Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1994-09-27
1996-08-06
Redding, David A.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 94, 422 95, 422 96, 422 97, 436137, 73 2321, 73 2331, G01N 700, G01N 3002
Patent
active
055431135
ABSTRACT:
For an exhaust analyzer, the factors causing turbulence and mixing of the sample gas are removed from the sample gas-introducing pipe in order to introduce the sample gas into the analyzer cell under laminar conditions. Further, the indicated changes resulting from the fluctuations of sample gas pressure within the analysis cell of such a construction are compensated. As a result, the sample gas can be quantitatively analyzed with a high rate of response under the condition that the influences caused by the fluctuations of the sample gas pressure are reduced.
The sample gas is introduced into the cell-type gas analyzer from the sample gas source through a gas-introducing pipe under laminar conditions. A pressure sensor detects the changes in pressure within the cell of the gas analyzer, and in response to the pressure sensed by the pressure sensor a compensating means compensates for the erroneous indication of gas characteristics generated by the analysis cell as a result of the fluctuations of sample gas pressure therein.
REFERENCES:
patent: 4141955 (1979-02-01), Obiaya
patent: 4379402 (1983-04-01), Harman, III
patent: 5088313 (1992-02-01), Fabinski et al.
German Publication: MTZ Motortechnisch Zeitschrift 52 (1991), pp. 356-361.
Koike Hideki
Takeda Kenji
Horiba Ltd.
Redding David A.
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