Sartorius Ag

Peter Fleischer

Otto Kuhlmann

Friedrich Helmsen

Thomas Fehling

Detlev Erben

Veronika Martens

Thorsten Capelle

Rudolf Muller

Wilfried Langner

Rudolf Mueller

A weighing system having a base region (), a parallel-guided load receiver (), at least one transmission lever () that is pivotably mounted on the base region via at least one flexural pivot (), and a coupling element () that connects the load sensor to the short lever arm of the transmission lever. The flexural pivot (), at least one part of the transmission lever (), and at least one part of the base region (') are monolithically formed from a block. The flexural pivot () is separated from the rest of the block by four horizontal parallel bores () that are adjacently arranged in an annular manner in such a way as to respectively leave a thin connecting segment () between adjacent bores, and by additional slots. In this way, a hysteresis-free flexural pivot can be created without the need for separate assembly components.

Weighing system of monolithic construction including flexural pivot

A weighing system that works on the principle of electromagnetic force compensation. The weighing system has two guide members (), which connect a load support () to a base region fixed to the housing. The weighing system also has at least one transmission lever (), which is mounted on the base region. The base region is divided into two separate subregions (), the transmission lever () extends between these two subregions. Two weighing systems are arranged laterally side by side and their base regions are interconnected in such a way that the two subregions () of the base region of the one weighing system are connected to the two subregions () of the base region of the other weighing system such that their positions are fixed relative to each other.

Narrow weighing system arranged in narrowly spaced rows in the lateral direction

A weighing system having a base region (), a parallel-guided load receiver (), at least one transmission lever () that is pivotably mounted on the base region via at least one flexural pivot (), and a coupling element () that connects the load sensor to the short lever arm of the transmission lever. The flexural pivot (), at least one part of the transmission lever (), and at least one part of the base region (') are monolithically formed from a block. The flexural pivot () is separated from the rest of the block, and at least one spring connecting segment () of the flexural pivot () includes two spaced-apart thin material points (). In this way, a hysteresis-free flexural pivot can be created without the need for separate assembly components.

A weighing system that operates according to the principle of electromagnetic force compensation, having two connecting rods () which are fashioned as a parallel guide and connect a load receiver () to a base area () fixed to the housing, and having an angle lever () mounted on the base area. The force due to weight that is transmitted by the load receiver acts upon the short lever arm (') of the angle lever via a coupling element, and a coil projecting into the air gap of a permanent magnet system () is fastened to the long lever arm (&#x2033;). The weighing system occupies only a small area since the long lever arm takes the form of a vertical lever arm and extends, at least in part, in the area underneath the connecting rods of the parallel guide. The permanent magnet system is likewise arranged underneath the connecting rods of the parallel guide.

Weighing system having an angle lever with a long vertical lever arm

A weighing system that works on the principle of electromagnetic force compensation has two guide members (), which as a parallel guide unit connect a load support () to a base region () fixed to the housing, and at least one transmission lever (), which is mounted on the base region. The weighing system is configured such that a permanent magnet system may be wider than the body of the weighing system and configured to provide a recess into which the permanent magnet system(s) () of an adjacent weighing system () or of adjacent weighing systems can project. The permanent magnet system can thus be twice as wide as the body of the system.

A weighing sensor including a base () fixed to a housing, a load sensor () connected to the base in a displaceable manner via two arms (), a lever system () having at least one lever and transmitting the load acting on the load sensor to a transducer (), and a built-in calibration weight () which may be lowered onto a support region () for checking and/or calibrating the sensitivity of the weighing sensor. The support region is guided in a parallel manner by two additional arms () and is connected to a lever () of the lever system () via a coupling element (). Relatively large loads on the weighing sensor may be simulated with relatively small calibration weights, without the need for complicated lifting devices. The two additional arms () are connected on the one hand to the support region () and on the other hand to the load sensor () and are located on the side of the load sensor () opposite from the lever system ().

Weighing sensor with calibration weight

A balance with a system carrier (1) fixed to the housing and with a balance-scale support part (2) connected by two upper and two lower guide rod struts in the form of a parallel guide to the system carrier. Each upper guide rod strut is connected to a lower guide rod strut via two connection areas, which struts are combined to a guide rod plate (5,6). The two guide rod plates (5,6) are fastened laterally to the system carrier (1) and to the balance-scale support part (2). The system carrier (1) is wider than the balance-scale support part (2). The two screw attachment surfaces for the guide rod plates (5,6) on the system carrier (1) and on the balance-scale support part (2) form an angle with one another so that the system carrier (1), the two guide rod plates (5,6) and the balance-scale support part (2) form a trapezoid when viewed from the top.

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Goettingen, Germany

Peter Fleischer