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    Method for setting an airborne molecular contamination measurement station, and measurement station
    3.
    发明授权
    Method for setting an airborne molecular contamination measurement station, and measurement station 有权

    公开(公告)号：US11953484B2

    公开(公告)日：2024-04-09

    申请号：US17425061

    申请日：2020-01-22

    申请人： PFEIFFER VACUUM

    发明人： Julien Bounouar ,  Olivier Le Barillec ,  Nicolas Chapel

    IPC分类号： G01N33/00 ,  G01N1/22 ,  G01N1/26 ,  G05D7/06

    CPC分类号： G01N33/0075 ,  G01N1/22 ,  G01N1/26 ,  G05D7/0658

    摘要： A setting method includes setting the conductances of the controllable restrictions of an airborne molecular contamination measurement station. The setting method includes an initial identification step, prior to the carrying-out of an airborne molecular contamination measurement step, and during which the sampling line that has the lowest conductance when the conductance of the controllable restriction of the said sampling line is set to its maximum value is determined, and an initial conductance-setting step prior to the carrying-out of the measurement step and after the initial identification step, and during which the conductances of the controllable restrictions are set to make them correspond to the lowest conductance determined in the initial identification step. Further, a measurement station is provided for measuring airborne molecular contamination.

    System and Method for Simultaneously Examining, Maintaining and Calibrating Multiple Sensors and Sensor Types
    4.
    发明公开
    System and Method for Simultaneously Examining, Maintaining and Calibrating Multiple Sensors and Sensor Types 审中-公开

    公开(公告)号：US20240102983A1

    公开(公告)日：2024-03-28

    申请号：US17934557

    申请日：2022-09-22

    申请人： Aircuity, Inc.

    发明人： George Lazea ,  Andrew Szabo

    IPC分类号： G01N33/00

    CPC分类号： G01N33/0075 ,  G01N33/0006 ,  G01N33/0016 ,  G01N33/0067

    摘要： A system and method for simultaneously running a plurality of air quality sensor units using a centralized station and software to test for field performance upon factory return from field installations, automatically identify preventative maintenance requirements, and automatically calibrate the sensor units and generate quality metric reporting. The centralized station and software include a computer, a manifold, tubes, and cables. A test gas is supplied, wherein the manifold distributes the test gas. Once powered and supplied with test gas, the sensor units are tested simultaneously. The computer runs software that compares the test data collected from the sensor units to determine if any of the sensor units fail standards or produce data that deviates from a mean average range. Sensor units that do not require maintenance are calibrated using test gasses to generate calibration coefficients which are stored within the sensors' firmware.

    Leak detection event aggregation and ranking systems and methods
    5.
    发明授权
    Leak detection event aggregation and ranking systems and methods 有权

    公开(公告)号：US11933774B1

    公开(公告)日：2024-03-19

    申请号：US18060111

    申请日：2022-11-30

    申请人： Picarro Inc.

    发明人： Sean MacMullin ,  Chris W. Rella ,  Aaron Van Pelt ,  Alex Balkanski ,  Yonggang He ,  Sze M. Tan ,  David Steele ,  Tim Clark

    IPC分类号： G01N33/00 ,  G01M3/04

    CPC分类号： G01N33/0075 ,  G01M3/04 ,  G01N33/0047

    摘要： In some embodiments, data from multiple vehicle-based natural gas leak detection survey runs are used by computer-implemented machine learning systems to generate a list of natural gas leaks ranked by hazard level. A risk model embodies training data having known hazard levels, and is used to classify newly-discovered leaks. Hazard levels may be expressed by continuous variables, and/or probabilities that a given leak fits within a predefined category of hazard (e.g. Grades 1-3). Each leak is represented by a cluster of leak indications (peaks) originating from a common leak source. Hazard-predictive features may include maximum, minimum, mean, and/or median CH4/amplitude of aggregated leak indications; estimated leak flow rate, determined from an average of leak indications in a cluster; likelihood of leak being natural gas based on other indicator data (e.g. ethane concentration); probability the leak was detected on a given pass; and estimated distance to leak source.

    Integration and active flow control for environmental sensors
    7.
    发明授权
    Integration and active flow control for environmental sensors 有权

    公开(公告)号：US11867679B2

    公开(公告)日：2024-01-09

    申请号：US17686345

    申请日：2022-03-03

    申请人： Aclima Inc.

    发明人： Salvatore Mazzola ,  Bassam Samih Dgheim ,  Davida Herzl ,  Meghan Elizabeth Thurlow

    IPC分类号： G01N33/00

    CPC分类号： G01N33/0075 ,  G01N33/0032

    摘要： A technique for monitoring and collecting environmental data is provided that supports acquisition and analysis of quality measurements of pollutants by sensors based on different technologies in an integrated manner. The system includes a primary substrate having a plurality of sensor modules, each sensor module configured to couple to a sensor, and a manifold having a plurality of flow hoods, each flow hood disposed on a top surface of a sensor and connected to another flow hood or component in the manifold. In some cases, the sensor modules are gas sensor modules, and the sensor is a gas sensor. The manifold thus provides a closed system through which a fluid sample can flow across a series of gas sensors in an actively controlled manner that enables independent flow control over each individual gas sensor while limiting exposure of the fluid sample to potential sources of contamination.