Guided Wave Radar Level Sensor
Now Offers ATEX and CSA Approvals for Hazardous Locations
IL –Monitor Technologies LLC announces
the availability of ATEX and CSA certifications
for it's Flexar(TM) guided wave radar continuous
level measurement product line. The ATEX certification
is Ex II 1/2 GD T75 ... 150C. CSA certification
includes Class I, Division 1 & 2, Group B,
C and D as well as Class II, Division 1 & 2,
Groups E, F and G. CSA certifications apply to
both Canada and the USA. These approvals allow
the benefits of guided wave radar technology to
be extended to areas where hazardous and explosive
vapors and dust exist worldwide.
Flexar(TM) guided wave radar product is a continuous level measurement device
using TDR (time domain reflectometry) principles where radar pulses area focused
to the material surface by the unit's wave guide (typically a heavy duty cable
or rod) and the time-of-flight of the pulse reflection back to the instrument
electronics is directly related to the empty distance in the vessel and the material
Guided wave radar technology has proven successful and the best choice for virtually
all powder and bulk solids application as well as a multitude of liquids applications.
Monitor Technologies uniquely combines this proven level measurement technology
with five decades of expertise in powder and bulk solids level measurement along
with the industry leading PC-based inventory management software package.
Monitor Technologies LLC is a leading supplier of level, flow, particle emission
and aeration instrumentation for the worldwide powder and bulk solids market.
The experience and market knowledge gained over five decades has earned Monitor
a reputation for providing high quality and reliable product solutions. Monitor
is located in Elburn Illinois, give us a call today and let us put our creative
solutions to work for you!
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,
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
Principle of Operation for the TrueCap RF Capacitance Level
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.