1900-048 Robertshaw PILOT,THERMO-COUPLE/PILE T 451 THERMO

Robertshaw® thermocouples are the industry leader for gas heating and appliances. Their primary function is to ensure a standing pilot light is operative so that on a call for heat, the main burner gas will be properly ignited. Thermocouples are placed in gas applications to detect existence of a flame for safety purposes by shutting off the potential gas flow to a burner. The Robertshaw thermocouples are made of two different metals with various lengths. A thermocouple 18” (460mm) long has a lower resistance and higher electrical output compared to a 72” (1830mm) thermocouple which has a higher resistance (longer wire) and, therefore, lower electrical output. The 1900 Series are T-46 thermocouples which have a threaded nut attached and a tinnerman clip included.