ISO 12103-2:1997
(Main)Road vehicles — Test dust for filter evaluation — Part 2: Aluminium oxide test dust
Road vehicles — Test dust for filter evaluation — Part 2: Aluminium oxide test dust
Véhicules routiers — Poussière pour l'essai des filtres — Partie 2: Poussière d'essai d'oxyde d'aluminium
General Information
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 12103-2
First edition
1997-12-15
Road vehicles — Test dust for filter
evaluation —
Part 2:
Aluminium oxide test dust
Véhicules routiers — Poussière pour l'essai des filtres —
Partie 2: Poussière d'essai d'oxyde d'aluminium
A
Reference number
Foreword
ISO (the International Organization for Standardization) is a worldwide
federation of national standards bodies (ISO member bodies). The work of
preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which
a technical committee has been established has the right to be represented
on that committee. International organizations, governmental and non-
governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 12103-2 was prepared by Technical Committee
ISO/TC 22, Road vehicles, Subcommittee SC 7, Injection equipment and
filters for use on road vehicles.
ISO 12103 consists of the following parts, under the general title Road
vehicles — Test dust for filter evaluation:
— Part 1: Arizona test dust
— Part 2: Aluminium oxide test dust
Annexes A to C of this part of ISO 12103 are for information only.
© ISO 1997
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
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Printed in Switzerland
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ISO ISO 12103-2:1997(E)
Introduction
This part of ISO 12103 specifies a range of inorganic test dusts,
manufactured from fused aluminium oxide, primarily used for evaluating the
performance of both fuel and lubricating oil filters for internal combustion
engines, generally by gravimetric methods.
This part of ISO 12103 is to be used in conjunction with a number of other
International Standards which refer to the use of these test dusts in various
filter performance test procedures.
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INTERNATIONAL STANDARD ISO ISO 12103-2:1997(E)
Road vehicles — Test dust for filter evaluation —
Part 2:
Aluminium oxide test dust
1 Scope
This part of ISO 12103 specifies the particle size distribution of five inorganic test dusts used for the evaluation of
filters.
These dust are used in conjunction with various test procedures designed to evaluate, in general, fuel and
lubricating oil filters for internal combustion engines by gravimetric methods.
The dusts may also be used for a number of other applications, such as for abrasion tests, where distinct, known
particle size distributions of hard, abrasive material are required.
2 Test dust designation
2.1 Designation
1)
These “M” series test dusts are available in five standard grades , which are designated as follows:
— ISO 12103-M1 for nominal particle size: 5 mm
— ISO 12103-M2 for nominal particle size: 7 mm
— ISO 12103-M3 for nominal particle size: 14 mm
— ISO 12103-M4 for nominal particle size: 30 mm
— ISO 12103-M5 for nominal particle size: 55 mm
2.2 General description
All five grades of dust are made from fused aluminium oxide (Al O ) having a density of 3 960 kg/m . The bulk
2 3
3 3
density of the material, which varies with grade, is in the range 500 kg/m to 2 300 kg/m . The colour of the material
also varies, from off-white to brown, depending on the particle size range and grade.
____________
1) Suitable products are available commercially. Details can be obtained from the Secretariat to Technical Committee
ISO/TC 22 or from the ISO Central Secretariat.
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ISO
3 Particle size distribution of test dusts
3.1 Explanation
The particle size distribution of each of the five grades of dust shall conform to the limits shown in figures 1 to 5 and
tables 1 to 5, when determined by the Andreasen sedimentation method (see annex C).
It should be noted that other methods of particle size analysis, such as light scattering (laser diffraction) or the
electrical sensing zone method (Coulter principle), of insoluble dusts in liquid suspensions, will give different results
to those obtained by the Andreasen sedimentation method.
When these different methods of analysis are employed by a test laboratory, the laboratory should generate suitable
correlation data between the method by which these powders are supplied to conform (Andreasen sedimentation)
and by the method of analysis adopted by the test laboratory.
An example is given in annex A of the difference in the particle size distribution range of grade M2 dust (the most
commonly used of the five grades of dust) obtained by the laser diffraction method from a range of dust samples
representing material from both the minimum and maximum limits for the M2 grade.
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ISO
3.2 Grade M1 particle size distribution limits
See figure 1 and table 1.
Figure 1 — Particle size (Stokes diameter) as determined by Andreasen sedimentation
Table 1 — Specification limits for grade M1 test dust
Particle size Percentage by mass,
(Stokes diameter) undersize
μm min. max.
2,5 — 1,5
3,0 — 6,0
3,5 1,0 12,0
4,0 6,0 23,5
5,0 30,0 57,0
6,0 63,5 86,0
7,0 88,5 97,0
8,0 96,0 —
9,0 98,8 —
50 % mean size range: 5,2 mm – 0,4 mm.
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ISO
3.3 Grade M2 particle size distribution limits
See figure 2 and table 2.
Figure 2 — Particle size (Stokes diameter) as determined by Andreasen sedimentation
Table 2 — Specification limits for grade M2 test dust
Particle size Percentage by mass,
(Stokes diameter) undersize
μm min. max.
3,0 — 1,5
4,0 1,0 6,5
5,0 5,2 16,5
6,0 1
...
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