1. Types of temperature sensors
1. Thermocouple: Thermocouple is one of the most commonly used temperature sensors. It is composed of two different metals. When there is a temperature difference between the two ends, an electromotive force will be generated. This sensor has a fast response speed and a wide measurement range, and is suitable for high temperature environments.
2. Thermistor: Thermistor is a semiconductor component whose resistance value changes with temperature. Its advantages are high sensitivity and small size, which are suitable for occasions where precise measurement is required.
3. Infrared temperature sensor: Infrared temperature sensor measures temperature by receiving infrared radiation emitted by the object. It can measure without contacting the measured object, and is suitable for high temperature or difficult-to-reach environments.
2. Implementation of temperature monitoring
1. Installation location: The temperature sensor is usually installed on the heating plate or near the welding area to directly monitor the temperature during the welding process.
2. Signal transmission: The sensor converts the detected temperature signal into an electrical signal and then transmits it to the control unit. The control unit processes and analyzes the signal to determine whether the welding parameters need to be adjusted.
3. Feedback control: The control unit automatically adjusts the heating power according to the temperature data fed back by the sensor to keep the welding temperature within the set range. If the temperature exceeds the set range, the control unit will sound an alarm and take corresponding measures, such as stopping heating.
III. The importance of temperature monitoring
1. Ensure welding quality: By accurately controlling the welding temperature, the stability and consistency of the welding process can be ensured, thereby improving the welding quality.
2. Prevent equipment damage: Temperature monitoring can prevent equipment from being damaged due to overheating and extend the service life of the equipment.
3. Ensure operational safety: In a high temperature environment, temperature monitoring can detect abnormal conditions in time and avoid safety accidents caused by high temperature.
