Notes
Outline
SILOWEIGH
Gives accurate inventory at low cost
Shows level at a glance
Up to 5 silos in one unit, separate bar-graphs for each silo
Self-install kit, anyone can do it
Interfaces with BatchTron and RediLink, automates ordering process
Typical accuracy 2% of full scale
Ready-Mix plant application
Ready-Mix plant application
Handles all the vessels in a single location
Can gauge 2 or 4 legs depending on desired accuracy – 2% accuracy with 4 legs, 5% with 2 legs.  You can even add the missing legs later to increase the accuracy.
PRINCIPLE OF OPERATION
Weldable strain gauges on front and back of leg
More accurate, less costly than bolt-on sensors (Kistler Morse etc.)
Can use 2 or 4 legs
OK for 6 or more legs
H-beam, O-beam, L-beam or square section legs
Must have at least 1500 psi stress in leg
Minimize temperature changes for best accuracy
HOW IT’S DONE
Choose the location on leg
Grind surface until smooth
Drill cover mounting holes
Weld gauges to leg
Test gauges and connect
All gauges daisy-chained from leg to leg and to bar graph indicator
Seal gauges and fit cover
Seal cover
Test and calibrate
Kit contains all materials
ADVANTAGES OVER OTHERS
Strain gauges are more accurate because they are applied to both sides of leg, cancelling heat-induced stress
Installation is not physically demanding – anyone with a steady hand can do it
Bar-graph display is easiest to read and use
Buy only the features and accuracy you need
INDICATOR FEATURES
Bar graph and digital display reads in tons and tenths
Optional 4 setpoint relays for alarm indication
Optional isolated 4-20mA or 0-10 volt analog output
Up to 5 indicators in same SiloWeigh cabinet
Simple programming/calibration
Plug-in boards make replacement easy
Does not need empty vessel for calibration
ALTERNATIVE INDICATORS
Analog transmitter in place of bar-graph will interface with batching controllers, PLCs
Digital transmitters also available
Do not use weight indicators that display in lb or kg. This is too fine – normal drift appears much worse with small graduations
IMPROVEMENTS
Calibration “block” on input changes less than 1.3 mV removed in 2003, allowing 1-truck calibration on all silo sizes
Interface to BatchTron/RediLink
Updated manual available online
New model SiloWeigh.Net displays silos on PC computers in local network
Internet database stores silo data for whole company, allowing automatic reordering and truck fleet management
OTHER APPLICATIONS
Grain – corn, wheat, rice etc.
Animal feed mills
Breweries
Bakeries and food
Plastics, chemicals
Liquid tanks
Mines, refining
Asphalt storage
Instead of vertical legs, use cross beams in interconnected frames (consult us)
Do not use for trade
Do not use for batching, bag filling or truck loading – not enough accuracy
OPPORTUNITIES
   Across the world, SiloWeigh has a unique niche in the market.  It has the highest accuracy at a modest cost; lower than load cells.  This plant in Korea is a typical example. All concrete plants in Korea use some type of silo indicator. Our dealer, Taeshin, makes concrete plants. These new silos are 500, 200 and 300 metric tons, fitted with SiloWeigh.
FOR MORE INFORMATION:
Scale-Tron Inc., Montreal
www.scaletron.com
www.siloweigh.net
scaletron@scaletron.com
1 800 632 7083
J. McCoy Equipment Ltd.
Port Perry, Ontario
www.jmccoyequipment.com
john@jmccoyequipment.com
905-985-0989
Thank you for participating