Diode Laser Based Formaldehyde Measurements in a Catalytic Trace Contaminant Control System 2000-01-2303
The development of a portable diode laser based gas sensor and its application to sensitive, selective, on-line monitoring of formaldehyde concentrations present in a catalytic Trace Contaminant Control System (TCCS) in a 5-day period in August 1999 is reported. The TCCS was originally developed for the Lunar-Mars Life Support Test program in 1996-1997 at NASA-JSC. The motivation for monitoring H2CO levels in a sealed human rated environment is that its presence can cause headaches, throat and ear irritation at low concentrations (>100 ppb), and more serious adverse effects at higher concentration levels. Consequently, NASA has established a spacecraft maximum allowable H2CO concentration of 40 ppb for crew exposure for a 7 to 180 days period [1].
Citation: Richter, D., Tittel, F., Bahr, J., Wickham, D. et al., "Diode Laser Based Formaldehyde Measurements in a Catalytic Trace Contaminant Control System," SAE Technical Paper 2000-01-2303, 2000, https://doi.org/10.4271/2000-01-2303. Download Citation
Author(s):
D. Richter, F.K. Tittel, J. Bahr, D. Wickham, J. Wright, J. C. Graf
Affiliated:
Rice Quantum Institute, Rice University, TDA Research, Inc.
Pages: 9
Event:
International Conference On Environmental Systems
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Control systems
Carbon monoxide
Head
Sensors and actuators
Lasers
Spacecraft
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