TMA Q Series Getting Started Guide
44
Cleaning the Thermocouple
Sample residue and dirt may interfere with the accuracy of the thermocouple readings. To clean the thermo-
couple:
1.
Raise the furnace and rotate it clockwise to move it off to the side.
2.
Remove the stage shield by lifting it straight up. (This is a friction fit.)
3.
Remove the spring clip holding the thermocouple in place.
4.
Hold the thermocouple away from the probe assembly, and clean it gently with a low
flame using a hand-held burner.
5.
Reposition the thermocouple so that the tip of the thermocouple bends at a gentle 90°
angle and lies flat against the platform. It should be close to, but not touching the
sample as seen in the figure here. Note that a sharp bend could damage the thermo-
couple.
6.
Replace the spring clip to hold the thermocouple in place.
7.
Replace the stage shield.
