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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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>天津長(zhǎng)頸噴嘴流量計(jì),流量計(jì)</p><p><span>***更新：</span>2021-01-13 09:13:01</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="ycz8jov" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江蘇中徽測(cè)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="q78lnhd" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="az3zbiu" class="box"><p><p style="text-indent:25px">孔板流量計(jì)屬于差壓式流量計(jì)的一種。它具有結(jié)構(gòu)簡(jiǎn)單，維修方便，性能穩(wěn)定等特點(diǎn)，天津長(zhǎng)頸噴嘴流量計(jì)?，F(xiàn)如今孔板流量計(jì)被適用于煤炭、化工、交通、建筑、輕紡、食品、醫(yī)藥、農(nóng)業(yè)、環(huán)境保護(hù)等各個(gè)領(lǐng)域。一、工作原理充滿管道的流體流經(jīng)管道內(nèi)的節(jié)流裝置，在節(jié)流件附近造成局部收縮，流速增加，在其上，天津長(zhǎng)頸噴嘴流量計(jì)、下游兩側(cè)產(chǎn)生靜壓力差。在已知有關(guān)參數(shù)的條件下，天津長(zhǎng)頸噴嘴流量計(jì)，根據(jù)流動(dòng)連續(xù)性原理和伯努利方程可以推導(dǎo)出差壓與流量之間的關(guān)系而求得流量。其基本公式如下：c－流出系數(shù)無(wú)量綱d－工作條件下節(jié)流件的節(jié)流孔或喉部直徑D－工作條件下上游管道內(nèi)徑qm－質(zhì)量流量Kg/sqv－體積流量m3/s?－直徑比d/D無(wú)量綱流體的密度Kg/m3可膨脹性系數(shù)無(wú)量綱孔板流量計(jì)的節(jié)流裝置結(jié)構(gòu)簡(jiǎn)單，且牢固、性能穩(wěn)定可靠，使用期限長(zhǎng)；天津長(zhǎng)頸噴嘴流量計(jì)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津長(zhǎng)頸噴嘴流量計(jì),流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289042998618/4460086.png"></div><p> <p> <p> 渦街流量計(jì)工作狀態(tài)下的體積流量不受被測(cè)流體溫度、壓力、密度等熱工參數(shù)的影響，但液體或蒸汽的終測(cè)量結(jié)果應(yīng)是質(zhì)量流量，對(duì)于氣體，終測(cè)量結(jié)果應(yīng)是標(biāo)準(zhǔn)體積流量。質(zhì)量流量或標(biāo)準(zhǔn)體積流量都必須通過(guò)流體密度進(jìn)行換算，必須考慮流體工況變化引起的流體密度變化。 </p> <p> 造成流量測(cè)量誤差的因素主要有：管道流速不均造成的測(cè)量誤差；不能準(zhǔn)確確定流體工況變化時(shí)的介質(zhì)密度；將濕飽和蒸汽假設(shè)成干飽和蒸汽進(jìn)行測(cè)量。這些誤差如果不加以限制或消除，渦街流量計(jì) 的總測(cè)量誤差會(huì)很大。 </p> </p> </p> <p> <br /> 天津長(zhǎng)頸噴嘴流量計(jì)質(zhì)量流量計(jì)由于流體的容積受溫度、壓力等參數(shù)的影響，用容積流量表示流量大小時(shí)需給出介質(zhì)的參數(shù)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津長(zhǎng)頸噴嘴流量計(jì),流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289204346373/8482943.png"></div><p style="text-indent:25px">孔板流量計(jì)丈量?jī)?yōu)點(diǎn)1、規(guī)范節(jié)流件是全用的，并得到了國(guó)際規(guī)范組織的認(rèn)可，無(wú)需實(shí)流校準(zhǔn)，即可投用，在流量傳感器中也是獨(dú)一的;2、構(gòu)造易于復(fù)制，簡(jiǎn)單、結(jié)實(shí)、性能穩(wěn)定牢靠、價(jià)錢低廉;3、應(yīng)用范圍廣，包括全部單相流體(液、氣、蒸汽)、局部混相流，普通消費(fèi)過(guò)程的管徑、工作狀態(tài)(溫度、壓力)皆能夠丈量;4、檢測(cè)件和差壓顯現(xiàn)儀表可分開(kāi)不同廠家消費(fèi)，便與專業(yè)化范圍消費(fèi)?？装辶髁坑?jì)丈量缺陷1、丈量的反復(fù)性、準(zhǔn)確度在流量傳感器中屬于中等程度，由于眾多要素的影響撲朔迷離，準(zhǔn)確度難于進(jìn)步;2、范圍度窄，由于流量系數(shù)與雷諾數(shù)有關(guān),普通范圍度*3∶1～4∶1;3、有較長(zhǎng)的直管段長(zhǎng)度請(qǐng)求，普通難于滿足。特別對(duì)較大管徑，問(wèn)題愈加突出;4、壓力損失大;5、孔板以內(nèi)孔銳角線來(lái)保證精度，因而傳感器對(duì)腐蝕、磨損、結(jié)垢、臟污敏感，長(zhǎng)期運(yùn)用精度難以保證，需每年拆下強(qiáng)檢一次;6、采用法蘭銜接，易產(chǎn)生跑、冒、滴、漏問(wèn)題，增加了維護(hù)工作量。</p><p style="text-indent:25px">安裝排污減壓閥楔形流量計(jì)+雙法蘭變送器的流量檢測(cè)模式，在取壓閥門與雙法蘭連接部件之間要設(shè)置排污泄壓閥門。這個(gè)閥門非常重要，在流量計(jì)校準(zhǔn)過(guò)程中既可以保證正負(fù)雙法蘭之間的受壓一致都為大氣壓確保校準(zhǔn)可靠，更能保證維修人員的安全。若雙法蘭變送器損壞需要更換，通過(guò)排污泄壓閥門能夠判斷取壓一次閥門是否滲漏，只有在確保安全的情況下，才能拆卸雙法蘭變送器。很多工程安裝過(guò)程中，省略了排污泄壓閥門的安裝，這是不正確的，一定要進(jìn)行整改。安裝排污閥的楔形流量計(jì)維護(hù)維修工作更加方便電磁流量計(jì)的常規(guī)直管段要求是**D后5D，在有彎管、閥門的情況分別有不同的要求。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津長(zhǎng)頸噴嘴流量計(jì),流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436288983535731/8125157.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(jiǎn)單、牢固，性能穩(wěn)定可靠，使用期限長(zhǎng)，價(jià)格低廉。 </p> <p> 孔板計(jì)算采用國(guó)際標(biāo)準(zhǔn)與加工; </p> <p> 應(yīng)用范圍廣，全部單相流皆可測(cè)量，部分混相流亦可應(yīng)用。 </p> <p> 標(biāo)準(zhǔn)型節(jié)流裝置無(wú)須實(shí)流校準(zhǔn)，即可投用。 </p> <p> 一體型孔板安裝更簡(jiǎn)單，無(wú)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(guò)壓; 直接式質(zhì)量流量計(jì)利用與質(zhì)量流量直接有關(guān)的原理進(jìn)行測(cè)量；天津長(zhǎng)頸噴嘴流量計(jì)</p><p style="text-indent:25px">孔板流量計(jì)標(biāo)準(zhǔn)型節(jié)流裝置無(wú)須實(shí)流校準(zhǔn)，即可投用。天津長(zhǎng)頸噴嘴流量計(jì)</p><p style="text-indent:25px">隨著儀器儀表和計(jì)算機(jī)的完美結(jié)合，為了更好的滿足人們對(duì)精神世界的需求，體驗(yàn)多維世界給人們帶來(lái)的**，儀器儀表的虛擬化開(kāi)始發(fā)展。身臨其境接受客觀實(shí)物，給美又增添了一絲創(chuàng)意。進(jìn)一步提升我國(guó)儀器儀表技術(shù)和水平，有限責(zé)任公司（自然）企業(yè)要順應(yīng)產(chǎn)業(yè)發(fā)展潮流，在穩(wěn)固常規(guī)品種的同時(shí)，進(jìn)一步發(fā)展智能儀器儀表，提升產(chǎn)業(yè)數(shù)字化、智能化、集成化水平。伴隨移動(dòng)互聯(lián)網(wǎng)的爆發(fā)式增長(zhǎng)，如今，它已經(jīng)漸漸取代電子商務(wù)成為了整個(gè)互聯(lián)網(wǎng)產(chǎn)業(yè)增速**快的領(lǐng)域，而移動(dòng)終端的入口也隨即成為了傳統(tǒng)行業(yè)的必爭(zhēng)之**達(dá)料位計(jì)，雷達(dá)液位計(jì)，物位計(jì)，水位計(jì)行業(yè)進(jìn)軍移動(dòng)互聯(lián)網(wǎng)實(shí)現(xiàn)線上發(fā)展勢(shì)在必行。隨著中國(guó)的不斷進(jìn)步，世界上只有一個(gè)救世主——市場(chǎng)，能救企業(yè)的只有你自己——自強(qiáng)，提高貿(mào)易型重點(diǎn)競(jìng)爭(zhēng)力才是中國(guó)制造業(yè)的獨(dú)一出路。以顯微科學(xué)儀器行業(yè)的發(fā)展與變化為例，以親身的實(shí)踐為例，毛磊認(rèn)為，隨著經(jīng)濟(jì)的不斷發(fā)展，我國(guó)的環(huán)境和實(shí)力都發(fā)生了巨大變化，有了完全不同的基礎(chǔ)，這為國(guó)產(chǎn)科學(xué)儀器走向**增強(qiáng)了信心。天津長(zhǎng)頸噴嘴流量計(jì)</p></p><br /><p>文章來(lái)源地址: 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