The over temperature alarm (OT) is designed to prevent the furnace from heating up the work charge higher than the desired temperature. Mellen's over temperature alarm utilizes an independent digital set-point "hi-limit alarm" controller.

For when hotter is not better.

Standard Over Temperature

The over temperature alarm package is furnished with an appropriate thermocouple, thermocouple extension wire, and sufficient mechanical power contactors to interrupt power to the furnace in the event of an over temperature condition at the location of the over temperature sensor. The over temperature alarm is mounted in the main temperature control enclosure.

Integrated Over Temperature

Beyond the standard over temperature alarm, there also exists the Mellen integrated over temperature alarm. The integrated over temperature alarm uses the alarm in the controller to trigger the over temperature, whereas the standard over temperature has a separate alarm.

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