Characterizing commercially available formaldehyde sensors

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Conference12th International Conference on Indoor Air Quality and Climate: 05 June 2011, Austin, Texas
Pages16; # of pages: 6
Subjectformaldehyde, sensor, indoor air quality, demand controlled ventilation; Indoor air
AbstractFive commercial off-the-shelf (COTS) formaldehyde sensors aimed to monitor indoor concentrations below 10 ppm were tested for their performances, including linearity, hysteresis, repeatability, stability and selectivity. The effects of humidity (9 to 95%) and temperature (10 to 39 oC) were also tested. Three of the COTS sensors (COTS_1, 2 and 3) are electrochemical sensors, while two of them (COTS_4 and 5) are photoelectrical photometry based sensors. COTS_1 performed best in linearity, hysteresis, repeatability, stability and environmental effect tests. However, COTS_1 showed cross-sensitivity to organic gases including aldehydes (acetaldehyde and hexanal), alcohols (ethanol, 2-propanol and 1-butanol) and limonene. COTS_4 showed good performance in linearity, repeatability, stability and sensitivity, but they responded linearly to temperature and relative humidity changes.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number54466
NPARC number20374153
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Record identifiere4e5bfaf-4f0f-4ce8-9de9-30fa3ea9b1f9
Record created2012-07-23
Record modified2016-05-09
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