Method and apparatus for engine exhaust analyzer

Details Method and apparatus for engine exhaust analyzer Method and apparatus for engine exhaust analyzer

1980-01-29

1982-09-07

Atkinson, Charles E.

Boots, shoes, and leggings

364424, 73 1G, 73 23, G01N 122

Patent

active

043487327

ABSTRACT:
A processing unit for normalizing the output data of a gas analyzer in view of zero adjustment data and gain adjustment data formulated by the processing unit controlling air input and span reference simulation of a reference gas. A voltage reference generator is manually variable for calibrating the system while passing a known reference gas through the analyzer, in order to provide a scaling factor for use during output data adjustment. A hold switch is manually actuable by the operator for storing in memory the value of a gas analyzation voltage for permitting adjustment to the output data after the gas is removed from the cell of the analyzer.

REFERENCES:
patent: 3593023 (1971-07-01), Dodson et al.
patent: 3924442 (1975-12-01), Kerho et al.
patent: 3973848 (1976-08-01), Jowett et al.
patent: 3998095 (1976-12-01), Tinkham et al.
patent: 4030349 (1977-06-01), Blanke et al.
patent: 4094187 (1978-06-01), Navarre, Jr.
patent: 4160373 (1979-07-01), Fastaia et al.

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