Title:
GAS ANALYZER
Document Type and Number:
Japanese Patent JP3538501
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent occurrence of an excessive response due to a sudden change in the concentration of gas without delaying a response speed and to lessen a space occupied by piping components, by providing a bypass passage in a state wherein the inlet and outlet thereof are connected to a sample gas passage and further by providing a piping of a large bore in the bypass passage.
SOLUTION: Sample gas S of low concentration is supplied to an analyzing part 2 from a sample gas inlet 3 positioned on the upstream side of a bypass passage 4. When the sample gas S changes to be of high concentration suddenly at the inlet 3, the sample gas of high concentration goes separately into the bypass passage 4 and a sample gas passage 1 at the inlet (a) of the bypass passage 4. The gas of high concentration passing through a piping 1a is thinned with the gas S of low concentration flowing out from a piping 5 of a large bore. Meanwhile, the gas of high concentration passing through a piping 4a is also thinned with the sample gas S of low concentration likewise in the piping 5 of the large bore. Accordingly, the sample gas can be supplied to the analyzing part 2, in a state wherein the change in the concentration is moderated finally in comparison with that on the upstream side of the bypass passage 4.
Inventors:
Ikuta, Takuji
Shimizu, Naohito
Fujiwara, Masahiko
Matsuura, Yoshimi
Shimizu, Naohito
Fujiwara, Masahiko
Matsuura, Yoshimi
Application Number:
JP15310796A
Publication Date:
June 14, 2004
Filing Date:
May 25, 1996
Export Citation:
Assignee:
HORIBA LTD
International Classes:
G01N1/00; (IPC1-7): G01N1/00