70年nian代dai以yi來lai泛fan起qi鍵jian控kong低di頻pin矩ju形xing波bo激ji磁ci方fang式shi，渦wo街jie流liu量liang計ji逐zhu漸jian替ti換huan早zao期qi應ying用yong的de工gong頻pin交jiao流liu激ji磁ci方fang式shi，儀yi表biao機ji能neng有you了le很hen大da進jin步bu，得de到dao更geng為wei廣guang泛fan的de應ying用yong。

    液體中含有固相液體中含有粉狀

、顆粒或纖維等固體

，可能產生的故障有；漿液噪聲；電極表麵玷汙
；導電沉積層或絕緣沉積層籠蓋電極或襯裏；襯裏被磨損或被沉積物籠蓋，暢通流暢截麵積縮小。

    有you可ke能neng結jie晶jing的de液ye體ti，電dian磁ci流liu量liang計ji應ying慎shen用yong有you些xie易yi結jie晶jing化hua工gong物wu料liao在zai溫wen度du正zheng常chang的de情qing況kuang下xia能neng正zheng常chang丈zhang量liang，因yin為wei輸shu送song流liu體ti的de導dao管guan都dou有you良liang好hao的de伴ban熱re保bao溫wen，在zai保bao溫wen工gong作zuo時shi不bu會hui結jie晶jing，但dan是shi電dian磁ci流liu量liang傳chuan感gan器qi的de丈zhang量liang管guan難nan以yi實shi施shi伴ban熱re保bao溫wen，因yin此ci，流liu體ti流liu過guo丈zhang量liang管guan時shi易yi因yin降jiang溫wen而er引yin起qi內nei壁bi結jie上shang一yi層ceng固gu體ti。因yin為wei改gai用yong其qi他ta原yuan理li的de流liu量liang計ji丈zhang量liang也ye同tong樣yang存cun在zai結jie晶jing題ti目mu，所suo以yi在zai無wu其qi他ta更geng好hao方fang法fa的de情qing況kuang下xia，可ke選xuan用yong丈zhang量liang管guan長chang度du非fei常chang短duan的de一yi種zhong“環形”電dian磁ci流liu量liang傳chuan感gan器qi
，並bing將jiang渦wo街jie流liu量liang計ji的de上shang遊you管guan道dao伴ban熱re保bao溫wen予yu以yi強qiang化hua。汙wu水shui處chu理li流liu量liang計ji在zai管guan道dao連lian接jie方fang法fa上shang，考kao慮lv流liu量liang傳chuan感gan器qi拆chai裝zhuang利li便bian，在zai一yi旦dan結jie晶jing時shi能neng利li便bian地di拆chai下xia維wei護hu。

    dianjihejiedihuancaizhixuanzebudangyinfadetimuyincaizhiyubeicejiezhibupipeieryinfaguzhangdedianciliuliangjiyujiezhijiechudelingbujianyoudianjiyujiedihuan
，pipeishidangchunaiqinshitimuwai，zhiyaoshidianjibiaomianxiaoying。biaomianxiaoyingyingyou：化學反應
；電化學和極化現象；觸媒作用。接地環也有這些效應

，但影響程度要小一些。

    管(guan)內(nei)液(ye)體(ti)未(wei)布(bu)滿(man)因(yin)為(wei)背(bei)壓(ya)不(bu)足(zu)或(huo)流(liu)量(liang)傳(chuan)感(gan)器(qi)安(an)裝(zhuang)位(wei)置(zhi)不(bu)良(liang)，致(zhi)使(shi)其(qi)丈(zhang)量(liang)管(guan)內(nei)液(ye)體(ti)未(wei)能(neng)布(bu)滿(man)
，故(gu)障(zhang)現(xian)象(xiang)因(yin)不(bu)布(bu)滿(man)程(cheng)度(du)和(he)活(huo)動(dong)狀(zhuang)況(kuang)有(you)不(bu)同(tong)表(biao)現(xian)。若(ruo)少(shao)量(liang)氣(qi)體(ti)在(zai)水(shui)管(guan)管(guan)道(dao)中(zhong)呈(cheng)分(fen)層(ceng)流(liu)或(huo)波(bo)狀(zhuang)流(liu)，故(gu)障(zhang)現(xian)象(xiang)表(biao)現(xian)為(wei)誤(wu)差(cha)增(zeng)加(jia)，即(ji)流(liu)量(liang)丈(zhang)量(liang)值(zhi)與(yu)實(shi)際(ji)值(zhi)不(bu)符(fu)；若活動是氣泡流或塞狀流，故障現象除丈量值與實際值不符外，還會因氣相瞬間遮蓋電極表麵而泛起輸出晃動；ruoshuipingguandaofencenghuodongzhongchangtongliuchangjiemianjiqixiangbumenzengda，jiyetiweimanguanchengduzengda，yehuifanqishuchuhuangdong，ruoyetiweimanguanqingkuangjiaoyanjun，yizhiyemianzaidianjiyixia，zehuifanqishuchuchaomanduxianxiang。