·The FID detection principle used by the equipment, by using the flame generated by the combustion of hydrogen and air as energy, when the gas to be monitored contacts the flame, chemical ionization is generated at high temperature, and ionization produces ions several stars higher than the base flow. The strength of ion current produced by ionization is different with different component concentration, so the quantitative analysis of organic components can be carried out according to the size of ion current signal produced by ionization.

·When the equipment is working, the probe completes the blowback, the system opens the high-temperature diaphragm pump to extract the sample through the probe, and the chromatograph sends out the sample signal, the gas to be measured follows the carrier gas, that is, nitrogen, into the column system to complete the separation of each component, and then into the detection system to complete the detection of each component. Finally, the converted electrical signal is transmitted to the data processing system, which records the spectrum of each component and analyzes it, and then summarizes the analysis results of each component.

·The whole gas circuit of the equipment is heated to ensure that the gas will not condense; It has a backblow air path to eliminate other effects and ensure the accuracy of the data; At the same time, the equipment can also automatically restart, automatic ignition, automatic correction, automatic sampling, automatic power off and other automatic functions; The interface of the software is simple and easy to use. Users can complete the functions of calibration, analysis, real-time display and maintenance of chromatographic components through the simple interface operation.