PI Heater Prototyping: What to Review Before Finalizing the Design

https://thermal-technology-center.timeforchangecounselling.com/how-to-choose-a-silicone-heater-for-industrial-equipment

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