Bulk Flow Measurement

 

The radiometric belt scales from Berthold are used to measure flow rates and throughput on all kinds of conveying systems. The major advantage of our radiometric weighing systems is that the measurement performance is very stable over years of operation with repeatability of ±1%. Thus frequent recalibrations are not required. Due to the non-contacting nature and the lack of moving parts, encrustations, dirt, wind or changing belt tension don’t affect the bulk flow measurement. 

The Berthold weighing systems can be easily retrofitted on existing conveyors without modification or process downtime. Measurement is carried out on

  •          Belt conveyors
  •          Screw conveyors
  •          Drag chain conveyors
  •          Vibrating conveyors

Besides current flow rate the systems also provide total solids mass (tonnage) and batch measurements. Applications of Berthold belt scales are found in all different bulk handling industries from mining to the building materials industry, from chemical plants and power plants to the pulp & paper industry. Customers benefit from improved control in mixing processes, compliance to delivery contracts and optimal utilization of loading capacities. Worldwide there are more than 2000 systems successfully in operation.

Measuring Principle

Based on the radiometric principle, our bulk flow meters are highly robust and can be operated in the most demanding and hostile of process conditions.

The radiometric belt weigher works non-contacting, with a scintillation detector installed beneath and a shielded source mounted above the conveying system. Radiation is directed through the measurement point and attenuated as it passes through the conveyor. The extent to which it is attenuated depends on the conveyor load.

When combining the measured conveyor load with a velocity signal, the mass flow rate can be determined very accurately and without any influence of dust, temperature, vibrations, varying particle sizes or chemical properties of the measured material.

Beside the typical measuring arrangement with point source and rod detector, we can also work with rod sources, which are particularly used when highest accuracies are required. Thus allowing us to achieve optimum measuring results for each single application. 

Benefits at a Glance

  • Non-contacting
  • High accuracy and reliability
  • Maintenance-free operation
  • The system's components are not subject to any wear and tear
  • Easy to install on existing conveyors


Our Product for Bulk Flow Measurement

Bulk Flow Transmitter DuoSeries LB 472

Bulk Flow Transmitter DuoSeries LB 472
Belt weigher system for the precise mass flow determination of solid matter on all kinds of conveyor systems.