Detection technology is an important technical means for people to understand and transform the world. Sensors are important tools for developing, acquiring, transmitting and processing information resources in scientific experiments, industrial production and other activities. Let's talk about the sensor, the core component of the gas detector.
A gas sensor is a device that can sense the type and concentration of a certain gas in the environment, and convert the relevant information into electrical signals, so as to monitor, analyze and alarm the measured gas. With the improvement of people's requirements for ambient air quality, the demand for portable on-line gas sensor detectors with excellent performance is also increasing. A good gas sensor should have the following characteristics:
(1) It has good selectivity, and has obvious response characteristics to the measured gas in an environment where multiple gases coexist;
(2) High sensitivity, wide detection range and low detection limit;
(3) The signal response and recovery speed is fast, and the reversibility is good;
(4) Strong anti-electromagnetic interference ability, good reproducibility and stability, long storage and service life;
(5) Simple structure, low consumption, low price, convenient use and maintenance;
(6) Small and portable, intelligent and multi-functional, which is convenient for online on-site analysis.
