Measuring and testing – Liquid level or depth gauge – Thermal type
Patent
1988-05-02
1989-01-10
Cuchlinski, Jr., William A.
Measuring and testing
Liquid level or depth gauge
Thermal type
374 29, G01F 2322
Patent
active
047964715
ABSTRACT:
Heat is used to determine liquid level in a storage tank. An elongated heater that produces heat uniformly along its length is mounted vertically on the outside surface of the tank to extend substantially the full height of the tank. An elongated thermopile having a multiplicity of hot and cold junction pairs uniformly spaced along its length covers the heater so that heat from the heater travels in two different opposite directions, namely a first portion of the heat travels from the heater through the tank wall and into the tank; the other portion of the heat travels in the opposite direction from the heater through the thermopile and then into the ambient atmosphere. A meter indicates the amount of heat flow through the thermopile and its indication changes with change in level of the liquid in the tank.
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Cuchlinski Jr. William A.
Mauritz Frank E.
Thermonetics Corporation
Will Thomas B.
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