With the enhancement of environmental awareness and the progress of science and technology, infrared gas sensors, as a non-contact gas detection tool, are widely used in environmental monitoring, medical diagnosis, industrial production and other fields. Based on the different absorption degree of infrared light at wavelengths by different target gases, infrared gas sensor measures infrared light at specific wavelengths to effectively monitor gas concentration. In order to improve their own work efficiency, infrared gas sensor usually uses NTC chip for temperature monitoring and temperature compensation to ensure the accuracy and stability of operation.

Changes in ambient temperature and internal temperature affect the intensity of infrared light emission and the response sensitivity of infrared gas sensor. In order to improve the above situation, the NTC chip will be installed inside the infrared gas sensor to monitor its real-time operating temperature, and the NTC will feed back the temperature signal to the control system for temperature correction to ensure that the sensor operates at a constant temperature, so as to ensure the accuracy of the infrared gas sensor output signal. In addition to temperature compensation, the NTC chip also plays the following roles in infrared gas sensor:

First, rapid response to prevent misjudgment

In an operating environment with large temperature variations, infrared gas sensor may misjudge due to temperature anomalies. The high sensitivity of the NTC chip can quickly help the sensor adjust its operating state when the temperature changes, and prevent measurement errors caused by temperature fluctuations. The nonlinear relationship of the NTC resistance value as a function of temperature allows it to respond quickly to temperature changes, thus keeping the infrared gas sensor operating within the normal temperature range and ensuring the reliability of the measurement results.

Second, extend the service life of the infrared gas sensor

The excellent electrical performance of the NTC chip helps the infrared gas sensor to carry out long-term and stable temperature control and monitoring in harsh or extreme environments. Through accurate temperature management, the probability of degradation of infrared gas sensor performance can be effectively reduced, and its service life can be extended, which is conducive to improving its overall stability.

In order to ensure the long-term high reliability and high accuracy of infrared gas sensor, EXSENSE Electronics Technology Co., Ltd. recommends DT series high-accuracy gold electrode NTC chip. Compared with the conventional silver electrode NTC chip, it has better consistency, which can effectively assist the infrared gas sensor to reduce the absorption or spectral drift of non-target gases caused by temperature changes, and ensure the accuracy of the sensor's measurement results. Moreover, the gold electrode NTC chip has higher sensitivity, which can respond in time when abnormal temperature is detected, so that the infrared gas sensor can maintain stable performance under different temperature conditions.