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公开(公告)号：EP0622621A3
公开(公告)日：1995-03-29
申请号：EP94301848.1
申请日：1994-03-15
摘要： A cold cathode ionization gauge includes a first electrode (12) and a second electrode (20) which are spaced apart and insulated from one another and have a common axis. A magnetic field generator surrounds the gauge and applies a magnetic field along the common axis of the electrodes. The magnetic field generator includes at least one pair of opposed axially magnetized magnets (32, 34) adjacent to each other. The magnet arrangement minimizes magnetic flux outside the gauge while increasing the strength of the magnetic flux inside the gauge. The magnetic arrangement also allows the gauge to be ignited in a very high vacuum, thereby extending the operating range of the gauge.
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公开(公告)号：EP0626573A3
公开(公告)日：1995-03-29
申请号：EP94301849.9
申请日：1994-03-15
IPC分类号： G01L21/14
CPC分类号： G01L21/14
摘要： A thermocouple vacuum gauge includes a first thermocouple element (14) spaced below a second thermocouple element (16). The two thermocouple elements are electrically connected in series in a back-to-back manner by connecting together their respective negative ends. A pulse generator (50) supplies a pulsing on-off current only to the first thermocouple element (14). During the off intervals, a switch (44) connects the positive ends of both thermocouple elements to a voltage measuring and comparing circuit (42) which measures a thermally generated voltage signal between the positive ends of the thermocouple elements and compares the measured voltage signal to a reference signal. The result of the comparison is used to vary the output current of the pulse generator so as to supply an amount of current to the first thermocouple element sufficient to cause the measured voltage signal to approach the reference signal. The amount of current supplied sufficient to cause the measured voltage signal to approach the reference signal is proportional to the amount of pressure or vacuum in an enclosure in which the thermocouples of the vacuum gauge are placed.
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公开(公告)号：EP1461587B1
公开(公告)日：2007-07-18
申请号：EP02805590.3
申请日：2002-12-13
发明人： GREWAY, Charles, E.
CPC分类号： G01C25/00 , G01C9/06 , G01C9/18 , G01C2009/068 , G01C2009/182
摘要： An electrolytic tilt sensor is disclosed which comprises a containment envelope having a metallic container and a header, the envelope defining a chamber and having at least one pair of apertures, an electrolytic solution partially filling the chamber, and at least one pair of electrodes, each electrode including an electrically active, transverse portion positioned within the chamber in a general horizontal alignment with one another defining a tilt axis, and a lead portion extending to the exterior of the envelope through the respective aperture. The tilt sensor may further include a sealing material disposed in each aperture of the providing a substantial fluid-tight seal about the respective electrode.
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4.发明公开BAYARD-ALPERT VACUUM GAUGE WITH NEUTRALIZATION OF X-RAY EFFECT 失效VACUUM MESSANDORNUNG NACH BAYARD-ALPERT MIT中和型X射线效应
公开(公告)号：EP0980512A1
公开(公告)日：2000-02-23
申请号：EP98920951.5
申请日：1998-05-08
摘要： A Bayard-Alpert gas pressure measuring gauge with x-ray effect neutralization comprising collector and shield electrodes that comprise the same substantially inert electrically conductive substances. Said inert substance may be gold or another substance from the group consisting of platinum and rhodium, and mixtures thereof, and alloys comprising gold, platinum or rhodium; or said substance may be selected from the group consisting of the oxides of indium, chromium, vanadium and tin, mixtures thereof, and alloys comprising one of these. An electrical potential is applied to the shield that is more negative than the potential applied to the collector, said potential on the shield being in the range from about zero volts to about -50 volts when the collector is operated at a positive potential. Said negative potential with respect to the collector enhances the reverse x-ray effect for cancellation of the forward x-ray effect in the gauge. The gauge may also comprise a modified collector geometry to further enhance the reverse x-ray effect to achieve neutralization of the total x-ray effect. A method for neutralization of the x-ray effect by modulating the shield potential is also disclosed.
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公开(公告)号：EP0626573A2
公开(公告)日：1994-11-30
申请号：EP94301849.9
申请日：1994-03-15
IPC分类号： G01L21/14
CPC分类号： G01L21/14
摘要： A thermocouple vacuum gauge includes a first thermocouple element (14) spaced below a second thermocouple element (16). The two thermocouple elements are electrically connected in series in a back-to-back manner by connecting together their respective negative ends. A pulse generator (50) supplies a pulsing on-off current only to the first thermocouple element (14). During the off intervals, a switch (44) connects the positive ends of both thermocouple elements to a voltage measuring and comparing circuit (42) which measures a thermally generated voltage signal between the positive ends of the thermocouple elements and compares the measured voltage signal to a reference signal. The result of the comparison is used to vary the output current of the pulse generator so as to supply an amount of current to the first thermocouple element sufficient to cause the measured voltage signal to approach the reference signal. The amount of current supplied sufficient to cause the measured voltage signal to approach the reference signal is proportional to the amount of pressure or vacuum in an enclosure in which the thermocouples of the vacuum gauge are placed.
摘要翻译： 热电偶真空计包括在第二热电偶元件下方间隔开的第一热电偶元件。 两个热电偶通过将它们各自的负端连接在一起而以背靠背的方式串联电连接。 脉冲发生器仅向第一热电偶提供脉冲开关电流。 在关闭间隔期间，在热电偶的正端之间测量热产生的电压信号，并与参考信号进行比较。 比较结果用于改变脉冲发生器的输出电流。 提供足以使测量的电压信号接近参考信号的电流量与放置热电偶的外壳中的压力或真空量成比例。
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公开(公告)号：EP1461587A2
公开(公告)日：2004-09-29
申请号：EP02805590.3
申请日：2002-12-13
发明人： GREWAY, Charles, E.
CPC分类号： G01C25/00 , G01C9/06 , G01C9/18 , G01C2009/068 , G01C2009/182
摘要： An electrolytic tilt sensor (30) is disclosed which comprises a containment envelope having a metallic container (32) and a header (44) , the envelope defining a chamber (36) and having at least one pair of apertures (46) , an electrolytic solution (37) partially filling the chamber, and at least one pair of electrodes (54) , each electrode including an electrically active, transverse portion (54) positioned within the chamber in a general horizontal alignment with one another defining a tilt axis, and a lead portion (58) extending to the exterior of the envelope through the respective aperture. The tilt sensor may further include a sealing material disposed in each aperture of the providing a substantial fluid-tight seal about the respective electrode.
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公开(公告)号：EP0622621B1
公开(公告)日：1998-07-15
申请号：EP94301848.1
申请日：1994-03-15
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公开(公告)号：EP0622621A2
公开(公告)日：1994-11-02
申请号：EP94301848.1
申请日：1994-03-15
摘要： A cold cathode ionization gauge includes a first electrode (12) and a second electrode (20) which are spaced apart and insulated from one another and have a common axis. A magnetic field generator surrounds the gauge and applies a magnetic field along the common axis of the electrodes. The magnetic field generator includes at least one pair of opposed axially magnetized magnets (32, 34) adjacent to each other. The magnet arrangement minimizes magnetic flux outside the gauge while increasing the strength of the magnetic flux inside the gauge. The magnetic arrangement also allows the gauge to be ignited in a very high vacuum, thereby extending the operating range of the gauge.
摘要翻译： 冷阴极电离计包括第一电极（12）和第二电极（20），第一电极（12）和第二电极（20）彼此间隔开并且彼此绝缘并具有公共轴线。 磁场发生器围绕测量仪并沿着电极的公共轴施加磁场。 磁场发生器包括彼此相邻的至少一对相对的轴向磁化磁体（32,34）。 磁体布置使仪表外侧的磁通量最小化，同时增加了量规内的磁通量的强度。 磁性装置还允许在非常高的真空中点燃仪表，从而延长量规的工作范围。
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