Patent ID: 7705991
Filing Date: 2010-04-27
Classification: G01J,G01N

Abstract:
1. A gas measuring apparatus for measuring a gas sample of inhalation anesthetics, carbon dioxide and nitrous oxide, the apparatus comprising: a radiation source for emitting radiation in first and second spectral ranges (Δλ said radiation source being a component comprising: a radiator which is modulated at a frequency (f a measuring gas cuvette for accommodating the gas sample to be examined; a mirror assembly including: first and second reflecting mirrors disposed at a distance from each other; and, means for changing said distance between said mirrors; said mirror assembly being configured on the basis of an electrically tunable Fabry Perot interferometer which provides transmissions corresponding to said first and second spectral ranges (Δλ a detector element for evaluating said first and second spectral ranges (Δλ a drive unit connected to said mirror assembly for presetting a dynamic range with a frequency (f measuring signals (S an evaluation unit for separating said measuring signals (S