Space heaters are electrical heating devices that primarily heat gas streams. Its working principle is to heat the required medium from the initial temperature to the required temperature. The temperature can reach 800℃. Air heater is a kind of heater that is widely used. We commonly call it air heater. PLC control cabinet manufacturers are widely used in various industries, such as aerospace, weapons industry, chemical industry, etc. Air heaters have a wide range of applications, have no requirements for heated gas, and have a series of advantages. For example, the hot air produced by heating has no moisture and is not conductive, and the heated space heats up quickly. The temperature of the heated space involved here is controllable. Next, let’s learn about the heating temperature control of low-voltage distribution cabinet suppliers. The heating temperature control of heaters is divided into two categories, heater over-temperature control and heating medium temperature control.

1. Heater over-temperature control

A representative high-precision overheat protection temperature measurement point is set inside the electric heater. This temperature measurement point measures the surface temperature of the heating element. The temperature measurement element is a PT100 thermal resistor. The measured temperature signal is calculated by the temperature control instrument. Over temperature control. Once the heating element in the motor start control box overheats, the electrical control part immediately stops the power output of the electric heater and stops heating. This can effectively extend the service life of the electric heater.

2. Heating medium temperature control

A high-precision temperature sensor is set up in the heater to detect the internal temperature. The temperature measuring element is a PT100 explosion-proof thermal resistor. The measured temperature signal is transmitted to the temperature control instrument in the electrical control cabinet. The temperature control instrument operates to control and adjust the electric circuit. The heater output power makes the heater outlet temperature meet the user's temperature requirements.

The above is the analysis and introduction of heating temperature control of space heater.