Temperature sensing device and method

Details Temperature sensing device and method Temperature sensing device and method

1974-09-19

1976-09-21

Weiffenbach, Cameron K.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

204 38B, 338308, 338309, 427102, 427103, 427124, 427125, 427126, 427343, 427352, 427383, 338300, B05D 512, H01C 704

Patent

active

039822184

ABSTRACT:
A temperature sensing device and a method of forming it is disclosed. A first film or coating of an adherent electro-conductive metallic oxide is applied over the exterior surface of a dielectric substrate. The metal oxide coating is thereafter thoroughly cleansed and a second coating or layer of a metal having a relatively high temperature coefficient of resistance is applied over the metallic oxide film so as to form a strong physical bond as well as a chemical bond therebetween. The composite so formed is fired at a temperature up to about 750.degree.C. If desired, the metal layer is thereafter suitably spiralled to provide the desired resistance and terminal leads are attached to the element. Also, if desired, the element is then coated with a dielectric protective coating.

REFERENCES:
patent: 2671950 (1954-03-01), Sukacev
patent: 2803729 (1957-08-01), Kohring
patent: 2915730 (1959-12-01), Davis
patent: 3217281 (1965-11-01), Griest et al.

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