EN ISO 11545:2009

SLOVENSKI STANDARD
01-november-2011
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Agricultural irrigation equipment - Centre-pivot and moving lateral irrigation machines
with sprayer or sprinkler nozzles - Determination of uniformity of water distribution (ISO
11545:2009)
Landwirtschaftliche Bewässerungsausrüstung - Kreis- und Linearberegnungsmaschinen
mit Düsen oder Regnern - Bestimmung der Gleichförmigkeit der Wasserverteilung (ISO
11545:2009)
Matériel agricole d'irrigation - Pivots et rampes frontales équipés de buses d'arrosage ou
d'asperseurs - Méthode de détermination de l'uniformité de la distribution d'eau (ISO
11545:2009)
Ta slovenski standard je istoveten z: EN ISO 11545:2009
ICS:
65.060.35 Namakalna in drenažna Irrigation and drainage
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 11545
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2009
ICS 65.060.35 Supersedes EN ISO 11545:2001
English Version
Agricultural irrigation equipment - Centre-pivot and moving
lateral irrigation machines with sprayer or sprinkler nozzles -
Determination of uniformity of water distribution (ISO
11545:2009)
Matériel agricole d'irrigation - Pivots et rampes frontales Landwirtschaftliche Bewässerungsausrüstung - Kreis- und
équipés de buses d'arrosage ou d'asperseurs - Linearberegnungsmaschinen mit Düsen oder Regnern -
Détermination de l'uniformité de la distribution d'eau (ISO Bestimmung der Gleichförmigkeit der Wasserverteilung
11545:2009) (ISO 11545:2009)
This European Standard was approved by CEN on 21 October 2009.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11545:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 11545:2009) has been prepared by Technical Committee ISO/TC 23 "Tractors and
machinery for agriculture and forestry" in collaboration with Technical Committee CEN/TC 334 “Irrigation
techniques” the secretariat of which is held by AENOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by May 2010, and conflicting national standards shall be withdrawn at the
latest by May 2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 11545:2001.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 11545:2009 has been approved by CEN as a EN ISO 11545:2009 without any modification.

INTERNATIONAL ISO
STANDARD 11545
Third edition
2009-11-15
Agricultural irrigation equipment —
Centre-pivot and moving lateral irrigation
machines with sprayer or sprinkler
nozzles — Determination of uniformity of
water distribution
Matériel agricole d'irrigation — Pivots et rampes frontales équipés de
buses d'arrosage ou d'asperseurs — Détermination de l'uniformité de la
distribution d'eau
Reference number
ISO 11545:2009(E)
©
ISO 2009
ISO 11545:2009(E)
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ii © ISO 2009 – All rights reserved

ISO 11545:2009(E)
Contents Page
Foreword .iv
1 Scope.1
2 Terms and definitions .1
3 Test conditions and equipment .2
3.1 Collectors .2
3.2 Wind.3
3.3 Evaporation.4
3.4 Elevation.4
4 Test procedures.4
5 Calculations .5
6 Evaluation.6
7 Reporting of test results.7
Annex A (normative) Sample data sheets and test report forms for required information .10
Bibliography.16

ISO 11545:2009(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 11545 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and
forestry, Subcommittee SC 18, Irrigation and drainage equipment and systems.
This third edition cancels and replaces the second edition (ISO 11545:2001), which has been technically
revised.
iv © ISO 2009 – All rights reserved

INTERNATIONAL STANDARD ISO 11545:2009(E)

Agricultural irrigation equipment — Centre-pivot and moving
lateral irrigation machines with sprayer or sprinkler nozzles —
Determination of uniformity of water distribution
1 Scope
This International Standard specifies an in-field method for determining the uniformity of water distribution in
the field from centre-pivot and moving lateral irrigation machines equipped with sprayer or sprinkler nozzles.
The calculation of the coefficient of uniformity is also specified.
This International Standard is applicable to agricultural irrigation machines for which the water application
device is more than 1,5 m above the soil surface and for which the water distribution from successive devices
overlaps.
It is not applicable to the evaluation of centre-pivot irrigation machines equipped with various corner arm
application devices.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
centre-pivot irrigation machine
automated irrigation machine consisting of a number of self-propelled towers supporting a pipeline rotating
around a pivot point and through which water supplied at the pivot point flows radially outward for distribution
by sprayers or sprinklers located along the pipeline
2.2
moving lateral irrigation machine
automated irrigation machine consisting of a number of self-propelled towers supporting a pipeline transverse
to the direction of travel moving in such a way that the pipeline remains generally in a straight line, traversing
the field in a straight path, and through which water supplied to the irrigation machine at any point along the
pipeline is distributed over a basically rectangular area by sprayers or sprinklers located along the pipeline
2.3
sprinkler
water-distribution device of a variety of sizes and types
EXAMPLE Impact sprinkler, fixed nozzle sprinkler, irrigation gun.
2.4
irrigation sprayer
device that discharges water in the form of fine jets or in a fan shape without rotational movement of its parts
2.5
sprinkler package
collection of water-distribution devices fitted to the outlets of either centre-pivot or moving lateral irrigation
machines, either with or without moving components, piping, pressure or flow-control devices and supporting
plumbing designed for a specific irrigation machine and set of operating parameters
ISO 11545:2009(E)
2.6
endgun
set of one or more sprayers or sprinklers installed on the distal end(s) of a centre-pivot or moving lateral
irrigation machine to increase the irrigated area, and usually operating for only a portion of the time to conform
to field boundaries
2.7
test pressure
pressure of a centre-pivot or moving lateral irrigation machine measured at the first available outlet
downstream from the elbow or the tee at the top of the inlet to the pipeline
2.8
effective radius
radius of the circular-field area to be irrigated by a centre-pivot irrigation machine, measured as the distance
from the pivot point to the terminal sprayer or sprinkler on the pipeline
2.9
effective length
dimension parallel to the pipeline of a moving lateral machine, measured as the distance between the two
most distant end sprayers or sprinklers on the pipeline, except where a portion of the area under the pipeline
is used for the water supply system and not for crop producti
...