整機全重(zhong)式電子(zi)皮(pi)(pi)帶秤也采(cai)用4個稱重(zhong)傳感(gan)器(qi),它(ta)們(men)承受(shou)的物料重(zhong)力和皮(pi)(pi)蘑可仿公式(7-29)訓算。4個稱重(zhong)傳感(gan)器(qi)輸出的電信號在電氣線路(lu)中也是相加,其電信號總和對(dui)應被測物料的重(zhong)力和電子(zi)稱皮(pi)(pi)重(zhong)的總和。
從以上的(de)分析看出,全重(zhong)(zhong)式電子皮(pi)帶(dai)秤(cheng)(cheng)適(shi)臺大量(liang)(liang)程物料(liao)的(de)測量(liang)(liang),叩(kou){測物料(liao)重(zhong)(zhong)量(liang)(liang)與(yu)皮(pi)重(zhong)(zhong)相當或比皮(pi)重(zhong)(zhong)大,且大得越(yue)(yue)多越(yue)(yue)好:否則,它們的(de)測量(liang)(liang)精(jing)度將降低。因(yin)此,全重(zhong)(zhong)式電子秤(cheng)(cheng)皮(pi)重(zhong)(zhong)僅跟(gen)于在某(mou)些特殊(shu)場合使用。2單杠(gang)桿電子皮(pi)帶(dai)秤(cheng)(cheng)。
帶(dai)平(ping)(ping)衡重(zhong)(zhong)物(wu)的(de)杠桿(gan)式電子(zi)皮帶(dai)秤都利用平(ping)(ping)衡重(zhong)(zhong)物(wu)將(jiang)皮重(zhong)(zhong)抵(di)消,即皮帶(dai)上沒有物(wu)料時(shi),稱(cheng)重(zhong)(zhong)傳感器(qi)不(bu)受(shou)重(zhong)(zhong)力(li)(li)或僅有很小的(de)預壓力(li)(li)(或拉力(li)(li))。這樣,可僅計算物(wu)料對稱(cheng)重(zhong)(zhong)傳感器(qi)施(shi)加的(de)重(zhong)(zhong)力(li)(li)。
這種秤一般僅(jin)用一個稱(cheng)(cheng)(cheng)重(zhong)(zhong)傳感(gan)器,這時稱(cheng)(cheng)(cheng)重(zhong)(zhong)傳感(gan)器所承受的(de)(de)重(zhong)(zhong)力為(wei)Ⅳ-≯7-35)式中,W為(wei)稱(cheng)(cheng)(cheng)重(zhong)(zhong)傳感(gan)器承受的(de)(de)重(zhong)(zhong)力,單(dan)位(wei)為(wei)N;d為(wei)稱(cheng)(cheng)(cheng)重(zhong)(zhong)托(tuo)輥距(ju)(ju)支點的(de)(de)距(ju)(ju)離(li),單(dan)位(wei)為(wei)m;6為(wei)稱(cheng)(cheng)(cheng)重(zhong)(zhong)傳感(gan)器距(ju)(ju)支點的(de)(de)距(ju)(ju)離(li),單(dan)位(wei)為(wei)m; go為(wei)單(dan)位(wei)皮帶長度內(nei)物(wu)料的(de)(de)重(zhong)(zhong)力,單(dan)位(wei)為(wei)N/m;f
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