GAS DETECTOR WITH NORMALIZED RESPONSE AND IMPROVED SENSITIVITY

摘要

A non-dispersive photoacoustic gas detector (100) comprises an infrared light source (102), a closed chamber (106), a gas sample disposed within the closed chamber, and an acoustic sensor (108) in fluid communication with the closed chamber. The closed chamber comprises at least one window (105) that is substantially transparent to infrared light from the infrared light source, and the gas sample comprises a gas or a mixture of at least two gases.