How to avoid internal system failures in electric heaters
Electric heaters are widely used in equipment processing in the machinery industry, such as fully automatic packaging machines and bag making machines, which require electric heaters for product sealing and processing. The burning out of electric heater products and short circuits in the internal system of electric heaters are the most common faults in the above industries. Once a short circuit fault occurs in the internal system of the electric heater, if not promptly eliminated, in a better case, the internal system of the electric heater cannot guarantee the quality and use of pigment products. If the damage to the internal system of the electric heater is more severe, it will cause huge waste to the investment of manufacturers and suppliers, thereby affecting cooperation.
In packaging machines, the electric heater is generally controlled by the contacts of the temperature control instrument to switch the AC power supply inside the electric heater. When the temperature of the electric heater is lower than the set temperature, the contacts of the temperature control instrument in the electric heater close, and the temperature of the electric heater rises. When the temperature of the electric heater is higher than the set temperature, the contacts of the temperature control instrument in the electric heater open, and the temperature of the electric heater drops. The opening and closing of the contacts of the temperature control instrument in the electric heater ensure that the electric heater works within a certain temperature range. Once a burning out fault occurs in the electric heater, the operator cannot determine whether the electric heater is powered off due to normal temperature rise or due to a heater open circuit fault. Due to the thermal inertia of the heater, the temperature inside the electric heater takes a while to drop. Thus, when the operator of the electric heater finds that the product is defective, hundreds or thousands of products have already been wasted, affecting product quality. The electric heater open circuit detection device should be able to automatically identify the difference between power-off due to temperature rise and open circuit fault.
