Full Overheating Protection

摘要

An innovative heating element technology uses electronic sensors to prevent appliance parts from overheating. Developed by Ferro Techniek of the Netherlands and available in North America from Davidon Industries, the technology is called E-FAST, which stands for electronic full sensor technology. The patent-pending concept is being used in thick-film heating elements to detect electrical current generated by an overheated part of a heating track. According to Gerd Kloppers, Ferro's development engineering manager, temperature protective devices such as bimetal switches, thermal fuses and negative temperature coefficient thermistors (NTCs) are limited in their performance by providing only local protection and delayed response. Designed as an integral part of the heating element, the sensor technology is said to offer full-area rapid response, overcoming challenges such as loss of thermal contact, delaminating and the risk of misplacing the sensor due to hot spots or thermal drift.