Can the oxygen gas detector read the nitrogen concentration?
Can the oxygen gas detector read the nitrogen concentration? No, the oxygen gas detector is specially designed to detect oxygen concentration, and it cannot be used to detect nitrogen. If you want to detect oxygen and nitrogen at the same time, you can choose an all-in-one gas detector. The common all-in-one gas detector on the market can detect six kinds of gases at the same time, but the types of gases to be detected need to be configured at the time of purchase. Let's take a look at the principle and application of oxygen detector and nitrogen detector.
The reason why the gas detector can detect gas is because there is a part called gas sensor in the detector. This sensor needs to be selected according to the type of gas to be detected, the detection accuracy and range, the use environment and other conditions, which can be simply understood as customized selection, so the oxygen gas detector cannot detect nitrogen.
Common oxygen sensor principles include electrochemistry, optics, zirconia and paramagnetic oxygen. Electrochemical sensor is the most common one, which uses oxygen to react with the sensor and generate an electrical signal proportional to the gas concentration. The sensor consists of two electrodes. This kind of sensor can choose a wide range, including conventional detection range and high precision and high range. Optical oxygen sensor is based on the principle of fluorescence quenching. By using the known light source, the detected light energy is inversely proportional to the number of oxygen molecules in the sample gas. Compared with the traditional electrochemical sensor, the fluorescent oxygen sensor has a longer service life and is not interfered by other gases, but its optional range is smaller. Zirconia oxygen sensor is similar to electrochemical sensor, which uses a concentration cell formed by covering a layer of platinum on the surface of zirconia. It has a wide application range and little interference, and can be used to analyze the oxygen content in flue gas. Paramagnetic oxygen is designed according to the high magnetism of oxygen. The magnetic susceptibility of oxygen is much higher than other gases (such as nitrogen, helium, argon, etc.), and it is insensitive to mechanical shock and relatively stable, but it is easily cross-sensitive by other gases.
Nitrogen sensor mainly has electrochemical and optical principles, and electrochemical nitrogen sensor is similar to electrochemical oxygen. Optical nitrogen sensor uses the absorption degree of nitrogen to light with a specific wavelength to detect. Nitrogen detector is widely used in industry, medical treatment, environmental protection and other fields, mainly to detect the purity of nitrogen.
For the choice of oxygen detector, you can use the hand-held pumping oxygen detection alarm device produced and sold by Xi' an Yingrun Environmental Protection Company. This instrument is designed based on electrochemical principle and has a variety of measuring ranges. Pump-suction measurement has high detection accuracy, fast response and good repeatability; With sampling pump, it supports long-distance sampling; Large data storage capacity, supporting multiple storage methods. It is very suitable for rapid measurement of oxygen concentration in the environment.
