孔板流量計用途NV2118K型標準環(huán)室孔板、法蘭孔板節(jié)流裝置是差壓式的流量測量裝置，它與差壓變送器配套使用。在冶金、化工、石油、電力工業(yè)系統(tǒng)連續(xù)測量介質(zhì)溫度≤400℃的液體、氣體、蒸汽流經(jīng)孔板所產(chǎn)生的壓差，由變送器將該壓差信號轉(zhuǎn)換成比例的輸出信號，再有二次儀表或計算機，對被測量流量進行記錄，指示或調(diào)節(jié)。二、作用原理和結(jié)構(gòu)1、 基本原理在管道內(nèi)部裝上孔板節(jié)流件，由于節(jié)流件的孔徑小于管
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