Serviceline Industrial Sensors
Sales phone: 0161 622 6308
Tech phone: 0161 622 6311
Fax: 0161 624 6537
Serviceline Explosion Protection
Sales phone: 0161 622 6309
Tech phone: 0161 622 6313
Fax: 0161 624 6537

Measuring principle

An insulated metal probe mounted in a metal container forms a capacitor together with the metal wall whose capacitance continually increases as the medium level increases. Hence, for capacitive measurements a medium with a constant permittivity is required.
The simple and robust construction (as rod or rope sensor) allows level measurement of liquids, granular solids, conductive and non-conductive media.

Operation mode

The metal container wall and measuring sensor form the two electrodes of a capacitor. The capacitance changes as the level increases due to the dielectric constant of the medium.