溶解氧電極 工業(yè)溶氧電極 溶氧電極
型號(hào):GR/DO100
北京GR/DO100溶解氧電極現(xiàn)貨供應(yīng)采用極譜式電極,陽(yáng)電極為Ag/AgCl、陰電極為鉑金(Pt)組成,兩者之間充滿特殊成份的是電解液。由硅橡膠滲透膜包裹于電極四周。測(cè)量時(shí),電極間加上675mV的極化電壓,氧滲透過(guò)隔膜在陰極消耗,同時(shí)等量的氧在陽(yáng)極產(chǎn)生,這個(gè)動(dòng)態(tài)過(guò)程進(jìn)行到兩邊的氧分壓相同時(shí)達(dá)到平衡.此時(shí)兩電極間的電流與氧分壓成正比,二次表檢測(cè)到此電流,再經(jīng)過(guò)一系列變換,得到氧濃度和氧含量.同時(shí),NTC(負(fù)溫度系數(shù)熱敏電阻)檢測(cè)被測(cè)量液的溫度,二次表采樣后進(jìn)行溫度補(bǔ)償,將氧濃度或氧含量折算成25℃時(shí)的值。
陰極反應(yīng):O2+2H2O+4e→4OH
陽(yáng)極反應(yīng):4Ag+4Cl-→4AgCl+4e
北京GR/DO100溶解氧電極現(xiàn)貨供應(yīng)溶氧電極可用來(lái)測(cè)量用來(lái)對(duì)氧含量會(huì)影響反應(yīng)速度、流程效率或環(huán)境的流程進(jìn)行監(jiān)控:如水產(chǎn)養(yǎng)殖、生物反應(yīng)、環(huán)境測(cè)試(湖、溪、海洋)、水/廢水處理、葡萄酒生產(chǎn)。 T401ppm型溶解氧電極具有較高的穩(wěn)定性和可靠性,可在惡劣環(huán)境中使用,維護(hù)量也較小。
使用極譜式電極時(shí),校正或測(cè)量前要預(yù)熱至少15-30分鐘。
為確保膜的電解液內(nèi)沒(méi)有氣泡,ASI膜帽在設(shè)計(jì)上要求在裝上膜頭時(shí)要排除掉所有液腔內(nèi)的空氣。
膜表面上不能留有任何氣泡,否則它會(huì)將氣泡當(dāng)作氧飽和樣品進(jìn)行讀數(shù)。
即使使用的是帶有自動(dòng)溫度補(bǔ)償?shù)膬x表,也要在接近樣品溶液的溫度下校正電極。
電極應(yīng)在空氣中校正,以空氣作為100%的飽和溶解氧標(biāo)準(zhǔn)點(diǎn)。
由于電極對(duì)氧的消耗,探頭表面氧的濃度會(huì)瞬間降低,因此測(cè)量時(shí)要對(duì)溶液進(jìn)行攪拌,這很重要。
北京GR/DO100溶解氧電極現(xiàn)貨供應(yīng)
如膜已破損則要進(jìn)行更換。
技術(shù)參數(shù):
測(cè)量范圍:0~20mg/L (ppm),0~200%
適用溫度:0~130℃溫補(bǔ)范圍:0~130℃測(cè)量原理:電流式傳感器
透氣膜厚:50µm
電極材質(zhì):UPVC或361L
傳感材料:POM外管、銀管、金絲帶溫度補(bǔ)償功能
響應(yīng)時(shí)間:60秒可達(dá)90%(上行,20℃時(shí))
極化時(shí)間:2小時(shí)
最低流速:2.5cm/s
電纜長(zhǎng)度:標(biāo)準(zhǔn)配置線長(zhǎng)10m
安裝方式:3/4管螺紋安裝
標(biāo)準(zhǔn)配制:電極一支、備用膜頭兩只、專(zhuān)用電解液一瓶
● 溫度范圍:0~80℃
● 壓力范圍:0~58psig
● 溶氧響應(yīng)時(shí)間:60秒(25℃時(shí)) 20秒(37℃時(shí))
● 溫度補(bǔ)償:22KΩ
● 特征:316L不銹鋼外殼
● 接口:pg13.5
實(shí)驗(yàn)室溶解氧電極
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shaft,1 m cable with 8 pole plug,sensor 5platinum rings,cell constant 0.650 cm-1,temp.-sensor NTC 30kOhm,length 120 mm,12 mm?,-5...+80°C5,210.00285106260 LF 913 T 5 pole cell,glass shaft,1 m cable with 8 pole plug,sensor 5platinum rings,cell constant 0.650 cm-1,temp.-sensor NTC 30kOhm,length 120 mm,12 mm?,-30...+135°C5,990.00285111623 9009/22 Membrane covered amperometric sensor,plastic shaft,kathodeplatinum,anode silver,temperature sensor NTC 100 kOhm,flange cap,2 m fixed cable with free ends,length 120 mm,12mm?,0...+50°C,i.e.for oxygen meter CG 8676,270.00285111664 9009/61 Membrane covered galvanic sensor,plastic shaft,IMTtemperature compensation,incl.maintenance set,1 m fixedcable with 8-pole plug,length 145 mm,15.25 mm?,0...+50°C8,850.00285111689 9009/610 Membrane covered galvanic sensor,plastic shaft,IMTtemperature compensation,incl.maintenance set,10 m fixedcable with 8-pole plug,length 145 mm,15.25 mm?,0...+50°C9,660.00285111697 9009/63 Membrane covered galvanic sensor,plastic 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