Title :
A NDIR CO2 monitor with smart interface for global networking
Author :
Wang, Yanfeng ; Nakayama, Masakatsu ; Yagi, Mikiko ; Nishikawa, Makoto ; Fukunaga, Masaichi ; Watanabe, Kenzo
Author_Institution :
Res. Inst. of Electron., Shizuoka Univ., Hamamatsu, Japan
Abstract :
A low cost and networkable CO2 monitor is developed, which consists of a non-dispersive infrared (NDIR) sensor and a network interface. It measures the CO2 concentration by spectrum absorption in the 4.26 μm band due to CO2 molecules in the air. On-line calibration, the access to the TEDSs defined in IEEE 1451.2 standard and measured data are made by Java applet and client programs in C language. The prototype monitor has durability and long term stability with a measurement accuracy of ±(30ppm+2%) over the CO2 concentration range from 380 ppm to 5000 ppm.
Keywords :
C language; IEEE standards; Java; calibration; carbon compounds; gas sensors; infrared detectors; network interfaces; 4.26 micron; C language client programs; CO2; IEEE 1451.2 standard; Java applets; NDIR CO2 monitor; TEDS access; atmospheric air carbon dioxide concentration; concentration range; global networking; long term stability; network interface; nondispersive infrared sensor; on-line calibration; smart interface; spectrum absorption; Calibration; Costs; Electromagnetic wave absorption; Gas detectors; Infrared sensors; Infrared surveillance; Java; Measurement standards; Monitoring; Network interfaces;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE
Print_ISBN :
0-7803-8248-X
DOI :
10.1109/IMTC.2004.1351278
