Protected Thermocouples

May 28, 2025
FEATURES FEATURES Home> All Features> Protected Thermocouples Protected Thermocouples Benefits of L&L's Protected Thermocouples The Protection Tube extends past the tip, protecting the tip from damage while loading the kiln Keeps the oxide dust from the thermocouple tip from getting into the kiln while firing. (Any dust should still be vacuumed when doing the normal cleaning of the kiln). Protects thermocouples from excessive radiation error from the nearby hot elements. Reduces zone control errors because the tips of all thermocouples are equally exposed to the heat of the kiln while still being as protected as possible. Size and Description The protection tubes are 3/4” in outside diameter with a 1/2” inside diameter (which accommodates the standard 8 gauge Type K thermocouple). There is a flange on the back end of the thermocouple to prevent it from going into the kiln. The tube is open but protrudes past the delicate tip of the thermocouple. Calibrating the Kiln For ceramic work we recommend calibrating the kiln performance with cones and adjusting the control to match the performance of the firing cones. The most important thing is to get a consistent reading from the thermocouples. Details on why this feature changed and how to change over an older kiln

Thermocouple Protection Tube

The Protection Tube extends past the tip, protecting the tip from damage while loading the kiln
Keeps the oxide dust from the thermocouple tip from getting into the kiln while firing.
(Any dust should still be vacuumed when doing the normal cleaning of the kiln).
Protects thermocouples from excessive radiation error from the nearby hot elements.
Reduces zone control errors because the tips of all thermocouples are equally exposed to the heat of the kiln while still being as protected as possible.

The protection tubes are 3/4” in outside diameter with a 1/2” inside diameter (which accommodates the standard 8 gauge Type K thermocouple).
There is a flange on the back end of the thermocouple to prevent it from going into the kiln.
The tube is open but protrudes past the delicate tip of the thermocouple.

For ceramic work we recommend calibrating the kiln performance with cones and adjusting the control to match the performance of the firing cones. The most important thing is to get a consistent reading from the thermocouples.

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