Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2007-07-17
2007-07-17
Porta, David (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
Reexamination Certificate
active
11380298
ABSTRACT:
A gas sensor arrangement comprises a gas measuring chamber containing a gaseous analyte. First and second radiation sources emit radiation. The first radiation source operates as a measuring radiation source and the second radiation source operates as a reference radiation source. The radiation is directed through the gas measuring chamber and into a detector that generates an output signal depending on the presence of the gaseous analyte. A control device evaluates the output signal from the detector. The control device interchanges the operation of the first and second radiation sources after a predetermined service life.
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Frodl Robert
Loewe Hans-Dirk
Barley Snyder LLC
Gaworecki Mark R
Porta David
Tyco Electronics Raychem GmbH
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