Elburn,
IL - No
more bolts to hold or lose is just one advantage of Monitor
Technologies’ new hassle-free housing for the rotary
paddle bin monitor. The new housing with 2 conduit entrances
improves upon the most reliable, versatile and economical
point level control sensor available for detection of
dry bulk materials.
Unlike
many other available paddle units, Monitor’s
rotary paddle level indicators incorporate a feature
that automatically shuts off the motor of the unit
when the paddle is in a stalled position, which both
extends the life of the motor and minimizes maintenance.
Monitor’s paddle units also have a built-in slip
clutch to protect motor and drive gears from excessive
forces and longer-lasting sealed bearings. Additionally,
the paddle units’ housing is NEMA 4 and an explosion-proof
unit is also available.
Because
different material densities, particle sizes and flow
characteristics require specific paddles for optimum
performance, Monitor Technologies offers a variety
of interchangeable paddle assemblies to fit most bulk
solid application needs. Additionally, Monitor offers
a high-temperature unit and an assortment of process
connections and accessories.
Elburn,
IL - Recently released, Monitor
Technologies' VibraFork™ vibratory
point level sensor for liquids provides reliable sensing
in a wide variety of applications in virtually any industry.
The
vibrating probe principle utilized by the VibraFork overcomes
typical application difficulties associated with changes
in material, electrical dielectric constant, temperature
or humidity. The VibraFork is
easy to setup and requires no calibration. A high excitation
frequency and a unique fork design provide excellent immunity
to external vibration.
The VibraFork line
of sensors has two versions, “Standard” and “Compact.” The “Standard” version
has a traditional instrument housing and provides local indication
using a high-intensity bi-color LED and a relay output.
The “Compact” version
has a compact stainless steel housing with a small local
LED. A choice of outputs, solid state PNP/NPN, 2-wire AC
or intrinsically safe, are also available.
The probe configurations available with either the “Standard” or “Compact” versions
include the standard probe (4.9 in/125 mm), “SHORT” probe (2.7
in/69 mm) or pipe extension probe.
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.
