Which gases can be detected by online gas detectors?
The key detection component of the gas detector is the gas sensor. In principle, gas sensors can be roughly divided into three categories:
A) According to the physical properties of the medium: such as infrared absorption, heat conduction, light interference, etc.
B) According to the electrochemical properties of the medium: such as diaphragm ion electrode type, constant potential electrolysis type, fixed electrolyte type, Galvanic battery type, etc.
C) According to the physical and chemical properties of the medium: such as catalytic combustion type, semiconductor type (surface control type, volume control type, surface potential type), solid thermal conductivity type, etc.
Among the above three types of gas sensors, sensors made according to the electrochemical properties of the medium are generally used. The concentration of the gas is calculated by detecting the magnitude of the current generated by the redox of the gas to be detected on the sensor probe.
The specific gases that can be detected by the online gas detector include: ethylene oxide, hydrogen sulfide, nitrogen monoxide, ammonia, sulfur dioxide, nitrogen dioxide, chlorine, hydrogen cyanide, hydrogen chloride, carbon monoxide, etc.
For example, the commonly used online gas detectors, ERUN-PG5 series fixed gas detectors, are commonly used in pharmaceuticals, iron and steel smelting, chemical workshops, chemical fertilizers, natural gas pipelines, gas stations, sewage treatment, hotel kitchen operating rooms, municipal, On-line gas concentration monitoring in fixed installation places such as chlorine plants.
For the detection of special gases, proprietary instruments can also be used. For example, the laser type oxygen content analyzer ERUN-QZ9100S and the intelligent paramagnetic oxygen analyzer ERUN-QZ9100 are specially suitable for detecting the oxygen concentration in the mixed gas, which can automatically perform temperature compensation and have high detection accuracy.
The coke oven gas oxygen analysis system ERUN-QZ9310 should be used for the detection and analysis of the oxygen content of the exhaust gas in various combustion systems such as metallurgy, heating, power stations, and industrial boilers.
The above is the introduction of which gases can be detected by the online gas detector. In fact, the online gas detector can basically detect various flammable and toxic gases. It is required to select a suitable gas detector for Winrun Environmental Protection.
