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定(ding)量控(kong)(kong)制(zhi)設(she)備是指在管道(dao)流(liu)量或(huo)灌裝時(shi)(shi)進(jin)行(xing)計(ji)量的基礎上(shang)增加一項累積量到(dao)達(da)一定(ding)數(shu)(shu)值(zhi)(zhi)時(shi)(shi),自動(dong)(dong)(dong)對(dui)管道(dao)進(jin)行(xing)斷流(liu)或(huo)控(kong)(kong)制(zhi)的一個過程。主要根(gen)據是流(liu)量計(ji)反饋給脈(mo)沖流(liu)量信(xin)號(hao)(hao),當流(liu)量累計(ji)流(liu)量達(da)到(dao)設(she)定(ding)的數(shu)(shu)值(zhi)(zhi)(定(ding)量值(zhi)(zhi)),儀(yi)器會(hui)給電磁閥門(men)或(huo)泵一個開關(guan)信(xin)號(hao)(hao),已達(da)到(dao)對(dui)閥門(men)、泵的啟動(dong)(dong)(dong)和關(guan)閉控(kong)(kong)制(zhi),從而(er)實現(xian)對(dui)加料(liao)的自動(dong)(dong)(dong)和手動(dong)(dong)(dong)控(kong)(kong)制(zhi)。