Settling and Humus Scraper Tanks
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Settling and Humus Scraper Tanks
The tip of the capacitance probe will detect the metal arm of the biological filter as it rotates.
To improve the system you can mount a metal plate on the end of the arm.
As the filter rotates the probe will detect the metal probe as it passes by.
A simple but effective system
The probe can be a low powered stand alone probe or a probe with a separate controller incorporating time delays