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Optical gas sensor used for determining gas constituent of air, comprises radiation source and porous sensitive layer arranged on substrate
Optical gas sensor used for determining gas constituent of air, comprises radiation source and porous sensitive layer arranged on substrate
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机译:用于确定空气中气体成分的光学气体传感器,包括辐射源和布置在基板上的多孔敏感层
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摘要
An optical gas sensor comprises a radiation source (12) and a porous sensitive layer (22) arranged on a substrate. The sensitive layer contains particles (16) which are optically transparent for the radiation (13) produced by the radiation source and extend the optical path of the radiation. Preferred Features: The particles contain glass or quartz and have a diameter of 3-20 microns m. The particles are hollow and at least part of the surface is coated with a material (18) sensitive to the gas being detected. The sensitive layer or the sensitive material contains tetraoctylammonium hydroxide.
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