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1. 发明授权

US4365503A Apparatus for calibrating meter prover encoder 失效
标题翻译：仪表编码器校准装置
公开(公告)号：US4365503A
公开(公告)日：1982-12-28
申请号：US136077
申请日：1980-03-28
申请人： William W. Ho , William F. Hall , Harry W. Fisher , Eugene B. Perrine
发明人： William W. Ho , William F. Hall , Harry W. Fisher , Eugene B. Perrine
IPC分类号： G01F25/00
CPC分类号： G01F25/0015 , G01F25/0053
摘要： Apparatus for calibrating a meter prover is disclosed including a chamber taking the form of a substantially perfect right circular cylinder, a piston adapted for rectilinear movement within said cylinder between a first position and a second position, means for moving the piston from its first position to its second position, and an encoder coupled to the piston for providing an output signal indicative of the movement of the piston and thus the volume of fluid displaced by that movement of the piston. The calibrating apparatus comprises an antenna electromagnetic energy to the antenna whereby electromagnetic waves are emanated into the chamber. A detector is coupled to the antenna to detect electromagnetic energy leaving the chamber and is in turn coupled to a resonant detector in the form of a cathode ray tube, whereby a minimum of the level of the electromagnetic energy may be determined. Further, a frequency detector in the form of a counter, is connected to the output of the generator to detect the frequencies of the generator output at which the minimum level occurs as observed upon the cathode ray tube corresponding to the establishment of a resonant standing wave within the chamber of the meter prover. The frequencies at which the resonant standing waves are established within the chamber, in turn determine the volumes corresponding to the first and second positions and therefore the difference in volume between the first and second positions corresponds to the displacement volume as would be drawn by the movement of the piston from its first to its second position through the fluid flow meter under test.
摘要翻译：公开了用于校准仪器证明器的设备，其包括采用基本上完美的右圆柱形的形式的腔室，适于在第一位置和第二位置之间在所述气缸内直线运动的活塞，用于将活塞从其第一位置移动到其第二位置和耦合到活塞的编码器，用于提供指示活塞运动的输出信号，并因此提供由活塞移动而移位的流体体积。校准装置包括天线电磁能到天线，由此电磁波被发射到腔室中。检测器耦合到天线以检测离开该室的电磁能量，并且依次耦合到阴极射线管形式的谐振检测器，由此可以确定电磁能量的最小值。此外，以计数器形式的频率检测器连接到发生器的输出端，以检测发生器的输出频率，其中发生最小电平的频率，如在阴极射线管上观察到的对应于建立共振驻波在仪表证明室内。谐振驻波在室内建立的频率又决定了对应于第一和第二位置的体积，因此在第一和第二位置之间的体积差对应于移动量的移动量的活塞从第一位置到第二位置通过待测流体流量计。

2. 发明授权

US4347731A Control apparatus for meter prover 失效
标题翻译：仪表校验仪控制装置
公开(公告)号：US4347731A
公开(公告)日：1982-09-07
申请号：US136513
申请日：1980-03-28
申请人： Harry W. Fisher , Eugene B. Perrine
发明人： Harry W. Fisher , Eugene B. Perrine
IPC分类号： G01F25/00
CPC分类号： G01F25/0015 , G01F25/0053
摘要： Apparatus for calibrating a flow meter under test is disclosed as including a chamber having an opening to be coupled by a conduit to the fluid meter under test, a piston to be driven by a motor in a first direction and in a second direction. A first valve is disposed within the conduit and inserted between the chamber opening and the fluid meter under test, while a second valve is associated by the conduit to the opening to permit exhaust of the fluid from the chamber. A control circuit including a microprocessor operates in a first mode to energize the motor to drive the piston in the first direction to draw fluid from the meter into the chamber while actuating the first valve to be opened and maintaining the second valve in its closed position. The control circuit operates in a second mode of operation to energize the motor to drive the piston in the second direction while actuating the first valve to its closed position and the second valve to its open position to permit exhaust of fluid therethrough from the chamber.
摘要翻译：公开了一种用于校准被测流量计的装置，包括：一个具有开口的腔室，该开口通过导管连接到待测流体计量器;活塞，由第一方向和第二方向由马达驱动。第一阀设置在管道内并且插入在腔室开口和待测流体计量器之间，而第二阀门通过管道与开口相关联，以允许流体从腔室排出。包括微处理器的控制电路以第一模式操作，以激励电动机沿第一方向驱动活塞，以将流体从仪表吸入室中，同时致动第一阀以打开并将第二阀保持在其关闭位置。控制电路工作在第二操作模式中，以使电动机通电，以在第一方向致动第一阀门到其关闭位置并使第二阀门到达其打开位置，从而使流体从腔室排出。

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