Device for detecting the crossing of a temperature threshold comprising a shape memory alloy element.

摘要

P The element (1) in shape memory alloy has a geometrical configuration which evolves within a transition zone extending over a certain temperature range in which is the temperature threshold to be detected . A locating means (2) is connected to the element (1), so as to translate visually by an irreversible modification of its configuration, the crossing of the temperature threshold, under the effect of a change in shape of the element (1) in shape memory alloy. The device can be used in particular for the thermal labeling of frozen products. /P