Preservation temperature rise detecting method for cold food product preservation enclosure, involves quantifying rise in temperature, which occurs in enclosure, using determination of displaced volume of liquefied detection substance

摘要

The method involves partially liquefying a detection substance (6), placed in a zone of a cold enclosure, by an accidental rise in preservation temperature in the enclosure. A volume of the liquefied detection substance is displaced into another zone of the enclosure permitting a detection of the rise in temperature. The rise in temperature, which occurs in the enclosure, is quantified using a determination of the displaced volume of the liquefied detection substance. An independent claim is also included for a device for detecting a rise in preservation temperature of a cold enclosure.