... in the cross-section of the pipe.Only liner and electrode contact to the fluids, choose proper material of liner ... and electrode to prevent it from corrosion to ensure meter long operation ... DN2800) Flowing Direction: Forward, Reverse Electrode Material: 316L, Pt, Ta, Ti, HB, HC Electrode Type: Standard, blade, removable Electrode Number: 2 ~ 6 pcs Flange ...