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Measurements of flow rates for solid materials

Bulk Flow Meter LB 472

The LB 472 DuoSeries Bulk Flow System is a Radiometric Belt Scale, measuring production throughput or mass flow in e.g. t/h. It is mainly used for bulk materials (powders, granulates or chunks). The LB 472 is based on the proven 2-wire technology, succeeding the LB 442 Bulk Flow Meter. The transmitter is operated in combination with LB 4700 Detectors.

User interfaces:

  • Operating Languages: English, German, Chinese, French, Italian, Portuguese, Russian, Korean, Spanish, Finish, Romanian, Serbian, Bulgarian
  • 3,5“ LC color touch display (320x240 pixels)
  • USB mouse / keyboard support
  • On-screen keyboard
  • Ethernet remote control

Power supply:

  • Wide range 100 ... 240 V AC
  • 24 V DC

Environmental conditions:

  • Operating temperature: -20°C ... +50°C

Inputs and outputs:

  • LB 4700 detector interface (Fully compatible to the LB 44xx / 54xx detectors)
  • Master / slave interface
  • RS-485
  • USB & ethernet ports
  • Monitored current output (4-20 mA) with user-defined mapping
  • 1 Error-relay (SPDT)
  • 2 Alarm relays (1x SPDT & 1x SPST) with user-defined mapping
  • 2 Digital inputs with user-defined mapping

Diagnostic functionality:

  • Self-diagnostics according to Namur NE-107
  • Event log
  • Event counter
  • Change log
  • Data log

Software features:

  • Linear, square and cubic calibration
  • Calibration schemes:
    • Comparative weighing
    • Static
    • Average Mass per unit area
  • Direct
  • Calibration adjust
  • Process value and detector temperature alarms
  • Radiation interference detection
  • Source replacement notification
  • Simulation mode for all relevant measurement values

Competitive arguments for LB472:

  • The technology of radiometric belt scale is superior over conventional weighing technologies
  • Berthold product offers better long term stability
  • Only point source arrangement available, however best accuracy and performance is achieved with Co-60 rod source.
  • Temperature variations or other environmental factors have no influence to measurement.
  • Low activity of radiation source – by using high sensitivity detectors.
  • 2 wire technology make possible simultaneous transmission for data and power voltage. By using FSK modulation for data transmission the system has immunity to external interferences.
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