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雷达液位计 我有新说法
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　　雷达物位天线发射较窄的微波脉冲，经天线向下传输。微波接触到被测介质表面后被反射回来再次被天线系统接收，将信号传输给电子线路部分自动转换成物位信号（因为微波传播速度快，电磁波到达目标并经反射返回接收器这一来回所用的时间几乎是瞬间的）。

目录

　　雷达物位天线发射较窄的微波脉冲，经天线向下传输。微波接触到被测介质表面后被反射回来再次被天线系统接收，将信号传输给电子线路部分自动转换成物位信号（因为微波传播速度快，电磁波到达目标并经反射返回接收器这一来回所用的时间几乎是瞬间的）。

　　应用：耐温、耐压、轻微腐蚀的液体

　　测量范围：30米

　　过程连接：螺纹、法兰

　　介质温度：-40～250℃

　　过程压力：-0.1～4.0MPa

　　精度：±3mm

　　防护等：IP67

　　频率范围：26GHz

　　防爆等：ExiaⅡC T6 Ga/Exd ia IIC T6 Gb

　　信号输出：4...20mA/HART（两线/四线）RS485/Mod bus

　　天线尺寸小，便于安装;非接触雷达，无磨损，无污染。

　　几乎不受腐蚀、泡沫影响;几乎不受大气中水蒸气、温度和压力变化影响。

　　严重粉尘环境对高频物位计工作影响不大。

　　波长更短，对在倾斜的固体表面有更好的反射。

　　波束角小，能量集中，增强了回波能力的同时又有利于避开干扰物。

　　测量盲区更小，对于小罐测量也会取得良好的效果。

　　高信噪比，即使在波动的情况下也能获得更优的性能。

　　高频率，是测量固体和低介电常数介质。

参考资料

参考资料编辑区域


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