What is a level switch?
Level switches transmit information to the system when the liquid reaches a predetermined height. The system then controls the process based on this information.
Level switch selection
We assist in selecting a level switch that meets the requirements of the application. Contact our representatives for more information.
Our range includes float switches that can be installed from the top or from the sides. The float switch is a traditional and quite cost-effective method for performing an on-off level measurement. Vertical models are available with several limit switches.
A somewhat more modern method is electrode measurement. Its advantage is that it is maintenance‐free, as the electrode does not have any so-called moving parts. Electrodes are clearly suitable for higher temperatures than float switches, making them applicable, for example, in steam boilers.
If limit switches are sufficient for level control, the best solution is the GESTRA conductive electrode, which can provide up to four separate limit signals. A compact model is also available, in which four separate voltage-free changeover contacts are integrated into the electrode.
Conductive level switches based on conductivity measure the resistance when immersed in the liquid. They are used for conductive liquids. Applications include dry run protection, prevention of overfilling, and on-off level control.
Limit switches are also available for magnetically controlled level indicators, providing limit data in addition to a local display.
