射頻導納物位計開關是(shi)電容式物位(wei)開關的換代(dai)產品，解決了物料(liao)粘附(fu)問題(ti)，相比其它同(tong)類產品具有(you)更高的系統穩定性。即使在惡劣的現場條件下，也能可靠工作，而不受掛料(liao)、溫(wen)度(du)(du)、壓力、材料(liao)密度(du)(du)、濕(shi)度(du)(du)、甚至物料(liao)化(hua)學特性變化(hua)的影響(xiang)。

測量原理：

射頻導納物位計開關儀表(biao)是一(yi)種從電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)式(shi)物(wu)位測(ce)(ce)(ce)量(liang)(liang)技術發展起來的(de)(de)，防掛(gua)料(liao)、更(geng)可靠、更(geng)準(zhun)確(que)、適用性(xing)更(geng)廣的(de)(de)物(wu)位控制(zhi)技術，射頻導(dao)(dao)(dao)(dao)納(na)(na)(na)中的(de)(de)導(dao)(dao)(dao)(dao)納(na)(na)(na)的(de)(de)含義(yi)為電(dian)(dian)(dian)(dian)(dian)(dian)學(xue)中阻抗的(de)(de)倒數，它由(you)電(dian)(dian)(dian)(dian)(dian)(dian)阻性(xing)成(cheng)分(fen)、電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)性(xing)成(cheng)分(fen)、電(dian)(dian)(dian)(dian)(dian)(dian)感性(xing)成(cheng)分(fen)綜合(he)而成(cheng)。而射頻即發射高頻無線(xian)電(dian)(dian)(dian)(dian)(dian)(dian)波，所以射頻導(dao)(dao)(dao)(dao)納(na)(na)(na)物(wu)位控制(zhi)技術是通過(guo)用高頻無線(xian)電(dian)(dian)(dian)(dian)(dian)(dian)波測(ce)(ce)(ce)量(liang)(liang)被測(ce)(ce)(ce)介質(zhi)導(dao)(dao)(dao)(dao)納(na)(na)(na)來實現(xian)物(wu)位測(ce)(ce)(ce)量(liang)(liang)。射頻導(dao)(dao)(dao)(dao)納(na)(na)(na)技術與電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)式(shi)技術zui重(zhong)要的(de)(de)區別在于(yu)測(ce)(ce)(ce)量(liang)(liang)量(liang)(liang)的(de)(de)多(duo)樣(yang)化和(he)三(san)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)技術。射頻導(dao)(dao)(dao)(dao)納(na)(na)(na)測(ce)(ce)(ce)量(liang)(liang)量(liang)(liang)的(de)(de)多(duo)樣(yang)化在于(yu)不止是測(ce)(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)量(liang)(liang)，還有電(dian)(dian)(dian)(dian)(dian)(dian)阻和(he)電(dian)(dian)(dian)(dian)(dian)(dian)感量(liang)(liang)，是測(ce)(ce)(ce)量(liang)(liang)更(geng)加準(zhun)確(que)。三(san)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)技術包括電(dian)(dian)(dian)(dian)(dian)(dian)子單元和(he)傳感器，在測(ce)(ce)(ce)量(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)和(he)地極(ji)(ji)之間(jian)加入屏蔽電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)，將測(ce)(ce)(ce)量(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)保護(hu)起來，不受掛(gua)料(liao)影響。

基本參數：

供電(dian)：220VAC±50VAC50/60HZ(標準)或24VDC±5VDC(可選)

輸(shu)出：DPDT繼電器(qi)(雙刀雙擲)

輸出容量：220VAC5A

環境溫(wen)度：-40°C～70°C

響應時間：<0.5s延時：1～50s(可選)

分(fen)辨率：<0.5PF

火花防(fang)護(hu)：內置火花防(fang)護(hu)電路(lu)

江蘇日豐儀(yi)表(biao)有(you)限公司(si)是一家儀(yi)表(biao)生產及(ji)配套的專(zhuan)業(ye)(ye)廠家，公司(si)以高科技開發為，以工(gong)業(ye)(ye)自(zi)動(dong)(dong)化工(gong)程系(xi)統成套為重(zhong)點(dian)，專(zhuan)業(ye)(ye)從事適應(ying)我國工(gong)業(ye)(ye)企業(ye)(ye)的工(gong)業(ye)(ye)自(zi)動(dong)(dong)化控制系(xi)統及(ji)溫度儀(yi)表(biao)（熱電(dian)(dian)阻(zu)、熱電(dian)(dian)偶、雙金屬溫度計(ji)(ji)(ji)(ji)）、液位儀(yi)表(biao)（磁(ci)翻(fan)板液位計(ji)(ji)(ji)(ji)、雙色水位計(ji)(ji)(ji)(ji)、浮(fu)球液位計(ji)(ji)(ji)(ji)、超聲波(bo)液位計(ji)(ji)(ji)(ji)、雷達液位計(ji)(ji)(ji)(ji)）、壓力儀(yi)表(biao)（壓力表(biao)、電(dian)(dian)容式壓力變送器(qi)、擴散硅壓力變送器(qi)）、流量(liang)(liang)(liang)儀(yi)表(biao)（ 電(dian)(dian)磁(ci)流量(liang)(liang)(liang)計(ji)(ji)(ji)(ji)、渦街流量(liang)(liang)(liang)計(ji)(ji)(ji)(ji)、孔板流量(liang)(liang)(liang)計(ji)(ji)(ji)(ji)、渦輪流量(liang)(liang)(liang)計(ji)(ji)(ji)(ji)、V錐流量(liang)(liang)(liang)計(ji)(ji)(ji)(ji)、熱式氣體質量(liang)(liang)(liang)流量(liang)(liang)(liang)計(ji)(ji)(ji)(ji)、金屬管浮(fu)子流量(liang)(liang)(liang)計(ji)(ji)(ji)(ji)及(ji)威力巴(ba)流量(liang)(liang)(liang)計(ji)(ji)(ji)(ji)等)、計(ji)(ji)(ji)(ji)量(liang)(liang)(liang)檢(jian)測設備(流量(liang)(liang)(liang)積算(suan)儀(yi)、無紙記錄儀(yi)、智能(neng)手操器(qi)等)