The electric heating cable countryside to dewater the sludge to have a kind of box material, need to consider in the winter to freeze the situation, so the material temperature can't be lower than 5 degrees Celsius, the winter temperature is relatively low, especially in the northern region, it is necessary to install the heat insulation facility to dewater the sludge.

 　　                   Through the solution of the site and the solution of the actual situation, can choose the tropical self-limiting temperature electric heating cable fire retardant low temperature protection type. The self-limiting temperature electric heating tracing cable has the PTC characteristic, namely the temperature coefficient positive effect, namely the resistivity of the material with the rise of temperature in a certain temperature range increases sharply. At the same time, the electric heat cable can cut off or extend in a certain range, allow more than one overlap does not consider the low temperature hot spot and burning, and the low temperature self-limiting temperature electric heat trace cable can adhere to the temperature does not exceed 65 degrees Celsius, completely satisfy the heat demand of the dewatering sludge pool.

 　　                    Tanks are generally cylindrical and the device is more appropriate to use spiral windings. As long as the self-limiting temperature heating cable is close to the outer wall of the water tank, the tape is fixed with aluminum foil tape or pressure sensitive adhesive. After the system is installed, start the test can be winter is coming at present, self-limiting temperature heat trace cable tape is not only used in storage tanks, and widely used in petroleum, chemical, electric power and other industrial pipeline insulation, insulation efficiency is very high. How to install the temperature sensor?

 　　                      In order to the requirement of high temperature control accuracy in some applications, it is necessary to install a temperature controller in front of the power supply box of the electric traceable heat, and the probe of the temperature control box is exposed in the surrounding environment. When the ambient temperature is lower or higher than the set temperature, the power supply can be automatically turned on or off to the electric heat tracing cable. The upper cover of the temperature controller can adjust the temperature setting.