Using PI Heater in Dusty, Damp, or Demanding Settings

https://heating-elements-pro.yousher.com/custom-silicone-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