How Operating Conditions Influence PI Heater Design Choices

https://thermal-innovation-hub.lucialpiazzale.com/how-etched-foil-construction-works-in-a-mica-heater

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