無錫電磁流量計(jì)銷售廠家江蘇中徽測控儀表供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="孔板流量計(jì)安裝前基本要求：1．孔板流量計(jì)安裝前應(yīng)仔細(xì)核對(duì)標(biāo)準(zhǔn)孔板的編號(hào)、位號(hào)、規(guī)格是否與管道情況、流量范圍等參數(shù)相符。在取壓口附近標(biāo)有“+”的一端應(yīng)與流體上游管段聯(lián)接，標(biāo)有“—”的一端應(yīng)與流體下游管段聯(lián)接。2．對(duì)于新設(shè)管路系統(tǒng)，必須先經(jīng)掃線"><meta name="keywords" content="無錫電磁流量計(jì)銷售廠家,流量計(jì)"><link rel="canonical" href="http://m.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta 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#f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>無錫電磁流量計(jì)銷售廠家,流量計(jì)</p><p><span>***更新：</span>2021-01-18 05:09:02</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="eqn2oah" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江蘇中徽測控儀表有限公司</a></p><p><span>聯(lián)系人：</span>姜經(jīng)理</p><p><span>郵箱: </span>jszhck@163.com</p><p><span>電話: </span>13770424300</p><p><span>傳真: </span>0517_86903470</p><p><span>網(wǎng)址: </span>http://www.jszhckyb.com</p><p><span>手機(jī): </span>0517-86900078</p><p><span>地址: </span>江蘇省淮安市金湖縣工業(yè)集中區(qū)A區(qū)3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="a2sxkbt" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="vgspwyp" class="box"><p><p> 孔板流量計(jì)安裝前基本要求：1．孔板流量計(jì)安裝前應(yīng)仔細(xì)核對(duì)標(biāo)準(zhǔn)孔板的編號(hào)、位號(hào)、規(guī)格是否與管道情況、流量范圍等參數(shù)相符。在取壓口附近標(biāo)有“+”的一端應(yīng)與流體上游管段聯(lián)接，標(biāo)有“—”的一端應(yīng)與流體下游管段聯(lián)接。2．對(duì)于新設(shè)管路系統(tǒng)，必須先經(jīng)掃線后再安裝標(biāo)準(zhǔn)孔板，以防管內(nèi)雜物堵塞或損傷標(biāo)準(zhǔn)孔板。3．標(biāo)準(zhǔn)孔板的中心線應(yīng)當(dāng)與管道中心線同軸?？装辶髁坑?jì)使流速增加，靜壓力低，于是在節(jié)流件前后便產(chǎn)生了壓力降，即壓差，介質(zhì)流動(dòng)的流量越大，在節(jié)流件前后產(chǎn)生的壓差就越大，所以孔板流量計(jì)可以通過測量壓差來衡量流體流量的大小，無錫電磁流量計(jì)銷售廠家，無錫電磁流量計(jì)銷售廠家，無錫電磁流量計(jì)銷售廠家。這種測量方法是以能量守衡定律和流動(dòng)連續(xù)性定律為基準(zhǔn)的。 </p> <p> <br /> </p> <p> <br /> 孔板流量計(jì)又稱為差壓式流量計(jì),廣泛應(yīng)用于氣體、蒸汽和液體的流量測量。無錫電磁流量計(jì)銷售廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫電磁流量計(jì)銷售廠家,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289158887356/6747137.png"></div><p> 售價(jià)較高同種規(guī)格的V錐流量計(jì)的價(jià)格要高于孔板流量計(jì),但低于可更換孔板流量計(jì)。由于V錐的用料多、加工工藝復(fù)雜、標(biāo)定費(fèi)用高,使得其售價(jià)較高。但是在考慮流量計(jì)時(shí),初次購買價(jià)及安裝費(fèi)用、儀表的可靠性、長期維護(hù)費(fèi)用、長久壓力損失等綜合因素的總評(píng)才是選取流量計(jì)的依據(jù),只有綜合考慮并權(quán)衡了以上這些重要因素,才能做到合理選型。如前所述,V錐流量計(jì)除了在初次購買費(fèi)用上高于孔板流量計(jì)外,其他的費(fèi)用應(yīng)該與孔板流量計(jì)持平或低于孔板流量計(jì)。尤其是在補(bǔ)償壓力損失所需要的耗能方面,V錐流量計(jì)遠(yuǎn)遠(yuǎn)優(yōu)于孔板流量計(jì)。所以從長遠(yuǎn)考慮,使用V錐流量計(jì)的綜合費(fèi)用要低于孔板流量計(jì)。使用可更換孔板的目的就是為了提高孔板的量程比。但是其價(jià)格昂貴。如果給V錐流量計(jì)配兩臺(tái)不同量程的變送器（壓力變送器、差壓變送器）,那么其量程比的擴(kuò)展要遠(yuǎn)大于可更換孔板流量計(jì),而其價(jià)格要遠(yuǎn)低于可更換孔板。3差壓較低由于V錐流量計(jì)的流出系數(shù)要大于孔板流量計(jì)的流出系數(shù),使得相同流量時(shí)孔板的差壓值要高于V錐的差壓值。孔板流量計(jì)的變送器一般都是用中差壓表,V錐流量計(jì)一般用低差壓表。 </p> <p> <br /> </p> <p> <br /> 上海熱式氣體質(zhì)量流量計(jì)銷售廠家孔板流量計(jì)又稱為差壓式流量計(jì)，是由一次檢測件(節(jié)流件)和二次裝置(差壓變送器和流量顯示儀)組成；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫電磁流量計(jì)銷售廠家,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289098819741/4521959.png"></div><p style="text-indent:25px">水平管道基本安裝方式對(duì)于水平管道，測量氣體時(shí)推薦安裝在管道上方160度范圍內(nèi)，尤其對(duì)于有大量水粉的氣體時(shí)，我們只推薦這樣安裝;測量液體時(shí)推薦安裝在管道下方160度范圍內(nèi)，尤其對(duì)于含有大量氣體的液體時(shí)，我們只推薦這樣安裝;但有一點(diǎn)要注意，對(duì)于那些極易氣化的液體，如液態(tài)的烯烴類介質(zhì)，安裝時(shí)插入方向同氣體，在管道上方。測量蒸汽時(shí)只推薦傳感器安裝在管道下方160度內(nèi)，并且要使傳感器處于整個(gè)測量裝置的比較高點(diǎn)。垂直管道基本安裝方式對(duì)于垂直管道，理論上可以在360度內(nèi)安裝。對(duì)于含有大量水分的濕氣體，推薦傳感器安裝時(shí)向上傾斜5度，對(duì)于含有大量氣體的液體，推薦傳感器安裝時(shí)向下傾斜5度，如右圖所示。對(duì)于蒸汽，推薦傳感器安裝時(shí)下傾斜5度，如右圖，且傳感器應(yīng)該處于整個(gè)測量系統(tǒng)中的比較高點(diǎn)。威力巴安裝所需直管段小直管段要求—彎管后2D安裝如圖所示。當(dāng)管道上、下游的直管段不夠長時(shí)，我們推薦在彎管后2倍管道內(nèi)徑處安裝威力巴，因在彎管后的流體剖面較復(fù)雜，需將流體系數(shù)K做適當(dāng)?shù)恼{(diào)整。調(diào)整K系數(shù)后，測量精度為±3%。</p><p> 電極襯里附著物的影響在丈量有附著沉淀物的流體時(shí)，電極表面將受污染，經(jīng)常引起零點(diǎn)變動(dòng)，故必需留意。零點(diǎn)變化和電極污染程度兩者的關(guān)系，要進(jìn)行定量分析比較難題，但可以說，電極直徑越小，所受的影響越少，在使用中，應(yīng)留意電極的清污，以防止附著。在襯里上附著沉淀物時(shí)產(chǎn)生的誤差Δε，假如附著的厚度是一樣，則可由式：Δε=1-2/[1+(Kω/Kf)+(1-Kω/Kf)×(1-2t/D)2]計(jì)算，式中Kω、Kf分別為附著物和丈量流體的電導(dǎo)率，附著物厚度為t，直徑為D。若式中，Kω和Kf相等，則無誤差，附著物的電導(dǎo)率較低時(shí)，上式也成立，但由于會(huì)增加電極的輸出阻抗，因此受到限制，如絕緣性沉淀物浸在流體中就是這種情況。相反，如附著金屬粉末等，因高電導(dǎo)率的附著層，使感應(yīng)電勢短路，使電極輸出偏低，造成負(fù)偏差。在丈量具有沉淀附著物的流體時(shí)，除了選擇如玻璃或聚四氯乙烯等難以附著沉淀的襯里外，還應(yīng)增其流速。假如在流體中平均地含有氣泡，則丈量的是包括氣泡的體積流量，并且使所測流量值不不亂，而引入誤差。綜上所述，在選用流量計(jì)特別是大口徑電磁流量計(jì)時(shí)，應(yīng)考慮今后對(duì)傳感器的電極及襯里的維護(hù)題目。如選用上海光華·愛而美特儀器有限公司的刮刀電極或可更換式電極. </p> <p> <br /> </p> <p> <br /> 電磁流量計(jì)應(yīng)用領(lǐng)域,大口徑儀表較多應(yīng)用于給排水工程；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫電磁流量計(jì)銷售廠家,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289134746609/1367639.png"></div><p> 孔板流量計(jì)特點(diǎn) </p> <p> 節(jié)流裝置結(jié)構(gòu)易于復(fù)制，簡單、牢固，性能穩(wěn)定可靠，使用期限長，價(jià)格低廉。 </p> <p> 孔板計(jì)算采用國際標(biāo)準(zhǔn)與加工; </p> <p> 應(yīng)用范圍廣，全部單相流皆可測量，部分混相流亦可應(yīng)用。 </p> <p> 標(biāo)準(zhǔn)型節(jié)流裝置無須實(shí)流校準(zhǔn)，即可投用。 </p> <p> 一體型孔板安裝更簡單，無須引壓管，可直接接差壓變送器和壓力變送器。 </p> <p> 智能型特點(diǎn); </p> <p> 采用進(jìn)口單晶硅智能差壓傳感器; </p> <p> 高精度，完善的自診斷功能; </p> <p> 智能孔板流量計(jì)其量程可自編程調(diào)整。 </p> <p> 可同時(shí)顯示累計(jì)流量、瞬時(shí)流量、壓力、溫度。 </p> <p> 具有在線、動(dòng)態(tài)全補(bǔ)償功能外，還具有自診斷、自行設(shè)定量程。 </p> <p> 配有多種通訊接口; </p> <p> 穩(wěn)定性高; </p> <p> 量程范圍寬、大于10：1; </p> <p> 智能型技術(shù)指標(biāo); </p> <p> 高精度：±0.075%; </p> <p> 高穩(wěn)定性：優(yōu)于0.1%FS/年; </p> <p> 高靜壓：40MPa; </p> <p> 連續(xù)工作5年不需調(diào)校; </p> <p> 可忽略溫度、靜壓影響; </p> <p> 抗高過壓; 固定式超聲波流量計(jì)要求長時(shí)間接連運(yùn)轉(zhuǎn)，所以要運(yùn)用220V交流電源；無錫電磁流量計(jì)銷售廠家</p><p style="text-indent:25px">測量水蒸汽流量時(shí)，應(yīng)用保溫材料一同包扎，必須時(shí)（如氣溫0℃以下）加伴熱管防止結(jié)冰。無錫電磁流量計(jì)銷售廠家</p><p> 環(huán)形孔板適用于各種流體（氣體、蒸汽、液體）介質(zhì)，它除了具有標(biāo)準(zhǔn)孔板的結(jié)構(gòu)簡單、牢固、安裝使用方便等特點(diǎn)以外，還具有以下優(yōu)點(diǎn)： </p> <p> 1、更適合測量飽和蒸汽、過熱蒸汽以及煤氣、冷卻水等臟污流體。 </p> <p> 2、更容易適應(yīng)高溫、高壓流體的流量測量。 </p> <p> 3、比圓缺孔板、偏心孔板工作更可靠，測量更精確。 </p> <p> 4、以較低的成本制成耐腐蝕型，測量腐蝕性流體的流量。 </p> <p> 5、由于本產(chǎn)品外部形狀簡單，容易制成夾套保濕型在夾套內(nèi)通蒸汽，可以防止被測流體在測量管段內(nèi)凝結(jié)或粘附；通以冷卻液，可防止易汽化的液體在流經(jīng)測流板時(shí)形成汽液兩相流。 </p> <p> 6、采用均壓環(huán)結(jié)構(gòu)，減少了測量誤差來源引至差壓變送器的是在測流板上、下游處取壓管橫截面的靜壓平均值，減弱了上游局部阻力形成的速度分布畸變對(duì)精度的影響，實(shí)際精度更接近基本精度。 </p> <p> 7、要求較低的前后直管段 </p> <p> 8、采用一體型結(jié)構(gòu)形式，減少管線敷設(shè)。 </p> <p> 9、采用帶遠(yuǎn)傳膜盒的差壓變送器，可以測量諸如煤粉、渣油等臟污液體的流量。 </p> <p> 工作原理：環(huán)形孔板節(jié)流裝置和普通的標(biāo)準(zhǔn)孔板一樣，依據(jù)的基本原理是流體連續(xù)性方程和伯努利方程。把環(huán)形孔板安裝在圓管中，當(dāng)液體流經(jīng)節(jié)流裝置時(shí)，其上、下游側(cè)之間就會(huì)產(chǎn)生壓力差。 </p> <p> 連接方式：法蘭連接和焊接連接。無錫電磁流量計(jì)銷售廠家</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2896446.html</p></div></div></div></div></div><div id="bp38s3w" class="page-right twoColRt"><div id="3ikme8r" 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