公开(公告)号：EP1287318A1

公开(公告)日：2003-03-05

申请号：EP01940425.0

申请日：2001-05-09

申请人： Endress + Hauser GmbH + Co.KG.

发明人： SPANKE, Dietmar ,  LALLA, Robert

IPC分类号： G01F23/284 ,  G01F23/296

CPC分类号： G01F23/284 ,  G01F23/2962

摘要： The invention relates to a method for determining the filling level of a medium (3) in a container (2). A mixer (5) that has at least one mixer blade (6) and a mixer frequency (ƒR) is disposed in the container. Measuring signals are emitted at a predetermined measuring frequency (ƒM) towards the medium (3). The measuring signals reflected on the surface (4) of the medium (3) are received and evaluated by a runtime method. The aim of the invention is to provide a device which allows for a reliable measurement of the filling level of a medium (3) in a container (2) provided with a mixer (5). To this end, the measuring frequency (ƒM) of the measuring signal having the mixer frequency (ƒR) of the mixer is synchronized (ƒM = n . ƒR with n ⊂ N) and that the measuring frequency (ƒM) is shifted by a defined phase (?) with respect to the mixer frequency (ƒR).

公开(公告)号：EP1328776A1

公开(公告)日：2003-07-23

申请号：EP01992873.8

申请日：2001-10-20

申请人： Endress + Hauser GmbH + Co.KG.

发明人： BOLDT, Matthias ,  ERDMANN, Frank ,  PANKRATZ, Klaus ,  VON STEIN, Bert ,  SPANKE, Dietmar

IPC分类号： G01D9/00 ,  G01F23/18

CPC分类号： G01F23/284 ,  G01D9/005

摘要： The invention relates to a device for determining and/or monitoring a process variable. The aim of the invention is to provide a cost-effective, user-friendly device for determining and/or monitoring a process variable. The inventive device comprises the following elements: a sensor, a measuring/regulating/control unit (3) which pre-defines at least one event to be determined or monitored, and at least one memory unit (4; 5) which stores data according to the at least one pre-defined event. The sensor, the measuring/regulating/control unit (3) and the memory unit (4; 5) form a compact unit or an independent field appliance.