Determination of whether the electric tracing belt is damaged or not

　　As a kind of equipment that generates heat by heating heat-conducting materials with electric current, electric tracing tape has been widely used in heating fields such as heating, water pipes and floors. However, with the increase of service time, various faults may occur in the electric tracing belt, such as abnormal temperature, change of resistance value and abnormal current. This paper will introduce in detail how to judge whether the electric tracing belt is damaged, and provide some common troubleshooting methods and corresponding maintenance measures.

　　First, the working principle and common problems of electric heat tracing

　　The working principle of electric heat tracing is relatively simple. Heat conduction material is heated by electric current, thereby generating heat. This equipment is usually used to prevent pipes, containers, etc. from freezing in low temperature environment. However, the electric heat tracing belt may encounter various problems in use, such as abnormal temperature, change of resistance value and abnormal current. These problems will not only affect the normal operation of the equipment, but also lead to potential safety hazards.

　　Second, how to check whether the electric tracing is damaged?

　　Step 1 check the temperature

　　The surface temperature of electric tracing can be measured by infrared thermometer. If the temperature is too different from the normal temperature, it means that there may be a fault in the electric heat tracing. For example, if the temperature of electric tracing is obviously lower than the set value, it may be due to poor heating effect of electric tracing belt or other problems.

　　2. Check the resistance

　　Use multimeter to measure the resistance value of electric tracing. If the resistance value obviously deviates from the normal value, it indicates that there may be a fault in the electric heat tracing. For example, if the resistance value is too high or too low, it may be because the internal wiring of the electric tracing tape is damaged or there are other problems.

　　3. Check the current

　　Use ammeter to measure the current value of electric tracing. If the current value obviously deviates from the normal value, it indicates that there may be a fault in the electric heat tracing. For example, if the current value is too high or too low, it may be due to the unstable power supply of the electric tracing belt or other problems.

　　Three, common troubleshooting methods and corresponding maintenance measures

　　1. Electric heat tracing does not work

　　First, check whether there is power supply. If yes, check whether the fuse and switch are normal. If all the above are normal, it may be that the line connector is loose or bad, and it is necessary to reconnect or replace the line.

　　2. Electric tracing has leakage.

　　Check whether the wiring is correct. If it is correct, the electric heat tracing needs to be replaced or disassembled for maintenance. Leakage will not only affect the normal operation of electric tracing, but also lead to potential safety hazards, so it must be dealt with in time.

　　3. The heating effect of electric tracing is not good.

　　Check whether the resistance value and current value are normal, and whether there is water or dust on the surface of electric heat tracing. After cleaning and maintenance, if the problem still exists, it may be necessary to replace the electric heat tracing.

　　Four, how to avoid the damage of electric heating?

　　1. Correct installation

　　When installing, wire correctly according to the instruction manual, and be careful not to overstretch or bend the electric heat tracing circuit. Correct installation can not only ensure the normal operation of electric heat tracing, but also prolong its service life.

　　2. Avoid overload

　　Avoid overload when using, and don't overload the electric heat tracing, otherwise it will be easily damaged. Proper load can not only ensure the normal operation of electric heat tracing, but also prolong its service life.

　　3. Regular inspection and maintenance

　　Conduct regular inspection and maintenance of electric heat tracing to keep it clean and dry. Regular inspection and maintenance can not only find and solve problems in time, but also prolong the service life of electric heat tracing.

　　Through correct inspection methods and effective maintenance measures, we can judge whether the electric tracing is damaged, and repair and maintain it in time. Pay attention to safety in use to avoid overload and damage. Only in this way can we ensure the normal operation of the electric heat tracing system, prolong its service life and improve its working efficiency.