Elburn,
IL - Monitor Technologies' SafePoint® Fail-Safe
Rotary Paddle Bin Level Indicator provides the ultimate
in performance in point level applications. This state-of-the-art
rotary paddle features patent-pending magnetic sensing
technology and a unique housing design making it the
most reliable and technician-friendly sensor of its kind.
SafePoint utilizes
Monitor's magnetic sensing technology to continuously detect
both material presence and operational status. The rotation
of the unit's shaft is monitored by the detection of a
magnetized rotating disk (patent pending). Use of magnetic
sensing techniques eliminates problems that can occur with
the optical systems of other brands. Material sense and
fail-safe outputs are provided on all models.
The
unique housing design features a twist on/off cover, so
there are no more bolts to drop or lose. A local status
indicating light is located on the top of the unit for
ordinary location models. The SafePoint unit
also has two conduit entrances for wiring access.
In
addition, unlike most paddle units, the SafePoint incorporates
a feature that automatically shuts off the motor when the
paddle is impeded. This extends the life of the unit and
minimizes maintenance. The SafePoint is
also available with hazardous location approvals.
Economical
MK-1 Ideal for
Many Point Level Applications
Elburn,
IL - The TrueCap® Model
MK-1 RF capacitance point level sensor provides reliable
and economical point level readings in many applications
including free flowing dry bulk materials and many liquids.
The MK-1's
superior 0.5pF sensitivity is unusually high for such an economical
probe. Unlike other inexpensive RF based products, the MK-1
allows users to easily adjust the sensitivity level for use
in a wide range of applications.
A fail-safe
function is another feature of the MK-1. If a power failure
occurs, the relay drops out into the alarm condition. This
alarm provides additional security against overfilling or emptying
of a vessel due to sensor failure.
The MK-1
requires minimal maintenance making it the most economical
RF sensor in the market. The MK-1, with no moving parts to
wear out or break off during normal operation, and no repair
costs associated with motor burnout and broken or damaged paddles,
can also provide a low-cost transition from mechanical/electromechanical
point level monitors.
Monitor's TrueCap® line
of RF capacitance point level sensors, which also includes
models MK-2 and MK-2e, is designed to provide a high level
of sensitivity, stability, and durability required for powder
and bulk solids applications. All TrueCap sensors
are covered by Monitor's two-year warranty.
The TrueCap® Model MK-2
RF Capacitance point level probe is designed to provide a superior
and stable sensitivity threshold making it suitable for a variety
of powder / bulk solids and some liquid or slurry applications.
Advanced features of the Model MK-2 include: > Automatic immunity to material build-up on
the probe by its driven shield design > Push-button calibration > Enhanced temperature compensation > Maximized reliability via smart sensing algorithms
like “self-validating” fail-safe protection > Visible status LED on ordinary location units > Versatility through a variety of configuration
options including: hazardous location version, split architecture
design, quick-connect process connection, stub probe, cable extensions,
solid extensions, Nylon® probes, Ryton® - equiv. probes,
etc.
A practical application for the TrueCap would be to use this level sensor where
a residual material build-up on a different sensor would cause a false material
level indication.
Principle of Operation for the TrueCap RF Capacitance Level
Probe:
The vessel wall and the active probe element establish an impedance reference
between each other when exposed to air which has a dielectric constant of 1.
When materials with a dielectric constant greater than 1 are in close proximity
to the probe, the impedance of the sensing field between the sensor and the vessel
wall will change. Once the amount of change exceeds a threshold that was electronically
determined during the calibration process, an output relay will either be energized
or de-energized depending upon the position of the fail-safe selector on the
probe’s electronic circuit board. A change of as little as .5 pico-farad
is all that is necessary for the probe to sense the presence of material.