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class="content"><p><span>需求數量：</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>產品關鍵詞：</span>陜西PH計便宜,PH計</p><p><span>***更新：</span>2020-12-14 05:06:03</p><p><span id="click" >瀏覽次數：1次</span></p><a rel="nofollow" class="button">聯系我們</a></div></div><div id="sgeioko" 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="cycquq2" class="page-proshow02"><p class="title">詳細說明</p><div id="40o0a4s" class="box"><p><p> 具有二點或一點自動標定功能，方便準確。自動溫度補償。能顯示電極系統(tǒng)的零電位pH值與斜率。4～20mA電流輸出。PH電極的選用電極的準確性和穩(wěn)定性怎樣，是決定pH表好壞的關鍵因素之一。特別是低電導率水質，對電極的要求更高。若用普通的電極來測量，穩(wěn)定性很差，而且使用壽命又短，滿足不了要求。若用戶指定電極，其護套和測量池可定做。三復合電極：測量電極、參比電極和溫補電極復合成一體，方便安裝、拆洗。兩復合電極：測量電極和參比電極復合成一體。零電位（等電位點）：隔膜形式：由多孔纖維制成，隔離良好，防污染。雙液接結構，陜西PH計便宜，陜西PH計便宜，具有低阻性能，適合大部分工業(yè)場合。敏感玻璃膜：酸度敏感部分，陜西PH計便宜，有四種可選，可適合不同場合。注：電極有多種型號和規(guī)格，訂貨時請說明使用場合，便于我們給你配電極。什么是pH？pH是拉丁文“Pondus hydrogenii”一詞的縮寫（Pondus=壓強、壓力hydrogenium=氫）.陜西PH計便宜</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="陜西PH計便宜,PH計" src="http://tyunfile.71360.com/UploadFile/boqu123/637190815951425781/8627097.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”來源于表示負對數的數學符號“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。陜西PH計便宜。表1的數據是精度為0.01級、經過計量檢定合格的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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="陜西PH計便宜,PH計" src="http://tyunfile.71360.com/UploadFile/boqu123/637190815949619141/1653892.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＝，對各選項分別試之，并舍去[H+]較小的，再取負對數。A的pH＝，B為－lg(×10－8)＝－lg(5×10－9)＜9；C為－lg10－8＝8；D為負數的對數，不正確。故應選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(即相當于等體積混合)，按，溶液的pH值也只減少，還是比8大。故應選B。例5．某氨水的pH＝X，某鹽酸的pH＝Y，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堿，按，反應后溶液pH＝7。但pH值相同且體積相等的氨水合一元強堿，氨水中氨氣的物質的量比強堿大得多；故該氨水與鹽酸反應時，氨水過量很多，溶液應顯堿性。</p><p> PH計的說明品質保證。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，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，借助CAL鍵實現兩點標定使用安全-過壓（雷電）保護，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。測量時，電極球泡應全部浸入被測溶液中。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="陜西PH計便宜,PH計" src="http://tyunfile.71360.com/UploadFile/boqu123/637190815948867188/5427677.jpg"></div><p style="text-indent:25px">儀器特點：全新版面設計，鑄鋁殼體，金屬質感，打造高品位E時代化水儀表！簡單的菜單結構,文本式的人表對話：與傳統(tǒng)的儀表相比, DOG-2082功能增加了很多,但由于采用了分門別類的菜單結構,類似微機的操作方法,使用起來更清晰、方便。不必記憶操作步驟和操作順序;可以不用說明書,按照屏幕上的提示就可操作。智能化：采用高精度AD轉換和單片機微處理技術，能完成pH值和溫度的測量、溫度自動補償、儀表自檢等多種功能。可靠性：元器件集成到一塊線路板上, 沒有了復雜的功能開關、調節(jié)旋鈕和電位器。雙高阻輸入：采用新器件，雙高阻輸入阻抗高達1012Ω，抗干擾能力強；溶液接地：消除地回路的干擾。電流隔離輸出：采用光電耦合隔離技術，抗干擾能力強，可遠傳；通訊接口：可方便聯入計算機進行監(jiān)測和通訊。自動溫度補償：在0～99.9℃自動溫度補償。防水防塵設計：防護等級IP54，適宜戶外使用。采用菜單結構，類似微機操作，操作簡單，操作步驟全程中文提示，可不用說明書，即可方便完成。多參數同屏顯示：在同一屏幕上顯示pH值、輸入mV數（或輸出電流）、溫度、時間和狀態(tài)等。原電池的電動勢和氫離子濃度之間存在對應關系，氫離子濃度的負對數即為pH值。陜西PH計便宜</p><p style="text-indent:25px">在進行操作前，應首先檢查電極的完好性。甘汞電極。由于復合電極使用比較***，以下主要討論復合電極。陜西PH計便宜</p><p style="text-indent:25px">電極安裝方式：編輯流通式/沉入式/法蘭式/管道式 pH（4、7、9）標準緩沖液各一包。可根據不同場合選配純水,污水,兩復合或三復合電極;采用流通式,沉入式,法蘭式,管道式或側壁式安裝. 在線PH計電極的保養(yǎng) 1、測量時，應先在蒸餾水中（或去離子水）洗凈，并用濾紙吸干水分，防止雜質帶進被測液中，電極球泡和液絡部應完全浸在被測液內。 2、電極不用時應洗凈，**加有3.5M氯化鉀溶液的保護套，或將電極**加有3.5M氯化鉀溶液的容器。 3、檢查接線端子處是否干燥，如有沾污，請用無水酒精擦拭，吹干后使用。 4、應避免長期浸泡在蒸餾水或蛋白質溶液中，并防止與有機硅油脂接觸。 5、使用時間較長的電極，它的玻璃膜可能變成不透明或附有沉積物，此時可用鹽酸洗滌，并用水沖洗。 6、建議用戶每月對電極進行清洗一次以及配合儀器校正。 PH計電極圖片 PH計電極圖片 7、當您用以上方法對電極進行維護和保養(yǎng)時仍不能進行校正程序及正常測定，說明電極已無法恢復響應，請更換電極。陜西PH計便宜</p><p style="text-indent:25px">上海博取環(huán)境技術有限公司致力于儀器儀表，是一家生產型公司。公司業(yè)務涵蓋PH計，COD分析儀，氨氮分析儀，重金屬分析儀等，價格合理，品質有保證。公司從事儀器儀表多年，有著創(chuàng)新的設計、強大的技術，還有一批**的專業(yè)化的隊伍，確保為客戶提供良好的產品及服務。博取環(huán)境憑借創(chuàng)新的產品、專業(yè)的服務、眾多的成功案例積累起來的聲譽和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2396377.html</p></div></div></div></div></div><div id="eaio24c" class="page-right twoColRt"><div id="20mi4ce" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="gmkiok0" 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="4ocyuiw" class="recomPic likePro"><a 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