Parker Hannifin Corporation
Pneumatic Division
Richland, Michigan
www.parker.com/pneumatics
30
For inventory, lead times, and kit
lookup, visit www.pdnplu.com
Tie Rod and Profile Pneumatic Cylinders
P1F Series
Catalog 0980
Specifications
ISO8573-
1:2010
CLASS
Solid Particulate
Water
Oil
Maximum number of particles per m3
Mass
Concentration
mg/m3
Vapor
Pressure
Dewpoint
Liquid
g/m3
Total Oil (aerosol liquid and vapor)
0,1 - 0,5 micron
0,5 - 1 micron
1 - 5 micron
mg/m3
0
As specified by the equipment user or supplier and more stringent than Class 1
1
≤ 20 000
≤ 400
≤ 10
-
≤ -70 °C
-
0,01
2
≤ 400 000
≤ 6 000
≤ 100
-
≤ -40 °C
-
0,1
3
-
≤ 90 000
≤ 1 000
-
≤ -20 °C
-
1
4
-
-
≤ 10 000
-
≤ +3 °C
-
5
5
-
-
≤ 100 000
-
≤ +7 °C
-
-
6
-
-
-
≤ 5
≤ +10 °C
-
-
7
-
-
-
5 - 10
-
≤ 0,5
-
8
-
-
-
-
-
0,5 - 5
-
9
-
-
-
-
-
5 - 10
-
X
-
-
-
> 10
-
> 10
> 10
Specifying air quality (purity) in accordance with ISO8573-1:2010, the international
standard for compressed air quality
ISO8573-1 is the primary document used from the ISO8573 series as it is this document which specifies the
amount of contamination allowed in each cubic metre of compressed air.
ISO8573-1 lists the main contaminants as Solid Particulate, Water and Oil. The purity levels for each contaminant are shown
separately in tabular form, however for ease of use, this document combines all three contaminants into one easy to use table.
Specifying air purity in accordance with
ISO8573-1:2010
When specifying the purity of air required, the standard must
always be referenced, followed by the purity class selected for
each contaminant (a different purity class can be selected for
each contamination if required).
An example of how to write an air quality specification is
shown below:
ISO 8573-1:2010 Class 1.2.1
ISO 8573-1:2010 refers to the standard document and its
revision, the three digits refer to the purity classifications
selected for solid particulate, water and total oil. Selecting an
air purity class of 1.2.1 would specify the following air quality
when operating at the standard’s reference conditions:
Class 1 - Particulate
In each cubic meter of compressed air, the particulate count
should not exceed 20,000 particles in the 0.1 - 0.5 micron
size range, 400 particles in the 0.5 - 1 micron size range and
10 particles in the 1 - 5 micron size range.
Class 2 - Water
A pressure dewpoint (PDP) of -40°C or better is required and
no liquid water is allowed.
Class 1 - Oil
In each cubic meter of compressed air, not more than 0.01mg
of oil is allowed. This is a total level for liquid oil, oil aerosol
and oil vapor.
ISO8573-1:2010 Class zero
• Class 0 does not mean zero contamination.
• Class 0 requires the user and the equipment
manufacturer to agree contamination levels as part of
a written specification.
• The agreed contamination levels for a Class 0
specification should be within the measurement
capabilities of the test equipment and test methods
shown in ISO8573 Pt 2 to Pt 9.
• The agreed Class 0 specification must be written on all
documentation to be in accordance with the standard.
• Stating Class 0 without the agreed specification is
meaningless and not in accordance with the standard.
• A number of compressor manufacturers claim that
the delivered air from their oil-free compressors is in
compliance with Class 0.
• If the compressor was tested in clean room
conditions, the contamination detected at the outlet
will be minimal. Should the same compressor now
be installed in typical urban environment, the level of
contamination will be dependent upon what is drawn
into the compressor intake, rendering the Class 0 claim
invalid.
• A compressor delivering air to Class 0 will still require
purification equipment in both the compressor room
and at the point of use for the Class 0 purity to be
maintained at the application.
• Air for critical applications such as breathing, medical,
food, etc typically only requires air quality to Class
2.2.1 or Class 2.1.1.
• Purification of air to meet a Class 0 specification is
only cost effective if carried out at the point of use.
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