Alarm device for kitchen range has identification electronics to effect activation of alarm or control relay as rates of change in temperatures and/or temperature difference, and/or temperature difference exceeds given value

摘要

The device has temperature sensors (6,9), which have substantially dissimilar contacts with the radiation heat of a range, and identification electronics (4) that identifies rates of change in temperatures of sensors and/or temperature difference between sensors and/or a rate of change in temperature difference between sensors. The identification electronics effects the activation of an alarm (5) or a control relay (2) as the rates of change in temperatures and/or the temperature difference and/or the rate of change in a temperature difference exceeds or exceed a given value.