Introduction to Sensor Types for Hydrogen Sulfide Gas Detectors
Hydrogen sulfide detector is a single gas detection instrument that mainly detects the gas concentration in the current environment through sensors during use. Hydrogen sulfide detectors can use different types of sensors to better detect hydrogen sulfide gas in the environment. Below, we will introduce the types of sensors used in hydrogen sulfide detectors.
Hydrogen sulfide detector sensor type
1. Primary battery type gas sensor: Its working principle is the same as that of commonly used dry batteries, except that the gas electrode replaces the carbon manganese electrode of the battery, such as an oxygen sensor. After oxygen is reduced at the cathode, electrons flow to the anode through an ammeter, and lead metal is oxidized at the anode. The magnitude of the current is related to the concentration of the gas. The use of a primary battery type gas sensor can effectively detect various gases.
2. Constant potential electrolytic cell type gas sensor: It plays a very good role in detecting reducing gases, and its principle is different from that of a primary battery type sensor. It undergoes electrochemical reactions under the force of current. Belongs to the true Coulomb analysis sensor. This type of sensor can not only be used to detect hydrogen sulfide gas, but also detect various gases such as carbon monoxide, hydrogen, ammonia, hydrazine, etc. It is currently the mainstream sensor for detecting toxic and harmful gases.
3. Concentration battery type gas sensor: It has electrochemical active gases present on both sides of the electrochemical battery, which will automatically form concentration electromotive force during operation. The magnitude of the electromotive force is related to the gas concentration. This type of sensor is mainly used in oxygen sensors for automobiles and solid electrolyte type carbon dioxide sensors.
4. Extreme current type gas sensor: It is a sensor used to measure gas concentration. The gas concentration sensor is prepared based on the principle that the extreme current in the electrochemical pool is related to the carrier concentration. It can be applied to gas concentration detection in the automotive industry and gas concentration detection in molten steel.
