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    IONIZATION GAUGE WITH EMISSION CURRENT AND BIAS POTENTIAL CONTROL
    42.
    发明公开
    IONIZATION GAUGE WITH EMISSION CURRENT AND BIAS POTENTIAL CONTROL 审中-公开
    烟囱烟雾排放测试仪 - VORSPANNUNGSPOTENZIALSTEUERUNG

    公开(公告)号：EP2326931A4

    公开(公告)日：2012-08-08

    申请号：EP09815009

    申请日：2009-09-11

    Applicant: BROOKS AUTOMATION INC

    Inventor： CARMICHAEL LARRY K ,  WEBER JESSE A ,  HENRY JOHN H ,  SCHOTT MICHAEL N ,  BRUCKER GERARDO A ,  VAN ANTWERP KENNETH D

    IPC: G01L21/32

    CPC classification number: G01L21/30 ,  G01L21/32 ,  G01N27/60 ,  G01N27/62 ,  H01J41/02

    Abstract: An ionization gauge that measures pressure has an electron source that emits electrons, and an anode that defines an ionization space. The gauge also includes a collector electrode to collect ions formed by an impact between the electrons and a gas and to measure pressure based on the collected ions. The electron source is dynamically varied in emission current between a plurality of emission levels dependent on pressure and a second parameter other than pressure. The ionization gauge may also vary various operating parameters of the gauge components according to parameters stored in a non-volatile memory and selected by a user.

    Abstract translation: 测量压力的电离计具有发射电子的电子源和限定电离空间的阳极。 该仪表还包括收集器电极以收集由电子和气体之间的冲击形成的离子，并且基于收集的离子来测量压力。 电子源在取决于压力的多个排放水平和除压力之外的第二参数的发射电流之间动态变化。 电离计还可以根据存储在非易失性存储器中并由用户选择的参数来改变量规组件的各种操作参数。

    Photo-ionization detector and method for continuous operation and real-time self-cleaning
    44.
    发明公开
    Photo-ionization detector and method for continuous operation and real-time self-cleaning 有权
    用于连续操作和同时自清洁光电离检测器和方法

    公开(公告)号：EP1262770A3

    公开(公告)日：2003-04-16

    申请号：EP02253724.5

    申请日：2002-05-28

    Applicant: RAE SYSTEMS, INC.

    Inventor： Sun, Hong T. ,  Hsi, Peter C.

    IPC: G01N27/66 ,  G01N27/64 ,  H01J49/16 ,  G01N33/00

    CPC classification number: G01N33/0026 ,  G01N27/66 ,  G01N33/0029 ,  G01N33/0047 ,  H01J41/02

    Abstract: A photo-ionization detector (PID) includes a microprocessor, a first gas detection unit, and a second gas detection unit. The microprocessor controls the first and second gas detection units such that ambient gas always flows through the ionization chamber of one of the gas detection units while the flow of the ambient gas is closed in the ionization chamber of the other one of the gas detection units. The UV lamp converts oxygen in the closed ambient gas to ozone, which removes contamination in the ionization chamber with the closed ambient gas. When the PID includes only one gas detection unit, the microprocessor controls the gas detection unit such that the flow of the ambient gas in the ionization chamber is intermittently interrupted. A method of real-time self-cleaning and measuring of a volatile gas concentration with the PID includes flowing the ambient gas through the ionization chamber of the first gas detection unit, so that the PID measures the volatile gas concentration, and stopping the ambient gas through the ionization chamber of the second gas detection unit so that the ambient gas is closed in the ionization chamber of the second gas detection unit while the ambient gas flows through the ionization chamber of the first gas detection unit. The UV lamp converts oxygen contained in the ambient gas in the ionization chamber of the second gas detection unit to ozone, which removes contamination in the ionization chamber of the second gas detection unit.

    Photo-ionization detector for volatile gases
    45.
    发明公开
    Photo-ionization detector for volatile gases 审中-公开
    Gion的照片

    公开(公告)号：EP0995989A1

    公开(公告)日：2000-04-26

    申请号：EP99308281.7

    申请日：1999-10-20

    Applicant: RAE SYSTEMS, INC.

    Inventor： Sun, Hong T. ,  Hsi, Peter C.

    IPC: G01N27/66

    CPC classification number: G01N33/0029 ,  G01N27/66 ,  G01N33/0047 ,  H01J41/02

    Abstract: The PID includes an ultraviolet (UV) lamp for transmitting a UV light through an optical window into an ionization chamber to ionize volatile gases. An ion detector is disposed in the ionization chamber to detect the produced ions. The ion detector comprises a pair of interdigital electrodes which produce an electrical field that is perpendicular in direction to that of the UV light propagation. A pump is also incorporated into the PID to circulate gases into and out of the ionization chamber. The direction of the circulation is perpendicular to the direction of the electrical field as well as the direction of the UV light propagation. Because the aforementioned directions are perpendicular to each other in three dimensional space, the ion detector of the present invention may be sensitive to concentration ranges up to about 10,000 ppm of ionizable gases.

    Abstract translation: PID包括用于将UV光通过光学窗口传输到电离室中以使挥发性气体离子化的紫外线（UV）灯。 离子检测器设置在电离室中以检测所产生的离子。 离子检测器包括一对叉指电极，其产生与UV光传播方向垂直的电场。 泵也结合在PID中以使气体进入和离开电离室。 循环的方向垂直于电场的方向以及UV光的传播方向。 因为上述方向在三维空间中彼此垂直，所以本发明的离子检测器可以对高达约10,000ppm的可电离气体的浓度范围敏感。

    GAS DETECTION DEVICE AND METHOD
    46.
    发明公开
    GAS DETECTION DEVICE AND METHOD 失效
    装置和方法用于气体检测。

    公开(公告)号：EP0595929A1

    公开(公告)日：1994-05-11

    申请号：EP92915935.0

    申请日：1992-07-17

    Applicant: THE SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND

    Inventor： JONES, Christopher, David

    IPC: G01N27 ,  G01N33 ,  H01J41

    CPC classification number: G01N27/66 ,  G01N33/0011 ,  H01J41/02

    Abstract: Procédé et dispositif améliorés de détection de vapeur ou de gaz ionisable qui peuvent dans des formes d'exécution préférées échantillonner au moins 4 x 10-3 mètres cubes d'air par sec-1 et qui réagissent aux fluctuations du gaz ionisable à une vitesse inférieure ou égale à 100 Hz. On a découvert que l'utilisation du dispositif de cette invention conférait une sensibilité à la vapeur ou au gaz ionisable par les ultra-violets dépassant 500 fois celle des dispositifs de l'état antérieur de la technique et permettait de détecter un gaz traceur de propylène à des concentrations de 2 parties pour 1.000.000.000 augmentant par conséquent l'éloignement de la source de gaz avec lequel on peut utiliser le dispositif de manière fiable. Cette invention concerne également l'utilisation de ce dispositif pour détecter des fuites de composés volatiles pouvant être ionisés par les UV et pour surveiller des processus dans lesquels des vapeurs sont émises.

    Photoionization detector and method for continuous operation and real time self cleaning
    49.
    发明专利
    Photoionization detector and method for continuous operation and real time self cleaning 有权
    光电探测器和连续运行和实时自清洁方法

    公开(公告)号：JP2003066008A

    公开(公告)日：2003-03-05

    申请号：JP2002155806

    申请日：2002-05-29

    Applicant: Rae Systems Inc ,  ラエ・システムズ・インコーポレイテッド

    Inventor： SUN HONG T ,  HSI PETER C

    IPC: G01N27/64 ,  G01N27/66 ,  G01N33/00 ,  H01J41/02

    CPC classification number: G01N33/0026 ,  G01N27/66 ,  G01N33/0029 ,  G01N33/0047 ,  H01J41/02

    Abstract: PROBLEM TO BE SOLVED: To provide a photoionization detector (PID) capable of simultaneously carrying out measurement and self-cleaning.
    SOLUTION: This photoionization detector PID has a microprocessor (MP), a first gas detecting unit (DUI), and a second gas detecting unit (DU2). The MP controls the DU1 and the DU2, and it always streams environmental gas (EG) through one ionization chamber (ICh) and detains the EG in the ICh of the other DU. A UV lamp (UV) converts oxygen in the EG to ozone, and it removes contaminated substances in the ICh. When the PID has only one DU, the MP controls the DU, and intermittently interrupts the flow of the EG of the ICh. As for measurement of real time self-cleaning and concentration of volatile gas (VG) by the PID, the PID measures the concentration of the VG by streaming the EG through the ICh of the DU1, and the EG passing through the ICh of the DU2 is hermetically sealed in the inside to be used for self- cleaning. The UV converts oxygen contained in the EG in the ICh of the DU2 to ozone, and removes contaminated substances in the ICh of the DU2.
    COPYRIGHT: (C)2003,JPO

    Abstract translation: 要解决的问题：提供能够同时进行测量和自清洁的光电离检测器（PID）。 解决方案：该光电离检测器PID具有微处理器（MP），第一气体检测单元（DUI）和第二气体检测单元（DU2）。 MP控制DU1和DU2，它总是通过一个电离室（ICh）流出环境气体（EG），并扣留另一个DU的ICh中的EG。 UV灯（UV）将EG中的氧气转化为臭氧，并清除ICh中的污染物质。 当PID只有一个DU时，MP控制DU，间歇地中断ICh的EG的流动。 对于PID的实时自清洁和挥发性气体浓度的测量，PID通过DU1的ICh流动EG测量VG的浓度，EG通过DU2的ICh 密封在内部用于自洁。 UV将DU2的ICh中的EG中所含的氧转化为臭氧，并除去DU2的ICh中的污染物质。

    IONIZATION GAUGE FOR HIGH PRESSURE OPERATION
    50.
    发明申请
    IONIZATION GAUGE FOR HIGH PRESSURE OPERATION 有权

    公开(公告)号：US20170146420A1

    公开(公告)日：2017-05-25

    申请号：US15421805

    申请日：2017-02-01

    Applicant: MKS Instruments, Inc.

    Inventor： Gerardo A. Brucker

    IPC: G01L21/32 ,  H01J41/04 ,  H01J1/52 ,  G01L19/06

    CPC classification number: G01L21/32 ,  G01L19/0627 ,  G01L21/30 ,  H01J1/52 ,  H01J41/02 ,  H01J41/04

    Abstract: An ionization gauge to measure pressure, while controlling the location of deposits resulting from sputtering when operating at high pressure, includes at least one electron source that emits electrons, and an anode that defines an ionization volume. The ionization gauge also includes a collector electrode that collects ions formed by collisions between the electrons and gas molecules and atoms in the ionization volume, to provide a gas pressure output. The electron source can be positioned at an end of the ionization volume, such that the exposure of the electron source to atom flux sputtered off the collector electrode and envelope surface is minimized. Alternatively, the ionization gauge can include a first shade outside of the ionization volume, the first shade being located between the electron source and the collector electrode, and, optionally, a second shade between the envelope and the electron source, such that atoms sputtered off the envelope are inhibited from depositing on the electron source.

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