Development of fast-response portable NDIR analyzer using semiconductor devices |
| |
Authors: | Email author" target="_blank">Woo-Seok?KimEmail author Jong-Hwa?Lee Young-Moo?Park Jai-Suk?Yoo Kyoung?Seok?Park |
| |
Affiliation: | (1) Thermo Mechanical Properties Lab. Engineering Building East, AJOU Univ., 5 Wonchon-dong, Paldal-gu, Suwon, Korea;(2) School of Mechanical Engineering, Kumoh National University, of Technology, 188 Shinpyung-dong Kumi, Kyungbuk, Korea |
| |
Abstract: | In this paper, a novel fast response NDIR analyzer (FRNDIR), which uses an electrically pulsed semiconductor emitter and dual
type PbSe detector for the PPM-level detection of carbon dioxide (CO2) at a wavelength of 4.28 μm, is described. Modulation of conventional NDIR energy typically occurs at 1 to 20 Hz. To achieve
real time highspeed measurement, the new analyzer employs a semiconductor light emitter that can be modulated by electrical
chopping. Updated measurements are obtained every one millisecond. The detector has two independent lead selenide (PbSe) with
IR band pass filters. Both the emitter accuracy and the detector sensitivity are increased by thermoelectric cooling of up
to —20 degrees C in all semiconductor devices. Here we report the use of semiconductor devices to achieve improved performance
such that these devices have potential application to CO2 gas measurement and, in particular, the measurement of fast response CO2 concentration at millisecond level. |
| |
Keywords: | Fast-Response NDIR Analyzer(FRNDIR) CO2 Concentration Lead Selenide Light Emitter Dual Type Detector Detector Sensitivity Transit Time Time Constant |
本文献已被 SpringerLink 等数据库收录! |
|