会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明公开
    • Ionization gauge and method of using and calibrating same
    • 离子浓度计及其使用和校准方法
    • EP0537770A3
    • 1993-07-28
    • EP92117733.3
    • 1992-10-16
    • Granville-Phillips Company
    • Bills, Daniel GranvilleBorenstein, Michael DaleArnold, Paul Clarke
    • H01J41/04G01L21/32
    • H01J41/04G01L21/32
    • Ionization gauge and method of operating same where the gauge may be of the Bayard-Alpert type and include a shield which completely encloses the electron source, the anode, and the collector electrode so that potentials external to the shield do not disturb the electric charge distribution within the shielded volume to thus stabilize the sensity of the gauge. The ionization gauge is further characterized by the following features which may be present either alone or in combination including: (a) the anode is provided with end caps which extend radially inward at least 25 % of the radius of the anode but not more than 75 % of the radius; (b) the ion collector has a diameter of not less than 0.015 in. and not more than 0.080 in.; (c) the ion collector extends at its free end at least through one of the partial end caps of the anode; (d) the electron source is not substantially longer axially than the region within the anode volume in which the electric field is predominantly directed radially inward and where the electron source is located substantially only adjacent to the foregoing region; (e) the anode is provided with a substantially uniformly transparent grid structure in the regions where the electrons enter the anode volume and where they exit the anode volume. A controller circuitry and method for controlling the operation of the ionization gauge has a source of electrons, an anode, and an ion collector electrode, including storing a plurality of calibration data sets for at least collector electrode currents and gauge sensitivities obtained with at least one reference gauge at representative values of known pressures; and calculating the gauge sensitivity corresponding to an unknown pressure in response to at least one of the data sets together with a measured value of the ion collector current. The data sets may also include representative values of the heating powers of the electron source so that the calculated sensitivity may also be compensated for variations in the electron source heating power.
    • 9. 发明公开
    • IONIZATION VACUUM GAUGE
    • 电离真空计
    • EP1890124A1
    • 2008-02-20
    • EP06746359.6
    • 2006-05-08
    • Vaclab Inc.
    • WATANABE, FumioWATANABE, Reiki
    • G01L21/32H01J41/04
    • G01L21/32H01J41/04
    • An ionization vacuum gauge which has at least three electrodes of a grid (2), an electron source (3) and an ion collector (1) in a vacuum vessel(4) connected in communication with a vacuum apparatus, oscillates electrons emitted from the electron source (3) within and outside of the grid (2), ionizes gas molecules flying into the grid (2) by the oscillated electrons, supplements the ionized ions by the ion collector (1) to convert into a current signal, and measures a gas molecular density (pressure) in the vacuum apparatus according to the obtained current intensity, wherein the ion collector (1) is provided with heating means for heating the ion collector.
    • 在与真空装置连通的真空容器(4)中具有格栅(2),电子源(3)和离子收集器(1)中的至少三个电极的电离真空计振荡从 在电网(2)内部和外部的电子源(3)使通过振荡电子飞入栅格(2)的气体分子电离,通过离子收集器(1)补充离子化离子以转换成电流信号, 根据获得的电流强度确定真空设备中的气体分子密度(压力),其中离子收集器(1)设置有用于加热离子收集器的加热装置。