Conductivity measuring device.

摘要

A conductivity measuring device comprises a low-potential intermediate electrode (6) which is capable of being in connected state by a switch (7) and which is disposed between a couple of measuring electrodes (3, 4) for transmitting and receiving. Each of said electrodes is made contact with a body (1) to be tested so that the conductivities of the surface and the inner portion of said body (1) to be tested can be measured, respectively.