Abstract: An electronic balance with a force-transmitting device (1, 101) has a calibration weight arrangement (4, 104). The arrangement includes a calibration weight (3, 103) capable of being coupled to the force-transmitting device (1, 101). It also includes a transfer mechanism and a drive source to effect a guided movement of the calibration weight (3, 103). The drive source has an actuator (16) that cooperates with the transfer mechanism and consists, at least in part, of a shape memory alloy. The actuator (16) moves the calibration weight (3, 103) through a structural change of the shape memory alloy as a result of a temperature change.

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 exemplary weighing module is disclosed which has a load receiver and a weighing cell that are connected to each other by a force-transmitting rod, wherein the weighing module is arranged inside a design space whose dimensions in a plane extending orthogonal to the load direction are limited by the design spaces occupied by neighboring weighing cells or represent the largest dimension of the weighing cell in said plane. An exemplary weighing cell has a parallel-guiding mechanism in which at least one movable parallel leg which is connected to the force-transmitting rod and at least one stationary parallel leg are arranged with a predefined guiding distance from each other, connected to each other by at least one upper parallel-guiding member and at least one lower parallel-guiding member. The effective length of the parallel-guiding members is larger than the guiding distance, and the movable parallel leg does not protrude out of the design space.

Abstract: An electronic balance with a force-transmitting device (1, 101) has a calibration weight arrangement (4, 104). The arrangement includes a calibration weight (3, 103) capable of being coupled to the force-transmitting device (1, 101). It also includes a transfer mechanism and a drive source to effect a guided movement of the calibration weight (3, 103). The drive source has an actuator (16) that cooperates with the transfer mechanism and consists, at least in part, of a shape memory alloy. The actuator (16) moves the calibration weight (3, 103) through a structural change of the shape memory alloy as a result of a temperature change.

Abstract: The calibration weight arrangement for an electronic balance with a force-transmitting device (1), includes a calibration weight (14) capable of coupling to the force-transmitting device (1). The calibration weight (14) is moved vertically by a transfer mechanism and a drive source to establish and to release the force-transmitting contact between the calibration weight (14) and the force-transmitting device (1). The transfer mechanism has at least one resetting element (22, 37, 38, 40, 43) and a lifting system configured as a knee joint linkage (17, 117, 217). The resetting element (22, 37, 38, 40, 43) and the lifting system work together to arrest and cushion the calibration weight (14) if the balance is shocked, dropped or hit.