Sartorius Lab Instruments Gmbh & Co., Kg

Sartorius Ag

Sartorius

Olaf Dudda

Wilfried Spannagel

Christian Oldendorf

Daniel Faerger

Heinrich Feldotte

Heyko Holst

Christian Baseler

Karin Diedrich

Caroline Schroeder

Joerg Siedel

Doug Biette

A method for operating a balance includes: (a) introducing an ion cloud into a weighing chamber to bring an electrostatic charge state of a weighing sample towards an electrostatic neutral state, (b) detecting the neutral state, and (c) acquiring measured values of a weighing sensor, calculating therefrom a final weighing value representing the electrostatic neutral state, and outputting the final weighing value. When the ionizer is activated, the measured values of the weighing sensor are acquired, preliminary weighing values are calculated from the measured values and the final weighing value is calculated and output after a number of preliminary weighing values have been recognized as stable. During a recognition phase, positive and negative ion clouds are alternatingly generated, and during a neutralization phase, only ion clouds of that sign are generated that, in the recognition phase, had led to the larger changes within the preliminary weighing values.

Method of operating a balance with ionizer

A measuring instrument for thermogravimetrically determining the moisture content of a material, which includes a base (), configured as a balance, with a base surface (), and a hood () pivotably connected to the base. The hood has a weighing chamber lid (), weighing chamber walls (-) and a heating element (). The hood consists of an electronics module () that includes the heating element and an electronic power unit, and of a mechanical module () that includes the weighing chamber lid and all of the weighing chamber walls. The mechanical module () is rigidly and reversibly coupled to the electronics module so that the heating element, protrudes from a main body () of the electronics module and rises through a corresponding opening () in the rearward weighing chamber wall (), with the main body being pivotably connected to the base and surrounding the electronic power unit.

Measuring instrument for Thermogravimetrically determining the moisture content of a material

A pan lifting device configured to grip a pan of a balance with a positive fit has a pincer-shaped end () and a handle (). A blade-shaped supporting projection () of the pan lifting device is configured to accommodate the bottom () of the pan and a bent-over beak () of the pan lifting device is configured to clamp the rim () of the pan.

Pan lifting device

A measuring device having a sensor () with a signal cable () and a connector () at the cable end for transmitting a sensor signal. The measuring device further includes a data memory () storing sensor-specific calibration data, and an evaluation unit () with a port () for connecting the signal cable (). The sensor signal is evaluated in the evaluation unit () using the calibration data. In the invention, the memory () is enclosed in a memory housing () that is separate from the evaluation unit () and is inseparably fixed to at least one of the signal cable () and the connector () at the cable end. The memory () provides calibration data to the evaluation unit () via a transmission channel (), separate from the signal cable (), for transmitting the calibration data to the evaluation unit ().

Measuring device with evaluation unit and external memory

A measurement system having an analyzer unit () and at least one replaceable sensor (). Each sensor has a transponder () in which sensor-specific data is stored. The analyzer unit has an antenna () for wireless readout of the data stored in the transponder and for wireless transmission of the power required to operate the transponder. The transponder () and the antenna of the analyzer unit () are further configured to additionally transmit and receive the measurement signal of the sensor () wirelessly. The sensor may be accommodated in a connecting unit () configured to be secured to a corresponding mating component ().

Measurement system having at least one replaceable sensor

In a drying balance with a balance pan (,) which rests removably on the load receiver (,) of a weighing system, a radiation source (,) for warming and drying a substance on the balance pan (,), and a temperature calibrating disk (,) with at least one built-in temperature sensor (,), the load receiver (,) has a vertical hole (,) into which a pin (,) on the underside of the balance pan (,) protrudes. The housing (,) of the balance has an opening (,) around the hole (,) in the load receiver (,) which is significantly larger than the diameter of the pin (,). The temperature calibrating disk (,) has a plug (,) on its underside with several contacts (,) on the outer edge, which protrudes into the opening (,) without contacting the load receiver (,). The plug (,) establishes an electrical connection with the corresponding mating contacts (,) at the opening (,). The plug (,) has three contacts (,) which are held in a synthetic material part. Thus, the temperature calibrating disk (,) is electrically and mechanically easily connectable with the housing (,) such that it does not contact the load receiver (,).

Growing community of inventors

Goettingen, Germany

Olaf Dudda