Measuring and testing – Gas analysis – With compensation detail
Patent
1997-05-02
1999-07-27
Williams, Hezron
Measuring and testing
Gas analysis
With compensation detail
204426, G01N 700, G01N 2726
Patent
active
059293187
ABSTRACT:
A sensor system and method for measuring very low levels of a particular gas in an atmosphere which initially has high level of the gas. A pair of sensors of the particular gas are provided, one of which senses high levels of the particular gas and the other of which senses very low levels. The sensor which senses very low levels of the gas is not exposed to the atmosphere until the gas level has reached a low level, thereby enabling it to more quickly respond to further reduction in the gas.
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Gealow Jon Carl
Illinois Instruments, Inc.
Politzer Jay L.
Williams Hezron
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