The SafePoint is the leader in self-validating bin level indicators. We are pleased to announce the issuance of a patent by the United States Patent Office that covers the use of Hall-Effect sensors as an integral component to ensure reliability of the self-validating techniques contained within the SafePoint bin level indicator. The SafePoint is the only device to use the reliable and safe Hall effect sensor technique to allow the instrument to self-validate its function to ensure safe process operation.
Unlike the simple fail-safe devices that provide limited protection only upon power system failure, the SafePoint bin level indicator's self-validating and patented technology continuously monitors its internal functionality and indicates its safe state to the user of the device. If through damage, electrical failure or component malfunction the sensor is unable to operate properly and output is immediately initiated to indicate such to the user. This safe functioning is in addition to the standard output function indicating the presence / absence of material in the vessel at the point desired to be monitored.
SafePoint bin level indicators are the best choice for safely indicating the level of powder and other bulk solids in bins, silos and tanks. Unlike other brands and devices available, the SafePoint protects the user against overfilling and surprise outages that can occur when a bin level sensor fails to operate properly.
For more information refer to www.monitortech.com or contact Ms. Emily Jones of Monitor Technologies at 1-800-766-6486 (630-365-9403).
SafePoint is a registered trademark of Monitor Technologies LLC.
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.