公开(公告)号：WO2005106818A3

公开(公告)日：2006-02-09

申请号：PCT/US2005010413

申请日：2005-03-29

Applicant: STANDEX INT CORP ,  CHAMBERLIN EDWARD R

Inventor： CHAMBERLIN EDWARD R

IPC: G01F23/24 ,  G01F23/68 ,  G08B21/00

CPC classification number: G01F23/683 ,  G01F23/242 ,  G01F23/243

Abstract: A liquid level sensor for conductive liquids having a virtual bias ring to prevent false "full" indications. The sensor is an inexpensive conductive probe that can be installed in any tank or container used to contain a conductive liquid. The build up of residue such as conductive fluid that fails to drain on the inside of the container wall and probe pieces can cause a short between the probe and ground. This situation will result in falsely showing that the level of the liquid being measured is at least at the minimum predetermined requirement even though the actual level may be far less than that amount. The bias ring is a virtual "ring" that is provided around the insulating base of the sensing probe between the probe tip and the top inside of the tank. The probe is then given a charge (positive for negative ground systems) which interrupts the current path between the sensing tip of the probe and ground via the conducting residue. Consequently, the sensor will read correctly despite the conductive residue that may be present.

Abstract translation: 一种用于导电液体的液位传感器，其具有虚拟偏置环以防止假的“全”指示。 传感器是便宜的导电探头，可以安装在任何用于容纳导电液体的罐或容器中。 残留物的积聚，例如不能在容器壁和探针片内部排出的导电流体可能导致探针和地面之间的短路。 这种情况将导致错误地显示待测液体的水平至少达到最低预定要求，即使实际水平可能远远小于该量。 偏置环是虚拟的“环”，其设置在探针尖端和罐顶部之间的感测探针的绝缘基底周围。 然后向探头提供电荷（负接地系统的正极），其中断通过导电残渣的探头的感测尖端和接地之间的电流路径。 因此，尽管可能存在导电残留物，传感器仍将正确读取。

公开(公告)号：EP1614081A4

公开(公告)日：2006-06-07

申请号：EP03816822

申请日：2003-08-19

Applicant: STANDEX INT CORP

Inventor： CHAMBERLIN EDWARD R ,  LINSLEY PAUL

IPC: G01F23/24 ,  G01F23/60 ,  G01F23/68 ,  G08B21/00

CPC classification number: G01F23/242 ,  G01F23/243 ,  G01F23/60 ,  G01F23/683

Abstract: A liquid level sensor apparatus and a method of using thereof for determining the level of a conductive liquid held within a container, wherein the container is subject to the accumulation of residue as a consequence of the conductive liquid contained therein. The liquid level sensor includes a sensor part which has a voltage; a ground connection having an electrical polarity; a circumferential ring having a bias voltage opposite in polarity to the ground connection and a voltage corresponding to that of the sensor attached around the sensor; a float which is buoyant on the conductive liquid; and a conductive tip attached to the top of the float, the conductive tip being conductive with the sensor end when in at least one predetermined position.

Abstract translation: 一种液位传感器装置及其使用方法，用于确定容器内容纳的导电液体的液位，其中由于容纳在其中的导电液体，容器受到残留物的积聚。 液位传感器包括具有电压的传感器部件; 具有电极性的接地连接; 周边环，其具有与接地连接极性相反的偏置电压和与附接在传感器周围的传感器的电压对应的电压; 浮在导电液体上的浮子; 以及附接到浮子的顶部的导电尖端，当处于至少一个预定位置时，导电尖端与传感器端部导电。

公开(公告)号：DE3783366T2

公开(公告)日：1993-06-09

申请号：DE3783366

申请日：1987-09-25

Applicant: STANDEX INT CORP

Inventor： CHAMBERLIN EDWARD R

IPC: H01F27/29 ,  H05K3/34 ,  H01F15/10

Abstract: A miniature inductor having strips of printed circuitboard material forming contact elements for surface mounting the inductor to a printed circuitboard.

公开(公告)号：DE3783366D1

公开(公告)日：1993-02-11

申请号：DE3783366

申请日：1987-09-25

Applicant: STANDEX INT CORP

Inventor： CHAMBERLIN EDWARD R

IPC: H01F27/29 ,  H05K3/34 ,  H01F15/10

Abstract: A miniature inductor having strips of printed circuitboard material forming contact elements for surface mounting the inductor to a printed circuitboard.

公开(公告)号：CA1299258C

公开(公告)日：1992-04-21

申请号：CA545518

申请日：1987-08-27

Applicant: STANDEX INT CORP

Inventor： CHAMBERLIN EDWARD R

IPC: H01F27/29 ,  H05K3/34 ,  H01F15/10 ,  H01F27/06

Abstract: A miniature inductor formed on a core and having strips of printed circuitboard material forming contact elements for surface mounting the inductor to a printed circuitboard. The contact elements are formed from an epoxy-based board having a spacer section adhesively bonded to the core and a copper strip bonded to the other side of the spacer section. The winding on the core has ends soldered to the copper strips on the contact elements.

公开(公告)号：HK50290A

公开(公告)日：1990-07-08

申请号：HK50290

申请日：1990-06-28

Applicant: STANDEX INT CORP

Inventor： CHAMBERLIN EDWARD R

IPC: H01F17/00 ,  H01F17/04 ,  H01F21/08

Abstract: A microcoil (10) having a winding (16) on a composite core made up of a portion (11) of substantially magnetic material and a portion (12) of substantially non-magentic material. The winding is split so that a part (17) of the magnetic material core portion is exposed, and a laser is preferably used to remove material from the exposed part of the magnetic core portion preferably forming a groove (21). The inductance of the coil is measured during the removal of the magnetic material, and the inductance of the coil is trimmed to a desired value through the removal of an appropriate amount of magnetic material. The non-magnetic core portion serves as a support structure for the portions of the winding on the core even if a substantial portion of the magnetic material is removed.

公开(公告)号：DE3567312D1

公开(公告)日：1989-02-09

申请号：DE3567312

申请日：1985-06-04

Applicant: STANDEX INT CORP

Inventor： CHAMBERLIN EDWARD R

IPC: H01F17/00 ,  H01F17/04 ,  H01F21/08

Abstract: A microcoil (10) having a winding (16) on a composite core made up of a portion (11) of substantially magnetic material and a portion (12) of substantially non-magentic material. The winding is split so that a part (17) of the magnetic material core portion is exposed, and a laser is preferably used to remove material from the exposed part of the magnetic core portion preferably forming a groove (21). The inductance of the coil is measured during the removal of the magnetic material, and the inductance of the coil is trimmed to a desired value through the removal of an appropriate amount of magnetic material. The non-magnetic core portion serves as a support structure for the portions of the winding on the core even if a substantial portion of the magnetic material is removed.