Arrangement and method for monitoring a hydraulic system

摘要

The present invention relates to an arrangement for monitoring a supply means within a platform. The arrangement comprises sensor means being arranged to generate sample values relating to a fluid characteristic variable, wherein said fluid is fed by the supply means within the platform. The arrangement further comprises processing means being arranged to receive a plurality of sample values from said sensor means. The invention is characterized in that the processing means is arranged to generate an absolute value of a difference between each of said received plurality of sample values and a subsequent associated sample value, wherein said received sample values are generated during a predetermined time period. The invention is also characterized in that the processing means is arranged to determine an indication number corresponding to the number of said generated absolute values which are greater than a predetermined threshold value. The sample collecting process is only active when a criterion comprising a stable pump in a no load condition and all hydraulic consumers are in a resting position or close to a resting position is fulfilled. The processing means is arranged to generate a piece of indication information depending upon a result of a comparison between said determined indication number and a predetermined comparison value.