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E+H電容式物(wu)位計一般(ban)不(bu)受(shou)真空、壓力、溫(wen)度等環境條件的影(ying)響。安(an)裝方便、結(jie)構牢固、易維修(xiu)、價格較低(di)。可(ke)以用于(yu)液(ye)壓的測員和料位、界面的測量(liang)。

    根據被測(ce)介質(zhi)情況，電容測(ce)量電極的形式(shi)可以(yi)有很(hen)多(duo)種。為保證兩電極間(jian)的絕(jue)緣性，測(ce)址元件(jian)(jian)有不(bu)同的結構(gou)以(yi)適應(ying)不(bu)同的測(ce)縫(feng)條件(jian)(jian)。E+H電容式(shi)物位(wei)計(ji)應(ying)用中(zhong)常(chang)見故障(zhang)的處理，如果電容式(shi)物位(wei)計(ji)選(xuan)項(xiang)正確、安裝(zhuang)合理，一(yi)般很(hen)少出現故障(zhang)，因此選(xuan)型(xing)和(he)安裝(zhuang)時應(ying)注(zhu)意：

（1）介質(zhi)的介電常(chang)數應穩定（對于非導電介質(zhi)）

（2）對于軟纜型傳(chuan)感(gan)器(qi)，安裝時需考慮傳(chuan)感(gan)器(qi)周圍均衡(heng)，應遠(yuan)離爬梯等

（3）安裝時應遠(yuan)離設備出入口

（4）同(tong)軸型傳感器(qi)應防堵

E+H電(dian)容式物位(wei)計技術指標
1.工(gong)作電壓：AC 220V ±10% 50Hz
2.儀表外形尺寸：75+1（寬）×150+1（高）（m）
3.儀表外形(xing)尺寸：255（長(chang)）×80（寬）×160（高）（m）
4.消耗功率：20VA
5.檢測(ce)精度：±1%
6.測量范圍：0—30m
7.輸入控制：常(chang)開、常(chang)閉觸點，觸點容量：AC 220V 1A
8.顯示(shi)(shi)方式：a.LED數(shu)字顯示(shi)(shi)% b.光柱(zhu)模似顯示(shi)(shi)% c.上(shang)、下限位報警顯示(shi)(shi)
9.相(xiang)對濕度：≤85%
10.工作方式(shi)：連續測量
11.工作(zuo)溫(wen)度：—10℃~45℃ （特殊(shu)環境，可按用戶要求設計）
12.儀表與傳(chuan)感器的(de)傳(chuan)輸(shu)距(ju)離：小(xiao)于1Km

容(rong)(rong)式傳感器是將被測量(如尺寸、壓力等)的變化(hua)轉換成電容(rong)(rong)量變化(hua)的一種傳感器.9.4.1 工作原理及類型 由物理學可知,在忽略邊緣效應的情(qing)況下(xia),平(ping)板電容(rong)(rong)器的電容(rong)(rong)量為 (F) 式中 —真(zhen)空(kong)的介(jie)電常數, =8.854*10-12F/m; ε—極板間介(jie)質...

電(dian)(dian)(dian)容(rong)式(shi)(shi)傳感(gan)(gan)器(qi)(qi)(qi)的工(gong)作原理?_ ______ 電(dian)(dian)(dian)容(rong)式(shi)(shi)傳感(gan)(gan)器(qi)(qi)(qi)也(ye)(ye)常常被(bei)人們稱為(wei)(wei)(wei)電(dian)(dian)(dian)容(rong)式(shi)(shi)物(wu)位計(ji),電(dian)(dian)(dian)容(rong)式(shi)(shi)物(wu)位計(ji)的電(dian)(dian)(dian)容(rong)檢(jian)測元(yuan)件是根據圓筒形電(dian)(dian)(dian)容(rong)器(qi)(qi)(qi)原理進行工(gong)作的,電(dian)(dian)(dian)容(rong)器(qi)(qi)(qi)由兩(liang)個絕緣的同軸(zhou)圓柱極(ji)板內電(dian)(dian)(dian)極(ji)和外(wai)電(dian)(dian)(dian)極(ji)組(zu)成(cheng),在兩(liang)筒之(zhi)間(jian)充(chong)以(yi)介電(dian)(dian)(dian)常數為(wei)(wei)(wei)e的電(dian)(dian)(dian)解質(zhi)時(shi),兩(liang)圓筒間(jian)的電(dian)(dian)(dian)容(rong)量(liang)為(wei)(wei)(wei)C=2∏eL/lnD/d,式(shi)(shi)中L為(wei)(wei)(wei)兩(liang)筒相互(hu)重(zhong)合部分的長度;D為(wei)(wei)(wei)外(wai)筒電(dian)(dian)(dian)極(ji)的直徑(jing);d為(wei)(wei)(wei)內筒電(dian)(dian)(dian)極(ji)的直徑(jing);e為(wei)(wei)(wei)中間(jian)介質(zhi)的電(dian)(dian)(dian)介常數.在實際測量(liang)中D、d、e是基本不變的,故測得(de)C即可知道液位的高(gao)低,這也(ye)(ye)是電(dian)(dian)(dian)容(rong)式(shi)(shi)傳感(gan)(gan)器(qi)(qi)(qi)具有使用方(fang)便(bian),結構簡單(dan)和靈敏度高(gao),價格便(bian)宜等特點的原因之(zhi)一.