New advances in non-dispersive IR technology for CO2 detectionThis paper discusses new technology developments in CO2 detection using Non-Dispersive Infrared (NDIR) techniques. The method described has successfully been used in various applications and environments. It has exhibited extremely reliable long-term stability without the need of routine calibration. The analysis employs a dual wavelength, differential detection approach with compensating circuitry for component aging and dirt accumulation on optical surfaces. The instrument fails 'safe' and provides the operator with a 'fault' alarm in the event of a system failure. The NDIR analyzer described has been adapted to NASA Space Station requirements.
Document ID
19890040505
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Small, John W. (Astro International Corp. Houston, TX, United States)
Odegard, Wayne L. (Astro International Corp. Houston, TX, United States)