SBS (Smart Belt Scale)

Conveyor belt scale

Smart Belt Scale
Logo de la marque Hasler

Function :
The Smart Belt Scale is a conveyor belt scale specially designed for rugged outdoor environments such as quarries, gravel processing and mining. It is also well suited for any manufacturing process using conveyor belts, including: cement, fertilizer, chemical, tobacco, agro-food, etc… It is designed for easy installation which can be done by the customer’s own maintenance staff.

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  • Weighing
  • Flowrate calculation
  • Totalization
  • Dosing of all materials conveyed on a belt conveyor
Technical sheet

Customer benefits

  • Accuracy : ± 0,2-0,5 %
  • Discharge totalization
  • No field calibration ever required (with digital load cells)
  • Easy installation thanks to the state-of-the-art mechanical design
  • High performances


  • A single model adapts to all conveyor types and a wide range of widths.
  • Easy alignment of the weighbridge.
  • No special tooling required.
  • Totally prewired with cables and connectors supplied for error-free installation.
  • All operational parameters are pass word protected with 2 levels of security (hardware and software).

Entirely modular construction (height and width)


Smart Belt Scale, Single, Twin and Double (Multi-Station):

Depending on the application (high belt speed and / or flow rate), up to four single idler SBS can be combined to be used as a multi idlers beltscale.The SBS are connected to the same controller. Only one speed sensor is required, either a friction wheel speed pick-up or an incremental encoder mounted on the return drum.


The Smart Belt Scale is connected to a BFC electronic controller - panel or wall version - having the following interfaces:


  • 3 Configurable isolated digital outputs with programable thresholds: totalizer, alarm, horn
  • 1 Configurable isolated 0/4-20 mA analog output for either: flowrate, current weight, speed, load per meter
  • 2 Configurable isolated digital inputs: out of range acknowledgement, totalizer reset.

Data Links

Isolated serial communication :

  • Modbus, Ethernet ModbusTCP, Profibus DP - for connection with a PLC or host computer.

Dimensions and weight

Type Station height
Distance between girders
Belt width approx.Weight of mechanics
Weight of electronics
Total weight packed
SBS 2H-145 mm390 - 500 mm200 - 350 mm34 kg3.4 kg54 kg
L75144 mm
SBS 3H-145 mm500 - 600 mm350 -450 mm38 kg3.4 kg58 kg
L75144 mm
SBS 4H-145 mm600 - 800 mm450 - 650 mm42 kg3.4 kg62 kg
L75144 mm
SBS 5H-145 mm800 - 1000 mm650 -850 mm50 kg3.4 kg70 kg
L75144 mm
SBS 6H-145 mm1000 - 1300 mm850 - 1150 mm60 kg3.4 kg80 kg
L75144 mm
SBS 7H-145 mm1300 - 1600 mm1050 - 1350 mm70 kg3.4 kg90 kg
L75144 mm
SBS 7 TWINH-145 mm1400 - 1600 mm1050 - 1350 mm75 kg3.4 kg120 kg
L75144 mm
SBS 8 TWINH-145 mm1600 - 1900 mm1350 - 1650 mm82 kg3.4 kg128 kg
L75144 mm
SBS 9 TWINH-145 mm1900 -2200 mm1650 - 1950 mm97 kg3.4 kg145 kg
L75144 mm
SBS 10 TWINH-145 mm2200 - 2500 mm1950 - 2250 mm102 kg3.4 kg160 kg
L75144 mm

The weighing station

Customer benefits

Accuracy : 0,25-0,5 % (if installed in an approved conveyor in accordance with the manufacturer’s specifications)
Temperature range : - 25°C to + 60°C (- 13°F to +140°F)
Protection class : IP 65, NEMA 4
Belt speed : standard : 0.05 to 3 m/s
Flowrate : up to 2500 t/h
Belt inclination : material should not tumble backwards, max. acceptable slope ≤ 20°
Max. trough angle : ≤ 45°
Load cell : 100 % digital Smart Force Transducer (SFT version ≥ M) or analog load cell
Standard colour : RAL 5000 (blue)


  • Heating device for temp. as low as -45°C (-49°F)
  • Fertilizer version with special anti corrosion surface treatment and protection of terminal box and screw terminals
  • Ex protection version