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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(mǎn)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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