The Silo Patrol® SMU
SE inventory monitor "smart" sensors can be used
in conjunction with the SiloTrack™ Inventory
Management PC-Based Software or HMI2 operator
interfaces. Communication between the Model SMU SE "smart" sensors
and the SiloTrack software or HMI2 control
console is accomplished via 2-wire RS-485 communication format.
TheWireless
Communication Interface can be used to replace the RS-485
wiring between the "smart" sensors and the PC.
With reliable and affordable technology, theWireless
Communication Interface can be used to lower the cost of
installation and to overcome obstacles that make hardwiring
impractical or impossible.
OPTIMIZED
RELIABILITY
The Wireless
Communication Interface uses proven frequency-hopping spread-spectrum technology,
operating in the 900MHz band, to communicate between your PC running SiloTrack Server
software or HMI2 control console and
individual or groups of SiloPatrol SMU SE "smart" sensors.
The 900MHz band is a FCC license-free band and offers greater transmission
distances, better signal transmission through obstructions and lower signal
loss than other possible frequency bands.
Frequency-hopping spread-spectrum
radio technology utilizes a band of frequencies between 900-928MHz and continuously "hops" or
switches frequencies during radio transmission enhancing reliability and minimizing
disruption of the telecommunications. The spread-spectrum enables a signal
to be transmitted across a frequency band that is much wider than the minimum
bandwidth required by the information signal. This reduces interference and allows for increased data communication.
FLEXIBILITY
TheWireless
Communication Interface can be utilized in numerous applications, even with
multiple sensor networks and over 100 sensors. Each sensor network will require
a wireless transceiver at the PC. A wireless transceiver is also required at
the sensor location. Up to 16 sensors can be connected with one wireless transceiver
pair.
Single
Network/Point-to-Point: One transceiver
is located at the PC and one at a group of sensors
or at a single sensor. If used with a grouping of
sensors located in close proximity, the sensors would
be wired together with the transceiver.
Single
Network/Multiple-Point: One transceiver is located at
the PC and one transceiver at each of multiple groups
of sensors within a single network or one transceiver
at each sensor.
Multiple
Networks/Point-to-Point: One transceiver for each network
of sensors at the PC and one transceiver at each network
group of sensors.
Multiple
Networks/Multiple-Point: One transceiver is located
at the PC for each network and one transceiver at each
of multiple groups of sensors within each network or
one transceiver at each sensor within each network.
Model Selection
TheWireless
Communication Interface has an ENCLOSURE TYPE 4 housing that
is suitable for indoor or outdoor mounting and is provided
with a mounting bracket that be used for mounting on a flat
surface or pipe/railing. Each transceiver includes both
RS-485 and RS-232 interfaces. A choice of antenna is provided
(standard or high gain) along with a choice of power supply
options.
Monitor
Technologies LLC warrants each Wireless
Interface it manufactures to be free from defects in material
and workmanship under normal use and service for two (2)
years from the date of purchase. The purchaser must notify
Monitor of any defects within the warranty period, return
the product intact, and prepay transportation charges. The
obligation of Monitor Technologies LLC under this warranty
is limited to repair or replacement at its factory. This
warranty does not apply to any product which is repaired
or altered outside of Monitor Technologies' factory, or which
has been subject to misuse, negligence, accident, incorrect
wiring by others, or improper installation. Monitor Technologies
LLC reserves the right to change the design and/or specifications
without prior notice.
July 2011
Spotlight: True Fail Safe Level Switch
SafePoint®
"Truly" Fail-Safe Level Switch
The
SafePoint® rotary paddle level switch with a self-validating design
detects material presence plus continuously monitors its own ability
to function. The analysis includes sensor health and system power
failure, which makes the SafePoint truly fail-safe.
The SafePoint incorporates patented use of Hall-Effect technology,
dual outputs to indicate both material presence and unit health,
and microcontroller technology to continuously protect bulk solids
processing and storage from the consequences of unknown sensor
failure by providing immediate indication of a sensor failure
and confirmation of proper operation.
Other practical features of the SafePoint include rugged construction,
motor shut-off when paddle becomes impeded to maximize motor life, twist On/Off
cover for bolt free removal, and local status indicating light (except hazardous
location models)
A practical application for the SafePoint would be to use this "true"
fail-safe product if undetected sensor failure could result in a
catastrophic process problem.
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