01); F17C 2260/024 (2013.01); F17C 2265/017 (2013.01); F17C 2265/065 (2013.01); F17C 2270/0139 (2013.01)
Citation (search report)
- [X] US 4835456 A 19890530 - LIU FREDERICK F [US], et al
- [X] FR 2400188 A1 19790309 - AGEFKO KOHLENSAEURE IND [DE]
- [X] FR 2447012 A1 19800814 - FAURE HERMAN ETS
- See references of WO 9202788A1
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
WO 9202788 A1 19920220; CA 2088784 A1 19920204; EP 0542798 A1 19930526; EP 0542798 A4 19940105; JP H05509160 A 19931216; KR 100231452 B1 19991115; NZ 239255 A 19930526
DOCDB simple family (application)
AU 9100341 W 19910802; CA 2088784 A 19910802; EP 91913900 A 19910802; JP 51270991 A 19910802; KR 930700302 A 19930203; NZ 23925591 A 19910802