粉尘浓度

为减少人为误差，我们采用Excel电子表格的数据处理能力，对测定的粉尘浓度进行统计计算，提高其准确度。

In the process of determination , Excel tables are used to calculate dust concentration to avoid man-made errors and improve accuracy .

采集数据模块即当系统开始运行工作后，传感器模块不断采集空气中粉尘浓度的数据，并把数据传给CPU。

Data collection module that is when the system running work , sensor module continuous acquisition air dust concentration of data , and the data to the CPU .

基于粉尘浓度测定仪的PID除尘控制系统研究

Research on PID Dust Removal Control System Based on the Dust Concentration Determinator

空气中粉尘浓度为10.0mg/m~3～53.7mg/m~3（G）。

The dust concentrations were 10.0mg / m ~ 3 ~ 53.7mg / m ~ 3 ( G ) .

Excel在矿山呼吸性粉尘浓度统计中的应用

Application of Excel into statistics of concentration of respiratory dust in a mine

采场粉尘浓度变化的最大Lyapunov指数分析

The Largest Lyapunov Exponent Analysis of the Change of Dust Consistency in Stope

基于EPA通信的粉尘浓度测量仪的设计

Design of dust measurement device based on EPA

结果表明，采样位置距发尘源距离和作业环境粉尘浓度对K值有较大影响，粉尘浓度与K值间呈线性相关。

The results showed that the distance from sampling site to the generated origin of dust and the concentration of airborne dus in working field affected K-Factor obviously .

文中利用Mie散射理论，推导出通过计算一定散射角度的散射光强来计算粉尘浓度的测量方法。

Based on Mie theory , this method measure the concentration by calculating the scattering light intensity .

方法：连续监测技改车间内粉尘浓度和噪声强度，测定粉尘分散度和游离SiO2含量，分析噪声频谱性质。

Methods : The dust concentration and noise intensity were monitored , the dust dispersion rate and the content of free silica surveyed and the characteristic of noise analysed .

结果表明，粉尘浓度时间序列存在着正的最大Lyapunov指数，且随着时间的增长，最大Lyapunov指数增大。

The result shows that there is a largest positive lyapunov exponent in the time series of the dust consistency with the principle that the higher value means the longer monitoring time .

结果作业环境粉尘浓度超过国家相应的卫生标准的占88.6%，游离SiO2含量岩尘为24.0%，煤尘为6.1%；

Results Dust concentrations of 88.6 % samples exceeded the hygienic standard . The content of free SiO_2 in rock dust was 24.0 % and 6.1 % in coal dust .

主要介绍了BX型粉尘浓度测试仪的光学测量原理、光电检测器件的选取原则及与其相匹配的前置放大电路的设计以及其后续电信号的处理方法。

The optics testing principle , the selecting rule of photoelectricity testing parts , the design of magnifying circuit and the dealing method of electric signal are introduced in this paper .

[方法]中国测定的是环境瞬时总粉尘浓度（Tchn），美国测定的是整班时间加权平均呼吸性粉尘浓度（Rus）和总粉尘浓度（Tus）。

[ Methods ] The Chinese samplers measured short-term total dust concentration in environment , while the US samplers collected full-shift time-weighted average respirable dust and total dust concentrations .

利用软件解决了噪声对粉尘浓度、粒径激光测量弱信号的影响，提高了ESP控制系统在强噪声、强干扰场合下的运行稳定性。本研究成果可以在更广阔的粉尘治理场所得到应用。

By using software , the influence of noise signal is reduced in the study of measuring the dust concentration and particle size . Consequently , the running stability of ESP control system is increased in the environment of strong noise and perturbation .

采矿车间和冶炼车间干燥工段粉尘浓度较高，大部分样品浓度超过10mg／m3。总的看来，空气镍浓度与粉尘浓度大致平行。

Dust concentrations were rather high in mining shop and drying process of smelting shop , most samples collected there were > 10mg / m3 . In general the concentration of nickel in the air was parallel to the dust concentration approximately .

其主要测试参数为：室内空气温度、湿度、气流速度、噪声、照度、CO浓度、CO2浓度、甲醛浓度、粉尘浓度和挥发性有机物（TVOC）等；

The main parameters such as indoor temperature , humidity , air velocity , noise , luminance , ppm of CO , ppm of CO2 , ppm of formaldehyde , concentration of dust , and total volatile organic compound ( TVOC ) are measured by using advanced instruments .

根据Mie散射理论计算了5种光学粉尘浓度测量仪的光散射响应特性曲线，对照呼吸性粉尘在人体呼吸道中的沉降效率曲线，对这些光学粉尘浓度测量仪的响应特性进行了分析。

Response characteristics of five light scattering aerosol photometers are calculated according to Mie Theory , and analysis of these response characteristics are performed compared to the respirable dust collection efficiency curve defined by the American Conference of Governmental Industrial Hygienists ( ACGIH ) .

BX型粉尘浓度测试仪是一种用于测定空气环境中浮游粉尘浓度的专用仪器，主要用于工矿企业、石油化工、劳动安全、劳动卫生及环境保护等部门的粉尘监测。

Powder thickness testing instrument ( Model : BX ) is a sort of special instrument to test the powder thickness in air . It is used to monitor powder concentration in mine , oil , chemical plant , labor safety , labor sanitation and entironment protecting department .

针对1.2L哈特曼装置上的粉尘浓度进行了测量研究，并对测量数据进行了分析讨论，得到了1.2L哈特曼管上不同位置高度的粉尘浓度随时间的变化曲线。

The research conducted a measurement study on the dust concentration in a 1.2L Hartmann Bomb , analyzed the measurement data , and finally obtained the time-dependent curves of dust concentration at different heights in a 1.2L Hartmann Bomb .

在线排烟粉尘浓度检测系统的研究和开发烟尘排放总量1059.1万吨。

The discharge amount of the smoke dust hit 10.591 tons .

煤矿井下作业场所粉尘浓度的法律管理

The Legal Management of Dust Levels at Underground Coal Mine Workplaces

基于光散射测量原理的粉尘浓度检测仪的设计

A Design of Powder Measurement Instrument Based on Light Absorbing Principle

作业场所空气中粉尘浓度的不同测定方法比较

A Comparison Between Two Monitoring Methods for Dust Concentration in Working Spots

光度法提取粉尘浓度信息的研究

Study on Abstracting Information of Dust Concentration by Photometric Method

煤矿呼吸性粉尘浓度与总粉尘浓度的关系

Study on relationship between respirable and total dust concentrations in coal mines

光学粉尘浓度测量仪响应特性曲线的计算与分析

Response characteristic calculation and analysis of light scattering aerosol photometers

烟道粉尘浓度的光电测量

Photoelectric Measurement on the Concentration of Powder in the Flue

根据历年粉尘浓度监测资料及工种变动记录计算累积粉尘接触量。

The cumulative dust exposed was calculated according to the monitoring data .

粉尘浓度随哈特曼管高度位置分布很不均匀。

The dust concentration along heights in the Hartmann Bomb distributes ununiformly .