Abstract: A verification of a pipette results in a release or a warning message. A liquid measuring container (110) receives the pipette liquid volume (VP) to be verified. A loading cell (120) is connected to the liquid measuring container in a force-transmitting manner. The loading cell outputs a measurement signal (ms) corresponding to the weight force (FG) acting thereon. A processing unit (130) detects and processes the measurement signal (ms), determines a first weight force (Gt1) at time point (t1) and determines a second weight force (Gt2) at time point (t2). The pipette liquid volume is calculated and the calculated value is assigned to a pipette volume class (Ki) having a defined class nominal value (VKi). The processing unit tests whether or not an absolute value of the volume difference (?V) is within a predetermined tolerance value (T) for the assigned pipette volume class. The processing unit outputs the test result.

Abstract: A monoblock sensor body of a load cell based on an electromagnetic force compensation mechanism has a Roberval mechanism. Mounting portions mount the fixed column to a housing side of a weighing module, and mount a load receiving member to the movable column. At least one of the mounting portions has at least one mounting hole that extends predominantly orthogonal to the load direction. One of the flexure point sections is closest to the mounting hole. A cavity associated with at least one of the mounting portions reduces an available solid angle for straight propagation paths that run from the inner thread to one or more of: the closest flexure point section, the coupling and the closest fulcrum. A material boundary of the body closes the cavity over at least a bridging width versus the height-side end of the body corresponding to the closest flexure point section.

Abstract: An electromagnetic force-compensation direct measuring system (100) has a load receiver (101), which is connected to a force-compensation device (120) via a power-transmission linkage. The system has a multipart parallel guide mechanism, which has at least two parallel-guiding members (131, 132) spaced apart by the power-transmission linkage. The force-compensation device has at least one permanent magnet (121) and a coil (122) electrically connected to a controllable electrical circuit. At least one parallel-guiding member is electrically integrated in the controllable electrical circuit. The power-transmission linkage is designed as a single-part coil body (110) such that the coil is arranged on the coil body between the parallel-guiding members and is electrically connected to the controllable electrical circuit.

Abstract: An electromagnetic force-compensation direct measuring system (100) has a load receiver (101), which is connected to a force-compensation device (120) via a power-transmission linkage. The system has a multipart parallel guide mechanism, which has at least two parallel-guiding members (131, 132) spaced apart by the power-transmission linkage. The force-compensation device has at least one permanent magnet (121) and a coil (122) electrically connected to a controllable electrical circuit. At least one parallel-guiding member is electrically integrated in the controllable electrical circuit. The power-transmission linkage is designed as a single-part coil body (110) such that the coil is arranged on the coil body between the parallel-guiding members and is electrically connected to the controllable electrical circuit.

Abstract: A verification of a pipette results in a release or a warning message. A liquid measuring container (110) receives the pipette liquid volume (VP) to be verified. A loading cell (120) is connected to the liquid measuring container in a force-transmitting manner. The loading cell outputs a measurement signal (ms) corresponding to the weight force (FG) acting thereon. A processing unit (130) detects and processes the measurement signal (ms), determines a first weight force (Gt1) at time point (t1) and determines a second weight force (Gt2) at time point (t2). The pipette liquid volume is calculated and the calculated value is assigned to a pipette volume class (Ki) having a defined class nominal value (VKi). The processing unit tests whether or not an absolute value of the volume difference (?V) is within a predetermined tolerance value (T) for the assigned pipette volume class. The processing unit outputs the test result.

Abstract: An analog sensor with digital compensation function includes a deformation part generating a deformation relating to a pressure sensed by the analog sensor; a strain gauge connected to the deformation part and generating a change in resistance relating to the deformation; a strain gauge bridge connected to the strain gauge and transferring the change in the resistance of the at least one strain gauge to output a first analog signal; and an analog-to-digital conversion module converting the first analog signal to a first digital signal, representative of weight. A signal processing and output circuit compensates the first digital signal and converts it into a second analog signal.

Abstract: A balance (1) has a weighing pan (3) that is held in a predetermined free-floating and constant position relative to translatory and rotary displacements in the six degrees of freedom during use. At least six position sensors are used to measure the position of the weighing pan in all three dimensions. A weighing mechanism having at least six electromagnetic mechanisms (5) generate compensation forces (Fc1-Fc6) that act on the weighing pan by sending currents through a force coil (7) associated with an associated permanent magnet. The weight of an object on the weighing pan is determined from the amounts of current flowing in the respective force coils to maintain the weighing pan in position.

Abstract: A balance (1) has a weighing pan (3) that is held in a predetermined free-floating and constant position relative to translatory and rotary displacements in the six degrees of freedom during use. At least six position sensors are used to measure the position of the weighing pan in all three dimensions. A weighing mechanism having at least six electromagnetic mechanisms (5) generate compensation forces (Fc1-Fc6) that act on the weighing pan by sending currents through a force coil (7) associated with an associated permanent magnet. The weight of an object on the weighing pan is determined from the amounts of current flowing in the respective force coils to maintain the weighing pan in position.

Abstract: An analog sensor with digital compensation function includes a deformation part generating a deformation relating to a pressure sensed by the analog sensor; a strain gauge connected to the deformation part and generating a change in resistance relating to the deformation; a strain gauge bridge connected to the strain gauge and transferring the change in the resistance of the at least one strain gauge to output a first analog signal; and an analog-to-digital conversion module converting the first analog signal to a first digital signal, representative of weight. A signal processing and output circuit compensates the first digital signal and converts it into a second analog signal.

Abstract: An exemplary method for the temperature correction of a force-measuring device such as a balance is disclosed. The method includes generating, by means of a force-measuring cell, a force measurement signal corresponding to the input force; generating an electrical temperature measurement signal by means of a temperature sensor that is arranged at a distance from the heat-generating components of the force-measuring device, processing the force measurement signal into a temperature-corrected output signal based on the temperature measurement signal and the force measurement signal; and transmitting the output signal to an indicator unit and/or to a further processing unit.

Abstract: The present invention relates to a device (10) for storing and restoring electrical energy comprising a chamber (100) in which water electrolysis means (110), a fuel cell (120), and monitoring/control means (130) for monitoring the operation of said device (10) in the fuel cell mode or the electrolyzer mode are arranged. Connection means (141) enable said chamber (110) to be connected to storage means (210) for storing dihydrogen (H2), which are outside of said chamber (110).

Abstract: The present invention relates to a device (10) for storing and restoring electrical energy comprising a chamber (100) in which water electrolysis means (110), a fuel cell (120), and monitoring/control means (130) for monitoring the operation of said device (10) in the fuel cell mode or the electrolyzer mode are arranged. Connection means (141) enable said chamber (110) to be connected to storage means (210) for storing dihydrogen (H2), which are outside of said chamber (110).

Abstract: A method, an arrangement and a program process a measurement signal generated in a measurement transducer of an electronic force-measuring device, particularly a balance. The generated measurement signal corresponds to the force acting on the transducer. The measurement signal is entered directly or by way of a pre-processing stage into a display function which assigns corresponding output values to the values of the measurement signal. The output values are subsequently presented in a display or passed on for further processing. The input range of the display function contains a capture range, so that the values of the measurement signal that lie within the capture range are assigned a common output value by the display function, and the position of the capture range within the input range is controlled dependent on the generated measurement signal.

Abstract: An exemplary method for the temperature correction of a force-measuring device such as a balance is disclosed. The method includes generating, by means of a force-measuring cell, a force measurement signal corresponding to the input force; generating an electrical temperature measurement signal by means of a temperature sensor that is arranged at a distance from the heat-generating components of the force-measuring device, processing the force measurement signal into a temperature-corrected output signal based on the temperature measurement signal and the force measurement signal; and transmitting the output signal to an indicator unit and/or to a further processing unit.

Abstract: A device and method for effectuating the temperature compensation testing of digital load cells. The device uses conductive heat transfer to establish and maintain the temperature of the load cell(s) during testing. The device may include a vessel into which one or more load cells to be tested are placed. Temperature control of the load cells may be accomplished by circulating a temperature controlled fluid through the vessel. The vessel containing the one or more load cells may then be placed in a load application device that applies a load(s) to the one or more load cells during testing. Readings from the one or more load cells are used to establish a temperature compensation factor for each load cell tested. In other embodiments, temperature control of the load cells may be accomplished by placing the load cells in contact with a solid heat transfer element(s).

Abstract: A method serves to optimize the behavior of an electronic force-measuring device, in particular a balance that comprises a measuring transducer through which a measuring signal is formed which is representative of a load applied to the force-measuring device, which measuring signal is delivered to a signal-processing unit that is supported by at least one processor and at least one memory storage unit and serves to process digital signals.

Abstract: A device and method for effectuating the temperature compensation testing of digital load cells. The device uses conductive heat transfer to establish and maintain the temperature of the load cell(s) during testing. The device may include a vessel into which one or more load cells to be tested are placed. Temperature control of the load cells may be accomplished by circulating a temperature controlled fluid through the vessel. The vessel containing the one or more load cells may then be placed in a load application device that applies a load(s) to the one or more load cells during testing. Readings from the one or more load cells are used to establish a temperature compensation factor for each load cell tested. In other embodiments, temperature control of the load cells may be accomplished by placing the load cells in contact with a solid heat transfer element(s).

Abstract: A method serves to process output signal of a measuring transducer in a force-measuring device, in particular in a balance, wherein the measuring transducer produces a measuring signal representative of a load acting on the device and the measuring signal is filtered in a variable analog filter and/or, after processing in an analog/digital converter, the measuring signal is filtered in a variable digital filter, in order to remove unwanted signal components that are caused by disturbances affecting the force-measuring device, in particular by changes in the weighing load.

Abstract: The force-measuring device includes a measuring unit and a reference unit, the latter serving to deliver a reference quantity, a reference current (IREF) or a reference voltage (UREF), through which the force (FMO) of a measurement object which is to be determined can be measured by the measuring unit. The reference unit is a force-measuring device which is loaded with a reference mass and which in accordance with the principle of electromagnetic force compensation generates a reference current (IREF) that can be regulated through a measuring- and regulating device in such that in a first reference coil which is held by a reference lever, the reference current (IREF) generates a magnetic field which cooperates with the magnetic field of a reference magnet. Through this cooperation a magnetic force is brought to bear on the reference lever. As a result, the force (FREF) of the reference mass which is likewise acting on the reference lever can be compensated by said magnetic force.

Abstract: A method, an arrangement and a program process a measurement signal generated in a measurement transducer of an electronic force-measuring device, particularly a balance. The generated measurement signal corresponds to the force acting on the transducer. The measurement signal is entered directly or by way of a pre-processing stage into a display function which assigns corresponding output values to the values of the measurement signal. The output values are subsequently presented in a display or passed on for further processing. The input range of the display function contains a capture range, so that the values of the measurement signal that lie within the capture range are assigned a common output value by the display function, and the position of the capture range within the input range is controlled dependent on the generated measurement signal.