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src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407043378526955/9620207.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="enkregm" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407043378526955/9620207.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="f9bpo9k" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>合肥壓力變送器廠商,器</p><p><span>***更新：</span>2021-01-27 04:27:06</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="yi0hhx9" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海翼爾電子科技有限公司</a></p><p><span>聯(lián)系人：</span>趙“S</p><p><span>郵箱: </span>yeertec@163.com</p><p><span>電話: </span>13361991561</p><p><span>傳真: </span>021_57155131</p><p><span>網(wǎng)址: </span>http://www.yeer-tec.com</p><p><span>手機(jī): </span>021-57488360</p><p><span>地址: </span>海灣旅游區(qū)莘奉公路4960號(hào)110室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="mjzwzbs" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="z7sijm4" class="box"><p><p style="text-indent:25px">差壓變送器選型依據(jù):⑴測(cè)量范圍、需要的精度及測(cè)量功能；⑵測(cè)量?jī)x表面對(duì)的環(huán)境，如石油化工的工業(yè)環(huán)境，有可熱（有毒）和危險(xiǎn)氣氛的存在，有較高的環(huán)境溫度等；⑶被測(cè)介質(zhì)的物理化學(xué)性質(zhì)和狀態(tài)，如強(qiáng)酸、強(qiáng)堿、粘稠、易凝固結(jié)晶和汽化等工況；⑷操作條件的變化，如介質(zhì)溫度、壓力、濃度的變化。有時(shí)還要考慮到從開車到參數(shù)達(dá)到正常生產(chǎn)時(shí)，氣相和液相濃度和密度的變化；⑸被測(cè)對(duì)象容器的結(jié)構(gòu)、形狀、尺寸、容器內(nèi)的設(shè)備附件及各種進(jìn)出口料管口都要考慮，如塔、溶液槽、反應(yīng)器、鍋爐汽包、立罐、球罐等；⑹其它要求，合肥壓力變送器廠商，如環(huán)保及衛(wèi)生等要求；⑺工程儀表選型要有統(tǒng)一的考慮，要求盡可能地減少規(guī)格品種，合肥壓力變送器廠商，合肥壓力變送器廠商，減少備品備件，以利管理。變送器遵循一個(gè)物理定律（或?qū)嶒?yàn)數(shù)學(xué)模型）將物理量的變化轉(zhuǎn)化成4-20mA等標(biāo)準(zhǔn)信號(hào)的裝置。合肥壓力變送器廠商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="合肥壓力變送器廠商,器" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407043378526955/9620207.png"></div><p style="text-indent:25px">智能差壓變送器的校準(zhǔn):用常規(guī)方法對(duì)智能變送器進(jìn)行校準(zhǔn)是不行的，因?yàn)檫@是由HART變送器結(jié)構(gòu)原理所決定了。因?yàn)橹悄茏兯推髟谳斎雺毫υ春彤a(chǎn)生的4-20mA電流信號(hào)之間，除機(jī)械、電路外，還有微處理芯片對(duì)輸入數(shù)據(jù)的運(yùn)算工作，因此調(diào)校與常規(guī)方法有所區(qū)別。實(shí)際上廠家對(duì)智能變送器的校準(zhǔn)也是有說(shuō)明的，如ABB的變送器，對(duì)校準(zhǔn)就有：“設(shè)定量程”、“重定量程”、“微調(diào)”之分。其中“設(shè)定量程”操作主要是通過(guò)LRV、URV的數(shù)字設(shè)定來(lái)完成配置工作，而“重定量程"操作則要求將變送器連接到標(biāo)準(zhǔn)壓力源上，通過(guò)一系列指令引導(dǎo)，由變送器直接感應(yīng)實(shí)際壓力并對(duì)數(shù)值進(jìn)行設(shè)置。而量程的初始、然后設(shè)置直接取決于真實(shí)的壓力輸入值。但要看到盡管變送器的模擬輸出與所用的輸入值關(guān)系正確，但過(guò)程值的數(shù)字讀數(shù)顯示的數(shù)值會(huì)略有不同，這可通過(guò)微調(diào)項(xiàng)來(lái)進(jìn)行校準(zhǔn)。合肥壓力變送器廠商電容式液位變送器由電容式傳感器與電子模塊電路組成。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="合肥壓力變送器廠商,器" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407043483165930/6577972.png"></div><p style="text-indent:25px">浮球式液位變送器由磁性浮球、測(cè)量導(dǎo)管、信號(hào)單元、電子單元、接線盒及安裝件組成。一般磁性浮球的比重小于0.5，可漂于液面之上并沿測(cè)量導(dǎo)管上下移動(dòng)。導(dǎo)管內(nèi)裝有測(cè)量元件，它可以在外磁作用下將被測(cè)液位信號(hào)轉(zhuǎn)換成正比于液位變化的電阻信號(hào)，并將電子單元轉(zhuǎn)換成4～20mA或其它標(biāo)準(zhǔn)信號(hào)輸出。該變送器為模塊電路，具有耐酸、防潮、防震、防腐蝕等優(yōu)點(diǎn)，電路內(nèi)部含有恒流反饋電路和內(nèi)保護(hù)電路，可使輸出比較大的電流不超過(guò)28mA，因而能夠可靠地保護(hù)電源并使二次儀表不被損壞。</p><p style="text-indent:25px">傳感器和變送器本是熱工儀表的概念。傳感器是把非電物理量如溫度、壓力、液位、物料、氣體特性等轉(zhuǎn)換成電信號(hào)或把物理量如壓力、液位等直接送到變送器。變送器則是把傳感器采集到的微弱的電信號(hào)放大以便轉(zhuǎn)送或啟動(dòng)控制組件，或?qū)鞲衅鬏斎氲姆请娏哭D(zhuǎn)換成電信號(hào)同時(shí)放大以便供遠(yuǎn)方測(cè)量和控制的信號(hào)源。傳感器是能夠受規(guī)定的被測(cè)量并按照一定的規(guī)律轉(zhuǎn)換成可用輸出信號(hào)的器件或裝置的總稱,通常由敏感組件和轉(zhuǎn)換組件組成。當(dāng)傳感器的輸出為規(guī)定的標(biāo)準(zhǔn)信號(hào)時(shí)，則稱為變送器。差壓變送器用于防止管道中的介質(zhì)直接進(jìn)入變送器里，感壓膜片與變送器之間靠注滿流體的毛細(xì)管連接起來(lái)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="合肥壓力變送器廠商,器" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407043508116750/3640055.png"></div><p style="text-indent:25px">壓力變送器其測(cè)量原理是：流程壓力和參考?jí)毫Ψ謩e作用于集成硅壓力敏感組件的兩端，其差壓使硅片變形（位移很小，*μm級(jí)），以使硅片上用半導(dǎo)體技術(shù)制成的全動(dòng)態(tài)惠斯登電橋在外部電流源驅(qū)動(dòng)下輸出正比于壓力的mV級(jí)電壓信號(hào)。由于硅材料的強(qiáng)性較好，所以輸出信號(hào)的線性度及變差指針均很高。工作時(shí)，壓力變送器將被測(cè)物理量轉(zhuǎn)換成mV級(jí)的電壓信號(hào)，并送往放大倍數(shù)很高而又可以互相抵消溫度漂移的差動(dòng)式放大器。放大后的信號(hào)經(jīng)電壓電流轉(zhuǎn)換變換成相應(yīng)的電流信號(hào)，再經(jīng)過(guò)非線性校正，然后產(chǎn)生與輸入壓力成線性對(duì)應(yīng)關(guān)系的標(biāo)準(zhǔn)電流電壓信號(hào)。變送器是輸出為標(biāo)準(zhǔn)信號(hào)的傳感器。氣體傳感器價(jià)位</p><p style="text-indent:25px">放大后的信號(hào)經(jīng)電壓電流轉(zhuǎn)換變換成相應(yīng)的電流信號(hào)。合肥壓力變送器廠商</p><p style="text-indent:25px">壓力變送器的主要作用把壓力信號(hào)傳到電子設(shè)備，進(jìn)而在計(jì)算機(jī)顯示壓力其原理大致是：將水壓這種壓力的力學(xué)信號(hào)轉(zhuǎn)變成電流（4-20mA）這樣的電子信號(hào)壓力和電壓或電流大小成線性關(guān)系，一般是正比關(guān)系。所以，變送器輸出的電壓或電流隨壓力增大而增大由此得出一個(gè)壓力和電壓或電流的關(guān)系式壓力變送器的被測(cè)介質(zhì)的兩種壓力通入高、低兩壓力室，低壓室壓力采用大氣壓或真空，作用在δ元（即敏感元件）的兩側(cè)隔離膜片上，通過(guò)隔離片和元件內(nèi)的填充液傳送到測(cè)量膜片兩側(cè)。壓力變送器是由測(cè)量膜片與兩側(cè)絕緣片上的電極各組成一個(gè)電容器。當(dāng)兩側(cè)壓力不一致時(shí)，致使測(cè)量膜片產(chǎn)生位移，其位移量和壓力差成正比，故兩側(cè)電容量就不等，通過(guò)振蕩和解調(diào)環(huán)節(jié)，轉(zhuǎn)換成與壓力成正比的信號(hào)。合肥壓力變送器廠商</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3028984.html</p></div></div></div></div></div><div id="v3xqaoj" class="page-right twoColRt"><div id="uisosgw" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ireca9x" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 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