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technical article
Related knowledge of RF admittance level gauge
2011-10-11 9:39:39

   防挂料 更可靠 更准确 适用性 比较 广的 一种 新型 物位控制技术,是电容式物位技术的升级。 RF admittance is a new type of level control technology developed from the capacitive type. It is anti-hanging material , more reliable , more accurate and widely applicable . It is an upgrade of the capacitive level technology. 就是 电学中阻抗的倒数, 导纳主要 由电阻性成分、电容性成分、感性成分综合而成 The so-called radio frequency admittance, the meaning of admittance is the inverse of impedance in electricity. Admittance is mainly composed of resistive, capacitive, and inductive components . 也就是 高频液位计无线电波谱, 因此 射频导纳可以理解为用高频无线电波测量导纳。 The radio frequency is also the radio frequency spectrum of the high-frequency level gauge , so the radio frequency admittance can be understood as the measurement of admittance with high-frequency radio waves. 仪表 工作 射频导纳液位计 的传感器与灌壁 及被测介质形成导纳值,物位变化 ,导纳值 相应 变化,电路单元将测量导纳值转换成物位信号输出,实现物位测量。 When the meter is working , the admittance value of the sensor of the radio frequency admittance level gauge , the irrigation wall and the measured medium forms an admittance value. When the level changes , the admittance value will change accordingly. The circuit unit will measure the admittance value Converted into a level signal output to achieve level measurement.

       对于 连续测量 的时候 ,射频导纳技术与传统电容技术除了上述讲过的区别以外, 增加了两个很重要的电路, 是振荡器缓冲器和交流变换斩波器驱动器 ,它们是 根据导电挂料实践中的一个很重要的发现改进而成的。 For continuous measurement , in addition to the differences described above, RF admittance technology and traditional capacitor technology have added two very important circuits, namely the oscillator buffer and the AC converter chopper driver. It is improved based on an important discovery in the practice of conductive materials. 技术 可以 解决连接电缆问题, 同时 也解决垂直安装的传感器根部挂料液位变送器问题。 This technology can solve the problem of connecting cables, and also solve the problem of the level transmitter at the root of the vertically installed sensor.