IL - Monitor Technologies' DustAlarm® Broken
Bag Detector provides reliable and economical detection
of filter failures in exhaust ducts of baghouses, cartridge
collectors, and other types of dust collection equipment.
in a variety of industries, the Alarm uses
triboelectric technology, which provides uninterrupted dust
monitoring, an alarm output indicating changes in filter
conditions, and an adjustable sensitivity and time delay.
rugged NEMA 4 housing allows for optimal integral electronic
protection and access to adjustments and LEDs.
features of the Alarm include
a fail-safe operation that automatically changes to the alarm
condition if the power applied to the unit should fail. An
optional feature is a quick-disconnect assembly, which simplifies
of the Alarm include
protecting blowers from damage, knowing when to replace dust
collector filters, eliminating unscheduled downtime to replace
filter bags, and reclaiming expensive dusts before they are
released into the atmosphere.
IL - Utilizing excellent sensitivity
and a non-intrusive housing design, Monitor Technologies'
Solids Flow Detector (SFD-2) and Solids Flow Indicator
(SFI) provide a signal indicating the flow/no-flow condition
of solids and powders in gravity chutes, feeders and pneumatic
SFD-2 and SFI use low-power microwaves to sense motion. Microwaves
are virtually unaffected by heat, humidity, ambient light,
pressure, vacuum, high or low temperatures, or dust. This gives
the SFD-2 and SFI with maximum effectiveness in industrial
applications. Both units also carry Hazardous Location Approvals.
non-contact/non-intrusive design ensures long-term reliability
and elimination of process contamination. Intrusive probes
might wear out, break off or inhibit material flow. The ability
to sense through most non-metallic surfaces allows the SFD-2
and SFI to have a non-intrusive flush mounting.
selection of either SFD-2 or the SFI is based upon the type
of output required (relay or analog). With convenient remote
electronics, the SFD-2 provides relay outputs. The SFI has
a variable analog signal relative to the magnitude of flow.
This provides more information for the user than the "on-off" flow
detection of the SFD-2.
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.