Thermochromic level indicator

Details Thermochromic level indicator Thermochromic level indicator

1993-02-08

1994-06-28

Cuchlinski, Jr., William A.

Measuring and testing

Liquid level or depth gauge

Thermal type

G01F 2322

Patent

active

053236521

ABSTRACT:
A thermochromic level indicator for determining the level of a material inside a container includes a temperature responsive strip including at least two thermochromic materials of different opacities and transition temperatures, the thermochromic materials with greater opacity having relatively lower transition temperatures than the thermochromic materials with lesser opacities. Other accurate thermochromic level indicators are also disclosed.

REFERENCES:
patent: 3696675 (1972-10-01), Gilmour
patent: 4358955 (1982-11-01), Rait

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