Specifications

ContaminationSensor CS 1000 Cleanliness classes - brief overview
HYDAC FILTER SYSTEMS GMBH
en(us)
Page 97/112
BeWa CS1000 3764916 300 en-us 2012-08-29.doc 2012-08-29
Note: increasing the measurement reference by 1 causes the particle count to
double.
Example: ISO class 18 / 15 / 11 means:
Cleanliness class Particle count / ml Size ranges
18 1,300 – 2,500 > 4 µm
(c)
15 160 – 320 > 6 µm
(c)
11 10 – 20 > 14 µm
(c)
Overview of modifications - ISO4406:1987 <-> ISO4406:1999
"old" ISO 4406:1987 "new" ISO 4406:1999
Size ranges > 4 µm
(c)
> 5 µm > 6 µm
(c)
> 15 µm > 14 µm
(c)
Dimension
determined
Longest dimension of
a particle
Diameter of the
area-equivalent
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)