Hydac FCU 1310 - Difference between ISO4406:1987 and ISO4406:1999

Appendix
Difference between ISO4406:1987 and ISO4406:1999
"old" ISO 4406:1987
"new" ISO 4406:1999
Size ranges
> 5 µm
> 15 µm
> 4 µm
(c)
> 6 µm
(c)
> 14 µm
(c)
Dimension
determined
Longest dimension of
a particle
Diameter of the
coextensive circle
ISO 11171:1999
Test dust
ACFTD - dust
1-10 µm ultra
fine fraction
ISO 12103-1A1
SAE Fine,
AC – Fine
ISO 12103-1A2
SAE 5-80 µm
ISO MTD
Calibration
dust for
particle
counters
ISO 12103-1A3
SAE Coarse
Coarse
fraction
ISO 12103-1A4
Comparable size
ranges
Old ACFTD
calibration
Comparable
ACFTD dusts
New Nist
calibration
-----
< 1 µm
4 µm
(c)
5 µm
4.3 µm
6 µm
(c)
15 µm
15.5 µm
14 µm
(c)
FCU1310
en(us)
Page 115 / 124
BeWa FCU1310 V300 3371346f en-us 2017-01-27.docx 2017-01-27