ISO 5687:1999

INTERNATIONAL ISO
STANDARD 5687
Second edition
1999-09-15
Equipment for harvesting — Combine
harvesters — Determination and
designation of grain tank capacity and
unloading device performance
Matériel de récolte — Moissonneuses-batteuses — Détermination et
désignation de la capacité et des performances du dispositif de
déchargement des trémies à grain
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
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 5687 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for
agriculture and forestry, Subcommittee SC 7, Equipment for harvesting and conservation.
This second edition cancels and replaces the first edition (ISO 5687:1981), which has been technically revised.
©  ISO 1999
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.
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Printed in Switzerland
ii
INTERNATIONAL STANDARD  © ISO ISO 5687:1999(E)
Equipment for harvesting — Combine harvesters — Determination
and designation of grain tank capacity and unloading device
performance
1 Scope
This International Standard specifies a method for determining and designating the capacity and unloading rate of
combine harvester grain tanks and unloading systems.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the lates edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
ISO 712:1998, Cereal and cereal products — Determination of moisture content — Routine reference method.
)
ISO 7970:— , .
Wheat (Triticum aestivum L.) — Specification
ISO 7971-2:1995, Cereals — Determination of bulk density, called “mass per hectolitre” — Part 2: Routine method.
3 Test method
3.1 Test preparations
3.1.1  During the test the combine harvester shall be stationary, placed horizontally on a level surface and running
at rated speeds. The unloading device shall be
...