The new IN-FLOW Mass Flow Meters are compact, modular instruments for gas flow measurement and control, that can incorporate integrated or close-coupled flow control valves, in fieldbus systems

Bronkhorst High-Tech manufactures the largest variety of thermal Mass Flow Meters and controllers for gases and liquids available on the market. The new In-Flow Series of mass flow meters are compact, modular instruments of rugged design according IP65 (dust and waterproof). They can be combined with control valves, either integrated or close-coupled, whereby gas flows are measured and controlled within the overall range of 0.2 mln/min up to 11000 m3n/h air equivalent.

The instruments are ATEX approved for use in Category 3, Zone 2 hazardous areas.

Bronkhorst High-Tech have developed their latest digital mass flow meters/controllers by following the 'multi-bus' principle.

The basic pc-board on the instrument contains all of the general functions needed for measurement and control, including alarm, totalisation and diagnostic functions.

It has analogue I/O-signals and also an RS232 connection as a standard feature.

In addition to this there is the possibility of integrating an interface board with DeviceNet, Profibus-DP, Modbus or Flow-Bus protocol.

The latter is a fieldbus specifically designed by Bronkhorst High-Tech for their mass flow metering and control solutions, and as a result of which they now have over 15 years of experience with digital communication.

Applications can be found in process control systems as for example in food, chemical and petrochemical plants.