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Level indicator PSP-3 is used to signalling of liquid level. It can be used to clean and polluted liquids (water, sewage, chemicals) in open and close containers. It is proof on sloshing of liquid.
It is built of flexible wire, external ballast and float.
Inside of float which is made of plastic there is close switching-over system (switched-over contact is joined with wire).
Switched-over contact is switched-over as result of changing of angle of float tilt which is caused of liquid level change.
When liquid level is below float then contacts which are connected with wire in brown and black isolation are shorted.
In case of immersion of float in liquid, the process will be reversed.