Fluke 9112A - Manual (Page 22)

5.2.2 Temperature Control and Cutout Sensor
The temperature control sensor is a Type K Thermocouple as indicated. This
sensor is 3/16 inch in diameter and 12 inches long. Its location in the block is
important and can cause the gradient in the block to move back and forth. The
probe is normally inserted as shown in Figures 2 and 3.
The cutout sensor is the same as the control sensor, 12 inches long. This sensor
is inserted through a tube in the back of the block. Its location here helps pre-
vent the heater elements from overheating thus prolonging their life.
9112A Calibration Furnace
User’s Guide
20
Figure 3 Back View