SiloPatrol® Level Sensor with New Wireless
Elburn, IL – Monitor Technologies’ has recently introduced advances to the SiloPatrol® plumb bob style continuous level sensors that provide even easier set-up and increased flexibility for control system integration. Enhancements include wireless Bluetooth® for simple, intuitive set-up without removing the sensor cover and Modbus(TM) connectivity to communicate with Modbus-compatible control systems. In addition, there are a widened array of programmable features such as cable cycle distance limit, auto timer and relay output for high or low distance threshold setting, error indication or cycle operate.
The SiloPatrol plumb bob unit combines Hall Effect sensor technology, sealed bi-directional optical sensing, a split-compartment enclosure, isolated outputs and other features to produce a reliable level measuring system designed for the harshest conditions. In addition, the SiloPatrol automates inventory management by use of the SiloTrack(TM) software or a variety of operator interface devices like the HMI2.
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,
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.