Vibrating Level Switch

Point-level detection for fine powder or low conductivity granular

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Vibrating Level Switch

Summary

Vibrating Level Switch is a point-level detection sensor that detects the presence or absence of material by monitoring the damping of the vibrating probe. When the material reaches the vibrating probe and the vibration is reduced, it provides ON/OFF level detection signal for powders, granules and some liquids.

Benefits

Reliable for low density material

Stabel detection for low density material which may make the rotary paddle level switch free-spins.

Unaffected by material properties

Stable detection for such material which properties such as density or dielectric constant may vary and make the capacitance level switch unstable.

Low maintenance operation

The simple vibrating probe design resists material buildup on the probe and requires minimal cleaning.

Features

High Sensitivity

Detectable from bulk density 0.02g/cbm.

Applicable from low density fine powder to general granular.

Stable Detection

Stable detection unaffected by material properties such as dielectric constant or conductivity because of the operating principle.

Customer Friendly Design

2-color operation LED visible through the housing cover
Screw-clamp Terminal Block
310-degree swivel housing
Detection mode (upper or lower limit) selectable
Free power source (AC/DC22-264V 50/60Hz)

Operating Principle

Vibrating probe level switch uses a piezoelectric drive to oscillate a probe at its natural resonant frequency.

When the probe is in free air, it vibrates with a defined amplitude.

Once the probe is covered by material, the vibration becomes damped due to the mechanical load of the medium, causing a measurable decrease in frequency and amplitude.

The electronics continuously monitor these changes and convert the damping condition into a switching signal.

This principle enables reliable level detection independent of density, dielectric constant or conductivity.