We have a need to measure conductivity. If we use it in still water, we get erroneous reading, and manufacturer says it could be due to air lock. So we tried in running water. However, there, conductivity becomes proportional to pressure significantly.

We use EC to indirectly make sense of TDS which is absolute amount no matter water is running or still, so how do we measure EC, without any air lock, or pressure? Or any other way with pressure?