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Atmospheric particulate matter monitor

A technology of atmospheric particulate matter and monitoring instrument, which is used in particle suspension analysis, measurement devices, scientific instruments, etc., to achieve the effect of improving accuracy

Inactive Publication Date: 2013-08-07
安徽安光环境科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the invention is to solve the problem of accurately calculating the concentration value of atmospheric particulate matter

Method used

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  • Atmospheric particulate matter monitor

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Embodiment Construction

[0009] Combine below figure 1 , the present embodiment includes a sampling pipe 12, a heater 13, a monitoring device 3, a mass flow controller 7, a dynamic humidity control system 14, an air pump 10, and an atmospheric discharge pipe 11, and the monitoring device 3 is provided with a dynamic flow control System 9, the flow dynamic control system 9 includes an embedded microprocessor 4, an analog-to-digital converter 6 and a digital-to-analog converter 8; the sampling pipe 12 is provided with a temperature sensor 2 connected to the embedded microprocessor 4 ; The flow dynamic control system 9 is provided with an atmospheric pressure sensor 5 connected to the embedded microprocessor 4; the mass flow controller 7 is connected in series with the analog-to-digital converter 6 and the digital-to-analog converter 8; No matter how the temperature changes, no matter how the atmospheric pressure changes, the working condition flow at the sampling port will change within the set allowabl...

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Abstract

The invention discloses an Atmospheric particulate matter monitor comprising a sampling tube (12), a heater (13), a monitoring device (3), a mass flow controller (7), a dynamic humidity control system (14), and a gas suction pump (10). A flow dynamic control system (9) is arranged in the monitoring device (3). The flow dynamic control system (9) comprises an embedded microprocessor (4), an analog to digital converter (6), and a digital to analog converter (8). A temperature sensor (2) connected with the embedded microprocessor (4) is arranged on the sampling tube (12). An atmospheric pressure sensor (5) connected with the embedded microprocessor (4) is arranged on the flow dynamic control system (9). The mass flow controller (7) is connected with the analog to digital converter (6) and the digital to analog converter (8) in series. With the sampling flow dynamic control system, no matter how the environmental temperature and atmospheric pressure at a sampling port change, the flow at the sampling port can be dynamically adjusted within a preset precision range in real time. Because the flow at the sampling port is constant and stable, monitor measuring precision of atmospheric particulate matter concentration is improved.

Description

technical field [0001] The invention relates to an air particle monitor. Background technique [0002] When measuring the concentration of atmospheric particulate matter with an atmospheric particulate matter monitor, it is necessary to know the flow value of the sampling port. The higher the accuracy of the flow value, the higher the accuracy of the measured atmospheric particulate matter concentration value. Under normal circumstances, the mass flowmeter is installed in the host of the atmospheric particle monitor, and the ambient temperature and atmospheric pressure at the sampling port are not introduced into the flow control system for conversion between standard conditions and working conditions. Therefore, this value cannot truly reflect the flow value of the sampling port. If the flow rate is inaccurate, the atmospheric particle concentration converted based on the flow rate will also be inaccurate. Contents of the invention [0003] The purpose of the invention i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
Inventor 潘焕双鲁爱昕张帅化利东吕长彬施奇兵徐合林陆明霞
Owner 安徽安光环境科技有限公司
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