System for monitoring fluent material within a container

Details System for monitoring fluent material within a container System for monitoring fluent material within a container

1987-04-06

1989-03-14

Noland, Tom

Measuring and testing

Volumetric content measuring

73290V, G01F 2328

Patent

active

048115959

ABSTRACT:
The acoustical energy output of a source is varied in frequency between limits to sweep a frequency band encompassing cavity resonance conditions which depend on the quantity of a fluent material within a tank excited by such acoustical energy. The volume of the fluent material is calculated from the excitation frequency registered during verified detection of resonance conditions, based on abrupt changes in signal characteristics and stored data relating to the geometry of the acoustic sensor arrangement through which the tank interior is monitored.

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