| 摘要 |
The invention relates to a method for the non-invasive measurement of the gas content of at least one gas, selected from O2, CO2, amines, nitrogen oxides, and sulfur compounds, in transparent containers composed of plastic films, glass, or other light-permeable materials, in which method a sensor material sensitive to the gas content in the interior of the packaging is excited by excitation light incident thereon to emit a fluorescent or luminescent light, the emitted fluorescent or luminescent light is detected in a detection apparatus that interacts with the sensor, whereupon the packaged materials or produced materials are subjected to sorting and possibly counting in dependence on a gas content determined in an evaluating unit coupled to the detection apparatus, comprising the following steps: a) possibly deep-drawing the packaging; b) attaching a sensor material to an inner face of a cover for the packaging or to the inner face of the packaging and possibly drying the sensor material; c) introducing the materials to be packaged into the packaging; d) closing the packaging in gas-tight manner, while introducing a modified atmosphere of the gas to be measured, by means of the cover; e) placing the packing on a conveying and sorting apparatus; f) exciting the sensor material by means of at least one excitation light source arranged at a defined distance from the packaging; g) detecting, in a contactless manner, the intensity of the fluorescent or luminescent light emitted by the sensor material in dependence on the gas content in the interior of the packaging by means of a detection apparatus arranged at a defined distance from the conveying apparatus, during conveying of the packaging to a sorting apparatus; h) electrically or electronically converting a measured value captured in the detection apparatus in the evaluating unit; i) possibly applying a pressure to the packaging and performing steps f) to h) anew; j) outputting a confirmation signal or rejection signal by means of the evaluating unit, and k) forwarding the packagings to a further-processing operation or a disposal operation in dependence on the gas content in the packaging calculated by the evaluating unit. The invention further relates to a device therefor. |
