Cost-Effective
Level or Backed-Up Conveyor Chute Indication for Powder
and Bulk Solids...Including Abrasive Dry Materials
Hycar® cover
option for diaphragm switch
Elburn, IL -- A diaphragm-style
level switch is a reliable and cost-effective way to
detect levels of powder and bulk solids in storage
bins, silos and other vessels. Especially in tight
spaces. In addition to level indication, the diaphragm
switch can be used to detect plugged or backed-up conveyor
chutes. For example, there are several companies that
install Monitor Technologies' Binatrol® Model G/GX
series of diaphragm switches with the optional Hycar® covers
to be used as alarms for backed-up conveyors of powder
or pulverized coal chutes that provide feedstock to
boilers.
The Hycar® (rubber nitrile) optional cover is designed
to provide the Binatrol® Model G/GX series diaphragm
bin level switch with additional durability for use
with more abrasive dry materials like powder or pulverized
coal and more.
These diaphragm-style level switches are surface mounted,
minimally intrusive units that make them ideal for
vessels or chutes limited in size or internal clearance.
Also, the diaphragm switch requires no input power.
About Monitor
Monitor Technologies, LLC provides practical solutions
for level measurement instrumentation, solids flow
indicators, particle emission monitors and bin aeration
devices relating to the storage and processing of powders,
bulk solids and some liquids. For more details on Monitor's
product offerings please visit www.monitortech.com
or call 1-630-365-9403.
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.
