Optics: measuring and testing – For light transmission or absorption – Of fluent material
Reexamination Certificate
2004-06-08
2008-11-25
Pham, Hoa Q (Department: 2886)
Optics: measuring and testing
For light transmission or absorption
Of fluent material
C250S343000, C250S341400
Reexamination Certificate
active
07456969
ABSTRACT:
The invention relates to a device for monitoring the oxygen concentration in an aircraft tank. The device includes an absorption measuring section equipped with a laser or laser diode (6), a photodiode (7), a temperature sensor (8) and a reflector (5) for carrying out laser spectroscopy on a gas volume to be measured inside the tank. The conducting components of the device are positioned outside the tank and its reflector (5) is positioned in the tank in the gas volume to be measured, the components and reflector being optically coupled by a window (3) that is situated in the tank wall (2). The absorption measuring section is mainly located in the chamber containing the gas to be measured.
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Chabanis Gilles
Fleischer Maximilian
Mangon Philippe
Meixner Hans
Strzoda Rainer
Pham Hoa Q
Siemens Schweiz AG
Young & Thompson
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