TRICOM 3503E 由于電磁流量計(jì)丈量富含懸浮固相或污臟體的時(shí)機(jī)遠(yuǎn)比別的流量外表多呈現(xiàn)內(nèi)壁附著層發(fā)作的毛病概率也就相對(duì)較高。若附著層電導(dǎo)率與液體電導(dǎo)率附近外表還能正常輸出信號(hào)僅僅改動(dòng)流轉(zhuǎn)面積構(gòu)成丈量差錯(cuò)的隱性毛??;假設(shè)高電導(dǎo)率附著層電極間電動(dòng)勢(shì)將被短路;假設(shè)絕緣性附著層電極外表被絕緣而斷開(kāi)丈量電路。后兩種景象均會(huì)使外表無(wú)法作業(yè)。
TRICOM 3503E 雷電擊
雷電擊在線(xiàn)路中感應(yīng)瞬時(shí)高電壓和浪涌電流進(jìn)入外表就會(huì)損壞外表。雷電擊損外表有3條引進(jìn)路徑:電源線(xiàn)傳感器勺變換器間的流量信號(hào)線(xiàn)和激磁線(xiàn)。可是從雷電毛病中損壞零部件的剖析致使毛病的感應(yīng)高電壓和浪涌電流大有些足從操控室電源線(xiàn)路引進(jìn)的別的兩條路徑較少。還從發(fā)作雷擊事端現(xiàn)場(chǎng)了解到不只電磁流量計(jì)呈現(xiàn)毛病,刺進(jìn)式電磁流量計(jì)出產(chǎn)廠(chǎng)家操控室中別的外表電常常一起呈現(xiàn)雷擊事端。因而運(yùn)用單位要知道設(shè)置操控室外表電源線(xiàn)防雷設(shè)備的首要性。現(xiàn)任已有若于計(jì)劃單位隊(duì)識(shí)和探究處理這一疑問(wèn)。
3、環(huán)境條件改動(dòng)
首要要素同上節(jié)調(diào)試期毛病環(huán)境方面僅僅攪擾源不在調(diào)試期呈現(xiàn)而在作業(yè)時(shí)期再介入的。例如一臺(tái)接地維護(hù)并不抱負(fù)的電磁流量計(jì)調(diào)試期因無(wú)廠(chǎng)擾源外表作業(yè)正??墒窃谧鳂I(yè)期呈現(xiàn)新攪擾源(例如丈量點(diǎn)鄰近管道或較遠(yuǎn)處施行管道電焊)攪擾外表正常作業(yè)呈現(xiàn)輸出信號(hào)大幅度動(dòng)搖。作為戰(zhàn)略新式工業(yè)的首要內(nèi)容,高端裝備制作業(yè)十二五的展開(kāi)思路是從五大方向要點(diǎn)打破,別離是航空裝備、衛(wèi)星及運(yùn)用、軌跡交通裝備、海洋工程裝備和智能制作裝備。該《計(jì)劃》提出的方針是,到2015年高端裝備的出售產(chǎn)量占裝備制作業(yè)的份額將達(dá)20%以上,估計(jì)年出售產(chǎn)量將會(huì)到達(dá)6萬(wàn)億元。
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