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電容物位計用于液體及固體料倉物位的連續(xù)測量

發(fā)布日期:2022-10-09 點(diǎn)擊率:84

  電容物位計是利用電容量的變化來測量容器內(nèi)介質(zhì)物位的測量儀表,可廣泛應(yīng)用于各行業(yè)中液體及固體料倉物位的連續(xù)測量。
  容器內(nèi)由電極和導(dǎo)電材料制造的容器壁構(gòu)成了一個電容,對于一個給定的電極,被測介質(zhì)的介電常數(shù)不變時,給電極加一個固定頻率的測量電壓,則流過電容的電流取決于電容電極間介質(zhì)的高度,并與之成比例。
  電容物位計是基于電容量的改變,來進(jìn)行物位測量的,用電容物位計測量物位的一個基本要求是:被測介質(zhì)的相對介電常數(shù)在測量過程中不應(yīng)變化。
  電容物位計適應(yīng)于容器中導(dǎo)電或非導(dǎo)電液體、固體(塊狀、粉狀、細(xì)粒狀或卵石狀)的物位測量;高溫、高壓條件下的物位測量,防塵、防掛料、防蒸汽、防冷凝。

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