Belt Weighers

COMPONEN AND STANDARD PRODUCTS

Mechanics

Belt Weighers

- MULTIBELT Single-idler Belt Weighers

• Continuous bulk solids measurement in belt conveyor systems

• Suitable for flow rates up to15,000 t/hr

• Accuracy up to ± 0.5 %

• Also legal-for-trade-version

• Simple and quick installation

• Type BEM – designed modularly, suitablefor any belt width

• Types BEP/BED – weighing platforms,suitable for IEC belt widths

• Suitable for use in ATEXexplosion-zones

Application
Single-Idler Belt Weighers are used forcontinuous acquisition of flow ratesand totalized amounts. They are especially designed for integration into continuously operating belt conveyors enabling accu-racies of up to ± 0.5% tobe achieved. They can be employed for a whole variety of tasks:

• Throughput and consumption measurement in production plants
• Accountability of stored and retrieved amounts
• Load limit alarm
• Batching, in load-out stations
• Legal-for-trade weighing
• Prefeeder control.

Their rugged design ensures a highdegree of reliability and availability. We have the right Belt Weigher for
every Belt Conveyor.

Construction
The standard single-idler belt weigher comprises:

• Weighing module or platform for accommodating user´s idler set
• Overload-protected load cell(s)with high degree of protection
• Cable junction box for connection of sensors, and
• All fixing elements required for mounting.

For speed measurement, various speed transducers e.g. friction wheel tachometers, are available as options.

Operating Principle
Belt Weighers are used to measure continuous material flows of varying amounts.

Load cells acquire the weight of load on particular belt sections. A speed transducer measures the belt speed.

The product of these two variables is the current flow rate. Integration of flow rate determines the totalized amount of material.

If belt weighers are not equipped with speed measurement system, belt speed is not acquired. In the secases, weighing electronics use the constant speed value set by parameter.

However, this method can adversely affect the accuracy.

Dimensions(mm)

Dimensions [mm]

Accuracy
Specified accuracies refer either to nominal (maximum) flow rate or to the corresponding actual flow rate in the range of 20 to - 100 %.

Specified accuracies assume that the variant is installed in a suitable belt conveyor and that the measuring station is installed and calibrated in accordance with our installation and calibration instructions.

For optimum planning-in of your belt weigher(s), see  ‘Recommendations for ensure proper functioning and high accuracy'.

Special Requirements
Should you have specialrequirements, e.g.
- Legal-for-trade variants
- Belt speed out of specified range
- Meter for varying belt angle
- Prefeeder control
- Flow rates exceeding 15,000 t/hr
- Higher accuracies
- Special belt widths
- Special belt conveyors,
please let us know.

Ordering Data
For us to be able to handle your order smoothly and quickly, please let us have the data below in addition to the ordering number:
- Belt width [mm]
- Flow rate [t/h]
- Belt rise [°]
- Belt speed [m/s]
- Accuracy [%]
- Nominal flow rate ( )
- Actual flow rate ( )

If you have any duty about belt weigher or belt scale, please contact us