Thermocouple Profiles
We have had some questions about the profile of the thermocouple groove, so I
thought I would pass along some pictures to clarify. There are other excellent
pictures of thermocouples on our website:
This is the profile of the groove into which the needle-type thermocouple is inserted.
It slides along the groove (within the diameter of the heater and bore) to the tip of
the heater and can monitor the temperature at any point along the profile of the
heater, depending on how far it is inserted. The below picture shows the tip of the
thermocouple inserted to monitor temperature at the hot tip of the heater.
The other great advantage of this construction is that the thermocouple can be
replaced without having to trash the heater. A thermocouple/conventional
cartridge heater usually loses the t/c first, but the entire assembly must be replaced.