I bought a PID to monitor stove top temperature and was surprised at the temp differences between IR, k-probe, and magnetic thermometers. At first I thought the new PID was at fault but confirmed it was right with the Fluke meter. Example: At 300 deg on PID the magnetic stove top was around 400deg and one of my IR's read 300 and the other read about 400. So I went and got wifes digital probe and confirmed it was 300 deg. At a stove top temp of 400, same thing. Magnetic was 100 deg higher. At what I thought was 500 deg is really only 400 and that's where my stove seems to start working well. Hard to believe some people are running their stoves at 700+ deg. Now that's hot.