| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fine-particulate analyzer capable of measuring a particle size distribution of fine particulates having a wide distribution from a nano-meter size to a submicron size suspended in a gas phase, and the change along with a lapse of time in a number concentration about the specified particle size of fine particulate while classifying in two kinds of particle size ranges, at the same time and in a real time. <P>SOLUTION: In this fine-particulate analyzer, the first measuring area 2 is formed between a common electrode part 4 and the center electrode 5, in a differential type electric mobility measuring instrument 1, the second measuring area 3 is formed between the common electrode part 4 and a conductive sleeve 20, the charged fine particulates are led into a sample gas introducing hole 27 through a sample gas introducing tube 26, one portion thereof is taken in the first measuring area 2 via a sample gas introducing slit 10, the remainder thereof is taken in the second measuring area 3 from a sample gas introducing flow passage 31, and the taken-in charged particulates are classified under respective measuring conditions. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
