Temperature sensing alarm has no radiation

Recently, pregnant women have a friend asked me a question: temperature alarms have radiation? The original at her work place, above the seats just install a temperature alarm, she worried about radiation, long time sitting below will affect the health of the fetus.

In the previous paper, we have discussed the household smoke alarm has no radiation problem, we analyzed the common types of household smoke detectors and their working principles, the final conclusion is: household smoke alarm small amount of radiation, have adverse effects on the human body will not. So, today we also from the working principle of temperature sensor alarm analysis shows that temperature sensing alarm whether radiation.

Temperature sensing alarm consists of differential temperature and constant temperature two. Constant temperature and temperature sensing alarm device by using a double metal sheet, the fusible metal, thermocouple thermistor resistance and other components, in a specified temperature value is generated on the fire alarm signal. Differential temperature and temperature sensing alarm temperature sensing device is the air film box, thermosensitive semiconductor resistance device, when the environmental temperature rise rate too fast will send out alarm signal. We can see, part of these two temperature sensing alarm basically are semiconductor, sheet metal and other objects, these objects do not have radiation, so you can rest assured, temperature sensing alarm when no radiation.