Krohne Messtechnik Gmbh Co. Kg

Jurgen Wolter

Detlef Ludwig

Wolfgang Stelz

An electronic measuring instrument encompasses a sensor for the acquisition of process variables, a main memory for the operating parameters of the measuring instrument as well as several additional memory blocks for at least part of the operating parameters of the measuring instrument: The additional memory blocks includes a first memory block which serves to store active operating parameters, a second memory block for storing delivered preset operating parameters and a third memory block for storing application-specific operating parameters. An electronic measuring instrument of this design allows the user to access different versions of the operating parameters, enabling him for instance in the event of a failure or upon exchanging a component of the measuring instrument to activate the respectively appropriate version of operating parameters. A method for operating the instrument is also disclosed.

Electronic measuring instrument and method for operating an electronic measuring instrument

An optoelectronic keypad and a method for controlling an optoelectronic keypad for a measuring instrument, require a transparent touch screen, at least two touch-sensitive control buttons, at least two light emitters and at least two photodetectors, where said control buttons are located next to each other on one side of the surface of the touch-screen, the light emitters and the photodetectors are situated next to each other on the other side of the touch screen and each one control button, light emitter and photodetector are functionally associated with one another in a way as to constitute one action key, whereby pressing the control button of an action key causes the light emanating from the light emitter of that action key to be reflected at the actuated key and to impinge on the photodetector of that key. A central control and processing unit is also provided, the light emitters being connected to said central control and processing unit and the light emitters being time-controlled by the central control and processing unit in such fashion that at any one time only one of the juxtaposed light emitters is in the active state. This substantially reduces the risk of a detection error relative to the actuation of a key.

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Oberhausen, Germany

Jurgen Wolter