Automatic gas distribution unit and automatic quality control system

Abstract

The invention relates to an automatic gas distribution unit and an automatic quality control system. The automatic quality control system comprises an automatic gas distribution unit, a data processing unit, an internal standard gas input unit and a detection unit, wherein the internal standard gas input unit is connected with an enrichment module of the automatic gas distribution unit by means ofa pipeline, the detection unit is connected with an output port of the enrichment module of the automatic gas distribution unit by means of a pipeline, and the data processing unit collects, processes and stores data detected by means of the detection unit, sends out an alarm signal and transmits the alarm signal to a controller of the automatic gas distribution unit. The automatic quality control system automatically controls the sample feeding time and sample feeding amount according to actual needs, realizes unattended sample feeding test, greatly saves labor cost and time cost, updates ananalysis template through regularly performing data calibration, performs quality control on the test results, and fully guarantees the precision of qualitative analysis and quantitative analysis results.

Description

Technical field [0001] The present invention generally relates to the field of gas analysis, in particular to an automatic gas distribution unit and an automatic quality control system. Background technique [0002] Volatile organic compounds (VOCs) are organic pollutants that are ubiquitous in the atmosphere and have the most serious impact on the environment. Real-time and accurate monitoring of them is imperative. [0003] At present, the detection methods of volatile organic pollutants in the atmosphere are mainly divided into two modes: offline detection and online monitoring. Offline detection technology has limited sampling points, low time resolution, and greater influence of external interference factors (such as personnel, appliances, transportation, etc.). The analysis has obvious lag, which cannot meet the real-time monitoring of VOCs changes in the atmosphere. Needs. On-line monitoring technology has high time resolution, while reducing various interferences caused b...

AI Technical Summary

Problems solved by technology

This method is suitable for experimental work with a large amount of standard gas or a long ventilation time, especially for the preparation of low-concentration standard gas. Manpower and material resources, and it is not suitable for the preparation of high-concentration standard gases. The concentration of the configured configuration gas is at the ppb (parts per billion) level, and it is impossible to configure the higher ppt (parts per trillion) level configuration gas.

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