Mass flow verification based on rate of pressure decay

    公开(公告)号:US11604089B2

    公开(公告)日:2023-03-14

    申请号:US17247091

    申请日:2020-11-30

    摘要: An electronic device manufacturing system includes: a gas supply; a mass flow controller (MFC) coupled to the gas supply; an inlet coupled to the MFC; an outlet; a control volume serially coupled to the inlet to receive a gas flow; and a flow restrictor serially coupled to the control volume and the outlet. A controller is adapted to allow the gas supply to flow gas through the control volume and the flow restrictor to achieve a stable pressure in the control volume, terminate the gas flow from the gas supply, and measure a rate of pressure decay in the control volume over time. A process chamber is coupled to a flow path, which is coupled to the mass flow controller, the process chamber to receive one or more process chemistries via the mass flow controller.

    Injector pressure calibration system and method

    公开(公告)号:US11598664B2

    公开(公告)日:2023-03-07

    申请号:US16621784

    申请日:2018-08-28

    摘要: A calibration system for calibrating a pressure output of a fluid injector having a housing configured for connecting to the fluid injector; a drive member engagement portion configured for contacting a drive member of the fluid injector; a compressible member, which may have a known modulus of compression, connected at its proximal end to the drive member engagement portion, wherein the compressible member is compressed with movement of the drive member of the fluid injector between a first, uncompressed position and a second, at least partially compressed position of the fluid injector in a distal direction; and a sensor connected to the compressible member is described. The sensor is configured for measuring at least one of a force imparted by the drive member and a displacement of the drive member when the compressible member is in the second, at least partially compressed position. The system may generate a calibration curve for the drive member of the fluid injector and allow the generation of a fault condition. Methods for calibrating a fluid injector are also described.

    Preventive maintenance of fuel dispensers through inventory reconciliation and identification of meter drift

    公开(公告)号:US11912561B2

    公开(公告)日:2024-02-27

    申请号:US17133020

    申请日:2020-12-23

    摘要: In one aspect, fuel inventory data characterizing a level of fuel stored at a fuel storage facility can be received from a sensor in operable communication with the fuel storage facility. Flow meter data characterizing an amount of fuel dispensed from the fuel storage facility by a fuel dispenser nozzle can be received from a flow meter in fluid communication with the fuel dispenser nozzle and the fuel storage facility. Fuel transaction data characterizing the dispensing of fuel by the fuel dispenser nozzle and the dispensing of the fuel by one or more additional fuel dispenser nozzles in fluid communication with the fuel storage facility can be received. An estimate of meter drift characterizing a change in calibration of the flow meter can be determined based on the fuel inventory data, the flow meter data, and the fuel transaction data. The estimate of meter drift can be provided.

    Line Volume Calibration Systems And Methods

    公开(公告)号:US20230119629A1

    公开(公告)日:2023-04-20

    申请号:US18069264

    申请日:2022-12-21

    发明人: Glen Davis

    IPC分类号: G01F25/17 G01F15/00 G01N29/22

    摘要: Provided are systems and methods for line volume calibration, and measurement of fluid samples delivered to an interrogation point. In various embodiments, a known fluid volume comprising a sample line fluid and a secondary fluid is delivered to a fluid boundary sensor. The fluid boundary sensor assists in determining the position of the boundaries between the various fluids, and the positions of these boundaries are used to determine the sample line fluid volume.

    Line volume calibration systems and methods

    公开(公告)号:US11573118B2

    公开(公告)日:2023-02-07

    申请号:US16892502

    申请日:2020-06-04

    发明人: Glen Davis

    IPC分类号: G01N29/22 G01F25/17 G01F15/00

    摘要: Provided are systems and methods for line volume calibration, and measurement of fluid samples delivered to an interrogation point. In various embodiments, a known fluid volume comprising a sample line fluid and a secondary fluid is delivered to a fluid boundary sensor. The fluid boundary sensor assists in determining the position of the boundaries between the various fluids, and the positions of these boundaries are used to determine the sample line fluid volume.

    Line Volume Calibration Systems And Methods
    10.
    发明公开

    公开(公告)号:US20230358594A1

    公开(公告)日:2023-11-09

    申请号:US18351562

    申请日:2023-07-13

    发明人: Glen Davis

    IPC分类号: G01F25/17 G01F15/00 G01N29/22

    摘要: Provided are systems and methods for line volume calibration, and measurement of fluid samples delivered to an interrogation point. In various embodiments, a known fluid volume comprising a sample line fluid and a secondary fluid is delivered to a fluid boundary sensor. The fluid boundary sensor assists in determining the position of the boundaries between the various fluids, and the positions of these boundaries are used to determine the sample line fluid volume.