Measurement of mass of fluid in a container

Details Measurement of mass of fluid in a container Measurement of mass of fluid in a container

1990-05-08

1992-03-03

Cuchlinski, Jr., William A.

Measuring and testing

Liquid level or depth gauge

Thermal type

73149, 244158R, 374 54, G01F 2322, B64G 100

Patent

active

050921703

ABSTRACT:
The mass of fluid remaining in a container 10 is determined by switching on a series of heating elements 14 and sensing the temperature of the container and contents over a period of time using sensor 16, thereby to deduce the thermal time constant. The thermal time constant is used to determine the mass of the remaining fluid contents from a look-up table or other means. In an alternative arrangement, the thermal response on cooling may be used in a similar manner.

REFERENCES:
patent: 3922658 (1975-11-01), Harper et al.
patent: 3955416 (1976-05-01), Waiwood
patent: 4729245 (1988-03-01), Hansman, Jr.
patent: 4805454 (1989-02-01), LeVert
patent: 4825383 (1989-04-01), Ory
patent: 4898030 (1990-02-01), Yeh

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