由(you)於(yu)磁(ci)性翻柱液位計(jì)(ji)在石油(you)化工等(deng)行(xing)業(yè)(ye)的廣(guang)泛(fan)應(yīng)(ying)用(yong)其諸(zhu)多優(yōu)點(diǎn)壹(yi)直被(bei)廣(guang)泛(fan)認(rèn)可(ke),因此(ci)現(xiàn)在關(guān)(guan)
鍵(jian)場(chǎng)合(he)將壹(yi)些三(san)暢(chang)磁(ci)性翻柱液位計(jì)(ji)和其他變送器結(jié)合(he)起(qi)來(lái)(lai)使(shi)用(yong),采(cai)用(yong)雙系(xi)統(tǒng)進(jìn)行控制,以(yi)確保(bao)設(shè)(she)
備(bei)的使(shi)用(yong)安全(quan)。下面(mian)就(jiu)壹(yi)些常(chang)規(guī)雙系(xi)統(tǒng)(tong)應(yīng)用(yong)進(jìn)行論(lun)述。電(dian)浮(fu)筒&磁(ci)翻柱雙系(xi)統(tǒng)(tong)液位計(jì)(ji)。該種雙系(xi)統(tǒng)(tong)
液(ye)位計(jì)(ji)的組合(he)構(gòu)成是采(cai)用(yong)雙腔(qiang)雙系(xi)統(tǒng)液(ye)位測(cè)(ce)量,現(xiàn)場(chǎng)(chang)液(ye)位(界位)指(zhi)示(shi)測(cè)(ce)量和浮(fu)筒遠(yuǎn)(yuan)傳變(bian)送,相
互獨(dú)(du)立(li),適(shi)合(he)用(yong)於高(gao)溫、髙(髙)壓(ya)、小量程(cheng)以(yi)及(ji)關(guān)(guan)鍵(jian)工藝液位控制和聯(lián)(lian)鎖的(de)場(chǎng)(chang)合(he)具有性價(jià)(jia)比高(gao)、測(cè)(ce)量精
度(du)高(gao)、可(ke)靠(kao)性高(gao)及(ji)使(shi)用(yong)壽命(ming)長(zhǎng)等(deng)優(yōu)點(diǎn)。該雙系統(tǒng)(tong)不(bu)適合(he)用(yong)於量程(cheng)較(jiao)大(da)的(de)工(gong)況(kuang),比如(ru)量程(cheng)大(da)於(yu)3m以(yi)
上的場(chǎng)(chang)合(he)。因?yàn)殡p(shuang)系(xi)統(tǒng)(tong)導(dǎo)致(zhi)儀表(biao)本(ben)身的重量過(guò)大(da)這樣(yang)過(guò)程(cheng)連(lian)接(jie)法蘭長(zhǎng)(chang)期(qi)受重後(hou)易損(sun)壞(huai),因(yin)此(ci)需(xu)要(yao)加(jia)
支撐(cheng)。同(tong)時(shí)(shi)浮(fu)筒變(bian)送器zu大(da)量程(cheng)能(neng)做(zuo)到(dao)根(gen)據(jù)介(jie)質(zhì)(zhi)密度(du)而定(ding)),所以(yi)超(chao)過(guò)這個(gè)(ge)極(ji)限就無(wú)法實(shí)現(xiàn)這種
雙系(xi)統(tǒng)(tong)的(de)液位測(cè)(ce)量。
導(dǎo)波雷達(dá)(da)&磁(ci)翻柱雙系(xi)統(tǒng)(tong)液位計(jì)(ji)。該種雙系(xi)統(tǒng)(tong)液(ye)位計(jì)(ji)的組合(he)構(gòu)成是采(cai)用(yong)雙腔(qiang)(也可(ke)采(cai)用(yong)復(fù)合(he)
腔(qiang))雙系(xi)統(tǒng)液(ye)位測(cè)(ce)量,現(xiàn)場(chǎng)(chang)液(ye)位指(zhi)示(shi)測(cè)(ce)量和導(dǎo)波雷達(dá)(da)液(ye)位計(jì)(ji)遠(yuǎn)傳變(bian)送相互獨(dú)(du)立(li),適(shi)合(he)於高(gao)溫、低
溫、超(chao)低溫、高(gao)壓(ya)及(ji)大(da)量程(cheng)等(deng)液(ye)位現(xiàn)場(chǎng)(chang)指(zhi)示(shi)和(he)DCS系統(tǒng)聯(lián)(lian)鎖的(de)場(chǎng)(chang)合(he)。因?yàn)閷?dǎo)(dao)波雷達(dá)(da)信(xin)號(hào)(hao)通(tong)過(guò)導(dǎo)波桿
傳播(bo)而非空(kong)氣(qi)傳送,因此(ci)輸(shu)出穩(wěn)定(ding)、精(jing)度(du)高(gao)。導(dǎo)(dao)波桿上的凝(ning)結(jié)(jie)水(shui)不(bu)會(huì)(hui)影(ying)響(xiang)測(cè)(ce)量性能(neng),測(cè)(ce)量不(bu)受介(jie)
質(zhì)(zhi)密度(du)、沸騰、波動(dòng)(dong)、湍流(liu)甚至是(shi)攪拌(ban)機(jī)(ji)葉(ye)片(pian)等(deng)狀(zhuang)態(tài)(tai)影(ying)響(xiang),測(cè)(ce)量數(shù)據(jù)與(yu)過(guò)程(cheng)溫度(du)、過(guò)程(cheng)壓(ya)力(li)、介(jie)質(zhì)(zhi)
密度(du)的變(bian)化無(wú)關(guān)(guan)可(ke)快速跟蹤(zong)液(ye)面(mian)。
磁(ci)致(zhi)伸(shen)縮(suo)&磁(ci)翻柱雙系(xi)統(tǒng)(tong)液位計(jì)(ji)。該種雙系(xi)統(tǒng)(tong)的(de)組合(he)枃(枃)成更(geng)加方(fang)便實(shí)用(yong),在測(cè)(ce)量液體硫磺(huang)方(fang)
面(mian)已(yi)經(jīng)就(jiu)這種方(fang)法有了(le)簡(jiǎn)單(dan)的(de)論述該(gai)種雙系(xi)統(tǒng)(tong)的(de)量程(cheng)可(ke)做得(de)更(geng)大(da)適(shi)用(yong)面(mian)更(geng)寬
