SMART Fieldbus communication | Bronkhorst

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Bronkhorst instruments are used for numerous applications in many different markets. In this section you will find an overview of the main markets for our equipment, illustrated with some typical examples of applications.

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Are you looking for technical documentation, are you interested to learn more about the measuring principles of Bronkhorst products, or you do want to get in contact with a Bronkhorst Service Engineer? This section will guide you to the relevant service & support topics.
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Bronkhorst UK is leader in Mass Flow Meter / Mass Flow Controller technology for gases and liquids, Pressure Controllers and Evaporation Systems.
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Datasheet FLOW-BUS communication with Bronkhorst FlowSuite

What is FLOW-BUS?

FLOW-BUS is a fieldbus designed by Bronkhorst; based on RS485 technology for digital communication between multiple digital devices. This communication protocol offers the possibility of host-control by PC.

Learn more about FLOW-BUS

What is Bronkhorst FlowSuite?

Bronkhorst FlowSuite is a Windows PC application for monitoring and service purposes on Bronkhorst digital instruments via a single interface or with multiple windows for multiple devices. It offers good insight into the dynamic behaviour of our flow meters and controllers.

Read more about Bronkhorst FlowSuite

Bronkhorst instruments are equipped with a micro-controller for exchanging parameter value information with other instruments / devices connected to the same FLOW-BUS system and/or via RS232 to a PC.

Here are some examples how you can install Bronkhorst instruments correctly using FLOW-BUS with Bronkhorst FlowSuite:

Bronkhorst instruments are connected via FLOW-BUS, RS485 (red cables).
PC USB port connects via RS232 to the first device (green cable).
Bronkhorst FlowSuite™ displays the PV (Process Variables), controls the SP (Setpoint), generating up to 4 graphs. The amount of devices which can be logged depends on your hardware.
Standard RJ45 Shielded (F)TP patch cable or M12 cable supplies the FLOW-BUS signal and 24 Vdc power.
1A @ 24Vdc or 24 Watts is the max power for RJ45 Shielded (F)TP patch cable, 4A for the M12 cables.

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Example: Vapour (CEM) System

Vapour System with E-8000 power supply

Bronkhorst Vapour System with 24 Vdc power supply

Example: mini CORI-FLOW Coriolis flow meter

Coriolis flow meter with Power Supply

Bronkhorst mini CORI-FLOW flow meter with 24 Vdc Power Supply

Example: EL-FLOW Prestige thermal flow meter

EL-FLOW Prestige flow meter with Power Supply

Bronkhorst EL-FLOW Prestige flow meter with 24 Vdc Power Supply

Other considerations:

FLOW-BUS and Modbus is a LINE topology serial communication protocol over RS485. Each instrument must be “daisy chained” one after another with begin and end resistors.

Max cable length from Multiport Adapter to Device is 0.5m (20”)
LINE Topology
STAR Topology = FORBIDDEN
Is not like a PoE Ethernet Switch and not to be connect like an Ethernet switch.

www.bronkhorst.com

Bronkhorst High-Tech designs and manufactures innovative instruments and subsystems for low-flow measurement and control for use in laboratories, machinery and industry. Driven by a strong sense of sustainability and with many years of experience, we offer an extensive range of (mass) flow meters and controllers for gases and liquids, based on thermal, Coriolis and ultrasonic measuring principles. Our global sales and service network provides local support in more than 40 countries. Discover Bronkhorst®!