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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gjgvmd9" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/boqu123/637190815953681641/7706077.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="zipj2oa" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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)品關鍵詞：</span>安徽本地PH計,PH計</p><p><span>***更新：</span>2020-07-07 22:24:17</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="xvxeg3n" 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: </span>021-20966896</p><p><span>地址: </span>南匯新城鎮(zhèn)海洋一路333號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="8bkbiu4" class="page-proshow02"><p class="title">詳細說明</p><div id="jse3j7d" class="box"><p><p> PH計的說明品質(zhì)保證。在線pH計基本型變送其提供簡單的測量和報警功能，擴展功能軟件和硬件模塊化后可以應用于特殊的場合，如果需要，可使用擴展模塊。德國E+H在線pH計一般參數(shù)測量范圍：0-14pH,精度：℃隔離輸出：0-20mA或4-20mA,報警器：***多4組報警，SPDT,NO或NC控制輸出：P,PI,PD,PID電磁閥或脈沖泵電極兼容性：pH玻璃或銻，電源：115/230VAC,50/60Hz或24VAC/DC溫度補償：自動或手動Pt100防護等級：OPM253IP65尺寸：OPM253LxWxD247X170X115mm現(xiàn)場壁掛安裝德國E+H在線pH計應用污水處理中和反應（電鍍）水處理水文監(jiān)測德國E+H在線pH計特點和優(yōu)點現(xiàn)場安裝或盤裝式變送器通用型-pH值和氧化還原測量（mV或%）可通過軟件開關切除操作簡單-合理的菜單式結構，六種語言顯示，安徽本地PH計，使組態(tài)更方便-兩行顯示可同時顯示測量值和溫度-標定簡單，安徽本地PH計，借助CAL鍵實現(xiàn)兩點標定使用安全-過壓（雷電）保護，安徽本地PH計，符合EN61000-4-5標準-手動觸點輸出控制-標定的合理性檢測-用戶自定義組態(tài)報警觸點和故障電流化工用pH電極技術參數(shù)測量范圍:0~14pH壓力范圍:0~13bar溫度范圍:0~110℃***小電導率值:500uS/cm反應時間:30秒內(nèi)達到終值的95%化工用pH電極應用帶開放式孔徑隔膜的pH/氧化還原電極。玻璃電極的重復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.安徽本地PH計</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽本地PH計,PH計" src="http://tyunfile.71360.com/UploadFile/boqu123/637190815953681641/7706077.jpg"></div><p style="text-indent:25px">技術參數(shù) 測量范圍： PH 值 0～14.00pH，分度值 0.01pH；溫度 0～99.9℃，分度值 0.1℃；電位值 –1999～+1999mV，分度值 0.1mV；溫度補償： 0～99.9℃ ，25℃為基準；被測水樣： 0～99.9℃，0.6MPa；溫度補償誤差： ±0.03pH；重復性誤差： ±0.02pH；穩(wěn) 定性： ±0.02pH/24h；輸入阻抗： ≥10Ω；時鐘精度： ±1分/月；電流隔離輸出： 0～10mA（負載<1.5 kΩ）;4～20 mA（負載<750Ω）；輸出電流誤差： ≤±1%FS；數(shù)據(jù)存儲數(shù)量： 1個月（1點/5分鐘）；高低報警繼電器： AC220V，3A； RS485通訊接口：選配；電源： AC220V±22V，50Hz±1Hz；防護等級： IP65；外形尺寸： 146（長）×146（寬）×108（深）mm; 開孔尺寸：138×138 mm；重量： 0.8kg；工作條件：環(huán)境溫度 0～60℃ 相對濕度 <85%；安徽官方PH計多少錢按用途分為：實驗室用pH計，工業(yè)在線pH計等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽本地PH計,PH計" src="http://tyunfile.71360.com/UploadFile/boqu123/637190816659101563/4873436.jpg"></div><p> 盡管ph計的種類很多，但是校準的方法無外乎就是三種，這篇文章介紹了一下ph計的三種方法以及ph計校準三點校準步驟教程，具體的一起來了解一下。ph計校準的三種方法一、ph計的一點校準任何一種pH計都必須經(jīng)過pH標準溶液的校準后才可測量樣品的pH值，對于測量精度在的樣品，可以采用一點極準方法調(diào)整儀器，一般選用。有些儀器本身精度只有，因此儀器只設有一個¨定位¨調(diào)節(jié)旋鈕。具體操作步驟如下：（1）測量標準緩沖液溫度，查表確定該溫度下的pHs值，將溫度補償旋鈕調(diào)節(jié)到該溫度下。（2）用純水沖洗電極并甩干。（3）將電極浸入緩沖溶液晃動后靜止放置，待讀數(shù)穩(wěn)定后，調(diào)節(jié)定位旋鈕使儀器顯示該標準溶液的pH值。（4）取出電極沖洗并甩干。（5）測量樣品溫度，并將pH計溫度補償旋鈕調(diào)節(jié)至該溫度值二、ph計的二點校準對于精密級的pH計，除了設有¨定位¨和¨溫度補償¨調(diào)節(jié)外，還設有電極¨斜率¨調(diào)節(jié)，它就需要用二種標準緩沖液進行校準。一般先以¨定位¨校準，然后根據(jù)測試溶液的酸堿情況，選用（酸性）或（堿性）緩沖溶液進行¨斜率¨校正。具體操作步驟為：（1）電極洗凈并甩干，浸入，儀器溫度補償旋鈕置于溶液溫度處。待示值穩(wěn)定后。</p><p> RT/F）Ln[H+]式中：R—氣體常數(shù)T—溫度F—法拉第常數(shù)Ln[H+]—氫離子活度的負對數(shù)Esb?Sb2O3—電極系統(tǒng)中截距，它隨待測溶液的不同而變化，即在不同的溶液體系中銻電極電勢與氫離子濃度的對應關系是不同的，一般在45~50mV/PH之間，因此，銻電極變送器宜采用現(xiàn)場標定方法l2.電路原理PHT型酸度變送器電子單元封固成固體模塊，對現(xiàn)場振動，潮濕及腐蝕性氣體有良好的防護功能，其原理與接線見圖一。為現(xiàn)場使用安全，采用AC24V由二次儀表供電，供給清洗電機和變送電路，從傳感器來的基準信號和PH酸度信號經(jīng)放大后送給斜率調(diào)整和定位調(diào)整電路，使信號內(nèi)阻降低并可調(diào)節(jié)。經(jīng)放大后的PH信號與溫度補償信號迭加，送進電壓電流轉(zhuǎn)換電路，輸出與PH值對應的4—20mA恒流電流信號，變送器為二線制非隔離式4—20mA變送器。技術指標量程范圍0—14PH測量精度±（2—12PH時）輸出信號4—20mA輸出負載電阻0—600Ω參比電極內(nèi)阻≤10KΩ溫度補償電阻Pt1000輸入信號范圍40—75mV/PH清洗方式瑪瑙刀雙刮板式清洗電機AC24V1轉(zhuǎn)/分安裝環(huán)境溫度—10~65℃，濕度95%。但是，選擇**辨率的儀器可以比較大限度地克服或消除電計對測試誤差的影響。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽本地PH計,PH計" src="http://tyunfile.71360.com/UploadFile/boqu123/637066579542880859/2224532.jpg"></div><p> pH值的測量pH試紙或指示劑會隨著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？術語pH中的“p”來源于表示負對數(shù)的數(shù)學符號“p”，而“H”來源于氫元素的化學符號。更準確的測量需要采用pH計來完成。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。pH電極可當做一個電池，其電壓會隨著被測溶液的pH值變化而變化。pH值測量電極是一個對氫離子敏感的玻璃球，其毫伏級的輸出會隨著玻璃球內(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因為氫離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值所導致的電壓變化。所以，pH計的輸入阻抗和漏泄電阻是非常重要的因素。pH計本質(zhì)上是一個高阻抗放大器，能夠準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值測量結果。在某些情況下，可以讀取特殊應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電極技術并未發(fā)生太大的改變。隨著過去30到40年的技術進步，pH電極制造仍然不失為一門藝術。電極的特制玻璃主體構造是由玻璃吹制機吹制而成。測量時，電極球泡應全部浸入被測溶液中。江蘇原裝PH計</p><p style="text-indent:25px">。表1的數(shù)據(jù)是精度為0.01級、經(jīng)過計量檢定合格的pH計在未校準時與校準后的測量值，可以看出校準的重要性。安徽本地PH計</p><p> 舊電極響應遲緩，膜電阻高，斜率低。用氫氟酸浸蝕掉外層膠層，經(jīng)常能改善電極性能。若能用此法定期***內(nèi)外層膠層，則電極的壽命幾乎是無限的。4、參比電極的貯存銀-氯化銀電極比較好的貯存液是飽和氯化鉀溶液，高濃度氯化鉀溶液可以防止氯化銀在液接界處沉淀，并維持液接界處于工作狀態(tài)。此方法也適用于復合電極的貯存。5、參比電極的再生參比電極發(fā)生的問題絕大多數(shù)是由液接界堵塞引起的，可用下列方法解決：（1）浸泡液接界：用10%飽和氯化鉀溶液和90%蒸餾水的混合液，加熱至60～70℃，將電極浸入約5cm，浸泡20分鐘至1小時。此法可溶去電極端部的結晶。（2）氨浸泡：當液接界被氯化銀堵塞時可用濃氨水浸除。具體方法是將電極內(nèi)充洗凈，液放空后浸入氨水中10～20分鐘，但不要讓氨水進入電極內(nèi)部。取出電極用蒸餾水洗凈，重新加入內(nèi)充液后繼續(xù)使用。（3）真空方法：將軟管套住參比電極液接界，使用水流吸氣泵，抽吸部分內(nèi)充液穿過液接界，除去機械堵塞物。（4）煮沸液接界：銀-氯化銀參比電極的液接界浸入沸水中10～20秒。注意，下一次煮沸前，應將電極冷卻到室溫。（5）當以上方法均無效時，可采用砂紙研磨的機械方法去除堵塞。此法可能會使研磨下的砂粒塞入液接界。安徽本地PH計</p><p style="text-indent:25px">上海博取環(huán)境技術有限公司是一家從事環(huán)境技術領域內(nèi)的技術開發(fā)、技術咨詢、技術服務、技術轉(zhuǎn)讓、水處理設備、化工原料及產(chǎn)品（除危險化學品、監(jiān)控化學品、民用爆炸物品、易制毒化學品）、電子產(chǎn)品、五金交電、金屬材料、汽車配件的銷售，從事貨物及技術進出口業(yè)務。（依法須經(jīng)批準的項目，經(jīng)相關部門批準后方可開展經(jīng)營活動）的公司，創(chuàng)建于2019-04-11。博取環(huán)境深耕行業(yè)多年，始終以客戶的需求為向?qū)?，為客戶提供高品質(zhì)的[ "PH計", "COD分析儀", "氨氮分析儀", "重金屬分析儀" ]。公司擁有多年的行業(yè)經(jīng)驗，每年以銷售收入達到700-1000萬元，如果您想了解更多產(chǎn)品信息，請通過頁面上的電話聯(lián)系我們。博取環(huán)境始終關注儀器儀表市場，以敏銳的市場洞察力以準確定位，實現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/529056.html</p></div></div></div></div></div><div id="smovhth" class="page-right twoColRt"><div id="bl3f2gx" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="kegxjvo" 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配件哪家強信息推薦自業(yè)物資供應" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="etfmdut" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" alt="寧波寧海直接考A2有幾個科目真誠推薦寧波助學商務信息咨詢供應" class="vcenter" 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