-
公开(公告)号：US20120268100A1
公开(公告)日：2012-10-25
申请号：US13453949
申请日：2012-04-23
IPC分类号： H01F38/32
CPC分类号： H01F38/32 , H01F27/427
摘要： Phase angle error and ratio error correction is provided in a current transformer by a bucking voltage opposite in phase to the voltage drop across the burden resistor and inherent winding resistance.
摘要翻译： 在电流互感器中通过与负载电阻和固有绕组电阻两端的电压相位相反的降压电压提供相位角误差和比率误差校正。
-
公开(公告)号：US09053852B2
公开(公告)日：2015-06-09
申请号：US13453949
申请日：2012-04-23
CPC分类号： H01F38/32 , H01F27/427
摘要： Phase angle error and ratio error correction is provided in a current transformer by a bucking voltage opposite in phase to the voltage drop across the burden resistor and inherent winding resistance.
摘要翻译： 在电流互感器中通过与负载电阻和固有绕组电阻两端的电压相位相反的降压电压提供相位角误差和比率误差校正。
-
3.发明申请公开(公告)号：US20090267617A1
公开(公告)日：2009-10-29
申请号：US12410443
申请日：2009-03-24
IPC分类号： G01R27/26
CPC分类号： G01N27/023
摘要： A salinity sensor for sensing or measuring salinity of a static or flowing fluid without contacting the fluid includes magnetic coil with a gapped core and a conduit for the fluid positioned in the gap in the core. The magnetic coil and the portion of the magnetic field produced by the coil that extends through the fluid in the gap are part of an LC or LCR circuit that can be driven to resonant frequency for a fluid of known salinity, which may include, but is not limited to, a fluid having zero salinity, as indicated by a peak output voltage on the circuit. Then, when the salinity of the fluid in the gap changes or a fluid with a different salinity is placed in the gap, the characteristics of the LC or LCR circuit, including inductance L and resonant frequency, change, and such changes can be detected and measured as an indication of the salinity of the fluid in the gap.
摘要翻译： 用于感测或测量静态或流动流体的盐度而不接触流体的盐度传感器包括具有间隙芯的磁性线圈和用于位于芯中的间隙中的流体的导管。 磁性线圈和由线圈产生的延伸穿过间隙中的流体的磁场的部分是LC或LCR电路的一部分，其可以被驱动到已知盐度的流体的共振频率，其可以包括但是是 不限于具有零盐度的流体，如电路上的峰值输出电压所示。 然后，当间隙中的流体的盐度变化或具有不同盐度的流体被放置在间隙中时，包括电感L和谐振频率的LC或LCR电路的特性发生变化，并且可以检测到这种变化， 测量为间隙中流体的盐度的指示。
-
-
搜索结果
3 条记录 (耗时 0.023 秒)
