Patent ID: 11879770
Assignee: METTLER-TOLEDO (CHANGZHOU) PRECISION INSTRUMENTS LTD.
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 5:
6. A weighing method with an automatic micro-calibration function for material tank scales, comprising the steps of:
installing and connecting a material tank to the self-calibration weighing module and a control system;
calibrating data of the material tank by the self-calibration weighing module and weighing large-weight mixed solvents;
switching, by the control system, the self-calibration weighing module to an automatic small-range calibration mode, and performing small-range calibration by the self-calibration weighing module by:
taking a current weight of the material tank as a zero point;
sending, by the control system, an automatic adjustment instruction to the self-calibration weighing module;
performing the automatic adjustment by electronically commanding the self-calibration weighing module to load the material tank with a predetermined calibration weight;
displaying loaded weight data;
determining in the control system whether the result of the adjustment meets a predetermined requirement; and
only if the result does not meet the predetermined requirement, instructing, by the control system, the self-calibration weighing module to perform an automatic calibration; and

performing the step of weighing fine formulation materials using weighing control on the fine formulation materials by a feeding system of the material tank.