Sartorius Ag

Joerg Peter Martens

Michael Laubstein

Alfred Klauer

Eduard Bierich

Juergen Winkelbach

Guenter Boetcher

An electronic balance including a housing ( ), a weighing scale ( ), a windshield ( ), which preferably at least partially surrounds the weighing scale, and a display and operating unit ( ) which is connected to the balance housing. The connecting part ( ) between the display and operating unit ( ) and the housing ( ) consists essentially of a material with poor heat conduction properties. At least one vertical radiation protection plate ( ) is provided between the display and operating unit ( ) and the housing ( ), and the connecting part ( ) is configured in such a way as to impair air convection on both sides of the radiation protection plate(s) ( ) preferably to the least extent possible. This results in excellent thermal decoupling between the display and operating unit ( ) and the housing ( ).

Analytical balance having a connecting part between the housing and the display and operating unit

An electronic weighing sensor ( ) having a digital signal processing unit ( ), which includes at least one filter ( ) with low-pass characteristic. By means of the filter ( ), the direct-current component (m) is determined from the output signal of the weighing sensor and the weighing result is derived therefrom. A signal, which is dependent on the amplitude of the vibrations, is determined by the digital signal processing unit ( ) and electronic components ( ) change the direct-current component (m) as a function of the magnitude of the vibration-dependent signal. This significantly improves the performance of the weighing sensor ( ) with respect to shocks and vibrations in the installation site of the weighing sensor ( ).

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Bovenden, Germany

Joerg Peter Martens