Low cost, accurate, integrated indoor control and ..... you can install it yourself!

NEW - SEE SILO WEIGHTS THROUGHOUT YOUR OFFICE COMPUTER SYSTEM OR ON THE INTERNET

SiloWeigh tells you the contents of your silo or vessel - not as an empty or full signal, or even a percentage full signal based on a level measurement. SiloWeigh measures the actual weight of the silo and contents to give a true picture of the amount on hand - and it costs little more than a level sensor.

NEW-Two types of sensor:

Choice of either WELDABLE or Silex BOLT-ON strain gauge sensors (shown at left), which attach directly to the silo legs, eliminating the need to lift the vessel onto load cells and making it easy to install.  Both types of sensor use high quality foil strain gauges, as used in high-accuracy load cells, to give superior stability and accuracy.  SiloWeigh is temperature compensated by matching the sensors to the metal of the legs. We have demonstrated typical accuracies of 1 to 2% when all four legs are gauged.  It is possible to gauge only half the legs but we do not recommend it since wide variations in accuracy are possible. You can also mount the legs on Load Cells for high accuracy (0.1%) (see bottom of page).

All-weather. All components are carefully weatherproofed and you can set up the display system in a convenient indoor location.

Digital bar-graph indicator for each vessel shows both weight of contents and level in vessel, calibrated in either English or metric tons.

  Download SiloWeigh brochure (302K)    Brochure en Francais (300K)   
  Download SiloWeigh.Net brochure (505K)   

Two types of display:

SiloWeigh BAR GRAPH- the display cabinet can house up to five bar-graph indicators to display up to five vessels at the same time - see picture above right. 

SiloWeigh.Net, the NEW network version, with computer display.  The SiloWeigh.Net processor is a web server, allowing Internet pages to be generated and viewed (through an Internet browser such as Internet Explorer) on computers throughout the local network.  You see all your vessels shown as level gauges, plus the actual weight in tons - see picture at right.  In addition, four types of alarm are displayed to warn of impending problems - see the yellow 'Reorder' alarm and red 'Almost Empty' alarm.  Setup and calibration is done through similar screens, password protected for security.

Optional digital outputs on both models can be wired to alarm lights and bells, while SiloWeigh.Net can also accept inputs from overpressure sensors to warn of impending dust collector problems.

In addition to the silo display, the SiloWeigh.Net data can be used in your own company database or stored on the SiloWeigh.Net database, allowing your company to centralize data for all silos and all plants.  View a demo by clicking  www.siloweigh.net.

View SiloWeigh slide show

View SiloWeigh.Net slide show

Yes, we do divided silos.  Most companies cannot handle silos that are divided to store two separate materials.  Regardless of the position of the partition, SiloWeigh.Net uses all four legs signals to compute the weight in each side.  It's just as easy to install, just as easy to calibrate.

Important features and benefits:

SILOWEIGH	SILOWEIGH.NET
Bar-graph indicators in wall-mount cabinet, local viewing.	Bar-graph display on network computers, company-wide viewing.
Shows both level in silo and actual weight in tons.	Shows both level in silo and actual weight in tons.
Up to 5 vessels per system.	Up to 8 vessels per system, 4 standard vessels and one divided, or 2 divided.
Optional 4 programmable relay alarm setpoints per vessel, based on weight values, to power alarm lights or bells. These also have LED indicators on each bar graph.	Silo symbols change color as warning.  Optional 5 programmable relay alarm setpoints per vessel, based on weight or usage rate, can be directed to up to 24 relay outputs.  Up to 8 inputs can accept alarm cancel button or overpressure switches to prevent baghouse blowout.
Optional analog output for each vessel connects to PLCs and computer control systems.	Analog output option will be added at some time in the future - not currently available.
Calibration, setup and service by phone, company rep. or local electrician.	Calibration, setup and service locally, by phone, company rep. or through Internet.
Readout shows current values only - no history.	Standard on all systems, connection to SiloWeigh.Net database server via Internet stores all data and alarms for viewing through Internet.
	Local data storage for up to one month ensures no data lost if communication is down.
	Trend graphs for choice of vessels and time period, together with alarms, via Internet, give valuable history and predict future usage.
	Optional Internet connection to company database or ERP system to order supplies or dispatch trucks automatically.
	Internet database can be customized to individual requirements for ordering, etc.
	Internet database allows identification of unscheduled refills (by competitive suppliers etc.).

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SiloWeigh and SiloWeigh.Net can display the weight of contents in practically any vessel.  Examples are:  cement, sand, aggregates, flour, grains such as corn, rice, wheat, oats, barley, mineral ores, coal, coke, chemicals, plastics, even liquids and liquefied gases.  The easiest application is on H-beam legs, but "O" (round) section, square, "L" and "S" sections have been gauged successfully, as well as skirted silos.  The only limitation is the available stress in the leg.  The stress can be calculated by measuring the cross sectional area of the leg and dividing the maximum "live load" in the leg by the area.  The calculated stress should be at least 1500 lb/sq.inch (105 kg/sq.cm).  Example: a vessel holds 100 tons (200,000 lb) of cement and has 4 legs, each with a cross section of 12 square inches.  Each leg will carry a maximum live load of 200,000/4 = 50,000 lb.  Dividing this by 12 gives 4166 lb/sq.in, which is safely above the limit of 1500.  Note that legs that are designed for greater safety margins will have less stress and will have a lower electrical output as a result.  The lower output will increase the drift in readings due to temperature changes and side loads.

The power of the SiloWeigh.Net system is the ongoing connection to the SiloWeigh.Net database server.  The client’s company database is accessible by any web browser (via passwords to ensure total security), enabling the client (cement, concrete or similar company) to see all customers’ silo levels and dispatch deliveries accordingly.  End users can see their own silos’ status and order directly on-line.  

Scale-Tron’s web based database – The SiloWeigh.Net database is housed on a commercial server with professional maintenance and backup service to ensure your data is never lost, is secure from hacker attack and is available to you all the time, any time, 24 hours a day, 7 days per week.  Whether you choose to link the SiloWeigh.Net database to your own company database or use SiloWeigh.Net’s services for all your needs, the SiloWeigh.Net server is your source for silo data.  The single database is subdivided among all SiloWeigh.Net’s clients, each having its own passwords for access.
In your company’s area, you have the ability to store data for your own customer companies, divisions and plants or sites.  Each plant/site holds data for all its vessels, which can be displayed individually or as groups holding the same product.  The data can be displayed directly as tables of data as it is received, or sorted by company, site, time and date etc.  It can also be displayed in graphical form for each site, as a trend graph which can be zoomed to any time and date period. In addition to the weight data, the database holds a record of each alarm condition encountered, with time and date.
Any or all the data is accessible by a remote database server, using TCP/IP protocol, enabling it to be combined with private company data on customers, products and orders.  This allows clients to organize dispatching of deliveries or sales. Individual client areas can be customized with additional data and reports etc.  Contact us for more details. Graph at right is actual data from our test site - a working concrete plant in Canada.
	Here's an example of the automatic ordering process, taken live from the cement company's web site.  The  level at the customer's silo has reached the reorder value and triggered this order from the cement supplier.  Once set up and verified, the process can proceed without any further manual intervention. Emergency low or high levels can also be made to send Emails or SMS messages to cell phones.

See how it's done - with close up photographs

View SiloWeigh slide show

View SiloWeigh.Net slide show

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