公开(公告)号：US20230236151A1

公开(公告)日：2023-07-27

申请号：US18003778

申请日：2021-06-29

申请人： SMITHS DETECTION-WATFORD LIMITED

发明人： Oliver Jon LIPSCOMBE ,  Alex Edward PARKER ,  Alastair CLARK ,  Alastair BEADLE

IPC分类号： G01N27/622 ,  B01D53/04

CPC分类号： G01N27/622 ,  B01D53/0438 ,  B01D2253/108 ,  B01D2257/80 ,  B01D2258/06 ,  B01D2259/40088

摘要： A method of operating an air purification system (24″) of an ion mobility spectrometer, the method comprising: operating the ion mobility spectrometer in a first sampling mode comprising circulating a flow of air around a closed air circulation system comprising a drift chamber (12) of the ion mobility spectrometer and a first sieve (70) of the air purification system; and operating the ion mobility spectrometer in a first regeneration mode comprising heating the first sieve and circulating a first flow of air through a second sieve (72) of the air purification system and through the drift chamber (12) while passing a second flow of air through the first sieve (70) to an outtake (76).