ISO 11943:2021
[Current]
Hydraulic fluid power — Online automatic particle-counting systems for liquids — Methods of calibration and validation
...Table 4 Allowed deviation between two online APCs when they are mismatching
Particle size m % allowed deviation
>4 1,5
>5 1,5
>6 1,9
>8 3,2
>10 4,2
>12 4,5
>15 5,4
>20 7
>25 10,8
>30 15
10...
...online dilution and particle counting system
11...
...1 Perform a validation of the online dilution system, where used, at the same frequency as calibration
verification...
