A Practical OEM Checklist for Specifying a PI Heater

https://mica-heater-journal.cloudhinter.com/posts/what-determines-the-heating-performance-of-an-ito-glass-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