|
几种污染度等级对照表 |
||||
|
ISO 4406∶1987 |
NAS 1638 |
SAE 749D |
每毫升油液中大于 10μm颗粒数 |
ACFTD质量浓度 /mg·L-1 |
|
26/23 25/23 23/20 21/18 20/18 |
12
|
|
140000 85000 14000 44500 2400 |
1000
100
|
|
20/17 20/16 19/16 18/15 17/14 |
11
10 9 8 |
6 5 |
2300 1400 1200 580 280 |
10
|
|
16/13 15/12 14/12 14/11 13/10 |
7 6
5 4 |
4 3
2 1 |
140 70 40 35 14 |
1
0.1 |
|
12/9 11/8 10/8 10/7 10/6 |
3 2
1
|
0
|
9 5 3 2.3 1.4 |
0.01 |
|
9/6 8/5 7/5 6/3 |
0 00
|
|
1.2 0.6 0.3 0.14 |
0.001 |