The vibrating rod sensor provides reliable point level sensing in a wide variety of applications within powder and bulk solids markets.
The vibrating probe principle overcomes typical application difficulties associated with changes in material, electrical dielectric
constant, temperature or humidity while providing reliable solid state electronic circuitry that requires no cali bration. 
The Vibra has the ability to detect a wide range of material densities.

Local Indicator
Bi-color LED; Red indicates de-energized relay and output "on"
Green indicates energized relay and output "off"
No LED illuminated indicates improper supply voltage or damaged circuitry

Principle of Operation
The 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 probe's base. An electrical signal is applied to one
crystal at the frequency corresponding to the probe's 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.


The level sensor provides reliable point level sensing in a wide variety of applications for most bulk solid materials. The single-prong
vibrating rod principle requires no calibration, is easily setup and eliminates the application problems associated with build-up and
clogging between tines on a typical "tuning fork" device.
Grain
Polystyrene
Cereal
Lime
Clay
Plastics
Cement
Rice
Tobacco
Carbon Black
Sawdust
Flour
Fly Ash
Food

Available Configurations

The cable extension probe configuration extends the detection length beyond the standard and pipe extension probes. This version
of the VibraRod level sensor is for use in top mount applications only and can be used for both high and low level applications.

Warranty
Monitor Technologies LLC warrants each it manufactures to be free from defects in material and workmanship under normal use and service for two years from the date of purchase. The purchaser must notify Monitor of any defects within the warranty period, return the product intact, and prepay transportation charges. The obligation of Monitor Technologies LLC under this warranty is limited to repair or replacement at its factory. This warranty does not apply to any product which is repaired or altered outside of Monitor Technologies' factory, or which has been subject to misuse, negligence, accident, incorrect wiring by others, or improper installation. Monitor Technologies LLC reserves the right to change the design and/or specifications without prior notice.

Features
The unique design of the VibraRod level sensor makes it immune to changesin many different application variables including:Vessel contents
Material composition
Density of material
Dielectric constant
Particle size
Moisture content
Pressure and Humidity
Temperature