Hot spot thermometer

Details Hot spot thermometer Hot spot thermometer

1976-08-04

1978-06-06

Queisser, Richard C.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73349, 73350, 73357, G01K 548

Patent

active

040928640

ABSTRACT:
A thermometer unit for monitoring the temperature of a fluid cooled electric transformer, the unit having a ceramic body insertable between the coils of the transformer winding immersed in cooling fluid in the transformer case. A nylon element responsive to heat changes is confined in the interior of the body and is adapted to expand according to developing heat changes. A flexible tubing having a loop portion fronting a tapered end of the nylon element is filled with a fluid which is caused to oscillate in the tubing accordingly as a rocker arm alternate actuates a pair of associated bellows. As the nylon element expands in response to a temperature rise, it squeezes the tubing causing a load to be placed upon the rocker arm which is indicative of the corresponding temperature change.

REFERENCES:
patent: 2374055 (1945-04-01), Treanor
patent: 3540650 (1970-11-01), Boekelman et al.
patent: 3960017 (1976-06-01), Romanowski

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