超聲波液位計廠房

產品特點
多脈沖低電(dian)(dian)壓多點(dian)發射發射電(dian)(dian)路(lu)，雙平(ping)衡抑(yi)制(zhi)噪聲多點(dian)接收電(dian)(dian)路(lu)：提高(gao)儀器可靠性，解決不物位(wei)不平(ping)整測量不準確的難題，并大大加強抗(kang)干擾能力(li)，可在(zai)變電(dian)(dian)站發射塔附近穩定工作

自動功率調整、增(zeng)益控制(zhi)、溫度補償。

先進的(de)檢測(ce)技術，豐富的(de)軟(ruan)件(jian)功能適應各(ge)種復雜環境。

采用新型的(de)波形計(ji)算(suan)技術，提高儀表(biao)的(de)測量精度。

具有干擾回(hui)波的(de)抑(yi)止功能保證測量(liang)數據(ju)的(de)真實。

16位(wei)D/A轉換(huan)，提高電(dian)流輸出的精度和分(fen)辨(bian)率。

傳感器采用(yong)四氟乙(yi)烯材(cai)料，可用(yong)于各種腐蝕性(xing)場合(he)。

多種輸(shu)(shu)出(chu)形式：可編程繼電(dian)器輸(shu)(shu)出(chu)、高精(jing)度4-20mA電(dian)流輸(shu)(shu)出(chu)、Rs-485數字(zi)通(tong)信輸(shu)(shu)出(chu) 分體(ti)超聲波液(ye)位 探頭

超聲波液位計廠房

在測量中超聲(sheng)波脈(mo)沖由傳感器(qi)(qi)(qi)（換能(neng)器(qi)(qi)(qi)）發出，聲(sheng)波經液體(ti)表面反射后(hou)被同一傳感器(qi)(qi)(qi)接收或(huo)超聲(sheng)波接收器(qi)(qi)(qi)，通過壓電(dian)(dian)晶體(ti)或(huo)磁致伸縮器(qi)(qi)(qi)件轉(zhuan)換成電(dian)(dian)信號，并由聲(sheng)波的發射和接收之間的時間來計算傳感器(qi)(qi)(qi)到被測液體(ti)表面的距離(li)。

 超聲波(bo)液位計(ji)可采用(yong)(yong)二線(xian)制(zhi)(zhi)、三線(xian)制(zhi)(zhi)或(huo)四線(xian)制(zhi)(zhi)技術，二線(xian)制(zhi)(zhi)為(wei)：供(gong)(gong)(gong)電(dian)(dian)與(yu)信號輸出共(gong)用(yong)(yong)；三線(xian)制(zhi)(zhi)為(wei)：供(gong)(gong)(gong)電(dian)(dian)回(hui)路(lu)和(he)信號輸出回(hui)路(lu)獨立，當采用(yong)(yong)直流24v供(gong)(gong)(gong)電(dian)(dian)時(shi)，可使用(yong)(yong)一(yi)根3芯(xin)電(dian)(dian)纜線(xian)，供(gong)(gong)(gong)電(dian)(dian)負(fu)端(duan)和(he)信號輸出負(fu)端(duan)共(gong)用(yong)(yong)一(yi)根芯(xin)線(xian)；四線(xian)制(zhi)(zhi)為(wei)：當采用(yong)(yong)交流220v供(gong)(gong)(gong)電(dian)(dian)時(shi)，或(huo)者(zhe)當采用(yong)(yong)直流24v供(gong)(gong)(gong)電(dian)(dian)，要(yao)求(qiu)供(gong)(gong)(gong)電(dian)(dian)回(hui)路(lu)與(yu)信號輸出回(hui)路(lu)*隔離時(shi)，應使用(yong)(yong)一(yi)根4芯(xin)電(dian)(dian)纜線(xian)。直流或(huo)交流供(gong)(gong)(gong)電(dian)(dian)，具(ju)有(you)4~20mADC，高低位開關量輸出。

工作原理
超(chao)聲(sheng)(sheng)(sheng)波液(ye)(ye)位計工作原理如(ru)圖所示,超(chao)聲(sheng)(sheng)(sheng)波液(ye)(ye)位計一般采用(yong)收(shou)發合一的陶瓷超(chao)聲(sheng)(sheng)(sheng)波換能器(qi),聲(sheng)(sheng)(sheng)波的發射和(he)接(jie)收(shou)都由同一個探(tan)(tan)頭完成(cheng)。探(tan)(tan)頭向被(bei)測(ce)液(ye)(ye)面(mian)發射超(chao)聲(sheng)(sheng)(sheng)波信號,超(chao)聲(sheng)(sheng)(sheng)波由探(tan)(tan)頭經傳(chuan)播介質傳(chuan)播至被(bei)測(ce)液(ye)(ye)面(mian),在(zai)液(ye)(ye)面(mian)上形(xing)成(cheng)反(fan)射,反(fan)射波沿原路(lu)徑傳(chuan)播至探(tan)(tan)頭,被(bei)探(tan)(tan)頭接(jie)收(shou)。