多電極式電導(dǎo)電極，一般在支持體上有幾個(gè)環(huán)狀的電極，通過(guò)環(huán)狀電極的串聯(lián)和并聯(lián)的不同組合，可以制成不同常數(shù)的電導(dǎo)電極。環(huán)狀電極的材料可以是石墨、不銹鋼、鈦合金和鉑金。
電導(dǎo)電極還有四電極類(lèi)型和電磁式類(lèi)型。四電極電導(dǎo)電極的優(yōu)點(diǎn)是可以避免電極極化帶來(lái)的測(cè)量誤差，在國(guó)外的實(shí)驗(yàn)式和在線(xiàn)式電導(dǎo)率儀上較多使用。電磁式電導(dǎo)電極的特點(diǎn)是適宜于測(cè)量高電導(dǎo)率的溶液，一般用于工業(yè)電導(dǎo)率儀中，或利用其測(cè)量原理制成單組分的濃度計(jì)，如鹽酸濃度計(jì)、硝酸濃度計(jì)等。

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