Atmospheric automatic monitoring apparatus capable of realizing sampling/calibrating alternative equivalent operation, and method thereof

An automatic monitoring and atmospheric technology, which is applied in the direction of analyzing materials and instruments, can solve the problems of consuming more manpower, material and financial resources, different physical status indicators, and daily work impact, so as to achieve economical savings, avoid data distortion, and operate Time-saving and labor-saving effect

Active Publication Date: 2015-07-22
中山市环境监测站
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the above method can complete the sampling and instrument calibration of the automatic atmospheric monitoring system, it is found that there are some deficiencies in the actual use process, which will have a certain impact on daily work
In actual work, there are separate gas channels for sampling and calibration. In order to meet the calibration requirements of different analytical instruments, standard gas tanks and control valves are respectively equipped for the three gases. Re-sampling after the process is completed, different gas channels will lead to different physical state indicators of standard gas and sampled air, resulting in uncertain systematic errors in the results, and at the same time, it is very inconvenient to operate in actual work and consumes more Human, material and financial resources are not economical enough

Method used

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  • Atmospheric automatic monitoring apparatus capable of realizing sampling/calibrating alternative equivalent operation, and method thereof
  • Atmospheric automatic monitoring apparatus capable of realizing sampling/calibrating alternative equivalent operation, and method thereof
  • Atmospheric automatic monitoring apparatus capable of realizing sampling/calibrating alternative equivalent operation, and method thereof

Examples

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Effect test

Embodiment example 1

[0040] When the instrument is calibrated, the mixed standard gas tank 6 and the dynamic calibration instrument 5 are opened, the working signal of the dynamic calibration instrument 5 is transmitted to the relay 16 and the relay is de-energized, and the solenoid valve 15 and the sampling pump 14 at the end of the gas path central channel 9 are also simultaneously Stop the power supply and stop collecting air to enter the central channel 9 of the gas circuit. The standard gas and air are fed into the dynamic calibration instrument 5 to be mixed according to a certain ratio and then passed into the central channel 9 of the gas circuit. The mixed standard gas is quickly filled with the central channel 9 of the gas circuit Under the action of the built-in air extraction device of the analytical instrument 13, it enters the analytical instrument 13 through the output branch 11 and the filter device 12 for analysis, and the instrument is calibrated according to the accuracy of the lin...

Embodiment example 2

[0055] When sampling, close the dynamic calibration instrument 5, the power-off signal of the dynamic calibration instrument 5 is transmitted to the relay 16 and the relay is energized, and the electromagnetic valve 15 and the sampling pump 14 at the end of the central channel 9 of the gas circuit are also energized and are in working state at the same time. Under the action of the power of the pump 14, the air enters the central channel 9 of the gas path through the sampling head 5 arranged outside the roof 2, and under the action of the air extraction device built in the analytical instrument 13, the air passes through the output branch 11 and is filtered by the filter device 12 After removing the particles therein, enter the analysis instrument 13 for analysis, and output real-time analysis data.

[0056] After the device has sampled for a period of time, the analytical instrument 13 needs to be calibrated again, and the aforementioned instrument calibration steps are repeat...

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Abstract

The invention relates to an atmospheric automatic monitoring apparatus capable of realizing sampling/calibrating alternative equivalent operation, and a method thereof. An air path center system is arranged, a standard gas introduction mode during apparatus calibration is improved, and a relay connects a dynamic calibrator, a solenoid valve and a sampling pump; when calibration is carried out, the dynamic calibrator is started, and the solenoid valve and the sampling pump are closed through powering off the relay; and when sampling is carried out, the dynamic calibrator is closed, and the solenoid valve and the sampling pump are started through powering on the relay in order to realize the alternative equivalent operation process of calibrating/sampling. An air acquisition system is a sampling head, a standard gas generation system comprises a standard gas tank, a zero gas generator and the dynamic calibrator, the air path center system comprises an air path center channel, an intelligent transition control system comprises the sampling pump, the solenoid valve and the relay, a temperature control device comprises a humiture probe and asensor, a humiture controller and a heat insulation cover, and a pollutant analysis system comprises a plurality of filtering devices and an analyzer.

Description

technical field [0001] The invention relates to the technical field of automatic atmospheric monitoring, in particular to an automatic atmospheric monitoring device and method capable of realizing sampling / calibration alternate equivalent operation. Background technique [0002] Different gas delivery channels are set for the sampling and calibration process of the existing automatic atmospheric monitoring system. When sampling, the atmosphere enters the sampling gas channel, and then passes through the filter device and then passes into different analytical instruments for analysis; when calibrating, configure a standard gas for each of the measured items (sulfur dioxide, nitrogen dioxide, carbon monoxide) that require standard calibration gas The standard gas is connected to the dynamic calibration instrument through different gas pipelines, and then directly into the analytical instrument for analysis and calibration. [0003] Although the above method can complete the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N35/00
Inventor 杨满芽徐迅宇何甜辉汪言满蔡建楠区洪辉蒋争明利雪儿刘桂贤
Owner 中山市环境监测站
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