| 摘要 |
PURPOSE:To obtain a forecasting message simply and precisely by finding the coefficient of status variation at the detection of plant troubles and approximately forecasting the status to be generated subsequently on an assumption that the status is changed based upon the found coefficient of variation. CONSTITUTION:A forecasting message circuit 31 is connected to the output terminal of a two-input AND gate 24. The forecasting message circuit 31 finds the coefficient of variation of sealed oil differential pressure when outputs of a supplied oil pressure detector continue to be decreased at the detection of a low output from a sealed oil differential pressure detector and, afterwards, outputs a forecasting message after passing the starting time of an emergency sealed oil pump on the assumption that sealed oil differential pressure is decreased based upon the found coefficient of variation. |
