Temperature sensitive transducer with a resonant bimetal disk

Details Temperature sensitive transducer with a resonant bimetal disk Temperature sensitive transducer with a resonant bimetal disk

1983-04-21

1985-09-17

Frankfort, Charles

Thermal measuring and testing

Temperature measurement

By a vibratory effect

374205, 116221, G01K 1126

Patent

active

045417318

ABSTRACT:
A temperature sensing transducer has a mechanically vibrating member whose rigidity varies with temperature, changing the resonant frequency. An output signal is generated having a frequency controlled by the vibrating member. The rigidity is caused to vary with temperature by making the vibrating member from a material whose modulus of elasticity is sensitive to temperature changes in the desired measurement range. Also by making the vibrating member of a bimetal shaped as a frusto-conical disk, the rigidity of the disk changes with temperature due to internal strains.

REFERENCES:
patent: 2447816 (1948-08-01), Rieber
patent: 3047818 (1962-07-01), Regis
patent: 3318152 (1967-05-01), Thompson et al.
patent: 3479536 (1969-10-01), Norris

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