Bürkert have launched a new generation of high-precision mass flow meters (MFM) and controllers (MFC) for gases. They were designed with maintenance and easy integration in mind, by incorporating an ethernet switch and compatibility with the free “Bürkert Communicator” software as standard allows the devices to be virtually plug and play.
Broad measurement and control range
The two versions (Type 8741 (8741 Datasheet) and 8745 (8745 Datasheet)) cover high and low pressures as well as low and high flow rates. The Type 8741 flow meters and controllers handle nominal flow rates of up to 150 lN/min*, while the Type 8745 devices permit a maximum of 2,500 lN/min*.
Thanks to their wide measuring range, the same MFC/MFM devices can often be used at different locations within an application, reducing the number of device versions and one configuration tool. The Bürkert Communicator software simplifies device access, diagnostics and parametrization (screenshot below). This enables OEMs in particular to use a single product in solutions for customers with different control systems.
The mass flow controllers employ direct-acting proportional valves. Type 8745 can also be combined with a Type 3280 or 3285 motor-driven valve for high-pressure applications of up to 22 bar. Valve orifices up to DN20 are available for applications with high flow rates, even at low differential pressures such as those found in burner control systems.
Precise control
The sensors used in both types offer a high degree of measurement accuracy and excellent repeatability. Since the sensors measure directly in the gas flow, the MFC/MFM devices have extremely short reaction times, giving them exact measurement and control capabilities. The thermal measuring principle operates independent of pressure and temperature fluctuations. Sensors, proportional valves and PI controllers are proven in-house developments by Bürkert and are perfectly compatible with one another.
Applications
Typical applications for mass flow meters and controllers are in the areas of metal, glass or ceramic processing, coating technology or in the production of foams in the food and plastics industries. MFCs/MFMs are also used in fermenters and water treatment systems.
To keep pace with the growing market trend towards automation also at field device level, all common Industrial Ethernet protocols were implemented. Users can choose between PROFINET, EtherNet/IP, EtherCAT or Modbus TCP. Particular attention was devoted to a straightforward commissioning using the respective device description files.
To see the full range of mass flow controllers available please see this section of the site: Gas Flow Measurement & Control
*(relative to N2)