KEL-2 Insulator・Electrobe-holding・amplifier
Applicable to any site if the measuring material (sand for building material, gravel, crushed stones etc.) contains some moisture.
Standard model does not include detection probe. We provide it as option.
Easy sensitivity setting by turning the dial.

Operating Principles

A measured substance that contains moisture to some extent is constantly made contact with the electrode. When the resistance between the electrode and the metal tank wall is reduced, the change of the resistance is detected and the output contact is switched. When the measured substance passes over, the output contact is restored to the initial state.