Resettable reusable time temperature recording thermometer

Details Resettable reusable time temperature recording thermometer Resettable reusable time temperature recording thermometer

1988-07-25

1989-07-04

Cuchlinski, Jr., William A.

Thermal measuring and testing

Temperature measurement

Composite temperature-related paramenter

374107, 374186, 368327, G01K 304

Patent

active

048446220

ABSTRACT:
This instrument for tracking and recording temperature excursions in commerical refrigeration environments comprises a closed vessel having two chambers and metering orifice therebetween and a time measurement and recording means including a scale to indicate the total time duration of liquid flow through the orifice from one chamber to the other; and as an assembly of such vessels with fill liquids of different freezing point tempertures this instrument has relatively broad temperature range monitoring capability.

REFERENCES:
patent: 3175401 (1965-03-01), Gelomacher
patent: 3242733 (1966-03-01), Johnson
patent: 3859856 (1975-01-01), Keele et al.
patent: 3878722 (1975-04-01), Crites
patent: 4028944 (1977-06-01), Erb
patent: 4488822 (1984-12-01), Brennan

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