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class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/hanmuyibiao/637449410683768503/4589266.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="nrsd3de" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/hanmuyibiao/637449410683768503/4589266.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="o8v3w2r" 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>江西衛(wèi)生型隔膜壓力表鏈接,隔膜壓力表</p><p><span>***更新：</span>2021-01-30 07:19:54</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="p48kbxl" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">漢木（上海）儀表科技有限公司</a></p><p><span>聯(lián)系人：</span>徐華</p><p><span>郵箱: </span>532478234@qq.com</p><p><span>電話: </span>13661851014</p><p><span>傳真: </span>021_66782218</p><p><span>網(wǎng)址: </span>http://www.han-mu.com</p><p><span>手機(jī): </span>021-66782218</p><p><span>地址: </span>上海市寶山區(qū)毛家路125弄79號(hào)</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="hcy3fo9" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="w9wdfwf" class="box"><p><p> 由于壓力變送器和智能壓力的價(jià)格昂貴，很多小企業(yè)舍不得購(gòu)買，因此很多工藝生產(chǎn)設(shè)備、管道、容器等壓力的測(cè)量和控制則選用電接點(diǎn)壓力表代替來(lái)實(shí)現(xiàn)自動(dòng)化控制。電接點(diǎn)壓力表它能夠發(fā)出報(bào)警信號(hào)同時(shí)還能對(duì)壓力測(cè)量實(shí)時(shí)顯示，這也是它能夠被受青睞的原因之一。電接點(diǎn)壓力表它有防震電接點(diǎn)壓力表、防爆電接點(diǎn)壓力表、防腐電接點(diǎn)壓力表等，主要被控對(duì)象有電機(jī)設(shè)備的啟?？刂?、氣動(dòng)閥門的開(kāi)關(guān)控制等，主要被控變量有泵進(jìn)出口壓力點(diǎn)的檢測(cè)測(cè)量控制、工藝管道壓力點(diǎn)的檢測(cè)測(cè)量控制以及其它工藝上壓力點(diǎn)的檢測(cè)測(cè)量控制。泵進(jìn)出口壓力點(diǎn)電接點(diǎn)壓力表的選用，由于泵工作時(shí)振動(dòng)大，普通電接點(diǎn)壓力表很難適應(yīng)這樣的工作條件，由于長(zhǎng)期在震動(dòng)條件下對(duì)壓力測(cè)量精度會(huì)變差，因此選用防震電接點(diǎn)壓力表。防震壓力表的跟普通的電接點(diǎn)壓力表明顯的區(qū)別就是它在內(nèi)部灌入甘油或者硅油，防止泵工作時(shí)強(qiáng)震動(dòng)引起電接點(diǎn)壓力表的指針不停的跳動(dòng)，造成電接點(diǎn)壓力表發(fā)送虛假報(bào)警信號(hào)，帶來(lái)生產(chǎn)過(guò)程中不必要的麻煩和間接損失，江西衛(wèi)生型隔膜壓力表鏈接，江西衛(wèi)生型隔膜壓力表鏈接。防震電接點(diǎn)壓力表和電氣電路的實(shí)物圖如下首先說(shuō)這個(gè)防震電接點(diǎn)壓力表基本常識(shí)。***它的供電電源有兩種，江西衛(wèi)生型隔膜壓力表鏈接，有交流220V和交流380V。第二，防震電接點(diǎn)壓力表的了解。常見(jiàn)壓力表的故障有哪些。江西衛(wèi)生型隔膜壓力表鏈接</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江西衛(wèi)生型隔膜壓力表鏈接,隔膜壓力表" src="https://tyunfile.71360.com/WaterMark/UploadFile/hanmuyibiao/637449410683768503/4589266.png"></div><p> 我們常見(jiàn)的電接點(diǎn)壓力表的應(yīng)用有很多，比如增壓水罐的水壓控制；真空泵的工作壓力控制；變壓器的溫度保護(hù)控制（其用的是電接點(diǎn)壓力式溫度計(jì)）等等。既然電接點(diǎn)壓力表的應(yīng)用如此***，那么我們有必要來(lái)熟練掌握。下面我們就從以下幾個(gè)方面來(lái)詳細(xì)地介紹：1、工作原理（1）電接點(diǎn)壓力表有三個(gè)指針，一個(gè)是實(shí)際壓力讀數(shù)指針（黑色），另一個(gè)是壓力設(shè)定下限指針（綠色），***一個(gè)是壓力設(shè)定上限指（紅色）。（2）具體工作原理，我們以增壓水罐的水壓控制來(lái)講述：比如，要求水罐內(nèi)壓力（指表壓）低于，供水電機(jī)啟動(dòng)抽水；壓力高于，供水電機(jī)停止抽水。水泵電機(jī)的主回路和控制回路如下圖示:主回路大家都非常熟悉，就不多講了，這里主要講控制回路。旋轉(zhuǎn)轉(zhuǎn)換開(kāi)關(guān)，1和2接通時(shí)，為手動(dòng)控制，這里也不多講述。1和3接通時(shí)，為壓力表全自動(dòng)控制。壓力表全自動(dòng)控制的情況下，實(shí)際壓力指針接的是公共線，即3號(hào)線，也是電源線。下限指針接的是4號(hào)線。上限指針接的是5號(hào)線。剛開(kāi)始表壓為零時(shí)，實(shí)際壓力指針與下限指針接通，即3和4接通，中繼KA1吸合，接觸器KM吸合并自鎖，抽水電機(jī)運(yùn)行。隨著抽水電機(jī)的運(yùn)行，表壓逐漸上升，實(shí)際壓力指針與下限指針脫離，逐漸往大壓力值方向擺動(dòng)。江西DN16隔膜壓力表品牌壓力表行業(yè)標(biāo)準(zhǔn)是哪些。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江西衛(wèi)生型隔膜壓力表鏈接,隔膜壓力表" src="https://tyunfile.71360.com/WaterMark/UploadFile/hanmuyibiao/637449413726766507/4444352.png"></div><p> 壓力儀表的正確選用正確選用壓力儀表主要包括確定儀表的型式、量程、范圍、準(zhǔn)確度和靈敏度、外形尺寸以及是否需要遠(yuǎn)傳和具有其他功能，如指示、記錄、調(diào)節(jié)、報(bào)警等。壓力儀表選用的主要依據(jù)：1．工藝生產(chǎn)過(guò)程對(duì)測(cè)量的要求，包括量程和準(zhǔn)確度。在靜態(tài)測(cè)試（或變化緩慢）的情況下，規(guī)定被測(cè)壓力的**大值選用壓力表滿刻度值的三分之二；在脈動(dòng)（波動(dòng)）壓力的情況下，被測(cè)壓力的**大值選用壓力表滿刻度值的二分之一。常用壓力檢測(cè)儀表的準(zhǔn)確度等級(jí)有、、、0．4級(jí)、、，應(yīng)從生產(chǎn)工藝準(zhǔn)確度要求和**經(jīng)濟(jì)角度選用。儀表的**大允許誤差是壓力表的量程與準(zhǔn)確度等級(jí)百分比的乘積，如果誤差值超過(guò)工藝要求準(zhǔn)確度，則需更換準(zhǔn)確度高一級(jí)的壓力儀表。2．被測(cè)介質(zhì)的性質(zhì)，如狀態(tài)（氣體、液體）、溫度、粘度、腐蝕性、法污程度、易燃和易爆程度等。如氧氣表、乙炔表，帶有“禁油”標(biāo)志，**于特殊介質(zhì)的耐腐蝕壓力表、耐高溫壓力表、隔膜壓力表等。3．現(xiàn)場(chǎng)的環(huán)境條件，如環(huán)境溫度、腐蝕情況、振動(dòng)、潮濕程度等。如用于振動(dòng)環(huán)境條件的防震壓力表。4．適于工作人員的觀測(cè)。根據(jù)檢測(cè)儀表所處位置和照明情況選用表徑（外形尺寸）不等的儀表。壓力儀表的正確安裝進(jìn)行壓力檢測(cè)。</p><p> 在齒輪泵內(nèi)有很少量的流體損失，這使泵的運(yùn)行效率不能達(dá)到100％，因?yàn)檫@些流體被用來(lái)潤(rùn)滑軸承及齒輪兩側(cè)，而泵體也絕不可能無(wú)間隙配合，故不能使流體100％地從出口排出，所以少量的流體損失是必然的。然而齒輪泵還是可以良好地運(yùn)行，對(duì)大多數(shù)擠出物料來(lái)說(shuō)，仍可以達(dá)到93％～98％的效率泥漿泵安裝前準(zhǔn)備1）啟動(dòng)前應(yīng)仔細(xì)檢查電泵在運(yùn)輸、存放、安裝過(guò)程中有無(wú)變形或損壞，緊固件是否松動(dòng)或脫落。2）檢查電纜有無(wú)破損、斷裂等現(xiàn)象，如有損傷，需要更換以免漏電。3）檢查電源裝置是否安全可靠，額定電壓與銘牌必須相符。4）用兆歐表檢查電機(jī)定子繞組冷態(tài)對(duì)地絕緣電阻值不得小于50兆歐。5）檢查油室中的油量是否適合，機(jī)組在立式位置時(shí)油位應(yīng)與注油口平齊。6）帶冷卻水罩的潛水泵開(kāi)機(jī)時(shí)必須確保持續(xù)注入清潔冷水，并確保排水口暢通，冷卻水應(yīng)從下端一側(cè)流入，從另一側(cè)上端流出。注意事項(xiàng)水泵正常運(yùn)轉(zhuǎn)后，應(yīng)隨時(shí)觀察電源電壓、工作電流、水泵流量及水泵振動(dòng)是否正常，如發(fā)生下列情況之一，應(yīng)立即停機(jī)檢查：1）工作電流超過(guò)額定電流。2）額定揚(yáng)程***量降低20％以上或間斷出水。3）電源電壓過(guò)高或過(guò)低。衛(wèi)生型隔膜壓力表的使用場(chǎng)景。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江西衛(wèi)生型隔膜壓力表鏈接,隔膜壓力表" src="https://tyunfile.71360.com/WaterMark/UploadFile/hanmuyibiao/637449414062166967/9289784.png"></div><p> 尤其是當(dāng)輸送溫度較高的易揮發(fā)性液體時(shí)，更要注意。二、離心泵的安裝高度Hg允許吸上真空高度Hs是指泵入口處壓力p1可允許達(dá)到的**大真空度，而實(shí)際的允許吸上真空高度Hs值并不是根據(jù)式計(jì)算的值，而是由泵制造廠家實(shí)驗(yàn)測(cè)定的值，此值附于離心泵泵樣本中供用戶查用。位應(yīng)注意的是離心泵泵樣本中給出的Hs值是用清水為工作介質(zhì)，操作條件為20℃及及壓力為×105Pa時(shí)的值，當(dāng)操作條件及工作介質(zhì)不同時(shí)，需進(jìn)行換算。(1)離心泵輸送清水，但操作條件與實(shí)驗(yàn)條件不同，可依下式換算Hs1＝Hs＋(Ha－)－(Hυ－)(2)輸送其它液體當(dāng)被輸送液體及反派人物條件均與實(shí)驗(yàn)條件不同時(shí)，需進(jìn)行兩步換算：***步依上式將由泵樣本中查出的Hs1；第二步依下式將Hs1換算成H?s離心泵汽蝕余量Δh對(duì)于油泵，計(jì)算安裝高度時(shí)用汽蝕余量Δh來(lái)計(jì)算，即用汽蝕余量Δh由油泵樣本中查取，其值也用20℃清水測(cè)定。若輸送其它液體，亦需進(jìn)行校正，詳查有關(guān)書籍。從安全角度考慮，泵的實(shí)際安裝高度值應(yīng)小于計(jì)算值。又，當(dāng)計(jì)算之Hg為負(fù)值時(shí)，說(shuō)明泵的吸入口位置應(yīng)在貯槽液面之下。例2-3某離心泵從樣本上查得允許吸上真空高度Hs=。已知吸入管路的全部阻力為，當(dāng)?shù)卮髿鈮簽椤?04Pa，液體在吸入管路中的動(dòng)壓頭可忽略。寶山區(qū)壓力表的生產(chǎn)廠家。河南校準(zhǔn)隔膜壓力表廠家</p><p style="text-indent:25px">壓力表的日常維護(hù)有哪些。江西衛(wèi)生型隔膜壓力表鏈接</p><p> <br /> </p> <p> 壓力指示值誤差不均勻 </p> <p> 1）彈簧管變形失效，位移與壓力不成正比例關(guān)系，需更換彈簧管 </p> <p> 2）彈簧管自由端與扇形齒輪，輪桿傳動(dòng)比調(diào)整不當(dāng)，需要重新加以檢驗(yàn)調(diào)整 </p> <p> 3）齒輪夾板與底板結(jié)合位置不對(duì)，應(yīng)松脫結(jié)合螺絲將夾板向反時(shí)針?lè)较騻鲃?dòng) </p> <p> 4）指針位移大小，致使偏前或偏后，游絲松緊不一，可調(diào)整游絲松緊，把中心齒輪轉(zhuǎn)動(dòng)位置 </p> <p> 5. 當(dāng)所加壓力達(dá)到壓力表測(cè)量上限刻度值時(shí)，壓力表的指針仍不動(dòng)或很少移動(dòng)，說(shuō)明壓力未傳到彈簧管。應(yīng)先檢查壓力表校驗(yàn)器連接的密封墊片是否將接頭處通道堵死。若連接處沒(méi)有問(wèn)題，則證明壓力表內(nèi)部堵塞，應(yīng)予清洗 </p> <p> 6. 被檢表誤差總是增加或減少一個(gè)固定值。這種誤差的特征，被檢表隨壓力的增大，誤差成等量的增加或減少，在整個(gè)測(cè)量范圍內(nèi)，指針讀數(shù)總是與標(biāo)準(zhǔn)示值相差某一固定值。它是由于指針安裝不正確而引起的系統(tǒng)誤差，調(diào)整這種誤差很容易。只要重新起針，調(diào)整指針的安裝位置，就可以消除，如果誤差極小，微量轉(zhuǎn)動(dòng)一下，度盤也能解決 </p> <p> <br /> 江西衛(wèi)生型隔膜壓力表鏈接</p><p style="text-indent:25px">漢木（上海）儀表科技有限公司是一家儀器儀表，自動(dòng)化設(shè)備，電子電器，電線電纜，閥門水泵，機(jī)械p配件，通訊設(shè)備，計(jì)算機(jī)配件，橡膠制品，機(jī)電設(shè)備，五金交電，辦公用品，建筑裝潢材料的批發(fā)兼零售（依法須經(jīng)批準(zhǔn)的項(xiàng)目，經(jīng)相關(guān)部門批準(zhǔn)后方可開(kāi)展經(jīng)營(yíng)活動(dòng)）的公司，是一家集研發(fā)、設(shè)計(jì)、生產(chǎn)和銷售為一體的專業(yè)化公司。漢木儀表作為儀器儀表，自動(dòng)化設(shè)備，電子電器，電線電纜，閥門水泵，機(jī)械p配件，通訊設(shè)備，計(jì)算機(jī)配件，橡膠制品，機(jī)電設(shè)備，五金交電，辦公用品，建筑裝潢材料的批發(fā)兼零售（依法須經(jīng)批準(zhǔn)的項(xiàng)目，經(jīng)相關(guān)部門批準(zhǔn)后方可開(kāi)展經(jīng)營(yíng)活動(dòng)）的企業(yè)之一，為客戶提供良好的壓力表，數(shù)字式壓力表，不銹鋼耐震壓力表，溫度表熱電偶。漢木儀表始終以本分踏實(shí)的精神和必勝的信念，影響并帶動(dòng)團(tuán)隊(duì)取得成功。漢木儀表始終關(guān)注儀器儀表市場(chǎng)，以敏銳的市場(chǎng)洞察力，實(shí)現(xiàn)與客戶的成長(zhǎng)共贏。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3078781.html</p></div></div></div></div></div><div id="n9of2ka" class="page-right twoColRt"><div id="e4gso33" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="d48wdjd" class="recomPic likePro"><a 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