Bürkert has eliminated control-related elements for the 8741 mass flow controller (MFC)/mass flow meter (MFM). These control tasks are assumed by a superordinate control unit which addresses sensor-actuator modules (SAM), such as mass flow controllers, by means of a system bus. The SAMs are equipped with an interface for the proprietary Bürkert System Bus (büS). Previously, each MFC/MFM included its own control hardware; now the ME2X system control unit (SCU) is used. The SCU can control up to 16 control circuits (e. g. SAMs) at once and functions as a gateway between industrial ethernet and the büS. As a result, the field device level can be connected directly to industrial ethernet in an effective manner. The shift of the control hardware from the MFC/MFM to the SCU results in considerable benefits in applications with numerous control loops.
Type 8741 is equipped with MEMS technology for direct flow rate measurement in gases and designed for flow rates from 0.01 to 80 Nl/min (referring to nitrogen). The MFCs/MFMs convince with high accuracy, quick response times and excellent repeatability. In the process, it achieves very short settling times. All Type 8741 devices are enclosed in a sturdy polycarbonate housing which is seated on the fluid aluminium or stainless steel body. The 4-pin terminal block ensures easy electrical connection.
Hall 9, Booth G16