| 摘要 |
<p>PURPOSE:To find early abnormalities in an oil level by generating an alarm when the deviation of the oil level from that obtained from the relationship between the detected oil level and the prestored oil level exceeds a predetermined value. CONSTITUTION:When oil supply to an apparatus 2 to be supplied with oil is started, the oil level of an oil tank 1 is detected by an oil level detector 21. On the other hand, the forecast oil level relationship stored in a memory 23 is taken out to be added to an adder 24 with the oil level relationship of an oil system receiving the oil supply starting signals of the start of oil pumps 9, 10, opening of a valve 13, etc. to be corrected with respect to temperature detected by an oil temperature detector 22 so that the oil level relationship of the oil system to be supplied with oil is outputted. The detected oil level is compared by a comparator 25 with the oil level corresponding to the detected oil level detecting time of the oil level relationship outputted from the adder 24. When the deviation between both oil levels exceeds a predetermined value, an alarm is generated from an annunciator 26 or an accident preventing trip system is operated.</p> |
