Microwave Non-Contact/Non-Invasive
Solids Flow Detector Indicates Material Flow Problems
Elburn, IL -- The Model SFD-2 and
SFI solids flow detectors use microwave technology
to detect the flow and no-flow condition of powders
and bulk solids as they discharge from bins and silos. The
SFD-2 and SFI can be used in in chutes, pipes and other
conduits that these materials may flow through. The
sensor transmits microwave energy into a flow conduit
and detects the material flow as the energy is reflected
off the material. The transceiver detects a Doppler
shift in the microwave indicate material movement or
flow.
Both units are easily installed and setup. The use of microwave technology
means that the transceiver can be mounted so that it is non-invasive into the
flow stream and even non-contact if mounted on the outside of a non-metallic
window or pipe/chute. The Model SFD-2 provides relay contact closures in
response to change sin flow and no-flow conditions. The Model SFI provides
an analog output. When the SFD/SFI output is monitored, material stoppage
(flow to no-flow) can be detected and flow-aid devices, such as aerators, vibrators
or air cannons, can be initiated.
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!
SiloPatrol® SE Measuring coal powder levels when nothing else will work ….
Coal-fired power plants are commonplace around the
world. In order for these power generating stations to create
huge amounts of electricity the turbines need to be feed with steam
and the steam created by boilers that are fired by … yep,
coal. But coal as it comes from the mining operations is not
what is fed to the burners. First it is ground or pulverized
into powder. It is not unusual for the coal powder to be stored
in silos awaiting the demand for it to be fed to the burners. The
inventory of coal powder in these silos needs to be monitored to
allow for efficient operation of the power plant.
So, how do we monitor the inventory of coal powder in a silo? Not
easily. In one typical application the power plant personnel
found that the only technology that would work reliably is the modern
smart weight & cable system from Monitor Technologies LLC, the
SiloPatrol® SE.
Anhui Tongling power plant in Anhui province in China had tried
almost ever technology possible to get a reliable level measurement
in their 5 coal powder silos. Radar, ultrasonic and others
were tried, but none worked reliably. It wasn’t until
Beijing Conasen walked in and proposed that the Tongling plant use
the SiloPatrol SE smart cable-based inventory monitoring system that
the power plant personnel found a reliable solution.
Mr. William Yuan, sales manager for Beijing Conasen indicates that
the power plant tried many major brands of ultrasonic, radar, and
other technologies but that due to good relations with the Tongling
plant personnel he was able to sell three SiloPatrol SE model SMU
sensors and an HMI operator interface to them. The units were
installed by plant personnel. Because of the heavy amount of
coal dust in the silos an air purge using dry compressed air was
used. The SiloPatrol sensor incorporates the patent-pending
use of Hall-effect sensor technology, a split-compartment enclosure,
microcontroller, redundant optics and many other valuable features
and technology to ensure reliable measurement even in challenging
dust applications like coal powder.
The SiloPatrol SE system has been working reliably and the plant
has since purchased two additional sensors and connected them into
the same HMI operator interface. This same sensor technology
is working reliably at other coal-fired power stations in China as
well.
For more information on the SiloPatrol SE click
here or contact Monitor Technologies LLC at 800-766-6486 in
the USA and 630-365-9403 worldwide.
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