Method for weighing apparatus calibration management
AssigneeMettler-Toledo AG
InventorsDoug Bliss, John Moorman, Venus Simmons
Life of this patent
Estimating the term…
Abstract
A weighing apparatus calibration method uses a test mass, a material and a terminal to calculate and compare the total weight of the test mass and material to determine if the total capacity of the weighing apparatus has been calibrated. A system for managing calibration of a weighing apparatus is also described.
Claims9
A method for automatically re-calibrating a weighing apparatus as needed, said weighing apparatus having a predetermined total weighing capacity and being electronically connected to a terminal having a display, a keyboard, a calibration management module, a calibration test module and a calibration module, said method comprising the steps of:
- using said calibration management module to monitor one or more various limits associated with said weighing apparatus;
- producing an event when said one or more limits has been exceeded;
- performing a calibration test using said calibration test module upon the occurrence of said event;
- as determined by said calibration test, producing a second event indicating that re-calibration of said weighing apparatus is necessary;
- employing said calibration module to re-calibrate said weighing apparatus using a step calibration method comprising the steps of:
- (a) placing a test mass having a known weight and a material having substantially the same weight as said test mass on said weighing apparatus,
- (b) calculating a total weight on said weighing apparatus with said terminal,
- (c) calibrating said weighing apparatus to said total weight with said terminal,
- (d) comparing said total weight to said predetermined total weighing capacity of said weighing apparatus with said terminal, and
- (e) removing said test mass from said weighing apparatus.
Dependencies are inferred from the claim text.