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Những tiến bộ trong kỹ thuật kiểm tra chất gây ô nhiễm và thiết bị có tiến bộ đáng kể trong những năm vừa qua để điểm mà sự tự tin đáng chú ý trong dữ liệu instrumentationgenerated đã được thành lập. Hầu hết các hệ thống, cho dù dẫn sử dụng hoặc tự động, được thiết kế để xác định chất lượng của các chất gây ô nhiễm hiện nay mỗi đơn vị khối lượng của không khí. Những quyết định này có thể được thực hiện hoặc trong một ngăn xếp / ống hoặc trong khí quyển bên. | AIR POLLUTION INSTRUMENTATION Advances in pollutant monitoring techniques and instrumentation have progressed significantly in the past several years to the point where noteworthy confidence in instrumentationgenerated data has been established. Most systems whether manual or automatic have been designed to determine the quality of pollutants present per unit volume of air. These determinations can be made either in a duct stack or in the outside atmosphere for the purpose of either ensuring adherence to published air quality regulations or for defining air pollution control device design criteria. Air pollution instrumentation is utilized in the two major air quality areas of source and ambient monitoring with a further breakdown in the source monitoring category to the manual and continuous type of instrumentation. Each of the three categories presents various types of monitoring problems which must be overcome and each program is performed for a different reason. MANUAL MONITORING SOURCE INSTRUMENTATION Instrumentation is utilized in this type of monitoring to provide a means to determine compliance with existing regulations and for developing design criteria for control of air pollution. The systems must be durable and allow for a certain amount of flexibility due to the many different situations which are encountered during the evaluations of stationary sources. This is emphasized by the fact that there are more than 25 different Environmental Protection Agency EPA sampling methods which all except Method 9 require some type of instrumentation to complete the evaluation. See Stack Sampling. The most familiar procedure Method 5 has been the basis for the development of most of the other procedures. Method 5 shown in Figure 1 utilizes the basic equipment and sampling procedures i.e. impingers dry gas meter pump etc. which with minor modifications or additions can be utilized to perform other EPA methods. As an example Method 17 shown in Figure 2 utilizes the .
