Vibration Type Level Switch - VLS Series

• Only the tip of the vibrating blade is sensitive and not the base, build-up on the container wall
has no influence on the function of the instrument.

• The shape of the blade and its vibration have a self-cleaning effect.

• No - Moving parts, maintenance required and calibration required

• Unaffected by - Environmental changes (e.g. temperature, pressure, humidity), material
changes, dust clouds and agitation

• Maximum – Versatility

• Design - Single Prong - The single prong design with its sharp edged vibrating blade prevents
material build-up typically associated with the dual prong “tuning fork“ design.

• The VLS can be used for light material with densities as low as to 10 g/liter. Strong stainless
steel construction makes the VLS tough for the use with heavy materials such as cement.

• Fail-safe - The electronic circuit of the VLS indicates power failure. If power supply fails the relay
drops into alarm condition.

The VLS series is a piezoelectric driven vibration type level switch that detects the level in bins, silos and hoppers, filled with grained or powdered materials (bulk solids). The instrument can be used for overfill protection, for high or low level alarm.

VLS designed for the detection of all kind of dry bulk solids, powered grain or granular state The following list shows some of the materials the VLS has been successfully used for:

Because of its maximum versatility, the VLS is ideal for applications where contents change are common. Thus, instrument does not require re-calibration for a new or different material.