Title:
GAS SAMPLING PROBE
Document Type and Number:
Japanese Patent JP3152164
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To remove dust efficiently from the entire surface of a filter by inserting a porous nozzle into the filter.
SOLUTION: When gas analysis is performed, a purge gas inlet 6 is closed and gas is introduced into a filter 4 from the periphery thereof thence introduced to a gas analyzer through the inner hole of a block 3. Dusts are removed from the sampling gas when it is passed through the filter 4. When dusts adhering to the filter 4 are removed, piping to be led to the gas analyzer is closed and nitrogen gas or the air is introduced through the purge gas inlet 6 and fed into a porous nozzle 5. The purge gas fed into the porous nozzle 5 is jetted from a large number of holes made through the side face of the porous nozzle 5 in the direction perpendicular to the side lace toward the side face of the filter 4. The jetted purge gas has a significant gas pressure and dusts adhering to the filter 4 are removed thoroughly.
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Inventors:
Hiroshi Kawai
Shuji Takada
Shuji Takada
Application Number:
JP8109797A
Publication Date:
April 03, 2001
Filing Date:
March 31, 1997
Export Citation:
Assignee:
SHIMADZU CORPORATION
International Classes:
G01N1/00; G01N1/22; (IPC1-7): G01N1/22
Domestic Patent References:
| JP63181941U |
Attorney, Agent or Firm:
Yoshiaki Nishioka