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雷達液位計 我有新說法
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　　雷達物位天線發射較窄的微波脈沖，經天線向下傳輸。微波接觸到被測介質表面后被反射回來再次被天線系統接收，將信號傳輸給電子線路部分自動轉換成物位信號（因為微波傳播速度快，電磁波到達目標并經反射返回接收器這一來回所用的時間幾乎是瞬間的）。

目錄

　　雷達物位天線發射較窄的微波脈沖，經天線向下傳輸。微波接觸到被測介質表面后被反射回來再次被天線系統接收，將信號傳輸給電子線路部分自動轉換成物位信號（因為微波傳播速度快，電磁波到達目標并經反射返回接收器這一來回所用的時間幾乎是瞬間的）。

　　應用：耐溫、耐壓、輕微腐蝕的液體

　　測量范圍：30米

　　過程連接：螺紋、法蘭

　　介質溫度：-40～250℃

　　過程壓力：-0.1～4.0MPa

　　精度：±3mm

　　防護等：IP67

　　頻率范圍：26GHz

　　防爆等：ExiaⅡC T6 Ga/Exd ia IIC T6 Gb

　　信號輸出：4...20mA/HART（兩線/四線）RS485/Mod bus

　　天線尺寸小，便于安裝;非接觸雷達，無磨損，無污染。

　　幾乎不受腐蝕、泡沫影響;幾乎不受大氣中水蒸氣、溫度和壓力變化影響。

　　嚴重粉塵環境對高頻物位計工作影響不大。

　　波長更短，對在傾斜的固體表面有更好的反射。

　　波束角小，能量集中，增強了回波能力的同時又有利于避開干擾物。

　　測量盲區更小，對于小罐測量也會取得良好的效果。

　　高信噪比，即使在波動的情況下也能獲得更優的性能。

　　高頻率，是測量固體和低介電常數介質。

參考資料

參考資料編輯區域


目錄

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