公开(公告)号：EP3186564A4

公开(公告)日：2018-02-28

申请号：EP15835212

申请日：2015-08-21

Applicant: VELTEK ASS INC

Inventor： KOCHER NATHAN G

IPC: G01N33/00 ,  F24F11/00 ,  F24F11/50 ,  G01N1/22

CPC classification number: G01N33/0011 ,  F24F11/50 ,  F24F2011/0005 ,  G01N1/2273 ,  G01N33/0073

Abstract: A system and method for sampling air at multiple locations in a controlled environment. The system and method includes automatic adjustment of mass flow rates and duration of vacuum connections (either via time elapsed or indirectly by volume) based on rates set by an operator. Additionally, the system and method enables users to monitor and control aspects of the system via network-connected devices. Additionally, the system enable a vacuum pump to be disconnected from power in response to a physical emergency button, a software-based emergency stop button available on network connected devices, and an automatic power disconnection in response to an abnormal mass flow reading that could potentially impact the vacuum pump.