站場內(nèi)的電位測量設(shè)施

(1)?站場內(nèi)無需測試樁，任何露出地面的設(shè)施都可以作為測 量接線點(diǎn)。站場內(nèi)安裝參比管，避免站內(nèi)碎石對參比電極放置的影響。站場內(nèi)陰極保護(hù)電流的分布只取決于陽極地床的位置，與陰極線的連接位置無關(guān)。參比電極電位讀數(shù)只取決于參比電極的放置位置，和萬用表紅表筆與站內(nèi)結(jié)構(gòu)接觸的位置無關(guān)。

(2)?參比電極通電電位受陽極電壓場的影響，差別很大。不要在意通電電位的大小，可用斷電電位來判斷陰極保護(hù)電流的分 布。陰極保護(hù)準(zhǔn)則宜采用試片100mV極化偏移或- 850mV。準(zhǔn)則。恒電位儀設(shè)置在恒流輸出模式。

Potential measurement facilities in the station

(1) There is no need for test piles in the station, and any facilities exposed to the ground can be used as measurement connection points. The reference pipe shall be installed in the station to avoid the influence of the crushed stone in the station on the placement of the reference electrode. The distribution of cathodic protection current in the station only depends on the position of anode ground bed and has nothing to do with the connection position of cathode line. The potential reading of the reference electrode only depends on the placement position of the reference electrode, and has nothing to do with the position where the red probe of the multimeter contacts the structure in the station.

(2) The electrifying potential of the reference electrode is affected by the anode voltage field, which is very different. Do not pay attention to the size of the energizing potential, and the distribution of cathodic protection current can be judged by the energizing potential. The cathodic protection criterion should be 100mV polarization deviation or - 850mv of the test piece. Guidelines. The potentiostat is set in the constant current output mode.