Pellet mill roll temperature sensing

A temperature sensing system, comprising:

• a rotor assembly disposed in a milling chamber of a pellet mill, the rotor assembly comprising:
• a cavity configured to accommodate a thermowell assembly;
• and
• a portion configured to accommodate a roll assembly configured to rotate within the milling chamber, the roll assembly comprising:
• a pellet mill roll;
• and a bearing configured to support the pellet mill roll on a roll shaft;
• a seal disposed between the bearing and the portion of the rotor assembly configured to accommodate a roll assembly;
• and
• a thermal sensor disposed in a thermowell, wherein the thermowell is in contact with the seal, and
• wherein the thermal sensor is configured to detect a temperature of the seal resulting from heat conducted from the bearing.

A method for sensing a temperature of a roll assembly for a pellet mill, the method comprising:

• receiving, by a controller, signals from a thermal sensor disposed in a cavity in a rotor assembly of the pellet mill, wherein the thermal sensor senses a temperature of a seal in contact with a bearing of a roll assembly;
• converting the signals to temperature values;
• comparing the temperature values to a threshold value;
• and
• in response to determining that the temperature values exceed the threshold value, generating, by the controller, a notification on a display device, and automatically performing an operation intended to decrease the temperature value.