Does acoustic gas sensors present limitations in identifiying gas molecules in multigas stream?
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Acoustic gas sensors have limitations in identifying gas molecules in a multigas stream. The selectivity of uncoated sensors is poor or non-existent, making it difficult to distinguish between different gases . However, there are techniques that have been developed to overcome this limitation. For example, the use of multi-resonance photoacoustic spectroscopy (M-PAS) allows for simultaneous detection of multiple gas molecules, such as H2O, CO2, and CH4 . Another approach is the development of a dual-gas photoacoustic spectroscopy (PAS) sensor based on wavelength modulation spectroscopy (WMS), which enables the simultaneous measurement of NH3 and CH4 . Additionally, an all-optical miniaturized multigas simultaneous detection photoacoustic (PA) sensor has been proposed, which can detect gases like C2H2, H2S, and CH4 with high sensitivity . These advancements in acoustic gas sensing techniques provide new possibilities for multigas analysis with improved selectivity and sensitivity.
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| Papers (4) | Insight |
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| The provided paper discusses the use of uncoated capacitive micromachined ultrasonic transducers (CMUTs) for gas discrimination. It does not specifically mention limitations of acoustic gas sensors in identifying gas molecules in a multigas stream. | |
5 Citations | The paper does not specifically mention limitations of acoustic gas sensors in identifying gas molecules in a multigas stream. |
9 Citations | The paper does not specifically mention "acoustic gas sensors" or their limitations in identifying gas molecules in a multigas stream. |
8 Citations | The provided paper does not mention any limitations of acoustic gas sensors in identifying gas molecules in a multigas stream. |
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