Common Failure Causes in PI Heater and How to Prevent Them

https://thermal-elements.huicopper.com/custom-pi-heater-design-what-engineers-should-define-early

Many heating problems look like a power problem at first. In practice, the cause may be contact, heat loss, sensor position, or poor fit. A pi heater works best when these parts are planned together. The heater itself has limits and strengths