They are based on an electronic or mechanical principle in which a magnetic field is detected.
Magnetic proximity sensors are used for non-contact position detection and they send an ON-OFF signal to the control system.
Polyamide level sensors can be used in water with low levels of chlorine (such as in a swimming pool).
Polypropylene level sensors should therefore be used in this type of liquid.
To solve this kind of problem, the sensor needs to be placed in an anti-wave system.
Usually, this system consists of a closed tube with 2 holes (you need to take into account the evacuation of air when the level rises).
The smaller the holes are, the bigger the difference is between the actual tank level and level inside the tube. Therefore, a compromise is required: eliminating waves while maintaining a good monitoring level.
The main advantages are as follows: