Individual sampler

Abstract

The invention relates to an individual sampler which is an environment gas sampling apparatus, and belongs to the fields of gas monitoring and sampling in environment protection. The apparatus comprises a housing, a cell, a micro air pump, a man-machine interactive system, a system measurement and control module and a constant flow surge bin. The cell, the micro air pump, the system measurement and control module, the constant flow surge bin and a mass flow rate sensor are arranged in the housing. An air inlet end of a filter communicates with a sampling air inlet, and an air outlet of the filter communicates with an air inlet of the micro air pump; an air outlet of the micro air pump communicates with an air inlet of the constant current surge bin; an air outlet of the constant current surge bin communicates with the flow rate sensor; and an air outlet of the sensor communicates with a sampling air outlet of the individual sampler. The apparatus can realize full flow range accurate control and constant flow sampling and provide multiple intelligent sampling modes, has characteristics of low costs, small volume and size, convenience for carrying and sampling in any environment and provides convenience for various detecting mechanism; therefore, the apparatus has wide application aspects.

Description

technical field [0001] The invention relates to an environmental gas sampling device, which belongs to the field of gas monitoring and sampling in environmental protection. Background technique [0002] With the rapid development of science and technology and industry and the continuous improvement of people's living standards, people pay more and more attention to air quality issues that are closely related to people's daily life. Air pollution and its environmental monitoring have become major international hot spots. Therefore, The market is full of samplers. [0003] Although there are standards for various samplers to formulate their relevant requirements, the results are also different due to the different manufacturing processes of each manufacturer. At the same time, due to the use of old-fashioned rotor display or pressure feedback measurement methods, the control The accuracy cannot reach a higher level of accuracy, and therefore, there are relatively large measur...

AI Technical Summary

Problems solved by technology

[0006] For some products with sensors, due to the above-mentioned process, in most cases, due to passing through the sampling air pump and the internal circuit, the gas not only loses, but also becomes a pulsating air flow after the sampling air pump, and the sampling air The flow data displayed by the meter is the data before the gas loss, which leads to the inaccuracy of the collected samples, which causes great errors in the follow-up laboratory analysis.

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