Self-limiting electric heating and constant power electric heating are two commonly used electric heating systems, and they have significant differences in heating principle, temperature control and application range.
Self-limiting electric heat tracing, as the name suggests, has the function of automatically limiting the temperature. When the temperature reaches the set upper limit, the resistance value of PTC will automatically increase and the current will decrease, so as to automatically reduce the heating power and effectively prevent overheating. This kind of heat trace can automatically adjust the temperature with the change of the outside temperature, and has a high degree of intelligence. It is suitable for all kinds of complex environments and pipelines, tanks and other occasions that require precise temperature control.
In contrast, a constant power heating element is a continuous and constant heating element that maintains a constant power and temperature throughout use. This type of heat trace usually uses an alloy resistance wire as a heating element, which is fixed and insulated by an insulating layer and a protective layer. Due to its constant heating power, it is suitable for long pipes or large areas of heat tracing places. At the same time, due to its stable heating temperature, it is also suitable for occasions that require higher temperatures, such as chemical, pharmaceutical and other fields.
In practice, it is necessary to select the right electric heat tracing system according to the specific needs. For occasions that require precise temperature control and intelligent management, self-limiting electric heat tracing is a better choice; For places that require continuous and stable heating and large-area heat tracing, the constant power electric belt has more advantages. In conclusion, understanding the differences between the two and choosing the right one is essential to ensure the safe, stable, and efficient operation of an electric heat tracing system.