| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress thickness reduction of a probe pipe due to erosion by dust contained in a gas or corrosion by a corrosive gas. <P>SOLUTION: A gas sampling device is configured such that the cross section of the end portion R<SB POS="POST">1</SB>is formed in a wedge shape at the end portion 14 of a probe pipe 12 disposed during gas flowing to dispose a tip opening 24a at the wedge-shaped tip, the tip opening is disposed so as to face to a gas flow and a coating layer having wear resistance and corrosion resistance is formed on the surface of the base material of the probe pipe 12 in the end area R<SB POS="POST">2</SB>of the probe pipe 12 including the end portion R<SB POS="POST">1</SB>. The gas flow is formed into a flow along an inclined plane forming a wedge shape, thereby preventing corrosion by a corrosive gas and abrasion by dust. <P>COPYRIGHT: (C)2012,JPO&INPIT |
