Self Heating

When pressure sensors equipped with a current loop are used, self-heating may occur due to their inherent design. This heat is produced when electric current flows through an electrical conductor or semiconductor. The effect of heat formation is based on Joule’s first law, whereby a voltage is generated through the electrical resistance of the conductor. The entire electrical conductor then becomes affected by this temperature rise, where that electric heat created is also known as “Joule heating.”

A corresponding investigation has shown that self-heating can lead to accuracy fluctuations in measurements. The extent of these fluctuations depends on the quality of the respective sensor, as well as the specific application environments and conditions.