Measurement of quantity of incompressible substance in a closed

Details Measurement of quantity of incompressible substance in a closed Measurement of quantity of incompressible substance in a closed

1997-06-06

2000-03-21

Williams, Hezron

Measuring and testing

Volumetric content measuring

73290B, 7386142, G01F 1700

Patent

active

060389192

ABSTRACT:
In a process and apparatus for delivering a processing substance from a storage vessel to a processing station, the storage vessel enclosing a processing substance storage space and being coupled to conduits which communicate with the storage space, the storage vessel and the conduits enclosing a volume which includes the storage space, a method and system for determining the quantity of processing substance in the storage space by: closing the volume enclosed by the storage vessel and the conduits; performing first and second pressure measurements for measuring the gas pressure in the volume when the volume contains respectively first and second quantities of gas; determining the difference between the first and second quantities of gas; and calculating the quantity of processing substance in the storage space on the basis of the volume, the difference between the first and second quantities of gas and the gas pressures measured during the first and second pressure measurements.

REFERENCES:
patent: 4393013 (1983-07-01), McMenamin
patent: 4553431 (1985-11-01), Nicolai
patent: 4840064 (1989-06-01), Fudim
patent: 5001924 (1991-03-01), Walter et al.
patent: 5535624 (1996-07-01), Lehmann
patent: 5760294 (1998-06-01), Lehmann
patent: 5810058 (1998-09-01), Kountz et al.
U.S. patent application serial No. 08/928,371, filed Sep. 12, 1997 (Atty. Dk. # 2041/PVD/DV).
U.S. patent application serial No. 08/922,510, filed Sep. 3, 1997 (Atty. Dk. #2036/PVD/DV).

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