Oil sampling frequency is one of the most important decision to take in an oil analysis program.
How often to take samples? An appropriate routine would be somewhere between two weeks and three months, and the following recommendations will be generalized to apply to any machine.
Therefore, to lower the remediation costs from an impending failure, you must sample and analyze the oil early within the FDP.
The FDP can be anywhere from a few months to a few hours. Considering that it would be too expensive to sample every hour and of little use to sample outside of a few months, the ideal frequency can be cost-justified somewhere in between and may fluctuate as the risk profile changes.