140ACI04000
140ACI04000
(2)引壓導(dǎo)管的安裝。引壓導(dǎo)資應(yīng)按zui短距離敷設(shè).引壓導(dǎo)管內(nèi)徑的選擇與引壓導(dǎo)管長度有關(guān)。引壓導(dǎo)管的管路應(yīng)保持垂直,或者與水平線之間不小于1:10的傾斜度,必要時要加裝氣體、凝液、微粒收集器等設(shè)備.并定期排除收集物,如圖2-43所示。
①在測量液體介質(zhì)時,在引壓導(dǎo)管的管路中應(yīng)有排氣裝置,如果差壓變送器只能安裝在取樣口之上時,應(yīng)加裝如圖2-43(a)所示的儲氣罐和放空閥,這樣,即使有少量氣泡.也不會對測量精度造成影響.
②在測量氣體介質(zhì)時.如果差壓變送器只能安裝在取樣口之下.必須加裝如圖2-43(b)所示的儲液罐和排放閥,克服因滯留液對測壇精度產(chǎn)生影響.
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