Managing Heat Loss Around a PI Heater for More Stable Operation

https://precision-surface-heat.publishlane.com/posts/how-to-choose-a-mica-heating-plate-for-high-temperature-applications

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