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公开(公告)号:WO1993002347A1
公开(公告)日:1993-02-04
申请号:PCT/NL1992000134
申请日:1992-07-22
Applicant: VAF INSTRUMENTS B.V. , BLOM, Cornelis
Inventor: VAF INSTRUMENTS B.V.
IPC: G01N11/16
CPC classification number: G01N11/16
Abstract: A viscometer provided with a transducer for the conversion of viscosity parameter of a fluid into an electrical signal. This transducer comprises a support element (22), an oscillation device (24), which at one end is firmly fastened on the support element (22) and at the other, free, end has an oscillating body (25). In addition the transducer comprises a magnetic drive coil (SZ) and a detection coil (SD) for initiating and maintaining oscillation of the oscillation device (24). The oscillating body (25) is provided with a magnet (26), the drive and detection coils being adjacent to the oscillating body.
Abstract translation: 具有用于将流体的粘度参数转换为电信号的换能器的粘度计。 该换能器包括支撑元件(22),振荡装置(24),其一端牢固地紧固在支撑元件(22)上,另一端自由端具有振动体(25)。 此外,换能器包括用于启动和保持振荡装置(24)的振荡的磁驱动线圈(SZ)和检测线圈(SD)。 振动体(25)设置有磁体(26),驱动和检测线圈与振动体相邻。
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公开(公告)号:EP0681176A1
公开(公告)日:1995-11-08
申请号:EP95201114.6
申请日:1995-04-28
Applicant: VAF Instruments B.V.
Inventor: Blom, Cornelis , van der Werf, Kornelis Oebele
IPC: G01N11/16
CPC classification number: G01N11/162
Abstract: A viscometer provided with a transducer for converting a viscosity parameter of a fluid (8) into an electrical signal. The transducer comprises a container (1), provided with a cavity for the fluid to be measured, a support element (2) firmly connected thereto and an oscillatory device (3,4), which at one end (3) is firmly attached to the support element (2) and at the other end has an oscillatory body (4). An oscillation drive coil (6) powered by alternating current and a constant magnetic field device (5,7) for generating a constant magnetic field are provided for bringing and maintaining the oscillatory body (4) in oscillation. The transducer is provided with a detection device (11) for detecting the oscillation of the oscillatory body (4). The constant magnetic field device (5,7) is arranged such that it is not able to come into contact with the fluid (8) to be measured and the constant magnetic field lines generated by said device are directed towards the oscillatory body (4). The oscillation drive coil (6) is accommodated in the oscillatory body (4) with its centre line at a small angle with respect to the constant magnetic field lines.
Abstract translation: 一种具有用于将流体(8)的粘度参数转换为电信号的换能器的粘度计。 传感器包括容器(1),其设置有用于待测量流体的空腔,牢固地连接到其上的支撑元件(2)和摆动装置(3,4),其在一端(3)牢固地附接到 支撑元件(2)和另一端具有振荡体(4)。 提供由交流电供电的振荡驱动线圈(6)和用于产生恒定磁场的恒定磁场装置(5,7),用于使振荡体(4)振荡。 换能器设置有用于检测振荡体(4)的振荡的检测装置(11)。 恒定磁场装置(5,7)被布置成不能与要测量的流体(8)接触,并且由所述装置产生的恒定磁场线指向振荡体(4) 。 振荡驱动线圈(6)以相对于恒定磁场线成小角度的方式容纳在振荡体(4)中。
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公开(公告)号:EP0269165A3
公开(公告)日:1988-07-06
申请号:EP87202171
申请日:1987-11-09
Applicant: VAF Instruments B.V.
Inventor: De Jong, Job
IPC: F04C02/344 , G01F03/06
CPC classification number: F04C2/3441 , F01C21/089 , G01F3/065
Abstract: A liquid flow meter, comprising a housing 1 with a cylindrical cavity 2 of non-circular cross section and a rotor 5 placed centrally in the cavity. The rotor is provided with one ore more pairs of radial slits 6 which are diametrically opposite each other. Each slit accommodates a radially displaceable blade 7. A rod 8 extends between the blades of a pair through a bore in the rotor. To make the design of the flow meter simpler and to improve the linearity the ends of the rod 8 only engage with the blades 7, without being connected to the blades.
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公开(公告)号:EP0269165B1
公开(公告)日:1990-11-14
申请号:EP87202171.2
申请日:1987-11-09
Applicant: VAF Instruments B.V.
Inventor: De Jong, Job
CPC classification number: F04C2/3441 , F01C21/089 , G01F3/065
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公开(公告)号:EP0269165A2
公开(公告)日:1988-06-01
申请号:EP87202171.2
申请日:1987-11-09
Applicant: VAF Instruments B.V.
Inventor: De Jong, Job
CPC classification number: F04C2/3441 , F01C21/089 , G01F3/065
Abstract: A liquid flow meter, comprising a housing 1 with a cylindrical cavity 2 of non-circular cross section and a rotor 5 placed centrally in the cavity. The rotor is provided with one ore more pairs of radial slits 6 which are diametrically opposite each other. Each slit accommodates a radially displaceable blade 7. A rod 8 extends between the blades of a pair through a bore in the rotor. To make the design of the flow meter simpler and to improve the linearity the ends of the rod 8 only engage with the blades 7, without being connected to the blades.
Abstract translation: 一种液体流量计,包括具有非圆形横截面的圆柱形空腔2的壳体1和放置在空腔中央的转子5。 转子设置有一对更多对的彼此径向相对的径向狭缝6。 每个狭缝容纳可径向移动的叶片7.杆8通过转子中的孔在一对叶片之间延伸。 为了使流量计的设计更简单并且提高线性度,杆8的端部仅与叶片7接合而不连接到叶片。
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公开(公告)号:EP0681176B1
公开(公告)日:2003-05-21
申请号:EP95201114.6
申请日:1995-04-28
Applicant: VAF Instruments B.V.
Inventor: Blom, Cornelis , van der Werf, Kornelis Oebele
IPC: G01N11/16
CPC classification number: G01N11/162
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公开(公告)号:EP0180410B1
公开(公告)日:1992-02-26
申请号:EP85307663.6
申请日:1985-10-24
Applicant: VAF Instruments
Inventor: Pitt, Gillies David , Extance, Philip , Scott, Brian James , Verrels, Michael Victor , Hancock, Nicholas
CPC classification number: G01N21/53 , G01N21/0332 , G01N21/15 , G01N21/532 , G01N2201/062 , G01N2201/126 , G01N2201/128
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公开(公告)号:EP0180410A3
公开(公告)日:1989-01-11
申请号:EP85307663.6
申请日:1985-10-24
Applicant: VAF Instruments
Inventor: Pitt, Gillies David , Extance, Philip , Scott, Brian James , Verrels, Michael Victor , Hancock, Nicholas
CPC classification number: G01N21/53 , G01N21/0332 , G01N21/15 , G01N21/532 , G01N2201/062 , G01N2201/126 , G01N2201/128
Abstract: A power station boiler condensate water monitor employs a light-scatter cell (4) for the detection of oil and/or particulates in the water. In order to determine background scatter levels, provision is made to alternatively pass clean water through the cell (FLUSH). The offset voltages obtained from the detector outputs when clean water is employed are compensated for differences in temperature between the boiler condensate water and the clean water before subtraction from the detector outputs when boiler condensate water is employed. The monitor is capable of detecting oil levels of less than 2 ppm.
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公开(公告)号:EP0180410A2
公开(公告)日:1986-05-07
申请号:EP85307663.6
申请日:1985-10-24
Applicant: VAF Instruments
Inventor: Pitt, Gillies David , Extance, Philip , Scott, Brian James , Verrels, Michael Victor , Hancock, Nicholas
CPC classification number: G01N21/53 , G01N21/0332 , G01N21/15 , G01N21/532 , G01N2201/062 , G01N2201/126 , G01N2201/128
Abstract: A power station boiler condensate water monitor employs a light-scatter cell (4) for the detection of oil and/or particulates in the water. In order to determine background scatter levels, provision is made to alternatively pass clean water through the cell (FLUSH). The offset voltages obtained from the detector outputs when clean water is employed are compensated for differences in temperature between the boiler condensate water and the clean water before subtraction from the detector outputs when boiler condensate water is employed. The monitor is capable of detecting oil levels of less than 2 ppm.
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