Dsae As4059 Rev.e Cleanliness Classification For Hydraulic Fluids - MP Filtri ICM User Manual

Appendix D
SAE AS4059 REV.E Cleanliness
Classification For Hydraulic Fluids
This SAE Aerospace Standard (AS) defines cleanliness levels for particulate cont-
amination of hydraulic fluids and includes methods of reporting data relating to the
contamination levels. Tables 1 and 2 below provide the Maximum Contamination
Limits (Particles/100ml) of differential and cumulative particle counts respectively
for counts obtained by an automatic particle counter, e.g. ICM.
Size range μm(c):
Table D.1 AS4059E Table 1 - Cleanliness Classes for Differential Parti-
cle Counts
23
The information reproduced on this and the previous page is a brief extract from SAE AS4059 Rev.E,
revised in May 2005. For further details and explanations refer to the full Standard.
68
6 - 14
Class
00 125
0 250
1 500
2 1,000
3 2,000
4 4,000
5 8,000
6 16,000
7 32,000
8 64,000
9 128,000
10 256,000
11 512,000
12 1,024,000 182,400
SAE AS4059 REV.E Cleanliness Classification For . . .
14 - 21 21 - 38 38 - 70
22 4
44 8
89 16
178 32
356 63
712 126
1,425 253
2,850 506
5.700 1,012
11,400 2,025
22,800 4,050
45,600 8,100
91,200 16,200
32,400
23
>70
1 0
2 0
3 1
6 1
11 2
22 4
45 8
90 16
180 32
360 64
720 128
1,440 256
2,880 512
5,760 1,024