1. The position of the heated required in the thermocouple's tip 3 to 5mm, do not install the total tip into flame,

or else will cause thermoelectric power decreased and cutting lifetime.

2. Fixed position, Positive and Negative thermocouple wire, as can as possible to maintain good heat dissipation,

so as the mounting plate and thermocouple assembly to resuce the accumulation of heat, so that shorten the valve drop out time.