Programmable logic controller-based system and user interface for air sampling controlled environments
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United States of America Patent
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Apr 30, 2024
Grant Date -
Feb 11, 2021
app pub date -
Oct 14, 2020
filing date -
Aug 28, 2014
priority date (Note) -
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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.
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