The final step in the oil analysis process is data interpretation. Oil analysis laboratories provide interpretation and commenting on test results. Trends will be identified, and recommendations will be made as to maintenance actions that should be taken. Further assistance with interpretation can be provided by the testing laboratory.
Not all of the processes associated with used oil monitoring of aggregate equipment are simple, but development of a site-specific used oil analysis regimen will result in data that is meaningful and essential to achieving optimum oil life and extended equipment life. AM
Steve Waggoner is the quality management system manager and in-house technical manager for D-A Lubricant Co. He can be reached at email@example.com.
Determine the ISO Cleanliness Code for the amount of dirt particles in a sample of oil:
Particle count testing detects: 30,000 particles of 4 µ and larger
500 particles of 6 µ and larger
60 particles of 14 µ and larger
30,000 falls into the ISO Code 22 range
500 falls into the ISO Code 16 range
60 falls into the ISO Code 13 range
The ISO Cleanliness Code is 22/16/13.
ISO Code 12/9 14/11 16/13 18/15 20/17 22/19 24/21 26/23
Hydraulic Fluids Very Clean Clean Dirty
Gear Oils Very Clean Clean
Turbine Oils Very Clean Clean Dirty
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