VIBRAROD Vibratory Probe

  Principle of Operation The VibraRod line of point level sensors is a mechanical resonance system that is excited and kept in resonance by the sensor's electronic circuitry. Two piezoelectric crystals are mounted on the internal portion of the probes base. An electrical signal is applied to one crystal at the frequency corresponding to the probes self-resonance. This electrical excitation causes physical deformation of the crystal which in-turn creates probe vibration. When no material is present around the VibraRod's probe, the vibration of the probe is received by the second crystal. This causes physical deformation of the second crystal which generates a voltage analyzed by the electronic circuitry. With material present and surrounding the probe, the vibration is dampened so that the second crystal is not able to generate as high a voltage as when no material is present. The electronic circuitry senses this change and the relay output changes accordingly.

Single Probe Vibrating Rod Design Used For Most Powders & Solids
	Easy Setup - No Calibration
	Universal Power Supply
	No Clogging/Bridging Like Tuning Fork Designs
	Unaffected by Environmental & Material Changes - No Calibration
	Variety of Probe Configurations
	Pipe & Cable Extension Units Available
	Standard Version with Plastic or Aluminum Enclosure
	Hazardous Location Approvals

Addendum (6/1/09): Ordinary Location Unit Only - Inserted portion of probe has been shortened by 1.1 inches (28mm) to withstand stronger lateral forces.