RMF Systems CMS 2, Руководство пользователя

Страница: 76 / 84

75
As a policy of continual improvement, RMF reserves the right to alter the specification without prior notice.
201.028 REV 1 Date of Issue: 18 June 2018
11.4 ISO4406:1999 Cleanliness Code System
Number or Particles per ml Scale
No.
More than Up to and
including
2.5M - >28
1.3M 2.5M 28
640K 1.3M 27
320K 640K 26
160K 320K 25
80k 160K 24
40k 80k 23
20k 40k 22
10k 20k 21
5000 10k 20
2500 5000 19
1300 2500 18
640 1300 17
320 640 16
160 320 15
80 160 14
40 80 13
20 40 12
10 20 11
5 10 10
2.5 5 9
1.3 2.5 8
0.64 1.3 7
0.32 0.64 6
0.16 0.32 5
0.08 0.16 4
0.04 0.08 3
0.02 0.04 2
0.01 0.02 1
0.0 0.01 0
Figure 11.2
Figure 11.3
The International Standards Organization standard ISO 4406:1999 is the preferred method of quoting the number
of solid contaminant particles in a sample.
The code is constructed from the combination of three scale numbers selected from Figure 11.1.
The first scale number represents the number of particles in a milliliter sample of the fluid that are larger than
4μm(c).
The second number represents the number of particles larger than 6μm(c).
The third represents the number of particles that are larger than 14μm(c).