Description of the detection methods and classification of gas detectors
Understand the parameters and related data issues of your gas detector to ensure accurate measurement values and prevent damage to the instrument. The core of a gas detector is the sensor, in short, the classification of sensors is the classification of gas detectors. Today, we will introduce the detection principle and application of gas detectors.
Gas detector is one of the safety detection tools that uses its own equipment system to detect toxic and harmful gases and issue warnings. The detection methods and types can be roughly divided into the following categories:
1. Electrochemical sensors are a common and mature detection technology currently used in gas detectors to detect toxic and harmful gases. The characteristics of electrochemical sensors are small size, low power consumption, good linearity and repeatability, and long lifespan.
2. In addition to using toxic gas detectors, colorimetric tube measurement technology is currently used in industrial environmental protection as a detection method for toxic and harmful gases. The advantage of this measurement method based on chemical color reactions is that it can compensate for the lack of suitable detection sensors encountered when using instruments for measurement.
3. The ionization detectors currently available on the market are divided into photoionization detectors (PID) and flame ionization detectors (FID), which are commonly used toxic gas detectors in gas chromatography instruments. Separating these two sensors into instruments has become a commonly used detection method for detecting volatile organic compounds.
4. Semiconductor sensors for toxic gas detection are detection components made of metal oxides or materials that become metal semiconductor oxides. Laser cutting machines can generate surface adsorption or reaction when interacting with gases, causing changes in conductivity, volt ampere characteristics, or surface potential characterized by carrier movement. It can be used to detect combustible gases at percentage concentrations, as well as toxic gases at ppm levels.
Gas detectors can generally be used in various environments, and using them in the correct environment can ensure the stable operation and maintenance frequency of the machine. Gas detectors are commonly used in petrochemical, industrial production and mineral development, smoke and exhaust environment monitoring, sewage treatment, biopharmaceuticals, home environmental protection, school laboratories and other fields.
Gas detector is a commonly used tool for leak inspection in gas storage areas. Especially suitable for use around process processing equipment, pipeline systems, and entering narrow spaces. One handed operation, the instrument includes a built-in pump and a sampling soft rod (to identify the location of the leak source), large character and background light display, ensuring clear reading of the detected gas concentration values in dark and dark environments.
