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III. PRODUCT DESCRIPTION
FUNCTION
The VRF
II Series is a point level sensor used to detect the presence or absence of material at a point inside
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a tank, bin, or other vessel. Material coming in contact with the unit's probe causes its output relay to change
state, thereby indicating the presence of material.
Operation of the VRF II Series is based upon the Bindicator
in the impedance of the unit's probe with respect to the ground. At the heart of the unit is a network analyzer
with a built in DSP (Digital Signal Processor) that continuously monitors the probe's impedance (capacitance,
resistance, and inductance) with respect to ground. When there is a large enough change in the impedance, the
status of the output relay changes to indicate the presence or absence of the material.
APPLICATIONS
This model is ideal for the point level detection of dry bulk materials, liquids, and slurries. It is not appropriate for
conductive materials that will coat, or build up on the probe. It is ideal in the measurement of materials with a
dielectric constant as low as 1.2. Moisture content and bulk density also factor into the unit's ability to sense low
dielectric materials. Call the manufacturer Applications Department with questions.
FEATURES
Multiple mounting configurations and probes are available to suit almost any application
Universal input power; AC or DC (see specifications for input ranges)
Pro-Guard
probe design
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Automatic calibration EZ-CAL™ II
Adjustable time delay
Selectable fail-safe operation (high or low level)
Adjustable Sensitivity
VRF180913 Rev. A
Opti-Sense™ technology to measure changes
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www.bindicator.com
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