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Digital (fieldbus) technology

About digital "multibus" mass flow & pressure meters and controllers

Digital = Standard

All mass flow and pressure meters/controllers are equipped with a digital pc-board, featuring self-diagnostics, alarm and counter functions, digital communication and remotely adjustable control settings. These digital instruments from Bronkhorst High-Tech offer great flexibility thanks to the "multibus" concept, whereby the instruments can be equipped with an on-board interface with DeviceNetTM, PROFIBUS DP, Modbus, EtherCAT® or FLOW-BUS protocol.

General specifications

  • based on a 32-bit micro controller with FLASH memory
  • analog input/output: 0...5 Vdc, 0...10 Vdc, 0...20 mA, 4...20 mA (sourcing)
  • valve output can be monitored
  • 2 LED's for status indication
  • 1 multi-functional switch for digital functions
  • rotary switches for selecting the node address and the DeviceNetTM data rate
  • configuration software for operation and service is available (through RS232)
  • best accuracy +/- 0,5% of reading plus +/- 0,1% full scale (based on actual calibration)
  • up to 8 calibration curves
  • Gas MFC's with fast response - settling times down to 150 msec (see graph)
   


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Fieldbus specifications

PROFIBUS

PROFIBUS

Bronkhorst Mass Flow Meters/Controllers can be directly used as PROFIBUS DP slaves. By using the SPC3-Asic of Siemens Baud rates of up to 12 MBaud can be achieved.

PROFINET

PROFINET

The PROFINET protocol is 100% Ethernet-compatible and is used for data exchange between IO-Controllers (PLC, etc.) and IO-Devices (slaves, field devices). It uses the proven communication model and application view of PROFIBUS DP and extends it by Ethernet as the communication medium.

DeviceNet

DeviceNet

The DeviceNet™ interface was developed in accordance with SEMI E54, the standard for sensors and actuators.

Modbus

Modbus

Bronkhorst® Mass Flow Meters/Controllers can be connected to Modbus as a Modbus slave.

Downloads

Modbus manual

EtherCAT

EtherCAT

Bronkhorst Mass Flow and Pressure Meters/Controllers can be supplied as EtherCAT® slave devices. This fieldbus system offers short cycle times with low communication jitter and low hardware costs.

FLOW-BUS

FLOW-BUS

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

Downloads

FLOW-BUS manual

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