P4 - Portable Photoacoustic Methane Sensor for Medical Research
- Event
- AMA Conferences 2013
2013-05-14 - 2013-05-16
Nürnberg - Band
- Proceedings OPTO 2013
- Chapter
- OP - Poster Session
- Author(s)
- Pages
- 95 - 98
- DOI
- 10.5162/opto2013/oP4
- ISBN
- 978-3-9813484-3-9
- Price
- free
Abstract
Breath analysis can be a useful diagnostic tool, allowing noninvasive, real-time and cost-effective monitoring. A near infrared diode laser based photoacoustic sensor was developed for the measurement of methane concentration in breath. The sensor measures gas samples directly, and different gas handling equipments were prepared for optimal detection of methane emanating from rodents, human breath and respiratory gas mixture. Minimum detectable concentration was 0.25 ppm (3) with an integration time of 12 s. Due to its compact design the instrument is portable and robust. A uniquely developed electronic device provides overall system control and measurement automatization. The instrument is installed at a medical research laboratory at University of Szeged.