The application of analyzing carbon dioxide gas detectors
It must be emphasized that there is currently no gas sensor with specific effects for a certain gas, which means that no gas sensor is specifically designed for the detection of a specific gas. For example, a gas sensor that indicates the detection of carbon monoxide may react with high concentrations of hydrogen gas in the detection environment to obtain a signal higher than the actual concentration of carbon monoxide, which is called sensor cross interference. The task of manufacturers is to minimize this cross interference through various physical or chemical methods, such as using filtration membranes and different circuit parameters to minimize the reaction of non test gases.
On the other hand, cross interference can also provide some convenience for instrument manufacturing in certain situations. For example, a carbon monoxide detector can be used to detect hydrogen gas, provided that only hydrogen gas is present in the environment and there is no carbon monoxide present. At the same time, this sensor needs to be calibrated with hydrogen gas. The commonly used carbon monoxide/hydrogen sulfide dual sensor is also manufactured by manufacturers using the characteristics of cross interference between carbon monoxide and hydrogen sulfide sensors. It can detect both carbon monoxide and hydrogen sulfide simultaneously, achieving the goal of a single sensor detecting both gases.
Due to technological limitations, gas sensors must undergo continuous calibration in order to obtain more accurate measurement results. General techniques require a pump test of the instrument before each use. If the measurement results of the instrument are within the error range of the instrument, the instrument can function normally
