Method and apparatus for determining internal temperature of an

Details Method and apparatus for determining internal temperature of an Method and apparatus for determining internal temperature of an

1978-02-06

1979-02-06

Swisher, S. Clement

Measuring and testing

Gas analysis

Moisture content or vapor pressure

G01K 1112

Patent

active

041377699

ABSTRACT:
A material visually changeable with changing temperature is incorporated internally in a transparent solid body having physical dimensions and thermal conductivity and diffusivity characteristics selected to provide a thermal analog of an object. The object and its analog are exposed to equivalent ambient conditions, concurrently, resulting in a visible change in the thermal analog corresponding to the internal temperature change in the object. The temperature indicating material may include a single transition temperature or multiple temperature indicating materials may be incorporated to display a plurality of transition temperatures and may be reversible or irreversible.

REFERENCES:
patent: 83264 (1868-10-01), Dimock
patent: 3769932 (1973-11-01), Romito
patent: 4077259 (1978-03-01), Foster

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