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id="a39zvxe" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="vzw23tf" class="box"><p><p> 實際上廠家對智能變送器的校準(zhǔn)也是有說明的，遼寧水暖管道壓力變送器，如ABB的變送器，對校準(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LRV.URV的數(shù)字設(shè)定來完成配置工作，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，通過一系列指令引導(dǎo)，由變送器直接感應(yīng)實際壓力并對數(shù)值進(jìn)行設(shè)置。而量程的初始、終設(shè)置直接取決于真實的壓力輸入值。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，但過程值的數(shù)字讀數(shù)顯示的數(shù)值會略有不同，這可通過微調(diào)項來進(jìn)行校準(zhǔn)。由于各部分既要單獨調(diào)校又必需要聯(lián)調(diào)，因此實際校準(zhǔn)時可按以下步驟進(jìn)行： </p> <p> 1．先做一次4-20mA微調(diào)，用以校正變送器內(nèi)部的D/A轉(zhuǎn)換器，由于其不涉及傳感部件，遼寧水暖管道壓力變送器，無需外部壓力信號源。 </p> <p> 2．再做一次全程微調(diào)，使4-20mA、數(shù)字讀數(shù)與實際施加的壓力信號相吻合，因此需要壓力信號源。 </p> <p> 3．做重定量程，通過調(diào)整使模擬輸出4-20mA與外加的壓力信號源相吻合，遼寧水暖管道壓力變送器，其作用與變送器外殼上的調(diào)零(Z)、調(diào)量程(R)開關(guān)的作用完全相同。 </p> <p> 壓力變送器是一種比較常用的測量儀器，可以將測壓元件受到的氣體、液體等物理參數(shù)轉(zhuǎn)變成標(biāo)準(zhǔn)的信號輸出，具有測量精細(xì)、性能穩(wěn)定、靈敏度高、操作簡便等優(yōu)點。壓力變送器主要使用的壓電材料有石英、磷酸二氫胺和酒石酸鉀鈉。石英，它是種天然晶體。遼寧水暖管道壓力變送器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧水暖管道壓力變送器,壓力變送器" src="https://tyunfile.71360.com/UploadFile/xalunqian/637328438938095703/4859570.png"></div><p> 帶LED顯示壓力變送器: </p> <p> 帶LED顯示表壓力傳感器、變送器采用全不銹鋼封焊結(jié)構(gòu)，具有良好的防潮能力及優(yōu)異的介質(zhì)兼容性,LED現(xiàn)場壓力顯示表,廣用于工業(yè)控制、水利、化工、醫(yī)療、電力、空調(diào)、金剛石壓機(jī)、冶金、車輛制動、樓宇供水等壓力的測量與控制。 </p> <p> 量程：0～150MPa </p> <p> 綜合精度：0.1%FS 0.2%FS 0.5%FS 1.0%FS </p> <p> 輸出：4～20mA </p> <p> 工作溫度：-10～80-150℃； </p> <p> 供電電壓：9～36 V </p> <p> 長期穩(wěn)定性：0.1%FS/年負(fù)載阻抗： </p> <p> 電流型zui大:800Ω 電壓型:50KΩ以上 </p> <p> 絕緣電阻：大于2000MΩ 100VDC </p> <p> 振動影響：對于20HZ-1KHZ的機(jī)械振動，輸出變化小于0.1%FS </p> <p> 密封等級：IP65 </p> <p> 螺紋連接：通用M20×1.5,其它螺紋可依客戶要求設(shè)計吉林煙塵治理壓力變送器廠家供應(yīng)早期的壓力變送器大多數(shù)采用電壓輸出信號，即將測量信號轉(zhuǎn)換為0～10VDC、0.5～2.5VDC等電壓輸出。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧水暖管道壓力變送器,壓力變送器" src="https://tyunfile.71360.com/UploadFile/xalunqian/637328439707236328/5737160.png"></div><p> 防爆型壓力變送器選用高精度、高穩(wěn)定性和高可靠性的擴(kuò)散硅壓力傳感元件及進(jìn)口質(zhì)量集成電路，是一種精度高、可靠、穩(wěn)定性好、使用奉命長的工業(yè)用壓力變送器，用于測量液體或氣體的壓力及各種液體的液位．并把壓力或液位轉(zhuǎn)換成標(biāo)準(zhǔn)電信號的現(xiàn)場遠(yuǎn)傳壓力及液位測量儀表。防爆壓力變送器，因其優(yōu)良的性能，可代替進(jìn)口gaodang次的壓力變送器，用于計量或測控精度要求高的場合，可具有防爆特性，耐沖擊性能好。應(yīng)用范圍：工業(yè)現(xiàn)場過程壓力控制航空航天領(lǐng)域石油化工輕工機(jī)械醫(yī)療設(shè)備航海造船行業(yè)水利水電發(fā)電廠恒壓供水其它自動化控制和檢測系統(tǒng)產(chǎn)品特點：測量范圍廣:,0-(10KPa-60MPa)零點、量程連續(xù)可調(diào)具有反向極性保護(hù)及限流保護(hù)耐沖擊性能突出高精度、高穩(wěn)定性、高可靠性IP65外殼防護(hù)等級，適于戶外安裝可具有防爆特性，適用于要求高的場合，符合計量標(biāo)準(zhǔn)要求獨特的設(shè)計使防水錘沖擊性能好使用奉命長根據(jù)特殊要求，可使之具有良好的抗結(jié)冰性能。 </p><p> 壓力變送器常用選用方法壓力變送器的輸出信號與壓力變量之間有一給定的連續(xù)函數(shù)關(guān)系（通常為線性函數(shù)）。為了保證您挑選的變送器符合現(xiàn)場的使用要求，選型時有幾點需要注意的地方： </p> <p> 1、測量壓力的類型:壓力類型首要有表壓、絕壓、差壓等；表壓是指以大氣壓力為基準(zhǔn)，小于或大于大氣壓力的壓力；絕壓是指以肯定壓力零位為基準(zhǔn)，高于肯定壓力零位的壓力；差壓是指兩個壓力之間的差值。 </p> <p> 2、準(zhǔn)確度等級:變送器的測量誤差錯按精度等級來劃分，實際使用過程中，依據(jù)測量誤差的需求并本著適用經(jīng)濟(jì)的原則進(jìn)行挑選。 </p> <p> 3、體系的比較大過載:體系的比較大過載應(yīng)小于變送器的過載維護(hù)極限，否則會影響商品的運用壽命乃至損壞商品。2倍丈量規(guī)模的過載維護(hù)是我公司商品的規(guī)范裝備（也可依據(jù)客戶請求進(jìn)行定制）。 </p> <p> 4、測量范圍:一般按實際測量壓力為測量范圍的80%挑選。 </p> <p> <br /> 不管什么型號的差壓變送器，其正、負(fù)壓室都有排氣、排液閥或旋塞;這為我們現(xiàn)場校準(zhǔn)差壓變送器提供了方便。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧水暖管道壓力變送器,壓力變送器" src="https://tyunfile.71360.com/UploadFile/xalunqian/637328439597812500/9296063.png"></div><p> 差壓變送器超量程故障排查方法： </p> <p> 差壓變送器是有固定量程范圍的，在量程范圍內(nèi)使用，差壓變送器性能才是正常的。在現(xiàn)場使用過程中，如果出現(xiàn)超量程的現(xiàn)象。這時候要怎么對差壓變送器進(jìn)行排查呢？ </p> <p> 1、根據(jù)控制室趨勢圖進(jìn)行分析故障原因，排查是否因工藝原因造成的壓力值偏差，誤判斷為儀表問題。如果為工藝原因，趨勢指示與壓力示值程緩慢變化趨勢，或根據(jù)工況有規(guī)律變化，如果是儀表問題，一般趨勢圖不程緩慢變化，變化幅度非常劇烈。2、如處理故障為超量程，首先對其進(jìn)行斷電，而后在送電進(jìn)行觀察，如果故障顯示仍然為超量程，那么測量一下電流值是否對應(yīng)其指示壓力值。3、參照比較差壓變送器現(xiàn)場顯示壓力，與就地指示壓力表顯示的壓力值進(jìn)行比較，并確認(rèn)測量管道是否有余壓。4、對差壓變送器進(jìn)行一次到兩次機(jī)械零點調(diào)整，故障仍然顯示為超量程，那么就要考慮是否為儀表本身的故障。5、差壓變送器自身故障情況分為兩種。情況一：變送器3大模塊有故障，情況二：變送器感壓膜片變形。6、如果差壓變送器在更換模塊后故障仍為超量程，那么終情況即為差壓變送器感壓膜片變形或者損壞。不用的變送器要把引壓管放掉冷凝水，防止不用的冷凝水溫度下降造成水冷凝產(chǎn)生負(fù)壓吸力引起負(fù)壓損壞膜盒。河北無線壓力變送器推薦</p><p style="text-indent:25px">擴(kuò)散硅壓力變送器使用被測介質(zhì)廣，可測油、水及與316不銹鋼和304不銹鋼兼容的糊狀物，具有一定的防腐能力。遼寧水暖管道壓力變送器</p><p> 電容式壓力變送器分為表壓型、絕壓型和差壓型. </p> <p> 電容式壓力變送器數(shù)據(jù)設(shè)置方法： </p> <p> 當(dāng)左下角的“88”字符顯示1～7時，表明變送器處于現(xiàn)場組態(tài)模式，此時可以通過按鍵輸入密碼、修改參數(shù)、或者進(jìn)行遷移。 </p> <p> 數(shù)據(jù)設(shè)置過程中，“S”鍵用于調(diào)整數(shù)字和小數(shù)點，“Z”鍵用于移位，“M”鍵用于保存。 </p> <p> 設(shè)置過程如下： </p> <p> 1．按下S鍵進(jìn)入數(shù)據(jù)設(shè)置界面，同時符號位開始閃爍，表示可修改符號位。 </p> <p> 2．若再次按下S鍵，可以切換數(shù)據(jù)的正負(fù)（正號用上箭頭表示）。 </p> <p> 3．按下Z鍵，diyi 位數(shù)字位開始閃爍，表示可修改，此時長按或連續(xù)多次按下S鍵，設(shè)置數(shù)字在0~9之間循環(huán)。 </p> <p> 4．再次按下Z鍵，可依次設(shè)置第二位到第五位數(shù)字，設(shè)置方法與diyi 位完全相同。 </p> <p> 5．設(shè)置完第五位數(shù)字后，按下Z鍵，開始設(shè)置小數(shù)點。四個小數(shù)點同時開始閃爍，表示可以設(shè)置小數(shù)點，此時按S鍵，小數(shù)點位置循環(huán)切換。 </p> <p> 6．小數(shù)點設(shè)置完成后，按下Z鍵，左下箭頭開始閃爍，表示可以保存設(shè)置。 </p> <p> 7．按下S鍵，保存設(shè)置；按下Z鍵，符號位開始閃爍，可重新開始設(shè)置數(shù)據(jù)。 </p> <p> <br /> 遼寧水暖管道壓力變送器</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2304502.html</p></div></div></div></div></div><div id="3an85dp" class="page-right twoColRt"><div id="ujldt3e" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="eta29lx" 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) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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