Choosing a Control Method for a PI Heater in Automated Equipment

https://thermal-solutions-journal.scriblorax.com/posts/how-to-control-the-temperature-of-a-mica-heating-plate

In sensors, a pi heater must deliver heat in a controlled way. It uses a thin resistive foil circuit laminated in polyimide film. One useful trait is fast response. Still, local hot spots can change the result