Lincoln Impinger Conveyor Ovens 1100 Series - Manual (Page 11)

NOTE: The Conveyor Control uses a sensor and magnet, mounted on the
Conveyor Motor that senses when the motor is not turning. If the motor is
not turning, the Time/Temp Display will show “—:— “ in the window.
The temperature portion of the display uses a Thermistor Probe to sense
oven temperature. The Thermistor outputs a resistance proportional to
oven temperature. This resistance is then converted by the Display into a
temperature reading.
OR:
The temperature potion of the display uses a “J” type thermocouple to
measure oven temperature. The thermocouple generates D.C. millivolts
proportional to oven temperature. This millivolt reading is then converted
by the display into a temperature reading.
Impinger II - 1100 Series Service Manual - International 11