Abstract: A device and a method for determining material moisture by thermogravimetry. Included in the device are: a test chamber (2) delimited by a chamber cover (8); a microwave field that can be generated by a magnetron (5) and supplied to the test chamber by a waveguide (4); a tuning rod (22) arranged in the test chamber; a sample carrier (3) which is operatively connected to a weighing module (6) mounted upstream of the test chamber; and at least one sensor (24) arranged in the test chamber. The tuning rod is arranged centrally on the chamber cover, above the sample carrier, and the at least one sensor is arranged on the free end of the tuning rod, opposing the chamber cover.

Abstract: A device for dosing a number of constituents according to a given formula with a scale (1) containing a formula memory. The scale (1) is equipped with a transponder read unit (2), the given formula is storable in a transponder (4) and transmittable to the formula memory with the transponder read unit (2) and the transponder read unit (2) additionally monitors the dosed constituents during the dosing process. The storage containers (6) for the individual constituents are each provided with transponders (7), so that the individual constituents can be identified by the transponder read unit (2). This enables a simple and reliable transmission of the formula data to the formula memory of the scale and monitoring of the dosing process. Furthermore, the scale can be operated in a generally contact-free manner.

Abstract: A weighing system, using the principle of electromagnetic force compensation, which includes a permanent magnet system (14) having an air gap, a shielding cover (12), a coil (13) located inside the air gap, a transmission lever (7) to whose longer lever arm the coil is attached, and upon whose shorter lever arm the weight transferred by the load receiver acts, a position sensor (20, 21, 22) which detects the position of the transmission lever and which is situated in the vicinity of the coil, and a control amplifier (16) for controlling the current passing through the coil. Further, at least one vertical support (25) is connected to the transmission lever in the vicinity of the coil and the position sensor and projects through an opening (27) in the shielding cover. A counterweight (26) is placed on this/these support(s) closely above the shielding cover.

Abstract: A method and an apparatus for dynamically checking the weight of objects (18a-c) which are guided across a weight-sensitive zone (14) of a weighing device (12) at an adjustable conveying rate by a conveying mechanism (20a-c). At regular intervals, the weight-sensitive zone (14) supplies individual measured weight values (E1, . . . , En) from which resultant weight values are derived in a digital evaluation unit (16) by averaging. The evaluation unit (16) includes a plurality of cascaded averaging filters (24a-e) which have different filter lengths that are varied by a common scaling factor depending on the conveying rate.

Abstract: A method and an apparatus for dynamically check weighing objects (18a-c) that are guided across a weight-sensitive zone (14) of a weighing device (12) by a conveying mechanism (20a-c). At regular intervals, the weight-sensitive zone (14) supplies individual measured weight values (E1, . . . , En) from which resulting weight values are derived in a digital evaluation unit (16) by calculating mean values. The evaluation unit (16) includes a plurality of cascading mean value filters (24a-e) that have different filter lengths which are varied by a common scaling value in accordance with a spatial dimension of the objects (18a-c).

Abstract: A precision force transducer having a spring element (1) whose load-dependent deflection is converted into an electrical signal by means of strain gauge elements (10). The spring element (1) 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 (10) 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.

Abstract: Electronic scales having an integrated computer including a display for presenting information to a user, an input unit for entering selection data by a user, a memory for storing a plurality of activatable profiles as sets of parameter values for assignment to corresponding sets of parameters, and a data processing unit for controlling the display, the input unit, and the memory, and for determining and processing measured values in accordance with the current activated profile. The measured values are generated during a weighing operation by the user. To determine a profile, a user is requested, over a plurality of successive steps, to select one of several options presented by the display, the combination of the options presented in a step being dependent on the selection made in the preceding step. Then, during the weighing operation, the user is requested, again, over a plurality of successive steps, to perform an action presented by the display.

Abstract: An electronic scale having an integrated computer with an input unit for entering selection data, a memory for storing a plurality of parameter values, which can be assigned to function-specific parameters dependent on the entered selection data, a data processing unit for executing weighing applications dependent on a subset of the function-specific parameters and at least one interface for interacting with mechanical and/or electronic components dependent on a subset of function-specific parameters. A plurality of different profiles (24; 24?) can be stored as individual parameter value sets to adapt to user-specific and/or application-specific requirements. Selecting a specific profile (24; 24?) causes a joint assignment of the values contained therein to the corresponding parameters.

Abstract: The invention relates to a method for determining the humidity and/or density of a dielectric material in a resonator that is filled with said material and that contains a transmitter and a receiver. According to said method: the transmitter emits a signal; a resonance curve of the filled resonator is scanned in stages, whereby respective signal intensity values (Ui) are measured at different frequencies (fi); the resonant frequency (frm) and the bandwidth (BWm) are determined for the filled resonator from measured points (fi/Ui); and the humidity (?) and/or density (?) of the material are calculated by solving a second system of equations (G2), containing the resonant frequencies (fr0, frm) and bandwidths (BW0, BWm) of the empty and filled resonators and known calibration coefficients (ar1, ar2, br1, br2, cr1, cr2, abw1, abe2, bbw1, bbw2, cbw1, cbw2) of said resonator. The aim of the invention is to provide a method for determining the humidity independently of the density in a rapid, precise manner.

Abstract: A weighing system (1) with a plurality of weighing cells for respectively weighing a plurality of materials. The weighing cells have essentially the same configuration, are arranged interchangeably in a two-dimensional array, are releaseably fixed on a support element (6) and have electrical connectors.

Abstract: An electronic scale having a measuring sensor (1 . . . 16), a digital signal processing unit (18), a digital display (19), a bubble level (20), which includes a container (21) that is partially filled with a liquid (22) while forming a gas bubble (23), and circuit component or program routine in the digital signal processing unit (18) for detecting a displacement of the gas bubble (23). An additional circuit component or program routine detects the diameter of the gas bubble (23). The diameter of the gas bubble changes due to vertical vibrations of the scale. The signal from the measuring sensor (1 . . . 16) falsified by vibrations can thus be corrected by the digital signal processing unit (18) by calculation, making use of the diameter signal.

Abstract: An electronic scale having a measuring sensor (1 . . . 16), a digital signal processing unit (18), a digital display (19) and an inclinometer (40). The inclinometer derives a signal for the tilt of the scale from the difference of at least two signals. The digital signal processing unit (18) is provided with an additional circuit component or program routine that adds the two signals and, by way of this cumulative signal, corrects the vibration-distorted signal of the measuring sensor (1 . . . 16). A plurality of inclinometers enables the simultaneous detection of momentary gravitational acceleration. For example, in an electric bubble level, the gas bubble moves out of place when tilted and the diameter of the gas bubble changes when the gravitational acceleration changes. The scale thus provides an additional signal for correcting the influence of disturbances with minimum complexity.

Abstract: The invention relates to a device for agitating media (1), which are located on a platform (3). Said device consists of a housing (2) with an agitation mechanism, which is used to agitate the platform (3) and at least one sensor (4, 5), which is connected to a control unit (7) that is equipped with an electronic sensor system (6). According to the invention, the sensor(s) (4, 5) and the electronic sensor system (6) are located on the platform (3) and communicate in a wireless manner with the fixed control unit (7).