Abstract: The calibration weight arrangement for an electronic balance (1) with a force-measuring cell (6) has a calibration weight (14) which can be coupled to the force-measuring cell (6). A transfer mechanism and a drive source are used to move the calibration weight vertically, in order to establish, as well as to release, the force-transmitting contact between the calibration weight and the force-measuring cell. The transfer mechanism has at least one resetting element (122), a lifting system (110) configured as a knee-joint linkage (117), and a multi-stable positioning element (115). Due to the feedback from the multi-stable positioning element, whose first stable state defines the calibrating position (132) and whose second stable state defines the rest position (133) of the transfer mechanism, the actuator (118) is energized only during the phases when the transfer mechanism is moving.

Abstract: An armature for holding an interchangeable measuring probe, has a housing (2), an immersion tube (3) that removably receives the probe and which is axially movable in the housing between a rest position and a measuring position, a drive mechanism arranged in a drive mechanism housing (17, 26), and a drive element (4) designed to be coupled to the immersion tube. The immersion tube and/or the measuring probe are always located outside of the drive mechanism housing. A housing attachment (25) is arranged between the housing and the drive mechanism housing, the housing attachment being connected to the housing in a releasable manner.

Abstract: A measuring probe for potentiometric measurements has a housing (2) formed of an electrically insulating material that encloses at least one hollow space (8, 10) containing a half-cell element defining a first electrode. At least one additional electrode (12) is provided on a portion (4) of the housing adapted for immersion in a measuring solution (6) and is connected to a contact terminal (K3) that is arranged outside of the immersible portion (4). Each additional electrode (12) is defined by an electrically conductive coating (14) applied to the outside of the housing (2).

Abstract: A polymer electrolyte for an electrochemical half-cell, such as a reference half-cell, contains a polymer which can be produced by polymerization of N-acryloyl-amino-ethoxy-ethanol or by co-polymerization of N-acryloyl-amino-ethoxy-ethanol with at least one further monomer component.

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 method serves to correct drift phenomena, in particular creep effects, occurring in an electronic balance that has a measuring transducer through which a measuring signal is formed which is representative of a load applied to the force-measuring device. The measuring signal is delivered by way of an analog/digital converter to a signal-processing unit that is supported by at least one processor, said signal-processing unit being capable of compensating drift deviations, for which purpose the signal-processing unit, via the processor, accesses drift parameters that are stored in a memory unit and serve as basis for calculating a time-dependent correction value by which the drift error of the measuring signal (ms) is corrected.

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: A force-measuring cell is disclosed which is equipped with a force transducer which includes a deformable body that is equipped with sensors. The deformable body connects a housing-mounted fixed part to a force-introducing part of the force transducer. The sensors are connected to electrical conductors of at least one flat ribbon cable which leads to a circuit module that serves to process the measuring signals and contains the connections for joining the sensors together in a measuring bridge circuit. The conductor tracks can be configured so that all of the connecting leads from nodal points of a measuring bridge to the contact terminals of the sensors have at least approximately equal resistance values.

Abstract: A weighing cell module with a force-transfer mechanism that includes a parallel-guiding linkage with a vertically movable parallelogram leg and a spatially fixed parallelogram leg, is equipped with a mounting area for a first weighing-pan support device with a single-point connection of a weighing pan, as well as with a mounting area for a second weighing-pan support device with a multiple-point connection, particularly a four-point connection, of a weighing pan, wherein the first and the second mounting area are each connected to the force-transfer mechanism. As a result, the weighing cell module can be used to manufacture different types of balances in a design family of balances, where each different type within the family is designed for a different maximum load.

Abstract: A balance (1) with a housing (3) containing the weighing mechanism and associated electronic components has at least three positioning feet (5, 5?) to stand on a supporting surface (20), at least two of the positioning feet (5) being height-adjustable for setting the balance (1) into a level position. In addition, the balance (1) has at least one stabilizer foot (6, 106) which can be locked and unlocked, so that for adjusting the level position of the balance, the stabilizer foot is released and thereby enabled to stay in contact with the supporting surface (20), and after the level adjustment of the balance has been completed, the stabilizer foot is locked in place to secure the stability of the balance (1) in its set position.

Abstract: A calibrating device for a balance including a load receiving unit for loads to be weighed, a load measuring unit and a lever mechanism serving for the force transmission between the load receiving unit and the load measuring unit, wherein the lever mechanism is coupled to the load receiving unit through a coupling area on an input side and to the load measuring unit through a coupling area at an output side, and wherein the lever mechanism further includes an additional coupling area, separate from the coupling areas on the input and output sides, for releasably coupling a calibrating force which is uncoupled during the normal weighing operation.

Abstract: A dryer mounted in a housing with a balance for determining the moisture content of material to be weighed which is in a dish placed in the balance and is subjected to a heat source. The dish is placed in a dish support device which can be placed in and removed from the dryer together with the dish. The dish can be inserted into the dish support device and removed from the dish support device manually and from the side. An upwardly bent inner edge of a support ring prevents impurities resting on the support ring from unintentionally dropping into the dish.

Abstract: A checkweigher with a belt conveyor includes at least two belt conveyor sections which are arranged one behind the other in conveying direction, wherein one of the conveyor sections is a weighing bridge. The individual conveyor sections include a plurality of conveying belts which travel on a sliding surface and are guided around guide rollers at the ends of the conveyor sections. Sliding fingers formed by extensions of the sliding surface are provided adjacent the conveying belts, wherein the sliding fingers substantially bridge the gap between the adjacent conveyor sections.

Abstract: An overload protection device for a precision balance includes a measuring cell having a short travel distance, a parallel guide unit connected to a load receiving unit, and an auxiliary parallel guide unit whose guide members are connected to the load receiving unit, on the one hand, and to a weighing dish carrier member, on the other hand, wherein the guide members of the auxiliary parallel guide unit are pretensioned by at least one spring and form a rigid unit with the load receiving unit within the loading range of the balance. The auxiliary parallel guide unit includes an upper guide member and a lower guide member, wherein the two ends of the guide members of the auxiliary parallel guide unit on the side of the weighing dish are connected to each other by at least one guide bolt fastened to the upper guide member and the lower guide member. The guide bolt extends with play through a support plate which is fixedly connected to the load receiving unit of the measuring cell.

Abstract: A force measuring apparatus includes a parallelogram guide composed of a fixedly supported parallelogram side member, two parallel guide members which are longitudinally stiff and bending-elastic in the plane of the parallelogram, and an additional parallelogram side member for receiving the force to be measured. The additional parallelogram side member is guided so as to be deflectable in parallel on the fixedly supported parallelogram side member by the guide members. A measuring transformer supplies a signal corresponding to the force to be measured. A device for transmitting at least a portion of the force on the measuring transformer to be measured acting on the deflectably guided parallelogram side member is coupled through the coupling member to the deflectable parallelogram side member.

Abstract: A dryer mounted in a housing includes a precision balance arranged in the housing for determining the moisture content of material to be weighed which is placed on a weighing dish and is subjected to heat radiation from a heat source of the dryer. For making the material to be weighed accessible, the precision balance can be moved in and out of the housing. A duct for conducting an air flow is mounted between the weighing dish and the load-receiving unit which supports the weighing dish and is mounted above the measuring cell of the precision balance.

Abstract: A precision balance of the type having a short-stroke measuring system includes a load receptor connected to the measuring system by means of a hanger. The load receptor has the shape of a yoke and extends around the hanger. The yoke-shaped load receptor rests on the ends of two arms of a receiving element, wherein the arms are attached to the bottom of the hanger and elastically prestressed to press against the hanger. The yoke-shaped load receptor is held at the upper part of the hanger in a manner allowing guided sideways movement of the load receptor.

Abstract: A weighing scale includes a display, and a keyboard having a single bar-type key for selecting weighing programs or parameter "tree" configurations as displayed on the display of the weighing scale. The bar-type key has a plurality of longitudinally-spaced operating portions corresponding with the various operations indicated on the display, respectively.

Abstract: A top-loading precision balance with a draft protection device which includes several walls connected to each other at the edges thereof, and a cover which closes the opening defined at the top of the walls. The cover is fastened through a horizontally extending hinge to one of the walls. The hinge of the cover includes a spring which acts against the direction of movement for closing the cover. The spring mounted in the hinge is a torsion spring which is fixed at both ends thereof. The frame forming the bottom of the draft protection device has on its bottom side a groove into which lugs mounted on the balance housing engage when the draft protection device is placed on the balance housing. A spring is fastened at the groove of the frame under the front side of the draft protection device. The spring engages in a groove of one of the lugs.

Abstract: A method and apparatus for initiating a weighing scale operation, including a quick start program operable either by the tare key of the weighing scale or by the application of a load to the load-receiving member of the scale to by-pass a start-up test program, and to connect directly a weighing program to a display, thereby to avoid the display and confirmation of a start-up test program. Upon the reenergization of the signal processing unit following a power failure, the test program is automatically displayed on the display device.