公开(公告)号：WO2014075064A2

公开(公告)日：2014-05-15

申请号：PCT/US2013069654

申请日：2013-11-12

Applicant: UNIV NORTHEASTERN

Inventor： LI BO ,  HAO JI ,  JUNG HYUN YOUNG ,  JUNG YUNG JOON ,  KAR SWASTIK

IPC: H01J49/02

CPC classification number: G01N27/70 ,  G01N27/62 ,  H01J41/02 ,  H01J47/02 ,  H01J49/025

Abstract: An ion detection device has a strip of carbon-based nanomaterial (CNM) film and a chamber enclosing the CNM film. A low bias voltage is applied at the ends of the CNM film strip, and ions present in the chamber are detected by a change in the magnitude of current flowing through the CNM film under the bias. Also provided are methods for fabricating the device, methods for measuring pressure of a gas, and methods for monitoring or quantifying an ionizing radiation using the device.

Abstract translation: 离子检测装置具有碳基纳米材料（CNM）带和包围CNM膜的室。 在CNM膜条的端部施加低偏压，并且通过在偏压下流过CNM膜的电流的大小的变化来检测存在于室中的离子。 还提供了用于制造装置的方法，用于测量气体压力的方法，以及使用该装置监测或定量电离辐射的方法。

公开(公告)号：WO1993002354A1

公开(公告)日：1993-02-04

申请号：PCT/GB1992001313

申请日：1992-07-17

Applicant: THE SECRETARY OF STATE FOR DEFENCE IN HER ... ,  JONES, Christopher, David

Inventor： THE SECRETARY OF STATE FOR DEFENCE IN HER ...

IPC: G01N27/66

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

Abstract: An improved ionisable gas or vapour detector device and method are provided which are capable in preferred forms of sampling 4 x 10-3 cubic metres or more of air sec-1 and are responsive to ionisable gas fluctuations at a rate of up to 100 Hz. Use of the device of the present invention has proved to provide sensitivity to UV ionisable gas or vapour of over 500 times that of prior devices, giving detection of propylene tracer gas at concentrations of 2 parts per 1,000,000,000 and thus increasing the range from the gas source at which the device may be reliably used. Use for detection of leaks of volatile UV ionisable compounds and for monitoring processes where vapours are emitted is also provided.

公开(公告)号：US09995839B2

公开(公告)日：2018-06-12

申请号：US15311937

申请日：2015-05-22

Applicant: Gerd Reime

Inventor： Gerd Reime

IPC: G01R27/28 ,  G01V3/10 ,  G01R27/26 ,  G01R27/00 ,  G01N27/02 ,  G01N27/62 ,  H01J41/02 ,  H01J41/00 ,  G01N27/64

CPC classification number: G01V3/10 ,  G01N27/028 ,  G01N27/62 ,  G01N27/64 ,  G01R27/00 ,  G01R27/26 ,  G01R27/2611 ,  G01R27/267 ,  H01J41/00 ,  H01J41/02

Abstract: In a method for determining at least one physical parameter, a sensor unit which is activated by at least one periodic excitation (1.4) is provided, wherein the sensor unit has at least one detection region in which changes of the parameter in the surroundings of the sensor unit lead to output signal (1.7) from the sensor unit. The sensor unit is wired such that if there are no changes of the parameter in the detection region the output signal (1.7) is a zero signal or virtually a zero signal at the output of the sensor unit, whereas if there are changes of the parameter in the detection region the output signal (1.7) is a signal that is not zero and has a specific amplitude and phase. In a closed control loop, the non-zero signal in the receive path is adjusted to zero using a control signal to achieve an adjusted state even in the presence of changes of the parameter in the detection region. The control signal is evaluated in order to determine the physical parameter. The output signal (1.7) from the sensor unit is reduced substantially to the fundamental wave of the excitation (1.4) and the output signal (1.7) is controlled to zero in the entire phase space by means of at least one pulse width modulation. A temperature-stable, fully digital measuring system is provided as a result of the fact that the at least one pulse width modulation itself generates a correction signal with a variable pulse width and possibly a variable phase which is then added to the output signal (1.7) from the sensor unit and the output signal is thereby controlled to zero in the entire phase space, wherein the pulse width of the correction signal and/or the phase of the correction signal is/are determined by the deviations of the output signal (1.7) from zero.

公开(公告)号：US08947098B2

公开(公告)日：2015-02-03

申请号：US13051430

申请日：2011-03-18

Applicant: Larry K. Carmichael ,  Jesse A. Weber ,  John H. Henry ,  Michael N. Schott ,  Gerardo A. Brucker ,  Kenneth D. Van Antwerp, Jr.

Inventor： Larry K. Carmichael ,  Jesse A. Weber ,  John H. Henry ,  Michael N. Schott ,  Gerardo A. Brucker ,  Kenneth D. Van Antwerp, Jr.

IPC: G01L21/30 ,  G01L21/32 ,  H01J41/02

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。 该量规还包括收集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。

公开(公告)号：US07906971B2

公开(公告)日：2011-03-15

申请号：US12250785

申请日：2008-10-14

Applicant: Benjamin Aaron Boardwine ,  Derrick Lamont Journiette

Inventor： Benjamin Aaron Boardwine ,  Derrick Lamont Journiette

IPC: G01L21/30

CPC classification number: G01N27/62 ,  H01J41/02

Abstract: A system for measuring gas density in a vacuum includes a gauge, a housing for containing the gauge, and a magnet secured to an exterior surface of the housing. The magnet is a flexible magnetic strips, and positioned around the exterior surface of the housing. The gauge includes grid insulator posts extending longitudinally along a tubular section of the housing, and the magnet is secured to the exterior surface of the housing adjacent to the grid insulator posts, and oriented transversely to the grid insulator posts. The magnet is a flexible magnetic strip, and a clamp secures the magnet to the exterior surface of the housing.

Abstract translation: 用于测量真空中气体密度的系统包括测量计，用于容纳测量计的壳体和固定到壳体的外表面的磁体。 磁体是柔性磁条，并且围绕壳体的外表面定位。 该测量仪包括沿壳体的管状部分纵向延伸的栅格绝缘体柱，并且磁体固定到壳体的与栅格绝缘体柱相邻的外表面，并横向于栅格绝缘体柱。 磁体是柔性磁条，夹具将磁体固定在外壳的外表面上。

公开(公告)号：US5773833A

公开(公告)日：1998-06-30

申请号：US620635

申请日：1996-03-22

Applicant: Peter C. Hsi

Inventor： Peter C. Hsi

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

CPC classification number: G01N27/64 ,  G01N27/66 ,  G01N33/0047 ,  H01J41/02

Abstract: A photo-ionization detector (PID) which measures volatile organic gas uses electrically insulated parallel plates to energize a miniaturized gas discharge UV lamp and an energy efficient method to modulate the UV lamp intensity and reduce power consumption. A miniaturized centrifugal pump is integrated into the PID to provide active sampling for fast response to volatile gas. An ionization chamber in the PID includes a UV shield which protects a measurement electrode from UV light and a UV monitor which measures changes in UV intensity due to external interferences and UV lamp variations. A microprocessor in the PID uses measurements from the measurement electrode and from the UV monitor to accurately account for UV intensity variations when determining a volatile gas concentration.

Abstract translation: 测量挥发性有机气体的光电离检测器（PID）使用电绝缘平行板来激励小型化气体放电UV灯和能量效率方法来调节UV灯强度并降低功耗。 PID集成了一台小型化离心泵，为挥发性气体快速响应提供主动取样。 PID中的电离室包括保护测量电极免受紫外线的UV屏蔽和测量由于外部干扰和UV灯变化引起的UV强度变化的UV监视器。 PID中的微处理器使用来自测量电极和UV监测器的测量来精确计算确定挥发性气体浓度时的紫外线强度变化。

公开(公告)号：US3297944A

公开(公告)日：1967-01-10

申请号：US24904463

申请日：1963-01-02

Applicant: HUGHES AIRCRAFT CO

Inventor： PAUL NEKTAREDES ,  SCAPPLE ROBERT Y

IPC: C23C14/54 ,  H01J41/02

CPC classification number: C23C14/544 ,  H01J41/02

公开(公告)号：US3171028A

公开(公告)日：1965-02-23

申请号：US13714161

申请日：1961-09-11

Applicant: NAT RES DEV

Inventor： EPHRAIM LOVELOCK JAMES

IPC: G01N27/62 ,  G01N27/66 ,  G01N30/70 ,  H01J41/02 ,  H01J41/06

CPC classification number: G01N27/66 ,  G01N27/62 ,  G01N30/70 ,  H01J41/02 ,  H01J41/06

公开(公告)号：US2922911A

公开(公告)日：1960-01-26

申请号：US60753156

申请日：1956-08-31

Applicant: HERBERT FRIEDMAN

Inventor： HERBERT FRIEDMAN

IPC: G01N21/33 ,  H01J41/02

CPC classification number: G01N21/33 ,  H01J41/02

公开(公告)号：KR1020140127859A

公开(公告)日：2014-11-04

申请号：KR1020147024871

申请日：2013-02-07

Applicant: 엠케이에스 인스트루먼츠, 인코포레이티드

Inventor： 브룩커,게랄드,에이.

IPC: G01L21/32

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

Abstract: 고압에서 작동할 때 스퍼터링 결과로 생기는 증착들의 위치를 조절하는 동안 압력을 측정하는 이온화 게이지는, 전자를 방출하는 하나 이상의 전자 소스 및 이온화 용적을 한정하는 애노드를 포함한다. 가스 압력 출력을 제공하기 위해 이온화 게이지는 이온화 용적 내에서 전자들과 가스 분자들 및 원자들 사이에 충돌들에 의해 형성된 이온들을 수집하는 콜렉터 전극을 또한 포함한다. 콜렉터 전극 및 외피 표면에서 스퍼터링된 원자 플럭스(atom flux)에 대한 전자 소스의 노출을 최소화하도록 전자 소스는 이온화 용적 단부에 위치될 수 있다. 대안적으로, 이온화 게이지는 이온화 용적의 외부에 제 1 쉐이드를 포함할 수 있으며, 제 1 쉐이드는 전자 소스와 컬렉터 전극 사이에 위치되고, 외피에서 스퍼터링된 원자들이 전자 소스 상에 증착하는 것을 억제하도록 제 2 쉐이드는 선택적으로 외피와 전자 소스 사이에 위치된다.

Abstract translation: 用于测量压力的电离计，同时控制在高压下操作时由溅射产生的沉积物的位置，包括至少一个发射电子的电子源和限定电离体积的阳极。 电离计还包括收集电极，其收集由电子和气体分子之间的碰撞形成的离子和电离体积中的原子，以提供气体压力输出。 电子源可以位于电离体积的末端，使得电子源暴露于从集电极电极和包膜表面溅射的原子通量被最小化。 或者，电离计可以包括离子化体积外的第一阴影，第一阴影位于电子源和集电极之间，以及可选地，在封套和电子源之间的第二阴影，使得原子溅射 该封套被禁止沉积在电子源上。