In general, the thermal resistance in the application process is relatively smooth, but sometimes there may be failures, and the most common is open circuit and short circuit. The circuit breaker is usually caused by the thermal resistance wire is too thin. Let's briefly understand the short circuit and the circuit breaker of the thermal resistance.

Open circuit and short circuit can be easily identified by a multimeter. With a multimeter. × 1Ω ” If the resistance value measured is less than R0, it may be short circuit; If the measurement indicator is infinity, then a break can be determined. The short circuit is easier to deal with, as long as it does not affect the length and thickness of the resistance wire, find the short circuit to dry, strengthen the insulation can be. If it is open, then the processing must be *** to change the length of the resistance wire so as to affect the resistance value, so only to replace the new resistance body, but to use welding repair, after welding to verify after the use of qualified.

In addition, if the display value of the thermal resistance display instrument is lower than the actual value or the value is unstable, then there may be dirt in the protection tube, so the main removal of dirt can be. But if the indication appears negative, then it may be the thermal resistance wiring error or thermal resistance short circuit, so as long as the correction of wiring, deal with the short circuit can continue to use.