What Is a Temperature Sensor?
Temperature Sensor is a device that detects and notifies a change in temperature.
The alarm is triggered when the temperature detected by the temperature sensor rises above or below a set temperature. Temperature Sensors are equipped with a special built-in sensor that detects the ambient temperature in real time. With high sensitivity and quick response speed, the sensor provides accurate temperature data in a short time.
An additional feature of the sensor is that it emits an alarm when it detects an abnormal rise or drop in temperature. The alarm draws people’s attention by means of a sharp sound or visual indication. This allows for quick response to abnormal temperature conditions.
Uses for Temperature Sensors
Temperature alarms are commonly used for the purpose of sending out an alarm and shutting down equipment to prevent over-temperatures in heaters.
There are three main types of applications: industrial use in factories and vinyl greenhouses, household use to alert the user of abnormal temperatures in refrigerators by means of lamps, sounds, and buzzers, and research use in scientific research and experiments.
1. Industrial Use
Temperature Sensors play an important role in industrial facilities such as factories and warehouses. For example, by detecting abnormal temperature rises that occur during the operation of production lines or machines, they can provide early warning of machine breakdowns or fire risks. This can prevent interruptions and extensive damage to the production process.
Additionally, it is widely used in the automotive industry. Automotive engines operate at high temperatures and require proper cooling. Temperature Sensors are integrated into the engine cooling system to monitor the temperature of the coolant. If an abnormal temperature rise is detected, an alarm is issued. This prevents overheating and damage to the engine and provides early detection of malfunctions.
2. For Home Use
Temperature Sensors are increasingly being used in homes and apartments. For example, if an abnormal temperature rise is detected in a high-temperature environment such as a kitchen or bathroom, it can help detect fires at an early stage and prevent accidents. Especially in homes with elderly people and children, the installation of Temperature Sensors is recommended as part of safety measures.
3. For Research
Alarms using platinum resistance thermometers, which have a wide range of temperatures to be used, are also used for research purposes. Examples are cell culture rooms and animal testing facilities. Since these studies require that a specific temperature range be maintained, Temperature Sensors monitor temperature rises and drops and issue an alarm when an abnormal temperature change is detected. This allows researchers to respond immediately, thereby increasing the reliability of experimental results.
Temperature changes are also important in chemical research when reactions occur, as they affect reaction rates and product yields. Temperature Sensors monitor the temperature during an experiment and issue an alarm when an abnormal rise or drop in temperature is detected. This ensures the safety of the researcher and the quality of the experimental results by detecting dangerous situations and reaction heterogeneity at an early stage.
Principle of Temperature Sensor
Temperature Sensor is a device that detects an abnormal temperature rise and issues an alarm. Temperature Sensors have a threshold set to detect abnormal temperature changes. The control circuit compares the sensor signal with the threshold value, and if the signal exceeds a certain range, it is judged as abnormal. The threshold value is adjusted according to the purpose of use and the environment.
For example, a specific temperature range can be set so that an alarm is triggered if it is exceeded. The mechanism for detecting temperature changes is located in the connector section. A minute voltage is generated in response to the temperature difference between the cold and warm contact points. The temperature of the measured object can be measured by combining the minute voltage resulting from the temperature difference between the two points and the voltage corresponding to the temperature of the cold contact point.
Features of Temperature Sensors
An excellent device with many features, Temperature Sensors have several characteristics:
1. High Sensitivity and Accuracy
Temperature Sensors provide high sensitivity and accurate temperature measurement with built-in sensors. For example, they can detect minute temperature changes and sudden rises. This enables early detection of abnormal temperature conditions and appropriate response.
2. Fast Reaction Speed
Temperature Sensors have a rapid reaction time. Since an alarm is triggered as soon as the sensor detects a temperature change, the abnormal condition can be noticed instantly. This allows for quick response and emergency safety.