Sartorius Lab Instruments Gmbh & Co., Kg

Sartorius Ag

Tanja Mueck

Friedrich Helmsen

Helga Covic

Volker Relling

Otto Kuhlmann

Werner Schulze

Winfried Graf

Michael Mueller

Detlev Erben

Jonas Bode

Christian Schrader

Gerald Petzold

Lars Bornemann

Michael Steps

A pot magnet () for a moving coil () of an electronic balance operating using the electromagnetic compensation principle includes: &#x2014;a pot base () and a pot wall () rising vertically from the pot base, and &#x2014;a permanent magnet structure () disposed within the pot wall and having an annular gap thereto, which structure has a permanent magnet body () arranged on the pot base side and a pole plate () connected to the surface thereof facing away from the pot base side. The pole plate is fixed by a rigid mechanical connection independent of the permanent magnet body to the pot base at a predetermined distance therefrom and the permanent magnet body is bonded to the pole plate on a surface facing the pot base without contacting the pot base.

Pot magnet for a moving coil arrangement in an electronic balance

A method for producing a force-measuring element () having at least one articulation point () which separates one region of the force-measuring element () into two connected subregions () which can be deflected in relation to one another. The method includes: providing a force-measuring element blank (), removing material from the force-measuring element blank () in order to produce the articulation point (), checking whether the deflection behavior of the subregions () which is produced by the articulation point corresponds to a predefined specification, defining a correction form () which can be produced through material removal and compensates for an ascertained deviation from the predefined specification, correcting the articulation point geometry using a laser and the previously defined correction form (), through material removal at the articulation point.

Method for producing a force-measuring element

Force plate () having a plate-shaped carrier () which, when arranged vertically, has an upper carrier section () at the top in the vertical direction and a lower carrier section () at the bottom in the vertical direction. A first end carrier section () is connected, on the one hand, to the upper carrier section () via a vertical rod () and, on the other hand, to the lower carrier section () via a horizontally oriented spring element (). That end of the lower carrier section () which faces away from the first end carrier section () is connected to the upper carrier section () via a horizontal rod (). A second end carrier section () connects the horizontal rod () to the lower carrier section () via a vertically arranged spring element ().

Force plate with spring elements

A precision force transducer having a spring element () whose load-dependent deflection is converted into an electrical signal by means of strain gauge elements (). The spring element () is made of a precipitation-hardenable nickel-based alloy with a nickel content in the range of 36 to 60 percent and a chromium content in the range of 15 to 25 percent. The strain gauge elements () are composed of a polymer-free layered film system. This makes it possible to produce a precision force transducer that features great accuracy, low creep and low moisture sensitivity.

Nickel alloy precision force transducer with strain gauge elements

Growing community of inventors

Langelsheim, Germany

Tanja Mueck