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In situ ozone instrumentation for 10-Hz measurements - Development and evaluation (1987)

Lawrence, M. ; Ritter, J. A. ; Hudgins, C. H. ; [et al.]

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Publication Date: 2011-08-19

Description: The development of the fast-response ozone detector for the Electra aircraft is described. The selection of a technique to meet the design goal of 10-Hz detection is examined in terms of detection principles, instrument sampling parameters, signal conditioning, and aircraft and sampling environment. An instrument which employs a NO technique for detection of ozone with a reaction chamber volume of 16 cu cm, a pressure of 60 torr, and a sample flow of 1000 standard cu cm/min was developed. Laboratory and flight testings of the detector were conducted in order to evaluate its performance. The data reveal that the fast-response ozone detector is highly reliable with a response of 0.1 sec to 90 percent of reading, has a lower detection limit of 1 ppbv, and an S/N of 20 at 20 ppbv ozone.

Keywords: INSTRUMENTATION AND PHOTOGRAPHY

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