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公开(公告)号:US09823237B2
公开(公告)日:2017-11-21
申请号:US15090948
申请日:2016-04-05
IPC分类号: G01J5/02 , G01N33/497 , G01N21/3504 , G01N21/31 , G01N33/00 , G01N21/03 , G01N21/15
CPC分类号: G01N33/4972 , G01N21/031 , G01N21/0332 , G01N21/314 , G01N21/3504 , G01N33/0026 , G01N33/0031 , G01N33/004 , G01N2021/158 , G01N2021/3196 , G01N2201/068 , G01N2201/128
摘要: Systems, apparatus and methods determine the presence of a volatile substance in expired breath. Alcohol concentrations can be determined from expired breath through the use of electromagnetic detection. The systems, apparatus and methods allow measurements of volatile substances to be done accurately and quickly over a wide range of temperatures, and are easily incorporated into vehicles.