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FLOW-BUS is a fieldbus, designed by Bronkhorst, based on RS485 technology, for digital communication between digital devices, offering the possibility of host-control by PC.


  • Baud rate fixed on 187,5 kBaud
  • +15...+24 Vdc supply voltage
  • easy installation and communication with other Bronkhorst equipment
  • automatic node search
  • automatic bus optimization (gap fixing)
  • PC-communication through RS232 via local-host function or stand-alone interface
  • option: galvanic isolation up to 500 V (for data lines)
  • connection of max. 120 instruments to 1 bus
  • max. bus length: 600 metres


flowbus system example1

Example of an instrument with FLOW-BUS interface
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