Title:
METER EVALUATION SYSTEM
Document Type and Number:
Japanese Patent JP3765985
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a meter evaluation system capable of accurately evaluating the past calibration data to estimate a meter characteristic value and capable of accurately judging the renewing period of a meter to extend the calibration cycle of the meter.
SOLUTION: When a meter characteristic value is operated on the basis of the past calibration data (S300), a correlation coefficient is operated (S500) and it is judged whether there is the correlation with time in the meter characteristic value (S600). When there is correlation, a regression straight line is operated (S700) and it is judged whether there is a deterioration tendency in the meter (S800). When there is the deterioration tendency, meter renewal judging processing A is carried out (S1100). When there is no deterioration tendency, meter renewal judging processing A is carried out (S900) and next time calibration omitting advisabilty judging processing A is carried out (S1000). When there is no correlation, meter renewal judging processing B is carried out (S1200) and next time calibration omitting advisability judging processing is carried out (S1300).
Inventors:
Haruo Ito
Teramon Standard
Ryohei Kita
Hiroshi Itakura
Hironobu Sonoda
Teramon Standard
Ryohei Kita
Hiroshi Itakura
Hironobu Sonoda
Application Number:
JP2001025634A
Publication Date:
April 12, 2006
Filing Date:
February 01, 2001
Export Citation:
Assignee:
Yokogawa Electric Corporation
Japan Atomic Power Company
Japan Atomic Power Company
International Classes:
G01D18/00; (IPC1-7): G01D18/00
Domestic Patent References:
| JP10078464A | ||||
| JP9054613A | ||||
| JP11083536A |
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