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公开(公告)号：WO1985001117A1
公开(公告)日：1985-03-14
申请号：PCT/US1984001403
申请日：1984-09-04
Applicant: ROSEMOUNT INC.
Inventor： ROSEMOUNT INC. , COURSOLLE, Thomas, P. , MURPHY, Patrick, J.
IPC: G02B05/14
CPC classification number: G02B6/266
Abstract: A sensor which provides an output signal representative of a parameter such as presure, includes a reflector (30), a lens (20) and a waveguide (11) which are relatively movable as a function of the parameter. Light from a light source (40) is transmitted by the waveguide (11) toward the reflector (30). The lens (20), which is positioned between the waveguide (11) and the reflector (30) directs the light from the waveguide (11) to the reflector (30) and focuses the reflected light proximate a receiving surface (58) of the waveguide. A sensor housing (15) supports the waveguide (11), lens (20) and reflector (30) so that a relative physical displacement between the waveguide (11), lens (20) and reflector (30) occurs which is responsive to the parameter. The light received by the waveguide (11) at its receiving surface (58) is a function of the relative physical displacement, and thus a function of the parameter. The waveguide (11) transmits the received light to a light detector (59) which produces an electrical output signal which is a function of the received light and therefore of the parameter.
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公开(公告)号：WO1995006857A1
公开(公告)日：1995-03-09
申请号：PCT/US1994009421
申请日：1994-08-18
Applicant: ROSEMOUNT, INC.
Inventor： ROSEMOUNT, INC. , ROVNER, Bruce, D. , COURSOLLE, Thomas, P.
IPC: G01F01/60
Abstract: An electromagnetic fluid flowmeter (26) includes empty pipe detection circuitry. The empty pipe detection circuitry applies a common mode asynchronous signal into a pair of electrodes (16A, 16B) in the flowmeter (26). Impedance of fluid is determined by measuring the magnitude of the asynchronous signal between an electrode (16A, 16B) and electrical ground. Impedance is used to determine an empty pipe condition.
Abstract translation: 电磁流体流量计（26）包括空管检测电路。 空管检测电路将共模异步信号施加到流量计（26）中的一对电极（16A，16B）中。 通过测量电极（16A，16B）和电气接地之间的异步信号的大小来确定流体的阻抗。 阻抗用于确定空管状态。
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公开(公告)号：EP0155292A1
公开(公告)日：1985-09-25
申请号：EP84903335.0
申请日：1984-09-04
Applicant: ROSEMOUNT INC.
Inventor： COURSOLLE, Thomas, P. , MURPHY, Patrick, J.
CPC classification number: G02B6/266
Abstract: Un détecteur fournissant un signal de sortie représentant un paramètre comme la pression comporte un réflecteur (30), une lentille (20) et un guide d'ondes (11), déplaçables entre eux en fonction du paramètre. La lumière provenant d'une source de lumière (40) est transmise par le guide d'ondes (11) en direction du réflecteur (30). La lentille (20) qui est positionnée entre le guide d'ondes (11) et le réflecteur (30) dirige la lumière du guide d'ondes (11) au réflecteur (30) et focalise la lumière réfléchie à proximité d'une surface de réception (58) du guide d'ondes. Un boîtier de détecteur (15) soutient le guide d'ondes (11), la lentille (20) et le réflecteur (30) de telle manière que se produit entre le guide d'ondes (11), la lentille (20) et le réflecteur (30) un déplacement physique relatif en fonction du paramètre. La lumière reçue par le guide d'ondes (11) à sa surface de réception (58) est fonction du déplacement physique relatif, et donc fonction du paramètre. Le guide d'ondes (11) transmet la lumière reçue à un détecteur de lumière (59) produisant un signal de sortie électrique qui est fonction de la lumière reçue, et donc du paramètre.
Abstract translation: 提供表示参数如压力的输出信号的传感器具有反射器（30），透镜（20）和波导（11），根据设定在它们之间移动。 从光源（40）的光通过波导（11）朝向所述反射器（30）发送。 其被定位在所述波导（11）和反射器（30）之间的透镜（20）从所述波导（11）到反射器（30）将光引导和聚焦在光反射的表面附近 接收（58）波导。 的传感器外壳（15）支撑所述波导（11），所述透镜（20）和反射器（30），使得所述波导（11）之间发生，所述透镜（20）和 反射器（30）根据参数进行相对物理位移。 在其接收表面（58）由所述波导（11）接收到的光被基于相对物理运动，并因此根据设置。 波导（11）所接收到的光传送到光检测器（59）产生它是接收光的功能，因此，设置的电输出信号。
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公开(公告)号：EP1285236A2
公开(公告)日：2003-02-26
申请号：EP01939256.2
申请日：2001-05-22
Applicant: ROSEMOUNT INC.
Inventor： O'DONNELL, William, E. , COURSOLLE, Thomas, P. , WEHRS, David, L.
CPC classification number: G01D3/032 , G01D3/0365 , G01F1/58 , G01F1/60 , G01F25/0007
Abstract: A magnetic flowmeter (100, 300, 400, 420) with an improved liquid conduction indication has a flowtube assembly (104; 303) with a passage (102; 302) for liquid flow and has an electromagnet (108, 310, 312) mounted outside the passage (102; 302) that provides ramped magnetic excitation (110, 202). An electrode circuit (116; 306, 324, 322, 398) couples through the passage (102; 302) and generates ramp spikes (218, 220) and a flow signal. A processor (330, 334) receiving the flow signal and generating a flow rate output (301, 364). The processor (330, 334) also receives the ramp spikes (218, 220) and generates a filtered integral of the ramp spikes as a liquid conduction or empty pipe indication.
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公开(公告)号：EP1285237B1
公开(公告)日：2006-09-13
申请号：EP01944630.1
申请日：2001-05-22
Applicant: ROSEMOUNT INC.
Inventor： COURSOLLE, Thomas, P. , WEHRS, David, L.
CPC classification number: G01D3/032 , G01D3/0365 , G01F1/58 , G01F1/60 , G01F25/0007
Abstract: A magnetic flow meter has a diagnostic circuit that indicates leakage from flowtube electrodes. The diagnostic circuit couples to the electrodes and to ground. The diagnostic circuit samples diagnostic potentials between each electrode and ground, and then generates a sum of the diagnostic potentials between a first and a second electrode that indicates the leakage. The flowtube includes an insulated tube and an electromagnet. A transmitter circuit couples to the electromagnet and electrodes, and then generates a transmitter output representing a flow rate, which can be corrected for the leakage.
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Patent Agency Ranking
公开(公告)号：EP1285237A2
公开(公告)日：2003-02-26
申请号：EP01944630.1
申请日：2001-05-22
Applicant: ROSEMOUNT INC.
Inventor： COURSOLLE, Thomas, P. , WEHRS, David, L.
CPC classification number: G01D3/032 , G01D3/0365 , G01F1/58 , G01F1/60 , G01F25/0007
Abstract: A magnetic flow meter has a diagnostic circuit that indicates leakage from flowtube electrodes. The diagnostic circuit couples to the electrodes and to ground. The diagnostic circuit samples diagnostic potentials between each electrode and ground, and then generates a sum of the diagnostic potentials between a first and a second electrode that indicates the leakage. The flowtube includes an insulated tube and an electromagnet. A transmitter circuit couples to the electromagnet and electrodes, and then generates a transmitter output representing a flow rate, which can be corrected for the leakage.
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公开(公告)号：EP1285236B1
公开(公告)日：2006-09-13
申请号：EP01939256.2
申请日：2001-05-22
Applicant: ROSEMOUNT INC.
Inventor： O'DONNELL, William, E. , COURSOLLE, Thomas, P. , WEHRS, David, L.
CPC classification number: G01D3/032 , G01D3/0365 , G01F1/58 , G01F1/60 , G01F25/0007
Abstract: A magnetic flowmeter (100, 300, 400, 420) with an improved liquid conduction indication has a flowtube assembly (104; 303) with a passage (102; 302) for liquid flow and has an electromagnet (108, 310, 312) mounted outside the passage (102; 302) that provides ramped magnetic excitation (110, 202). An electrode circuit (116; 306, 324, 322, 398) couples through the passage (102; 302) and generates ramp spikes (218, 220) and a flow signal. A processor (330, 334) receiving the flow signal and generating a flow rate output (301, 364). The processor (330, 334) also receives the ramp spikes (218, 220) and generates a filtered integral of the ramp spikes as a liquid conduction or empty pipe indication.
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公开(公告)号：EP0716731B1
公开(公告)日：2000-07-12
申请号：EP94925967.5
申请日：1994-08-18
Applicant: ROSEMOUNT INC.
Inventor： ROVNER, Bruce, D. , COURSOLLE, Thomas, P.
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公开(公告)号：EP0716731A1
公开(公告)日：1996-06-19
申请号：EP94925967.0
申请日：1994-08-18
Applicant: ROSEMOUNT INC.
Inventor： ROVNER, Bruce, D. , COURSOLLE, Thomas, P.
IPC: G01F1
Abstract: An electromagnetic fluid flowmeter (26) includes empty pipe detection circuitry. The empty pipe detection circuitry applies a common mode asynchronous signal into a pair of electrodes (16A, 16B) in the flowmeter (26). Impedance of fluid is determined by measuring the magnitude of the asynchronous signal between an electrode (16A, 16B) and electrical ground. Impedance is used to determine an empty pipe condition.
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公开(公告)号：EP0155292B1
公开(公告)日：1990-08-29
申请号：EP84903335.2
申请日：1984-09-04
Applicant: ROSEMOUNT INC.
Inventor： COURSOLLE, Thomas, P. , MURPHY, Patrick, J.
CPC classification number: G02B6/266
Abstract: A sensor which provides an output signal representative of a parameter such as presure, includes a reflector (30), a lens (20) and a waveguide (11) which are relatively movable as a function of the parameter. Light from a light source (40) is transmitted by the waveguide (11) toward the reflector (30). The lens (20), which is positioned between the waveguide (11) and the reflector (30) directs the light from the waveguide (11) to the reflector (30) and focuses the reflected light proximate a receiving surface (58) of the waveguide. A sensor housing (15) supports the waveguide (11), lens (20) and reflector (30) so that a relative physical displacement between the waveguide (11), lens (20) and reflector (30) occurs which is responsive to the parameter. The light received by the waveguide (11) at its receiving surface (58) is a function of the relative physical displacement, and thus a function of the parameter. The waveguide (11) transmits the received light to a light detector (59) which produces an electrical output signal which is a function of the received light and therefore of the parameter.
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