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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>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>天津**PH計(jì),PH計(jì)</p><p><span>***更新：</span>2020-07-03 21:19:15</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="pebikw7" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海博取環(huán)境技術(shù)有限公司</a></p><p><span>聯(lián)系人：</span>吳龐博</p><p><span>郵箱: </span>2355456207@qq.com</p><p><span>電話: </span>15900820461</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-20966896</p><p><span>地址: </span>南匯新城鎮(zhèn)海洋一路333號</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="dqif7w4" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="rlnfctl" class="box"><p><p style="text-indent:25px"> 在線PH計(jì)在保證性能的基礎(chǔ)上簡化了功能，從而具有了特別強(qiáng)的價(jià)格優(yōu)勢。清晰的顯示、簡易的操作和優(yōu)良的測試性能使其具有很高的性價(jià)比。可***應(yīng)用于火電、化工化肥、冶金、環(huán)保、制藥、生化、食品和自來水等溶液中pH值的連續(xù)監(jiān)測。特點(diǎn)：微機(jī)化：采用高性能CPU芯片、高精度AD轉(zhuǎn)換技術(shù)和SMT貼片技術(shù)，完成多參數(shù)測量、溫度補(bǔ)償、量程自動(dòng)轉(zhuǎn)換、儀表自檢，精度高，重復(fù)性好。高可靠性：沒有復(fù)雜的功能開關(guān)調(diào)節(jié)旋鈕。抗干擾能力強(qiáng)：電流輸出和報(bào)警繼電器采用光電耦合隔離技術(shù)，抗干擾能力強(qiáng)，實(shí)現(xiàn)遠(yuǎn)傳。自動(dòng)報(bào)警功能：報(bào)警信號隔離輸出，報(bào)警上、下限可任意設(shè)定，天津**PH計(jì)，報(bào)警滯后撤消。工業(yè)控制式看門狗：確保儀表不會(huì)死機(jī) 網(wǎng)絡(luò)功能：隔離的電流輸出和RS485通訊接口；電流對應(yīng)pH值的輸出上下限可任意設(shè)定，天津**PH計(jì)。標(biāo)液pH值自動(dòng)折算：預(yù)存了標(biāo)液的溫度曲線，標(biāo)定時(shí)自動(dòng)折算出標(biāo)液在設(shè)定溫度下的pH值。自動(dòng)判別錯(cuò)誤標(biāo)定：若用戶在標(biāo)定時(shí)錯(cuò)誤使用標(biāo)準(zhǔn)緩沖液，儀器將自動(dòng)提示。實(shí)驗(yàn)室使用的復(fù)合電極主要有全封閉型和非封閉型兩種，天津**PH計(jì)，全封閉型比較少，主要是以國外企業(yè)生產(chǎn)為主。天津**PH計(jì)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津**PH計(jì),PH計(jì)" src="http://tyunfile.71360.com/UploadFile/boqu123/637190816659296875/8801237.jpg"></div><p> pH值的測量pH試紙或指示劑會(huì)隨著pH值的變化而改變顏色，可用于粗略地指示pH值。這些指示劑在準(zhǔn)確度上存在一定限制，難以通過顏色或模糊的樣本正確指示pH值?！皃H”一詞**什么意思？術(shù)語pH中的“p”來源于表示負(fù)對數(shù)的數(shù)學(xué)符號“p”，而“H”來源于氫元素的化學(xué)符號。更準(zhǔn)確的測量需要采用pH計(jì)來完成。pH測量系統(tǒng)由三部分組成：pH測量電極，參比電極和高輸入阻抗計(jì)。pH電極可當(dāng)做一個(gè)電池，其電壓會(huì)隨著被測溶液的pH值變化而變化。pH值測量電極是一個(gè)對氫離子敏感的玻璃球，其毫伏級的輸出會(huì)隨著玻璃球內(nèi)外的相對氫離子濃度變化而發(fā)生改變。而參考電極的輸出并不會(huì)因?yàn)闅潆x子活度的變化而改變。pH電極具有非常高的內(nèi)阻，因此難以測量pH值所導(dǎo)致的電壓變化。所以，pH計(jì)的輸入阻抗和漏泄電阻是非常重要的因素。pH計(jì)本質(zhì)上是一個(gè)高阻抗放大器，能夠準(zhǔn)確測量微小的電極電壓，并直接在模擬或數(shù)字顯示器上顯示pH值測量結(jié)果。在某些情況下，可以讀取特殊應(yīng)用或者利用離子選擇或氧化還原電位（ORP）電極的電壓。pH電極在過去50到60年間，pH電極技術(shù)并未發(fā)生太大的改變。隨著過去30到40年的技術(shù)進(jìn)步，pH電極制造仍然不失為一門藝術(shù)。電極的特制玻璃主體構(gòu)造是由玻璃吹制機(jī)吹制而成。天津PH計(jì)收費(fèi)什么是pH？pH是拉丁文“Pondus hydrogenii”一詞的縮寫（Pondus=壓強(qiáng)、壓力hydrogenium=氫）.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津**PH計(jì),PH計(jì)" src="http://tyunfile.71360.com/UploadFile/boqu123/637190816665751953/8582595.jpg"></div><p> 利用。例3．將pH值為8的NaOH溶液與pH值為10的NaOH溶液等體積混合后，溶液中氫離子濃度**接近于()×10－10mol/LB.(10－8＋10－10)mol/LC.(10－8＋10－10)mol/LD.(1×10－14－5×10－5)mol/L解析：按照，混合液的pH＝，對各選項(xiàng)分別試之，并舍去[H+]較小的，再取負(fù)對數(shù)。A的pH＝，B為－lg(×10－8)＝－lg(5×10－9)＜9；C為－lg10－8＝8；D為負(fù)數(shù)的對數(shù)，不正確。故應(yīng)選A。例4．[OH－]＝10－6mol/L的NaOH溶液10mL加入10－5mol/L的NaOH溶液100mL后的溶液的pH值()A.等于8B.大于8C.小于8D.無法判斷解析：由于前者濃度比后者小，且體積*為后者的1／10，即使加入前者100mL于后者溶液中(即相當(dāng)于等體積混合)，按，溶液的pH值也只減少，還是比8大。故應(yīng)選B。例5．某氨水的pH＝X，某鹽酸的pH＝Y(jié)，已知X＋Y＝14，但X＞11。將上述氨水與鹽酸等體積混合后，所得溶液中各種離子濃度的關(guān)系正確的是()A.[]＞[Cl-]＞[OH-]＞[H+]B.[]＞[Cl-]＞[H+]＞[OH-]C.[Cl-]＞[]＞[H+]＞[OH-]D.[]＋[H+]＝[Cl-]＋[OH-]解析：如果將氨水換成一元強(qiáng)堿，按，反應(yīng)后溶液pH＝7。但pH值相同且體積相等的氨水合一元強(qiáng)堿，氨水中氨氣的物質(zhì)的量比強(qiáng)堿大得多；故該氨水與鹽酸反應(yīng)時(shí)，氨水過量很多，溶液應(yīng)顯堿性。</p><p> 天津SailsorS壓差表1700pa,Sailsors壓差表1250pa1700pa,Sailsors壓差表1250pa塞爾瑟斯A2系列機(jī)械式微差壓表是利用簡單、無摩擦的磁體螺旋運(yùn)動(dòng)，以橡膠膜片作為敏感元件而進(jìn)行測量工作的彈性式壓力表，它能利用指針迅速指示出被測氣體的壓力，無論是正壓、負(fù)壓或差壓。此設(shè)計(jì)具有防震、搖動(dòng)和過壓的功能。而且表內(nèi)無需充注液體，也就沒有氣化、凍結(jié)、異味的問題出現(xiàn)。A2差壓表被***應(yīng)用于測量風(fēng)扇和鼓風(fēng)機(jī)的壓力、過濾器阻力、風(fēng)速、爐壓、孔板差壓、氣泡水位及液體放大器或液壓系統(tǒng)壓力等，同時(shí)也用于燃燒過程中的空氣煤氣比值控制及自動(dòng)閥控制，以及醫(yī)療保健設(shè)備中的血壓和呼吸壓力監(jiān)測。產(chǎn)品特點(diǎn)久經(jīng)考驗(yàn)的磁鏈接原理清晰易讀的4"大表盤指示精度高2%F·S從60Pa到30KPa有81種量程差壓/正壓/負(fù)壓/正負(fù)壓皆可性能指標(biāo)精度：標(biāo)準(zhǔn)為±2%FS（60Pa和125Pa為±4%FS）環(huán)境溫度：-7～60℃額定壓力：-68～100KPa過壓：約172KPa時(shí)橡膠過壓塞被沖開。過程連接：高壓和低壓孔均為1/8″錐管螺紋，兩組（側(cè)面和背面各一組）外殼材質(zhì)：壓模鑄鋁或含尼龍的ABS塑料。重量：460g(鋁),275g(ABS)標(biāo)準(zhǔn)附件：2個(gè)1/8″NPT堵頭，2個(gè)1/8″螺紋橡膠管接頭，和3個(gè)帶螺釘?shù)那度胧桨惭b螺釘卡。玻璃電極的重復(fù)性誤差和參比電極的溶液接界電勢穩(wěn)定性都不優(yōu)于0.01pH.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津**PH計(jì),PH計(jì)" src="http://tyunfile.71360.com/UploadFile/boqu123/637190816659296875/202440.jpg"></div><p> 這并非特別先進(jìn)的“高科技”過程，而是電極制造中非常關(guān)鍵且重要的一步。事實(shí)上，玻璃厚度決定了其電阻，進(jìn)而影響其輸出。溫度補(bǔ)償由于pH電極和pH測量均對溫度敏感，因此儀器設(shè)有溫度補(bǔ)償功能。溫度可通過手動(dòng)或自動(dòng)方式進(jìn)行補(bǔ)償。手動(dòng)補(bǔ)償功能需要單獨(dú)測量溫度值，可采用近似溫度值來設(shè)置pH計(jì)的手動(dòng)補(bǔ)償溫度。在自動(dòng)補(bǔ)償（ATC）設(shè)置中，單獨(dú)溫度探頭中的信號會(huì)傳輸至pH計(jì)，因此能準(zhǔn)確地確定樣本在該溫度下的pH值。緩沖溶液緩沖溶液是指具有恒定pH值且能夠避免pH值大幅度變化的溶液。緩沖溶液通常用于校準(zhǔn)pH測量系統(tǒng)（電極和測量計(jì)）。兩個(gè)電極的輸出之間可能存在微小差異，而且電極輸出隨著時(shí)間推移也會(huì)產(chǎn)生變化。因此，必須定期校準(zhǔn)pH測量系統(tǒng)。緩沖溶液適用于各種pH值，它們既可以是預(yù)混合的液體，也可以是方便使用的干粉膠囊。大多數(shù)pH計(jì)需要針對數(shù)個(gè)pH值進(jìn)行校準(zhǔn)。***個(gè)校準(zhǔn)數(shù)值通常是在等電位點(diǎn)（電極在pH7，25℃條件下所產(chǎn)生的信號為0mV）附近，第二個(gè)校準(zhǔn)數(shù)值通常是pH4或pH10。比較好選擇盡可能接近被測樣本實(shí)際pH值的緩沖溶液。酸度計(jì)的級別是按其指示器(簡稱電計(jì))的分度值(分辨率或**小顯示值)表示的.安徽**PH計(jì)</p><p style="text-indent:25px">pH計(jì)，是指用來測定溶液酸堿度值的儀器。天津**PH計(jì)</p><p> 造成長久性堵塞。（二）使用一、pH計(jì)使用1.將電極從電極保護(hù)液中取出沖洗干凈，用無塵紙吸干后置于待測溶液中（待測液一定要沒過電極泡），按開機(jī)鍵打開pH計(jì)，pH計(jì)自動(dòng)進(jìn)入測定界面，然后按“measuresave/p”鍵，等待讀數(shù)穩(wěn)定后即可讀數(shù)。，將電極沖洗干凈用無塵紙吸干，充分浸泡電極保護(hù)液中。電極保護(hù)液要及時(shí)更換，一星期更換一次。二、pH計(jì)的校準(zhǔn)1.將pH值分別為，，。2.按開機(jī)鍵打開pH計(jì)，將電極沖洗干凈用無塵紙吸干后置于pH為。按“calibrate”鍵到，等待讀數(shù)穩(wěn)定且讀數(shù)前面的光標(biāo)閃爍時(shí)，按“數(shù)字編輯”鍵，調(diào)節(jié)pH計(jì)讀數(shù)到標(biāo)準(zhǔn)液的pH值。接著按“calibrate”鍵進(jìn)入。3.將電極沖洗干凈用無塵紙吸干后置于pH為，等待讀數(shù)穩(wěn)定且讀數(shù)前面的光標(biāo)閃爍時(shí)，按“數(shù)字編輯”鍵，調(diào)節(jié)pH計(jì)讀數(shù)到標(biāo)準(zhǔn)液的pH值。然后按“calibrate”鍵進(jìn)入。4.將電極沖洗干凈用無塵紙吸干后置于pH為，等待讀數(shù)穩(wěn)定且讀數(shù)前面的光標(biāo)閃爍時(shí)，按“數(shù)字編輯”鍵，調(diào)節(jié)pH計(jì)讀數(shù)到標(biāo)準(zhǔn)液的pH值。5.按“measuresave/p”鍵保存校正結(jié)果，得出三點(diǎn)校準(zhǔn)后的直線斜率。若直線斜率在100±3范圍內(nèi)，且測定另外兩個(gè)標(biāo)準(zhǔn)緩沖液的pH值在±，則此次校準(zhǔn)有效。否則需重新校準(zhǔn)。天津**PH計(jì)</p><p style="text-indent:25px">上海博取環(huán)境技術(shù)有限公司成立于2019-04-11，專業(yè)從事環(huán)境技術(shù)領(lǐng)域內(nèi)的技術(shù)開發(fā)、技術(shù)咨詢、技術(shù)服務(wù)、技術(shù)轉(zhuǎn)讓、水處理設(shè)備、化工原料及產(chǎn)品（除危險(xiǎn)化學(xué)品、監(jiān)控化學(xué)品、民用物品、易制毒化學(xué)品）、電子產(chǎn)品、五金交電、金屬材料、汽車配件的銷售，從事貨物及技術(shù)進(jìn)出口業(yè)務(wù)。（依法須經(jīng)批準(zhǔn)的項(xiàng)目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動(dòng)）等多項(xiàng)業(yè)務(wù)，主營業(yè)務(wù)涵蓋[ "PH計(jì)", "COD分析儀", "氨氮分析儀", "重金屬分析儀" ]。唯才是舉，唯能是用：擁有優(yōu)秀人才11~50人和，是實(shí)現(xiàn)企業(yè)戰(zhàn)略目標(biāo)的基礎(chǔ)，是企業(yè)持續(xù)發(fā)展的動(dòng)力。公司業(yè)務(wù)范圍主要包括：[ "PH計(jì)", "COD分析儀", "氨氮分析儀", "重金屬分析儀" ]等。公司奉行顧客至上、質(zhì)量為首、的經(jīng)營宗旨，深受客戶好評。目前公司已經(jīng)成為[ "PH計(jì)", "COD分析儀", "氨氮分析儀", "重金屬分析儀" ]的**企業(yè)，正積蓄著更大的能量，向更廣闊的空間、更***的領(lǐng)域拓展。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/484968.html</p></div></div></div></div></div><div id="vjbtvc3" class="page-right twoColRt"><div id="zifsub3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div 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