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Figure6-8_Laboratory setup measurements.zipCO2 concentration dependency of the photoacoustic sensor signal at different absorption path lengths and diameters886,8 kBZIPÖffnen/Download
Figure9_0-30% CO2 measurement.zipComparison of the developed photoacoustic CO2 sensor with the commercial NDIR sensor ExplorIR-W (Gas Sensing Solutions Ltd., United Kingdom) at 1 vol. % concentration vari-ations between 0 and 19 vol. % CO2. The tested gas matrix is a mixture of dry N2 and CO2. Each gas matrix variation was measured for 10 minutes.1,79 MBZIPÖffnen/Download
Figure10_30-70%_Humidity_influence.zipComparison of the absolute (a) and normalized (b) signal values of the developed photoacoustic CO2 sensor with the commercial NDIR sensor ExplorIR-W (Gas Sensing Solutions Ltd., United Kingdom) at 10 vol. % concentration variations between 30 and 70 vol. % r.H. The tested gas matrix is a mixture of dry N2 and O2 at 8 vol. % CO2. Each gas matrix variation was measured for 10 minutes and respectively repeated five times.574,61 kBZIPÖffnen/Download
Figure11_0-20%_Oxygen_influence.zipComparison of the absolute (a) and normalized (b) signal values of the developed photoacoustic CO2 sensor with the commercial NDIR sensor ExplorIR-W (Gas Sensing Solutions Ltd., United Kingdom) at 5 vol. % concentration variations between 0 and 20 vol. % O2. The tested gas matrix is a mixture of dry N2 and O2 at 8 vol. % CO2. Each gas matrix variation was measured for 10 minutes and respectively repeated five times.533,45 kBZIPÖffnen/Download
Figure12_Skin_measurement_PA_sensor.zipThe slow detector signal change after fixing the miniaturized photoacoustic sensor to the skin surface of the test person. The decrease in the photoacoustic signal indicates the CO2 diffusing out of the skin surface and into the measurement cell of the CO2 sensor. The signal reaches its lowest measured value after 3 hours (181 minutes), which represents the arterialization time of the developed sensor. After 202 minutes the sensor is removed from the skin and the signal abruptly jumps to a value that corresponds to the surrounding CO2 concentration in air.69,22 kBZIPÖffnen/Download
DDC Klassifikation Schlagworte Förderer Fraunhofer-Verbund

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2 fordatis/286.2 2024-01-10 14:06:56.164 Die Veröffentlichung, die auf diesem Datensatz basiert, wurde bei einem anderen Journal neu eingereicht. Dabei hat sich die Reihenfolge der Abbildungen/Daten verändert und es sind neue Abbildungen/Daten hinzugekommen.
1 fordatis/286 2022-09-29 11:51:45.0

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