Danfoss Vickers Target-Pro 2 Operation Manual page 14

CleanlinessCodes
(continued)
TheTarget-Pro 2 is calibrated with ISO MediumTest Dust (to ISO 11171).
The correlation between particle sizes and the ACFTD (old standard) to
the ISOMTD (new standard) is as follows :
ACFTD <1 5 15
ISOMTD 4 6 14
*To be con rmed by NIST.
Correlation between Particle Sizes Obtained using ACFTD and NIST
Calibration Methods
Particle Size Obtained Using
ACFTD SIZE (ISO 4402:1991)
µm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
This table is only a guideline. The exact relationship between ACFTD sizes and the NIST
sizes may vary from instrument to instrument, depending on the characteristics of the parti-
cle counter and original ACFTD calibration.
1 4 Vickers by Danfoss Target-Pro 2 Analyzer and Sampler Operation Manual V-PP-MC-0002-E
25 30 50* 75*
21 25 38 50
ISOMTD NIST (ISO 11171) size
µm(c)
4.2
4.6
5.1
5.8
6.4
7.1
7.7
8.4
9.1
9.8
10.6
11.3
12.1
12.9
13.6
14.4
15.2
15.9
16.7
17.5
18.2
19.0
19.7
20.5
21.2
22.0
22.7
23.5
24.2
24.9
25.7
26.4
27.1
27.9
28.5
29.2
29.9
30.5
31.1
31.7
Other Standards
Although ISO 4406 is used extensively in the hydraulics
industry, other standards are occasionally required. Direct
100*
comparison is not always possible, but this table
provides some estimates.
68
Approximate Equivalents of Contamination Classes
ISO 4406 DEF.STD 05/42 [7]
Table A
13/11/08 —
14/12/09 —
15/13/10 —
16/14/09 —
16/14/11 —
17/15/09 400
17/15/10 —
17/15/12 —
18/16/10 800
18/16/11 —
18/16/13 —
19/17/11 1,300
19/17/14 —
20/18/12 2,000
20/18/13 —
20/18/15 —
21/19/13 4,400
21/19/16 —
22/20/13 6,300
22/20/17 —
23/12/14 15,000
23/21/18 —
24/22/15 21,000
25/23/17 100,000
NAS 1638[5]
ISO 11218[6]
Table B
— 2
— 3
— 4
400F —
— 5
— —
800F —
— 6
— —
1,300F —
— 7
2,000F —
— 8
— —
4,400F —
— 9
6,300F —
— 10
— —
— 11
— —
— 12
— —
— —
July 2023
SAE 749[8]
—
0
1
—
2
—
—
3
—
—
4
—
5
—
—
6
—
—
—
—
—
—
—
—