InAsSb Diode Optical Pairs for Real-Time Carbon Dioxide Sensors

Autor: M. A. Remennyi, G. Yu. Sotnikova, A. A. Kapralov, S. E. Aleksandrov, B. A. Matveev, G. A. Gavrilov
Rok vydání: 2018
Předmět:
Zdroj: Technical Physics. 63:1390-1395
ISSN: 1090-6525
1063-7842
Popis: Efficiencies of optical pairs consisting of fast low-noise uncooled immersion LEDs and photodiodes based on InAsSb solid solution are studied. The proposed optical pairs are promising for applications in compact low-voltage sensors of carbon dioxide. The threshold sensitivity of such a sensor is several hundreds of ppm, and the measurement error is no worse than 5% in a wide range of concentrations (up to 10 v/v%) at a relatively high time resolution (50 ms) and a sample volume of no greater than 50 mL. Relatively high working rate and low volume of the sample improve diagnostics in capnography and allow applications in pediatrics and side-stream capnography including measurements of instantaneous CO2 concentration in the course of breathing.
Databáze: OpenAIRE
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