Thermocouple/Heat juriyaA keɓewa tsaro ƙofar canza zafi juriya siginar ko thermocouple / millivolt siginar daga haɗari yankin zuwa 4-20mA siginar da keɓewa canja wuri fitarwa zuwa aminci yankin. Kayan yana buƙatar samar da wutar lantarki mai zaman kansa, wutar lantarki, shigarwa da fitarwa uku suna keɓewa, ƙarfin rufi na yanzu da na ba yanzu ba har zuwa 2500V.