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The electric heat tracing system can be divided into self-limiting electric heat tracing belt and constant power electric heat tracing belt, which are respectively used in different occasions and areas with different temperatures.

After the constant power electric tracing belt is energized, the output power is constant and does not change with the external environment, insulating materials and tracing belt materials, but a temperature controller is needed to control the temperature.

The self-limiting electric heating belt has the function of automatically limiting the temperature, and does not need a temperature controller to control the temperature, because when the temperature of the heating belt reaches a certain value, it will stop working, and if the temperature is lower than this value, it will automatically heat up again.

The characteristic of self-limiting electric tracing belt is that it can automatically limit the temperature when heating, and automatically adjust the output power with the temperature of the heated body without any additional equipment. When the temperature rises, the power automatically drops, and when the temperature drops, the power automatically rises, so that the circulating heating always keeps the liquid medium in the pipeline flowing normally without freezing. Therefore, as long as the selection of the appropriate temperature model of the self-limiting temperature products, there is no need to be equipped with a temperature controller.

The self-limiting electric tracing belt is a new generation of ribbon constant temperature electric heating product, which is widely used in many fields. It can be cut short at will or used in a certain length range, and allows multiple overlapping without worrying about high temperature, overheating and burning. It is widely used in civil, fire protection, electric power, petroleum, chemical, food, steel pipeline equipment, and has the advantages of preventing overheating, convenient maintenance, energy saving, and long service life.