Temperature sensor for high temperature and method of producing

Details Temperature sensor for high temperature and method of producing Temperature sensor for high temperature and method of producing

Filed on

1994-07-07

Date issued

1996-10-01

Examiner

Hoang, Tu

Patent Class

Electrical resistors

SubClass

Resistance value responsive to a condition

SubSubClass

Current and/or voltage

Other Related Categories

338 34, H01C 710

Type

Patent

Status

active

Patent number

055614116

Description

ABSTRACT:
According to the present invention, a temperature sensor for high temperature comprises a ceramic plate on the surface of which is provided a thermistor layer, electrodes connected to the thermistor layer, and the thermistor layer containing ZnCr.sub.2 O.sub.4. It is preferable that the thermistor layer contain a resistance conditioning agent composed of either ZnO or Cr.sub.2 O.sub.3 or both, and that it contains at least one of the sintering auxiliaries selected from the group: SiO.sub.2, CaO, MgO, CaCO.sub.3, kaolin, and talc. Accordingly, it is possible to obtain stable resistance-temperature characteristics at high temperature as well as superior heat resistance.

REFERENCES:
patent: 3958209 (1976-05-01), Soda et al.
patent: 4200970 (1980-05-01), Schonberger
patent: 5051718 (1991-09-01), Satake et al.
patent: 5142266 (1992-08-01), Friese et al.

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