An automated ozone photometer
A photometer capable of automatically measuring ozone concentration data to very high resolution during scientific research flights in the Earth's atmosphere was developed at NASA Ames Research Center. This instrument was recently deployed to study the ozone hole over Antarctica. Ozone is detec...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19880012020 2023-05-15T13:58:36+02:00 An automated ozone photometer Lavelle, Joseph R. Unclassified, Unlimited, Publicly available Feb 1, 1988 application/pdf http://hdl.handle.net/2060/19880012020 unknown Document ID: 19880012020 Accession ID: 88N21404 http://hdl.handle.net/2060/19880012020 No Copyright CASI ELECTRONICS AND ELECTRICAL ENGINEERING NASA-TM-100064 A-88079 NAS 1.15:100064 1988 ftnasantrs 2019-07-21T09:24:22Z A photometer capable of automatically measuring ozone concentration data to very high resolution during scientific research flights in the Earth's atmosphere was developed at NASA Ames Research Center. This instrument was recently deployed to study the ozone hole over Antarctica. Ozone is detected by absorbing 253.7-nm radiation from an ultraviolet lamp which shines through the sample of air and impinges on a vacuum phototube. A lower output from the phototube indicates more ozone present in the air sample. The photometer employs a CMOS Z80 microprocessor with an STD bus system for experiment control, data collection, and storage. Data are collected and stored in nonvolatile memory for experiments lasting up to 8 hr. Data are downloaded to a portable ground-support computer and processed after the aircraft lands. An independent single-board computer in the STD bus also calculates ozone concentration in real time with less resolution than the CMOS Z80 system, and sends this value to a cockpit meter to aid the pilot in navigation. Other/Unknown Material Antarc* Antarctica NASA Technical Reports Server (NTRS) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
ELECTRONICS AND ELECTRICAL ENGINEERING |
spellingShingle |
ELECTRONICS AND ELECTRICAL ENGINEERING Lavelle, Joseph R. An automated ozone photometer |
topic_facet |
ELECTRONICS AND ELECTRICAL ENGINEERING |
description |
A photometer capable of automatically measuring ozone concentration data to very high resolution during scientific research flights in the Earth's atmosphere was developed at NASA Ames Research Center. This instrument was recently deployed to study the ozone hole over Antarctica. Ozone is detected by absorbing 253.7-nm radiation from an ultraviolet lamp which shines through the sample of air and impinges on a vacuum phototube. A lower output from the phototube indicates more ozone present in the air sample. The photometer employs a CMOS Z80 microprocessor with an STD bus system for experiment control, data collection, and storage. Data are collected and stored in nonvolatile memory for experiments lasting up to 8 hr. Data are downloaded to a portable ground-support computer and processed after the aircraft lands. An independent single-board computer in the STD bus also calculates ozone concentration in real time with less resolution than the CMOS Z80 system, and sends this value to a cockpit meter to aid the pilot in navigation. |
format |
Other/Unknown Material |
author |
Lavelle, Joseph R. |
author_facet |
Lavelle, Joseph R. |
author_sort |
Lavelle, Joseph R. |
title |
An automated ozone photometer |
title_short |
An automated ozone photometer |
title_full |
An automated ozone photometer |
title_fullStr |
An automated ozone photometer |
title_full_unstemmed |
An automated ozone photometer |
title_sort |
automated ozone photometer |
publishDate |
1988 |
url |
http://hdl.handle.net/2060/19880012020 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
CASI |
op_relation |
Document ID: 19880012020 Accession ID: 88N21404 http://hdl.handle.net/2060/19880012020 |
op_rights |
No Copyright |
_version_ |
1766266963152076800 |