hydrostatic level sensor

Silo, tank and feed bin weighing with Internet access

Designed for use on up to 32 vessels per location, where both local and /or cloud based remote access is required.  Multiple locations can be grouped together on a single web browser allowing companies to monitor and order material from a single location.

SiloWeigh.Net pairs the L-Strain or Silex sensors with our software and your local network and/or the cloud. The cloud-based database displays all the company’s vessels through a web browser accessible via username and password from any PC, Tablet or smartphone. Customizable Visual warning at Reorder and Low levels points, plus audible warning if you need it, to prevent loss of production and missed deliveries. Ability to check every delivery, even weeks ago, against the delivery ticket. 

SiloWeigh.net is perfect for feed bin weighing, silo or tank inventory measurement; any legged or skirted storage vessel in fact.  SiloWeigh.net measures the actual weight of the vessel and contents or uses a liquid hydrostatic level sensor to give a true picture of the amount on hand.

The accurate inventory system for silos, bins, tanks and storage vessels that you can install yourself
  • Never run out of material again – Visual warning at Reorder and Low levels, plus audible warning if you need it, to prevent loss of production and missed deliveries.

  • Eliminate the risk of overfilling – Blown filters and the ensuing environmental hazards are a thing of the past.

  • Identify and stop delivery shortages – Ability to check deliveries, against the delivery ticket. 

SiloWeigh is the perfect solution for accurate inventory monitoring of legged or skirted silos, bins or tanks. It is better than  level measurement, as SiloWeigh measures the actual weight of the vessel and its contents.

SiloWeigh.Net silo inventory system in use at Baker-Hughes, California
Embedded PC
  • SiloWeigh.Net is self-contained, with all the software installed and set up for your application, ready for “Plug-and-Play”, connection to the local network and SiloWeigh.Net’s cloud server.

  • Request the optional 15″ TFT color touch-screen on the front panel to  turn it into a full-featured system with local display.  It also has connection to the local network and the Internet when desired.

  • SiloWeigh’s sensors are temperature compensated; they cancel the effects of the structure’s expansion with temperature while measuring the compression due to load.  Typical accuracy ±2% of full scale when all four legs are gauged. Skirted silos – expect ±5% of full scale:

  • Mount the legs on Load Cells for higher accuracy (0.1%)

  • All-weather. Sensors, wiring and junction boxes meet NEMA-4, IP66 and you can set up the dust and splashproof industrial touch screen display system in a convenient indoor location.

  • No moving parts for long life and reliability.

  • History trend graphs for any silo/tank/vessel in the company.

  • In-plant hard wired programmable alarms.

  • Software alarm log at plant and company level.

  • Email alerts and refill order generation.

  • Combine solids silos and liquid tanks/vessels by use of our liquid level sensors.

  • Because digital transmission retains full accuracy and reduces wiring, you can run a single cable to all storage vessels.

  • Unlimited number of silos/vessels, groups and locations.

  • The only vessel inventory system (along with Siloweigh II Pro) that handles unequal divided silos.

  • Connect all 4 sensors separately.  Diagnostic display pinpoints faults and allows you to bypasses them until you can carry out a full inspection.


Silo Capacity and stress:

All silo capacities can be measured. The limitation is the stress in the support structure. Acceptable stress is in the range 1500 to 15,000 lb per square inch.

Material type:

All types of steel, stainless steel and aluminum. 

Number of sensors/vessels: 

Up to 50 sensors or 32 vessels can be powered from each SiloWeigh.net DAQ cabinet. 

DAQ display method: 

DAQ acts as a web server to computers on local network. 

Display accuracy and resolution: 

24 bit converter, capable of display in far greater resolution than required. 

Overall system accuracy: 

Dependent on structure being measured. Typically ±2% of full scale value for legged silos and ±5% for skirted silos 

Connection method: 

Cable or radio links between vessels and DAQ or from DAQ to computer network. 

Digital set point relays: 

8 to 24 Opto-22 relays settable to any value, close on rising or falling values. 2 inputs are Audible Alarm Cancel and Master Cancel, other inputs available to create custom message. 


110-250V AC, 50 W max or 24VDC. Solar power also available. 

Temperature range: 

Sensors: -40 to +70°C (-40 to +160°F). Display: 0-50°C (32-120°F). 

Local display: 

Bar-graph/trend graph display from local database, showing all silos at one location. 

Embedded PC:  

64 GB flash drive, 4 GB RAM, software pre-loaded and configured, Windows 10, embedded version, NEMA-4 enclosure.  

Connection to local network and Internet: 

Ethernet to local network and/or direct to Cloud server. 

Touch screen built-in display: 

15" color XGA touch screen, NEMA-4 rated, in embedded computer cabinet. 

Local GUI: 

Separate apps for setup and calibration plus browser based display of silo bar-graph, trend graphs and DAQ parameters. 

Internet display: 

Bar-graph/trend graph display from central database, includes all vessels at all locations (32 max). 

Internet alerts: 

Programmable Email and SMS text alerts on chosen alarms.