站场内的电位测量设施 Potential measurement facilities in the station

站场内的电位测量设施

(1) 站场内无需测试桩，任何露出地面的设施都可以作为测 量接线点。站场内安装参比管，避免站内碎石对参比电极放置的影响。站场内阴极保护电流的分布只取决于阳极地床的位置，与阴极线的连接位置无关。参比电极电位读数只取决于参比电极的放置位置，和万用表红表笔与站内结构接触的位置无关。

(2) 参比电极通电电位受阳极电压场的影响，差别很大。不要在意通电电位的大小，可用断电电位来判断阴极保护电流的分 布。阴极保护准则宜采用试片100mV极化偏移或- 850mV。准则。恒电位仪设置在恒流输出模式。

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.