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 Rotary
paddles are one of the oldest types of level sensors. They are
easy to use, reliable, and applicable to all kinds of dry bulk
materials such as flakes, pellets, or powders.
These Rotary Level Measurement units have a small electric motor
to turn a shaft with one to three vanes or paddles. If the shaft
turns freely, no material is present. If the paddles encounter
material, the shaft stalls and signals material presence at that
level in the vessel. Higher-end Rotary Level Measurement units
not only indicate material presence, but also have various "fail-safe"
mechanisms to detect when the device is not working properly due
to power failure or other problems.
Rotary Level Measurement Advantages:
Rotary Level Measurement Disadvantages:
- Mechanical
(Moving Parts)
- Very
High Maintenance
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