US 12,332,109 B2
Method for configuring a calibration mechanism and force sensor thereof
Lei Xu, Changzhou (CN); Jean Christophe Emery, Shanghai (CN); and Li Yang, Changzhou (CN)
Assigned to Mettler-Toledo (Changzhou) Precision Instruments Ltd., Changzhou (CN); Mettler-Toledo (Changzhou) Measurement Technology Ltd., Changzhou (CN); and Mettler Toledo International Trading (Shanghai) Co., Ltd, Shanghai (CN)
Appl. No. 18/010,030
Filed by Mettler-Toledo (Changzhou) Precision Instruments Ltd., Changzhou (CN); Mettler-Toledo (Changzhou) Measurement Technology Ltd., Changzhou (CN); and Mettler-Toledo International Trading (Shanghai) Co., Ltd., Shanghai (CN)
PCT Filed Jun. 23, 2021, PCT No. PCT/CN2021/101760
§ 371(c)(1), (2) Date Dec. 13, 2022,
PCT Pub. No. WO2022/001772, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 202010608984.7 (CN), filed on Jun. 29, 2020.
Prior Publication US 2023/0228615 A1, Jul. 20, 2023
Int. Cl. G01G 23/01 (2006.01)
CPC G01G 23/012 (2013.01) 12 Claims
OG exemplary drawing
 
1. A method for configuring a calibration mechanism in a force sensor, comprising the steps of:
coupling an end of a calibration lever to a loading end of the force sensor;
adjusting, in a no-load condition, a center of gravity of the calibration lever, so that the center of gravity lies substantially on a horizontal line which goes through a center of a calibration lever fulcrum at a fixed end of the force sensor; and
adjusting, in a full-load condition, the center of gravity of the calibration lever loaded with a calibration weight, so that the center of gravity lies substantially on the horizontal line which goes through the center of the calibration lever fulcrum;
wherein in the no-load condition, an enclosed acute angle between a line connecting the center of the calibration lever fulcrum and the center of gravity with the horizontal line is between −2° and +2°; and
wherein in the full-load condition, the enclosed acute angle between a line connecting the center of the calibration lever fulcrum and the center of gravity with the horizontal line is between −2° and +2°.