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NDIR Formaldehyde gas detection course

NDIR Formaldehyde gas detection course

2015-12-14Using channel A as a detection channel (giving I D in equation ) and channel B as a reference channel (giving I R in equation ), 10 ppm of formaldehyde in a 1 m gas cell has a calculated equivalent absorbance of 4.2 × 10 −4 AU. This assumes that the light source is ideally 'white', i.e. has a flat spectral output, additional scaling factors ...

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