A RF admittance level controller comprises a flange 6, characterized in that one side of the flange 6 center hole 5 is connected with the inner end is provided with a wiring terminal 9 through the connecting pipe, the outer wall, from the connecting pipe 5 is orderly sheathed with an insulation sleeve 10, level of protection 11, probe, 10 insulating sleeve, a fixed set of 12 of the 13, on the other side of the flange 6 center hole through the connecting pipe of the shell 5 is connected with a circuit board is arranged inside the 1 of the 4, the circuit board 1 is arranged on the order of input and output the power supply circuit, connecting 19, high frequency bridge circuit 14, 15 following circuit and a detecting amplifying circuit 16, a comparison circuit 17, an output circuit 18, 16 in the detection amplifying circuit and follow power The output and input of Road 15 between the wire and the protection level of the 11 connection, following the 15 circuit and high frequency circuit 14, the output input through a wire and probe 13 connection.
【技术实现步骤摘要】
【国外来华专利技术】
本技术涉及一种适用于石油、化工、发电、水泥、冶金等行业的液位和料位的自动检测和控制的射频导纳物位控制器。
技术介绍
据了解,目前使用的物位控制器大致是机械式的,音叉式的,电容式的和核幅射式的。其机械式的和音叉式的物位控制器存在有易磨损,使用寿命短、信号不稳等不足之处。其电容式的物位控制器存在有受现场工作环境干忧的问题。其核幅射式的物位控制器存在有对人体危害的问题。
技术实现思路
本技术的目的是为了克服上述物位控制器存在的不足和问题,提供一种具有性能安全可靠、稳定性好,使用寿命长、应用范围广、可测量粘性介质及消除传感器探头粘附物料对控制作用影响等特点的射频导纳物位控制器。本技术的目的是这样实现的,在法兰中心孔的一侧通过接管件连接有内端设有接线柱,外壁从连接管件端依次套有绝缘套、保护级、绝缘套、固定套的探头,在法兰中心孔的另一侧通过接管件连接有内设有电路板的壳件,在电路板上布有依次输出、输入连接的电源电路、高频电桥电路、跟随电路、检测放大电路、比较电路、输出电路,在检测放大电路和跟随电路的输出、输入间通过导线与保护级连接,在跟随电路和高频电桥电路的输出、输入间通过导线与 ...
【技术保护点】
【技术特征摘要】
【国外来华专利技术】