Overtemperature alarm relay are small, but in the application of vacuum freeze drying machine has played a very important role.
the vacuum freeze drier in the sublimation stage, when & other;
Heating control & throughout;
The function fails, the heat conduction oil temperature reached set value, and electric heating won't cut off on their own, continue to heat, the temperature rising.
When the temperature reaches overtemperature alarm relay on the value of time (
Generally set at 70 ℃)
, the relay will be forced to cut off the electric heating.
Or electric heating pipe insulation materials will due to overheating and burning temperature.
Overtemperature alarm relay in the play the role of the dual protection.