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Title: ARM Airborne Continuous carbon dioxide measurements

Abstract

The heart of the AOS CO2 Airborne Rack Mounted Analyzer System is the AOS Manifold. The AOS Manifold is a nickel coated aluminum analyzer and gas processor designed around two identical nickel-plated gas cells, one for reference gas and one for sample gas. The sample and reference cells are uniquely designed to provide optimal flushing efficiency. These cells are situated between a black-body radiation source and a photo-diode detection system. The AOS manifold also houses flow meters, pressure sensors and control valves. The exhaust from the analyzer flows into a buffer volume which allows for precise pressure control of the analyzer. The final piece of the analyzer is the demodulator board which is used to convert the DC signal generated by the analyzer into an AC response. The resulting output from the demodulator board is an averaged count of CO2 over a specified hertz cycle reported in volts and a corresponding temperature reading. The system computer is responsible for the input of commands and therefore works to control the unit functions such as flow rate, pressure, and valve control.The remainder of the system consists of compressors, reference gases, air drier, electrical cables, and the necessary connecting plumbing to provide amore » dry sample air stream and reference air streams to the AOS manifold.« less

Authors:
Publication Date:
DOE Contract Number:  
DE-AC05-00OR22725
Product Type:
Dataset
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Atmospheric Radiation Measurement (ARM) Archive
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Subject:
54 Environmental Sciences
Keywords:
ARM; biraud-co2; SGP; AOS-CO2
OSTI Identifier:
1069291
DOI:
10.5439/1069291

Citation Formats

Biraud, Sebastien. ARM Airborne Continuous carbon dioxide measurements. United States: N. p., 2013. Web. doi:10.5439/1069291.
Biraud, Sebastien. ARM Airborne Continuous carbon dioxide measurements. United States. doi:10.5439/1069291.
Biraud, Sebastien. 2013. "ARM Airborne Continuous carbon dioxide measurements". United States. doi:10.5439/1069291. https://www.osti.gov/servlets/purl/1069291. Pub date:Tue Mar 26 00:00:00 EDT 2013
@article{osti_1069291,
title = {ARM Airborne Continuous carbon dioxide measurements},
author = {Biraud, Sebastien},
abstractNote = {The heart of the AOS CO2 Airborne Rack Mounted Analyzer System is the AOS Manifold. The AOS Manifold is a nickel coated aluminum analyzer and gas processor designed around two identical nickel-plated gas cells, one for reference gas and one for sample gas. The sample and reference cells are uniquely designed to provide optimal flushing efficiency. These cells are situated between a black-body radiation source and a photo-diode detection system. The AOS manifold also houses flow meters, pressure sensors and control valves. The exhaust from the analyzer flows into a buffer volume which allows for precise pressure control of the analyzer. The final piece of the analyzer is the demodulator board which is used to convert the DC signal generated by the analyzer into an AC response. The resulting output from the demodulator board is an averaged count of CO2 over a specified hertz cycle reported in volts and a corresponding temperature reading. The system computer is responsible for the input of commands and therefore works to control the unit functions such as flow rate, pressure, and valve control.The remainder of the system consists of compressors, reference gases, air drier, electrical cables, and the necessary connecting plumbing to provide a dry sample air stream and reference air streams to the AOS manifold.},
doi = {10.5439/1069291},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {3}
}

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