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電磁流量計發展離不開技術的創新
電磁流量計由電磁流量(liang)傳(chuan)感器和(he)電磁流量(liang)轉(zhuan)換器兩 大部分組成。
電(dian)(dian)磁(ci)流量(liang)(liang)(liang)計測(ce)量(liang)(liang)(liang)原理(li)基于法拉第(di)電(dian)(dian)磁(ci)感(gan)應定律。傳 感(gan)器(qi)主要組成(cheng)部(bu)分(fen)是(shi)測(ce)量(liang)(liang)(liang)管(guan)、電(dian)(dian)極、勵(li)磁(ci)線(xian)圈、鐵芯與 磁(ci)軛、殼(ke)體。傳感(gan)器(qi)的(de)(de)測(ce)量(liang)(liang)(liang)管(guan)，是(shi)一(yi)內襯絕緣材(cai)料的(de)(de)非 導磁(ci)合金短管(guan)，其直(zhi)徑(jing)(jing)為D。兩只電(dian)(dian)極沿(yan)管(guan)徑(jing)(jing)方(fang)向穿通管(guan) 壁固定在測(ce)量(liang)(liang)(liang)管(guan)上(shang)，其電(dian)(dian)極頭與襯里內表面基本齊平(ping)(ping)。 勵(li)磁(ci)線(xian)圈由(you)雙向方(fang)波(bo)脈沖勵(li)磁(ci)時，在與測(ce)量(liang)(liang)(liang)管(guan)軸線(xian)垂直(zhi) 的(de)(de)方(fang)向上(shang)產生一(yi)磁(ci)通量(liang)(liang)(liang)密度為B的(de)(de)工作(zuo)磁(ci)場。此(ci)時，如果 具(ju)有一(yi)定電(dian)(dian)導率的(de)(de)流體以平(ping)(ping)均流速(su)V流經(jing)測(ce)量(liang)(liang)(liang)管(guan)，將切(qie)割 磁(ci)力線(xian)感(gan)應出(chu)電(dian)(dian)動(dong)勢(shi)E。電(dian)(dian)動(dong)勢(shi)E正比(bi)于磁(ci)通量(liang)(liang)(liang)密度B、測(ce) 量(liang)(liang)(liang)管(guan)內徑(jing)(jing)D與平(ping)(ping)均流速(su)V的(de)(de)乘積(ji)，即E∝BVD。電(dian)(dian)動(dong)勢(shi)E（流 量(liang)(liang)(liang)信(xin)號(hao)）由(you)電(dian)(dian)極檢出(chu)并(bing)(bing)通過電(dian)(dian)纜送(song)至轉(zhuan)換器(qi)。轉(zhuan)換器(qi)將 流量(liang)(liang)(liang)信(xin)號(hao)放大處理(li)后(hou)可顯示流量(liang)(liang)(liang)、總(zong)量(liang)(liang)(liang)，并(bing)(bing)能輸(shu)出(chu)脈沖、 模擬電(dian)(dian)流等信(xin)號(hao)。LDG型(xing)電(dian)(dian)磁(ci)流量(liang)(liang)(liang)計的(de)(de)轉(zhuan)換器(qi)具(ju)有漢字 LCD顯示的(de)(de)智(zhi)能化儀表。
電磁流量計種類包括污水(shui)型(xing)(xing)(xing)電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計、自流(liu)(liu)(liu)型(xing)(xing)(xing)電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計、防(fang)腐(fu)(fu)型(xing)(xing)(xing)電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計、潛(qian)水(shui)型(xing)(xing)(xing)電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計、高(gao)壓型(xing)(xing)(xing)電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計、小口徑電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計、貿易(yi)結(jie)算型(xing)(xing)(xing)電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計、衛生型(xing)(xing)(xing)電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計、潛(qian)水(shui)型(xing)(xing)(xing)電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計、插入式電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計、不銹鋼電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計、智能型(xing)(xing)(xing)防(fang)腐(fu)(fu)電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計、防(fang)爆型(xing)(xing)(xing)電(dian)磁(ci)流(liu)(liu)(liu)量(liang)計等(deng)。
智能(neng)(neng)(neng)化(hua)開(kai)展作為科技潮流，也深深影(ying)響著電(dian)(dian)磁流量(liang)(liang)(liang)(liang)計(ji)(ji)(ji)(ji)的(de)(de)(de)開(kai)展趨勢(shi)，智能(neng)(neng)(neng)電(dian)(dian)磁流量(liang)(liang)(liang)(liang)計(ji)(ji)(ji)(ji)也應運(yun)而生。智能(neng)(neng)(neng)電(dian)(dian)磁流量(liang)(liang)(liang)(liang)計(ji)(ji)(ji)(ji)具有(you)更多(duo)的(de)(de)(de)功(gong)用(yong)(yong)，是(shi)電(dian)(dian)磁流量(liang)(liang)(liang)(liang)計(ji)(ji)(ji)(ji)開(kai)展*的(de)(de)(de)一個重要(yao)(yao)突(tu)破。智能(neng)(neng)(neng)電(dian)(dian)磁流量(liang)(liang)(liang)(liang)計(ji)(ji)(ji)(ji)可以添(tian)(tian)加(jia)停電(dian)(dian)記載功(gong)用(yong)(yong)：隨時查詢歹(dai)意停電(dian)(dian)記載，避免流量(liang)(liang)(liang)(liang)計(ji)(ji)(ji)(ji)不(bu)計(ji)(ji)(ji)(ji)量(liang)(liang)(liang)(liang)或少計(ji)(ji)(ji)(ji)量(liang)(liang)(liang)(liang)。添(tian)(tian)加(jia)防雷擊(ji)功(gong)用(yong)(yong)：許多(duo)電(dian)(dian)磁流量(liang)(liang)(liang)(liang)計(ji)(ji)(ji)(ji)損壞的(de)(de)(de)直接原因(yin)是(shi)遭(zao)到雷擊(ji)，并且是(shi)不(bu)行修復(fu)性的(de)(de)(de)。添(tian)(tian)加(jia)電(dian)(dian)腦數據(ju)收(shou)集(ji)功(gong)用(yong)(yong)：流量(liang)(liang)(liang)(liang)計(ji)(ji)(ji)(ji)裝置(zhi)地(di)點(dian)較遠，不(bu)方(fang)便抄表，電(dian)(dian)腦收(shou)集(ji)的(de)(de)(de)流量(liang)(liang)(liang)(liang)數據(ju)5秒更新(xin)一次。添(tian)(tian)加(jia)電(dian)(dian)極自檢功(gong)用(yong)(yong)：電(dian)(dian)極是(shi)電(dian)(dian)磁流量(liang)(liang)(liang)(liang)計(ji)(ji)(ji)(ji)的(de)(de)(de)要(yao)(yao)害部件，電(dian)(dian)極的(de)(de)(de)污染影(ying)響流量(liang)(liang)(liang)(liang)測量(liang)(liang)(liang)(liang)。電(dian)(dian)路有(you)些發生熱量(liang)(liang)(liang)(liang)更低：室(shi)外現場運(yun)用(yong)(yong)中，夏天的(de)(de)(de)高溫文本身產熱致使許多(duo)電(dian)(dian)磁流量(liang)(liang)(liang)(liang)計(ji)(ji)(ji)(ji)燒壞，特別是(shi)一體型。