Temperature sensors with improved operating characteristics util

Details Temperature sensors with improved operating characteristics util Temperature sensors with improved operating characteristics util

1975-04-02

1976-04-20

Queisser, Richard C.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

317133, 323 75S, 324 34TE, G01K 738

Patent

active

039509931

ABSTRACT:
Temperature sensors utilizing either one pair or two pair of inductive magnetic elements are disclosed. The inductive elements of each pair are constructed of different magnetic materials so that the permeability of the two elements change at different rates with respect to temperature. A plot of inductance vs. temperature for the two elements, thus, provides curves which intersect at the temperature which is to be sensed. Permanent magnets are positioned adjacent the temperature sensing elements in order to provide a mechanism for adjusting the cross-over temperature point of the magnetic elements.

REFERENCES:
patent: 2691130 (1954-10-01), Ingersoll
patent: 2756595 (1956-07-01), Rathenau et al.
patent: 3026471 (1962-03-01), Canfor et al.
patent: 3154947 (1964-11-01), Poshadel et al.

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