Calibration weight arrangement for an electronic balance
AssigneeMettler-Toledo AG
InventorsDominique Genoud, Christoph Latzer
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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.
Claims23
A calibration weight arrangement for an electronic balance which has a force-transmitting device, the calibration weight arrangement comprising:
- at least one calibration weight, adapted to be coupled to the force-transmitting device;
- a transfer mechanism;
- and
- a drive source to guidedly move the at least one calibration weight, the drive source having an actuator comprising a shape memory alloy that cooperates with the transfer mechanism, such that a structural change of the shape memory alloy occurring as a result of a temperature change causes the actuator to move the calibration weight.
Dependencies are inferred from the claim text.