公开(公告)号：US5877663A

公开(公告)日：1999-03-02

申请号：US926294

申请日：1997-09-05

申请人： Donald F. Palan ,  Jon D. Miller

发明人： Donald F. Palan ,  Jon D. Miller

IPC分类号： G01F15/10 ,  G01F23/284 ,  G01S13/88 ,  H01P1/08 ,  H01Q1/22 ,  H01Q13/02 ,  H01Q19/08 ,  G01F23/28

CPC分类号： H01Q1/225 ,  G01F15/10 ,  G01F23/284 ,  H01P1/08 ,  H01Q1/22 ,  H01Q13/02 ,  H01Q19/08 ,  G01S13/88

摘要： A process sealed waveguide is formed in a flange mounted on a tank, and is used for transmitting microwave energy from a source of microwave energy to an aperture of an antenna on the interior of the tank. The process sealed waveguide includes a mechanical barrier to prevent escape of fluid under pressure or liquid from the interior of the tank, and also serves to reduce impedance mismatch between the air, vapor, or liquid filled waveguide or antenna apertures. The flange is mated to the microwave source through an electronic housing to flange adapter that interfaces with the flange in a manner to provide a vent in case the mechanical barrier fails so pressure is released, and to provide flame quenching if flames are present. The adapter includes a second waveguide having a process sealed mechanical barrier mounted coaxially with the mechanical barrier in the waveguide in the flange.

摘要翻译： 工艺密封波导形成在安装在罐上的凸缘中，用于将微波能量从微波能量源传输到罐内部的天线孔径。 过程密封波导包括机械屏障，以防止流体在压力或液体下从罐的内部逸出，并且还用于减少空气，蒸气或液体填充的波导或天线孔之间的阻抗失配。 凸缘通过电子外壳与法兰适配器配合，法兰适配器与法兰接合，以便在机械障碍物失效的情况下提供通风口，以释放压力，并且如果存在火焰，则提供火焰淬火。 适配器包括第二波导，其具有与凸缘中的波导中的机械阻挡件同轴地安装的过程密封的机械屏障。

公开(公告)号：US5847567A

公开(公告)日：1998-12-08

申请号：US315429

申请日：1994-09-30

申请人： John A. Kielb ,  Randy J. Longsdorf ,  Grant B. Edwards ,  Donald F. Palan

发明人： John A. Kielb ,  Randy J. Longsdorf ,  Grant B. Edwards ,  Donald F. Palan

IPC分类号： G01F23/284 ,  G01R27/04 ,  G01F23/28

CPC分类号： G01F23/284

摘要： A level sensor for use in a process application measures height of a product in a tank. The level meter includes a microwave feedhorn directed into the tank, an electronics housing spaced apart from the feedhorn and a microwave waveguide extending therebetween. A microwave transducer in the housing couples to the waveguide and sends and receives microwave signals. A microprocessor in the housing identifies echoes from the microwave signals which are generated and sensed by the microwave transducer. The microprocessor determines height of the product based upon a microwave echo from the product and a microwave echo from the feedhorn. The microprocessor compensates for the effect of propagation delay through the waveguide on height measurements with the feedhorn echo and provides an output related to height of the product in the tank.

摘要翻译： 在过程应用中使用的液位传感器测量罐中产品的高度。 电平表包括引导到储罐中的微波馈电喇叭，与馈电喇叭间隔开的电子器件壳体和在其间延伸的微波波导管。 壳体中的微波换能器耦合到波导并发送和接收微波信号。 外壳中的微处理器识别由微波换能器产生和感测的微波信号的回波。 微处理器基于来自产品的微波回声和来自馈电喇叭的微波回波确定产品的高度。 微处理器补偿通过波导的传播延迟对具有反馈喇叭回波的高度测量的影响，并提供与罐中产品的高度相关的输出。

公开(公告)号：US5926080A

公开(公告)日：1999-07-20

申请号：US939199

申请日：1997-09-29

申请人： Donald F. Palan ,  Mark J. Gailloux

发明人： Donald F. Palan ,  Mark J. Gailloux

IPC分类号： G01F23/284 ,  H01P1/08 ,  G01F23/00 ,  G01R27/00

CPC分类号： G01F23/284 ,  H01P1/08

摘要： A waveguide for microwave radar level gages that includes a process sealed barrier in the waveguide that is impedance matched with bore transition sections of the waveguide at opposite ends thereof. The impedance matching results in positioning of the tapered end of the barrier offset from the ends of the bore transition sections.

摘要翻译： 一种用于微波雷达液位计的波导，其包括在波导中与波导的相对端的孔过渡部分阻抗匹配的过程密封屏障。 阻抗匹配导致屏障的锥形端与孔过渡段的端部偏移的定位。

公开(公告)号：US5851083A

公开(公告)日：1998-12-22

申请号：US726145

申请日：1996-10-04

申请人： Donald F. Palan

发明人： Donald F. Palan

IPC分类号： G01F23/284 ,  H01P1/04

CPC分类号： G01F23/284 ,  Y10T403/645

摘要： A microwave level gauge has a flange adaptor which includes a first end for coupling to a process connecting flange and a second end for coupling to an electronics housing. The adaptor has a section of reduced cross-sectional area along its length between the first and second ends, which defines a thermal transfer restriction that restricts heat transfer from the first end to the second end. A waveguide extends through the adaptor, from the first end to the second end.

摘要翻译： 微波水平仪具有法兰适配器，其包括用于联接到过程连接法兰的第一端和用于联接到电子设备外壳的第二端。 适配器具有沿其长度在第一和第二端之间减小的横截面积的部分，其限定了限制从第一端到第二端的热传递的热传递限制。 波导从第一端延伸穿过适配器到第二端。

公开(公告)号：US5710552A

公开(公告)日：1998-01-20

申请号：US472695

申请日：1995-06-06

申请人： Steven J. McCoy ,  Mark S. Schumacher ,  John A. Kielb ,  Donald F. Palan ,  Grant B. Edwards ,  Randy J. Longsdorf ,  James E. Templin

发明人： Steven J. McCoy ,  Mark S. Schumacher ,  John A. Kielb ,  Donald F. Palan ,  Grant B. Edwards ,  Randy J. Longsdorf ,  James E. Templin

IPC分类号： G01D3/08 ,  G01F23/284 ,  H02H9/00 ,  G08C19/16

CPC分类号： H02H9/008 ,  G01D3/08 ,  G01F23/284

摘要： A barrier device threadably mounts to a cabling aperture on a field mounted transmitter. The field mounted transmitter receives and transmits signals, and is wholly powered by a current loop circuit. The barrier device has a conductive housing with at least a first and a second aperture and a pair of conductors passing through the first aperture of the barrier device, for connecting to a terminal block in the transmitter. A pair of signal terminals, preferably as ring tongue lug, is mounted in the second aperture of the barrier device. The signal terminals are connectable to a handheld communicator, which is used to calibrate, monitor and test the transmitter. A barrier circuit is mounted in the housing and is electrically connected between the signal terminals and the conductors. Signals from the communicator access the terminal block through the barrier circuit, and the barrier circuit limits the power available at the signal terminals. One embodiment of the barrier device has a third aperture directly across from the first aperture. The first aperture threadably connects to the transmitter, so that cabling from the transmitter can pass through a passageway formed between the first and third apertures. Another embodiment has a stub shaped housing, with one end of stub being the first aperture, and the other end being the second aperture. The first aperture threads to the cabling aperture on the transmitter, and the barrier circuit is potted in the stub shaped housing.

摘要翻译： 屏障装置螺纹地安装在现场安装的变送器上的布线孔中。 现场安装的发射机接收和发射信号，并由电流环路电路完全供电。 阻挡装置具有至少具有第一和第二孔径的导电壳体和穿过阻挡装置的第一孔的一对导体，用于连接到发射器中的端子块。 一对信号端子，优选地为环形舌片，安装在屏障装置的第二孔中。 信号端子可连接到手持通信器，用于校准，监控和测试发射机。 屏蔽电路安装在壳体中，并且电连接在信号端子和导体之间。 来自通信器的信号通过屏障电路接入端子块，并且屏障电路限制信号端子处的可用功率。 阻挡装置的一个实施例具有直接从第一孔直接穿过的第三孔。 第一个孔螺纹地连接到发射器，使得来自发射器的布线可以穿过形成在第一和第三孔之间的通道。 另一个实施例具有短截面的壳体，短截线的一端是第一孔，另一端是第二孔。 第一个孔径到发射机上的布线孔径，屏障电路被封装在短截线形壳体中。