Road vehicles -- Test dust for filter evaluation

Véhicules routiers -- Poussière pour l'essai des filtres

General Information

Status
Published
Publication Date
10-Dec-1997
Current Stage
6060 - International Standard published
Completion Date
11-Dec-1997
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ISO 12103-2:1997 - Road vehicles -- Test dust for filter evaluation
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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
Reference number
ISO 12103-2:1997(E)
---------------------- Page: 1 ----------------------
ISO 12103-2:1997(E)
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
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet central@iso.ch
X.400 c=ch; a=400net; p=iso; o=isocs; s=central
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.
iii
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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

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
ISO 12103-2:1997(E)
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
ISO 12103-2:1997(E)
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
ISO 12103-2:1997(E)
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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