Oven temp sensors....

Oven temp sensors sense the temperature is the oven cavity and the temp sensor changes resistance, this change in ohm resistance tells the oven control what temperature the oven cavity at and tells the control to shut off the element or turn it back on. The most common temp sensors used today ( *not all ) are approx 1000-1100 ohm resistance at room temperature ( 70ºF )

Some ohm readings and there temperature:

Degrees F    -   Resistance

            100 - 1143 ohms

             200 - 1350 ohms

             300 - 1553 ohms

             350 - 1654 ohms

             400 - 1753 ohms

            500 - 1949 ohms

Oven temp sensors and other parts help

*Some different sensor ohm readings at room temp. GE's WB21X158 ( bottom one on the picture ) is approx 16 ohms at room temperature and at 350ºF it is 29~33 ohms.