SECULAR CHANGE EVALUATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a secular change evaluation system capable of comprehending a secular change tendency of a predetermined characteristic value of a gas meter while comprehending a secular change tendency of a group generated from the same population.SOLUTION: Regular inspection data from plural gas meters 2a, 2b ... is accumulated in a storage 7 of a data collection center 4. The accumulated data is analyzed and evaluated by an analysis evaluation device 8. With this, a secular change tendency of a predetermined characteristic value can be comprehended together with a secular change tendency generated from the same population.