SIST EN ISO 11545:2011
(Main)Agricultural irrigation equipment - Centre-pivot and moving lateral irrigation machines with sprayer or sprinkler nozzles - Determination of uniformity of water distribution (ISO 11545:2009)
Agricultural irrigation equipment - Centre-pivot and moving lateral irrigation machines with sprayer or sprinkler nozzles - Determination of uniformity of water distribution (ISO 11545:2009)
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.
Landwirtschaftliche Bewässerungsausrüstung - Kreis- und Linearberegnungsmaschinen mit Düsen oder Regnern - Bestimmung der Gleichförmigkeit der Wasserverteilung (ISO 11545:2009)
Diese Internationale Norm legt ein Feldverfahren fest, mit dem die Gleichförmigkeit der Wasserverteilung von mit Düsen oder Regnerdüsen bestückten Kreis- und Linearberegnungsmaschinen auf dem Feld bestimmt werden kann. Das Verfahren zur Berechnung des Gleichförmigkeitskoeffizienten ist ebenfalls festgelegt.
Diese Internationale Norm gilt für Beregnungsmaschinen, deren Wasserverteileinrichtung mindestens 1,5 m über dem Erdboden angeordnet ist und bei denen die Wasserverteilung aufeinander folgender Wasserverteil¬einrichtungen überlappend erfolgt.
Diese Internationale Norm gilt nicht für die Bewertung von Kreisberegnungsmaschinen, die mit verschieden¬artigen Eckenausgleichssystemen ausgerüstet sind.
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)
L'ISO 11545:2009 spécifie une méthode de détermination sur le terrain de l'uniformité de la distribution d'eau des pivots et des rampes frontales équipés de buses d'arrosage ou d'asperseurs. Elle spécifie également la méthode de calcul du coefficient d'uniformité.
L'ISO 11545:2009 est applicable aux machines d'irrigation dont le dispositif d'application d'eau se trouve à plus de 1,5 m au-dessus de la surface du sol et sur lesquelles la distribution d'eau provenant de dispositifs voisins se recouvre.
Elle n'est pas applicable à l'évaluation des pivots équipés de divers dispositifs d'application dans les angles.
Oprema za namakanje kmetijskih površin - Naprave z vrtljivimi in bočnimi krili s škropilnimi in razpršilnimi šobami - Določanje enakomernosti porazdelitve vode (ISO 11545:2009)
Ta mednarodni standard opredeljuje metodo na terenu, ki določa, da naprava z vrtljivimi in bočnimi krili, opremljena s škropilnimi in razpršilnimi šobami, enakomerno porazdeli vodo na terenu. Opredeljen je tudi izračun koeficienta enakomernosti. Ta mednarodni standard se uporablja za stroje za namakanje kmetijskih površin, za katere je naprava, ki dovaja vodo, več kot 1,5 m nad površino tal in za katere se porazdelitev vode iz zaporednih naprav prekriva. Ne uporablja se za vrednotenje strojev za namakanje z osrednjo osjo, opremljenih z različnimi stranskimi napravami.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 11545:2011
01-november-2011
1DGRPHãþD
SIST EN ISO 11545:2001
2SUHPD]DQDPDNDQMHNPHWLMVNLKSRYUãLQ1DSUDYH]YUWOMLYLPLLQERþQLPLNULOLV
ãNURSLOQLPLLQUD]SUãLOQLPLãREDPL'RORþDQMHHQDNRPHUQRVWLSRUD]GHOLWYHYRGH
,62
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
SIST EN ISO 11545:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 11545:2011
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SIST EN ISO 11545:2011
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.
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SIST EN ISO 11545:2011
EN ISO 11545:2009 (E)
Contents Page
Foreword .3
2
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SIST EN ISO 11545:2011
EN ISO 11545:2009 (E)
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.
3
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SIST EN ISO 11545:2011
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SIST EN ISO 11545:2011
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
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SIST EN ISO 11545:2011
ISO 11545:2009(E)
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ii © ISO 2009 – All rights reserved
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SIST EN ISO 11545:2011
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 2009 – All rights reserved iii
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SIST EN ISO 11545:2011
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
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SIST EN ISO 11545:2011
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
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SIST EN ISO 11545:2011
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 production, in which case that distance is excluded
2.10
wetted radius
r
w
distance measured from the centreline of a sprayer or sprinkler to the last collector with measurable water or
estimated from the manufacturer's catalogue data as half of the diameter of coverage
2.11
applied depth
d
i
adjusted volume of water caught in each collector in an array of collectors plus the average amount of water
that evaporates while the water is in the collector, divided by the area of the collector opening
2.12
collector
receptacle into which the water is deposited during a water distribution test
2.13
client
person(s) or organization for which a test is performed
2.14
tester
person(s) or organization that conduct(s) a test
3 Test conditions and equipment
3.1 Collectors
3.1.1 All collectors used for a test shall be identical and shaped such that water does not splash in or out.
The lip of the collector shall be symmetric and without depressions. The height of each collector shall be at
least twice the maximum depth of the water collected during the test, but not less than 150 mm. It shall have a
circular opening with sharp edges free from deformities. The diameter shall be at least half the height, but
shall not be less than 85 mm. To minimize measurement error, it is recommended that testers use collectors
that are as large as practicable.
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SIST EN ISO 11545:2011
ISO 11545:2009(E)
3.1.2 Place the collectors uniformly along two or more straight lines perpendicular to the direction of travel
of the machine. The maximum collector spacing within each line shall be in accordance with Table 1.
Collectors shall not be located where the sprayer or sprinkler pattern is affected by the tower structural
components.
Table 1 — Maximum spacing for collectors
Sprayer or sprinkler wetted radius Maximum collector spacing
m m
< 10 3
W 10
5
To minimize systematic errors, collectors of adjacent lines should be offset. The offset should be 1/nth the
collector spacing, where n is the number of collector lines (see Figures 1 and 2 for collector layout detail).
Ensure that the distance between the collectors is not a multiple of the distance between the sprayers or
sprinklers. Collectors should be moved to avoid wheel tracks. Record the location of the collectors.
3.1.3 Place the lines of the collectors so that the distance between the lines is as follows.
For centre-pivot irrigation machines, locate the collectors along two or more lines extending radially from the
pivot point. Ensure that the distance between distal ends of the radial lines is no more than 50 m. Record the
spacing pattern (see Figure 1).
For moving lateral irrigation machines, locate the collectors along two or more lines parallel to the pipeline.
Ensure that the lines of the collectors extend across the effective length of the machine and are not more than
50 m apart. Record the spacing pattern (see Figure 2).
3.1.4 Locate the collectors so that obstructions, such as the crop canopy, do not interfere with the
measurement of water application. When an obstruction is higher than the elevation of the collector, but below
the water-distribution device height, maintain a horizontal unobstructed distance of at least twice the height of
the obstruction on both sides of the collector rows (see Figure 3, case A). For systems with water-distribution
devices that operate below the crop canopy height, maintain a horizontal unobstructed distance of at least
1,25 times the wetted radius of the sprayer or sprinkler on each side of the collector rows (see Figure 3,
case B).
3.1.5 The entrance portion of the collectors shall be level. When wind velocities during the test are expected
to exceed 2 m/s, the entrance of the collectors should be no more than 0,3 m above ground or crop canopy.
The discharge height of the sprayer or sprinkler shall be at least 1 m above the top of the collector. Record the
height of the sprayer or sprinkler nozzles and the entrance to the collectors.
3.2 Wind
3.2.1 Measure the wind velocity during the test period with a rotating anemometer or equivalent device.
3.2.2 Determine the wind direction, relative to the line of collectors, with a vane indicating at least eight
points of the compass.
3.2.3 Locate the equipment for measuring wind velocity at a height of 2 m and within 200 m of the test site,
in a location representative of the wind conditions at the test site.
3.2.4 Ensure that the anemometer has a threshold velocity not exceeding 0,3 m/s and is capable of
measuring the actual velocity to within ± 10 %.
3.2.5 The accuracy of the test procedure begins to decrease when the wind velocity exceeds 1 m/s. The
test should not be used as a valid measure of the uniformity or performance of a sprinkler package if the wind
velocity exceeds 5 m/s. To test at wind velocities greater than 5 m/s, the client and tester should understand
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SIST EN ISO 11545:2011
ISO 11545:2009(E)
the limitations of the test results. Measure and record the wind velocity and the direction prevailing at the
beginning and end of the test and during the test at intervals not longer than 15 min.
3.3 Evaporation
3.3.1 The test should be conducted during periods that minimize the effect of evaporation, such as at night
or during early daylight hours.
3.3.2 To minimize the effect of evaporation from collectors during the test, measure and record the volume
of water in each collector as soon as possible after the collector is no longer within the range of the water
pattern. To adjust the volume caught in each collector for evaporation loss, estimate the time during which
each collector contains water, i.e. from the time the collector is first within the range of the water pattern until
the collector volume is measured.
3.3.3 To account for evaporation from the collectors, place a minimum of three control collectors containing
the anticipated catch at the test site. Record the volume of water in each collector before and after the test
and record the time of day each collector was put in place and when it was recorded after the test. Calculate
the mean evaporation rate from the
...
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