this is a standard 30mV class thermocouple

also identified as the Parker Sporlan LAC-4-100

or cracked electrode supports are primary indicators

it ensures the mechanical integrity of the original system design

Operation should be checked during pre-season maintenance to confirm the condensate drain heater is drawing appropriate amperage when temperatures drop

Ashcroft XR0251F11 Stem 319825-402 this is a standard 30mVThe Ashcroft XR0251F11 Stem is a high precision bimetal thermometer engineered for demanding HVACR and industrial applications. This robust temperature gauge features a 3 inch dial for clear visibility and a 2. 5 inch stem designed for accurate immersion in piping or tanks. Specifically optimized for low temperature monitoring, it covers a wide span from 70 to 150 degrees Fahrenheit, making it an essential component for refrigeration, liquid lines,