公开(公告)号：US11154794B2

公开(公告)日：2021-10-26

申请号：US15728390

申请日：2017-10-09

申请人： PERKINELMER HEALTH SCIENCES, INC.

发明人： Nathan L. Porter ,  Anthony D. Rands ,  Randal W. Waite ,  Kenneth D. Nemelka ,  Chad B Grant

IPC分类号： B01D15/12 ,  B01D59/44 ,  G01F1/72 ,  G01N1/22 ,  G01N1/24 ,  G01N1/40 ,  G01N30/30 ,  G01N30/96 ,  G01N15/08 ,  G01N30/62 ,  G01N30/02 ,  G01N30/12

摘要： Certain configurations of devices and systems which are configured to draw a selected volume of an air sample into a trap are described. In some examples, the devices and systems comprise a pump and a mass flow sensor to draw a selected volume of the air sample through a trap even where variable restriction occurs.

公开(公告)号：US20180140970A1

公开(公告)日：2018-05-24

申请号：US15728390

申请日：2017-10-09

申请人： PERKINELMER HEALTH SCIENCES, INC.

发明人： Nathan L. Porter ,  Anthony D. Rands ,  Randal W. Waite ,  Kenneth D. Nemelka ,  Chad A. Grant

IPC分类号： B01D15/12 ,  B01D59/44 ,  G01N30/30 ,  G01N15/08 ,  G01F1/72 ,  G01N30/96 ,  G01N1/40

CPC分类号： B01D15/12 ,  B01D59/44 ,  G01F1/72 ,  G01N1/2214 ,  G01N1/24 ,  G01N1/40 ,  G01N15/0826 ,  G01N30/30 ,  G01N30/96 ,  G01N2001/2297 ,  G01N2030/025 ,  G01N2030/128 ,  G01N2030/626

摘要： Certain configurations of devices and systems which are configured to draw a selected volume of an air sample into a trap are described. In some examples, the devices and systems comprise a pump and a mass flow sensor to draw a selected volume of the air sample through a trap even where variable restriction occurs.