SIST EN ISO 8224-1:2004

Traveller irrigation machines - Part 1: Operational characteristics and laboratory and field test methods (ISO 8224-1:2003)

This part of ISO 8224 specifies the operational characteristics of, and laboratory and field test methods for, traveller irrigation machines. It includes
- user-oriented technical information for inclusion in the manufacturer’s accompanying product literature,
- laboratory test procedures for evaluating the uniformity of water application on an irrigated strip by a machine operating within a specified range of conditions and for determining the maximum travelling rates the drive mechanism is able to achieve in response to specified operating conditions, and
- field test procedures for determining the uniformity of water application on a given irrigated strip under local conditions prevailing in the field at time of testing. It is applicable only to traveller irrigation machines and not to other types of irrigation machine such as centrepivot and moving lateral irrigation machines.

Mobile Beregnungsmaschinen - Teil 1: Betriebskennwerte, Prüfverfahren für Labor- und Felduntersuchungen (ISO 8224-1:2003)

Der Teil von ISO 8224 legt sowohl die Betriebskennwerte als auch die Prüfverfahren für Labor- und Feldprüfungen für Beregnungsmaschinen fest.
Er enthält
   Festlegungen für die anwenderorientierte Angabe technischer Informationen für die Veröffentlichung des Herstellers zum Produkt;
   Prüfverfahren für Laborprüfungen zur Beurteilung der Gleichförmigkeit der Wasserverteilung, die sich auf einem gegebenen Beregnungsstreifen und innerhalb eines festgelegten Parameterbereiches beim Betrieb der mobilen Beregnungsmaschine ergibt und zur Bestimmung der Höchstwerte der Geschwindigkeit, die der Antriebsmechanismus unter festgelegten Betriebsbedingungen zu erreichen vermag;
   Prüfverfahren für Feldprüfungen zur Bestimmung der Gleichförmigkeit der Wasserverteilung, die sich auf einem gegebenen Beregnungsstreifen unter den zum Zeitpunkt einer Prüfung vorherrschenden örtlichen Bedingungen ergibt.
Er gilt nur für mobile Beregnungsmaschinen und nicht für sonstige Arten von Beregnungsmaschinen, wie z. B. Kreis-und Linearberegnungsmaschinen.

Machines d'arrosage mobiles - Partie 1: Caractéristiques opérationnelles et méthodes d'essai en laboratoire et au champ (ISO 8224-1:2003)

L'ISO 8224-1:2004 spécifie les caractéristiques de fonctionnement des machines d'irrigation mobiles ainsi que les méthodes d'essai de ces machines en laboratoire et au champ. Elle comporte les informations destinées aux utilisateurs à inclure dans une documentation du produit élaborée par le fabricant; les modes opératoires d'essai en laboratoire visant à évaluer l'uniformité des apports d'eau sur une bande irriguée par une machine fonctionnant dans une gamme de conditions spécifiée et à déterminer les vitesses de déplacement maximales que le moteur d'entraînement est capable d'atteindre en réaction à des conditions de fonctionnement spécifiées; et les modes opératoires d'essai au champ visant à déterminer l'uniformité des apports d'eau sur une bande irriguée donnée, dans les conditions locales régnant dans le champ au moment des essais.
Elle est applicable uniquement aux machines d'irrigation mobiles et pas aux autres types de machines d'irrigation, telles que les machines d'irrigation de type pivot et les rampes frontales.

Prevozni namakalni stroji - 1. del: Obratovalne lastnosti in metode laboratorijskih in terenskih preskusov (ISO 8224-1:2003)

Ta del standarda ISO 8224 določa obratovalne lastnosti in metode laboratorijskih in terenskih preskusov za prevozne namakalne stroje. Standard zajema:
– tehnične informacije, namenjene uporabnikom, za vključitev v proizvajalčevo dokumentacijo o izdelku,
– laboratorijske preskusne postopke za določanje enakomernosti porazdelitve vode na namakalnem pasu s strojem, ki deluje v okviru določenih pogojev, in za določanje najvišjih hitrosti pogonskega stroja glede na določene delovne pogoje ter
– postopke terenskih preskusov za določanje enakomernosti porazdelitve vode na danem namakalnem pasu v okviru določenih pogojev, ki prevladujejo na namakalnem pasu v času preskušanja. Velja samo za prevozne namakalne stroje in ne za druge vrste namakalnih naprav, kot so vrtljivi in bočni namakalni stroji.

General Information

• Status: Published
• Publication Date: 31-Dec-2003
• ICS: 65.060.35 - Irrigation and drainage equipment
• Technical Committee: IMKG - Machinery for agriculture and forestry
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jan-2004
• Due Date: 01-Jan-2004
• Completion Date: 01-Jan-2004
• Ref Project: EN ISO 8224-1:2003 - Traveller irrigation machines - Part 1: Operational characteristics and laboratory and field test methods (ISO 8224-1:2003)

Relations

• Parent: SIST EN 12324-1:1999 - Irrigation techniques - Reel machine systems - Part 1: Size series
• Effective Date: 22-Dec-2008
• Amended By: SIST EN ISO 8224-1:2004/A1:2013 - Traveller irrigation machines - Part 1: Operational characteristics and laboratory and field test methods - Amendment 1 (ISO 8224-1:2003/AMD 1:2011)
• Effective Date: 01-Dec-2013

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Prevozni namakalni stroji - 1. del: Obratovalne lastnosti in metode laboratorijskih in terenskih preskusov (ISO 8224-1:2003)Mobile Beregnungsmaschinen - Teil 1: Betriebskennwerte, Prüfverfahren für Labor- und Felduntersuchungen (ISO 8224-1:2003)Machines d'arrosage mobiles - Partie 1: Caractéristiques opérationnelles et méthodes d'essai en laboratoire et au champ (ISO 8224-1:2003)Traveller irrigation machines - Part 1: Operational characteristics and laboratory and field test methods (ISO 8224-1:2003)65.060.35Namakalna in drenažna opremaIrrigation and drainage equipmentICS:Ta slovenski standard je istoveten z:EN ISO 8224-1:2003SIST EN ISO 8224-1:2004en01-januar-2004SIST EN ISO 8224-1:2004SLOVENSKI
STANDARD



SIST EN ISO 8224-1:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 8224-1February 2003ICS 65.060.35English versionTraveller irrigation machines - Part 1: Operational characteristicsand laboratory and field test methods (ISO 8224-1:2003)Machines d'arrosage mobiles - Partie 1: Caractéristiquesopérationnelles et méthodes d'essai en laboratoire et auchamp (ISO 8224-1:2003)Mobile Beregnungsmaschinen - Teil 1: Betriebskennwerte,Prüfverfahren für Labor- und Felduntersuchungen (ISO8224-1:2003)This European Standard was approved by CEN on 18 December 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 8224-1:2003 ESIST EN ISO 8224-1:2004



EN ISO 8224-1:2003 (E)2CORRECTED
2003-03-19ForewordThis document (EN ISO 8224-1:2003) has been prepared by Technical Committee ISO/TC 23"Tractors and machinery for agriculture and forestry" in collaboration with Technical CommitteeCEN/TC 334 "Irrigation techniques", the secretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard, either by publication of anidentical text or by endorsement, at the latest by August 2003, and conflicting national standards shallbe withdrawn at the latest by August 2003.According to the CEN/CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg,Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom.Endorsement noticeThe text of ISO 8224-1:2003 has been approved by CEN as EN ISO 8224-1:2003 without anymodifications.NOTE
Normative references to International Standards are listed in Annex ZA (normative).SIST EN ISO 8224-1:2004



EN ISO 8224-1:2003 (E)3Annex ZA(normative)Normative references to international publicationswith their relevant European publicationsThis European Standard incorporates by dated or undated reference, provisions from other publications.These normative references are cited at the appropriate places in the text and the publications are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publicationsapply to this European Standard only when incorporated in it by amendment or revision. For undatedreferences the latest edition of the publication referred to applies (including amendments).NOTE Where an International Publication has been modified by common modifications, indicated by(mod.), the relevant EN/HD applies.PublicationYearTitleENYearISO 115452001Agricultural irrigation equipment- Centre-pivot and movinglateral irrigation machines withsprayer or sprinkler nozzles -Determination of uniformity ofwater distributionEN ISO 115452001SIST EN ISO 8224-1:2004



SIST EN ISO 8224-1:2004



Reference numberISO 8224-1:2003(E)© ISO 2003
INTERNATIONAL STANDARD ISO8224-1Second edition2003-02-01Corrected version2004-02-15Traveller irrigation machines — Part 1: Operational characteristics and laboratory and field test methods Machines d'irrigation mobiles — Partie 1: Caractéristiques de fonctionnement et méthodes d'essai en laboratoire et au champ
SIST EN ISO 8224-1:2004



ISO 8224-1:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
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ISO 2003 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 either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 • CH-1211 Geneva 20 Tel.
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ii © ISO 2003 — All rights reserved
SIST EN ISO 8224-1:2004



ISO 8224-1:2003(E) © ISO 2003 — All rights reserved iii Contents Page Foreword.iv 1 Scope.1 2 Normative references.1 3 Terms, definitions and symbols.1 4 Functional aspects and technical information.8 5 Test specifications.8 5.1 General.8 5.2 Test liquid.8 5.3 Calculation of field resistance coefficient.9 5.4 Sampling and general preparation of test traveller irrigation machine.10 5.5 Specific machines.10 6 Laboratory uniformity tests.10 6.1 General.10 6.2 Test conditions.11 6.3 Apparatus.14 6.4 Required pre-test data.17 6.5 Procedure.18 6.6 Processing laboratory uniformity test data.20 6.7 Presentation of results.22 7 Laboratory drive tests.27 7.1 General.27 7.2 Laboratory drive test equipment.27 7.3 Laboratory drive test conditions.27 7.4 Laboratory drive test procedure.28 7.5 Laboratory drive test results.28 8 Field uniformity tests.28 8.1 General.28 8.2 Apparatus.29 8.3 Field uniformity test procedure.30 8.4 Field uniformity test data processing and results.32 8.5 Graphs of field uniformity test results.36
SIST EN ISO 8224-1:2004



ISO 8224-1:2003(E) iv © ISO 2003 — All rights reserved 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 8224-1 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 second edition cancels and replaces the first edition (ISO 8224-1:1985), which has been technically revised. ISO 8224 consists of the following parts, under the general title Traveller irrigation machines: =Part 1: Operational characteristics and laboratory and field test methods =Part 2: Softwall hose and couplings — Test methods This corrected version of ISO 8824-1:2003 incorporates the following corrections. The French title has been corrected. A redundant reference to the three travelling rate settings has been deleted from 6.2.2 b). Cross-references have been corrected. A typographical error in the title of Figure 6 has been corrected. The y-axis legend fo Figure 7 d) has been corrected to indicate travel speed. The arrows indicating pressure and flow rate in Figure 7 e) now correspond to the appropriate longitudinal variations shown on the graph. The reference to the role of the third pressure gauge in 8.2.4 has been clarified. In 8.4.3.1 d), the explanation of the ratio has been given its true sense. The same has been done in respect of the different ratio mentioned in 8.4.3.2.
SIST EN ISO 8224-1:2004



INTERNATIONAL STANDARD ISO 8224-1:2003(E) © ISO 2003 — All rights reserved 1 Traveller irrigation machines — Part 1: Operational characteristics and laboratory and field test methods 1 Scope This part of ISO 8224 specifies the operational characteristics of, and laboratory and field test methods for, traveller irrigation machines. It includes =user-oriented technical information for inclusion in the manufacturer’s accompanying product literature, =laboratory test procedures for evaluating the uniformity of water application on an irrigated strip by a machine operating within a specified range of conditions and for determining the maximum travelling rates the drive mechanism is able to achieve in response to specified operating conditions, and =field test procedures for determining the uniformity of water application on a given irrigated strip under local conditions prevailing in the field at time of testing. It is applicable only to traveller irrigation machines and not to other types of irrigation machine such as centre-pivot
and moving lateral irrigation machines. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 7749-2:1990, Irrigation equipment — Rotating sprinklers — Part 2: Uniformity of distribution and test methods ISO 8026, Agricultural irrigation equipment — Sprayers — General requirements and test methods ISO 11545, Agricultural irrigation equipment — Centre-pivot and moving lateral irrigation machines with sprayer or sprinkler nozzles — Determination of uniformity of water distribution 3 Terms, definitions and symbols For the purposes of this document, the following terms, definitions and symbols (see Table 1) apply. 3.1 traveller irrigation machine machine designed to irrigate a field sequentially, strip by strip, by causing, through various coiling techniques, a cart equipped with a travelling water distribution system (sprinkler or gun-type sprinkler, combination of sprinklers and guns, boom with set of sprinklers, sprayers or other kinds of water distribution devices) to travel SIST EN ISO 8224-1:2004



ISO 8224-1:2003(E) 2 © ISO 2003 — All rights reserved across a field, and which is intended to be moved to, and operated from, several supply points established in advance in the field NOTE There are three types of traveller irrigation machine, each having a structure that includes a reel, spool or winch and a travelling water distribution system. =Type 1 traveller irrigation machines feature a stationary reel with a hydraulic motor that coils and drags a distribution tube and a travelling cart that supports a water distribution system — commonly referred to as “reel machines” (see 3.2). =Type 2 traveller irrigation machines feature a travelling winch with a hydraulic motor that supports a water distribution system, coils a tow cable and drags a distribution hose — commonly referred to as “travellers” (see 3.3). =Type 3 traveller irrigation machines feature a travelling reel that supports a water distribution system with self-propelled wheels and coiling a stationary distribution tube — commonly referred to as “self-propelled reel machines” (see 3.4) — or they can be engine-driven machines. 3.2 reel machine type 1 traveller irrigation machine featuring a stationary reel coiling a distribution tube that drags a travelling cart on which is installed a water distribution system (most often a gun-type sprinkler) and carries water to the water distribution system See Figure 1.
Key 1 water source 2 stationary reel 3 source connection conduit/hose 4 distribution tube — dragged 5 cart 6 water distribution device or system — gun, sprinkler, boom (on cart) 7 direction of movement Figure 1 — Sketch of operating type 1 traveller irrigation machine — Reel machine 3.3 traveller type 2 traveller irrigation machine featuring a travelling winch with hydraulic motor supporting a water distribution system, which coils a cable and drags a distribution hose See Figure 2. SIST EN ISO 8224-1:2004



ISO 8224-1:2003(E) © ISO 2003 — All rights reserved 3
Key 1 tow cable anchor 2 tow cable 3 cart 4 water distribution device or system — gun, sprinkler, boom (on cart) 5 water source 6 distribution hose — dragged 7 direction of movement Figure 2 — Sketch of operating type 2 traveller irrigation machine — Traveller 3.4 self-propelled reel machine type 3 traveller irrigation machine featuring a stationary distribution tube that carries irrigation water to a travelling structure accommodating a reel on which the distribution tube is coiled, a drive train, self-propelled wheels and water distribution system See Figure 3.
Key 1 water source 2 distribution tube 3 self-propelled structure 4 water distribution device or system — gun, sprinkler, boom (on self-propelled structure) 5 direction of movement Figure 3 — Sketch of operating type 3 traveller irrigation machine — Self-propelled reel machine SIST EN ISO 8224-1:2004



ISO 8224-1:2003(E) 4 © ISO 2003 — All rights reserved 3.5 water distribution system sprinkling and travelling part of a traveller irrigation machine through which irrigation water is distributed and applied over a strip EXAMPLE Sprinkler, gun-type sprinkler, combination of sprinklers and gun-type sprinklers, boom with set of sprinklers or sprayers 3.6 field resistance coefficient α coefficient characterizing the resistance drag force exerted by the field on a traveller irrigation machine whose water distribution system is travelling along a strip 3.7 distribution tube in-field supply tube polyethylene tube supply line that conveys irrigation water along an irrigated strip to the water distribution system of a type 1 traveller irrigation machine (reel machine) and to the self-propelled structure of a type 3 traveller irrigation machine (self-propelled reel machine), and which can be partly lying on the field and partly coiled on the spool 3.8 distribution hose softwall distribution hose in-field supply hose supply hose that conveys water from an irrigation water source along a strip to the water distribution system of a type 2 traveller irrigation machine (traveller) 3.9 source connection hose source connection conduit supply conduit or hose used to connect an irrigation water source to the stationary structure of a type 1 traveller irrigation machine (reel machine) 3.10 irrigation strip lane portion of a field irrigated sequentially by a traveller irrigation machine, typically consisting of a rectangle a few decametres wide by a few hundred metres long with an effective zone wetted by the water distribution system that significantly exceeds the dimensions of the strip and especially the width; some overlapping of the wetted patterns over adjacent strips often being required to maintain an acceptable uniformity of water application over the entire field 3.11 irrigation strip width lane width strip spacing spacing between strips, i.e. distance between two adjacent travel paths of a cart 3.12 travel path path within a strip where the water distribution system is supported during its irrigation travel on wheels or skids and where the distribution tube, distribution hose or tow cable is laid in contact with the field and dragged SIST EN ISO 8224-1:2004



ISO 8224-1:2003(E) © ISO 2003 — All rights reserved 5 3.13 length of travel distance a traveller irrigation machine moves along its travel path within a strip, from starting point to final stop position, not exceeding the length of the distribution tube in the case of types 1 and 3 irrigation machines or twice the length of the distribution hose in the case of type 2 3.14 spool component of a traveller irrigation machine, consisting of a drum with flanges, rotating on an axial shaft and designed for storing the part of the distribution tube (types 1 and 3 irrigation machines) or tow cable (type 2 irrigation machines) not lying in contact with the field; in the case of certain type 2 traveller irrigation machines, an additional component designed for storing the distribution hose when the machine is not irrigating See Figure 4. 3.15 coefficient of variation Cv ratio of the standard deviation to the mean of a variable that is repeatedly measured SIST EN ISO 8224-1:2004



ISO 8224-1:2003(E) 6 © ISO 2003 — All rights reserved
Key A structure
1 spool drum B distribution tube
2 shaft of spool C cart or trolley
3 brakes of spool C1 current cart or trolley position
4 control device for water distribution system travel C2 most distant cart or trolley position
5 machine-source connection hose (supply hose)
6 spool support — fixed or orientable turntable
7 wheel
8 chassis
9 external power shaft
10 stabilizer legs
11 distribution tube guide mechanism
12 cart (or trolley) lifting device d spool drum diameter
13 hydraulic drive (turbine or piston) and drive train ∅ distribution tube outer diameter
14 distribution tube (usually polyethylene tube) Lref distribution tube reference length
15 cart skid L current length of moving portion of distribution tube laid down and dragged on field
16 water distribution system — irrigation sprinkler(s), sector-adjustable gun-type sprinkler, boom or other system
17 cart wheel Figure 4 — Type 1 traveller irrigation machine (reel machine) — Main parts SIST EN ISO 8224-1:2004



ISO 8224-1:2003(E) © ISO 2003 — All rights reserved 7 Table 1 — Symbols Symbol Description Unit d Spool drum diameter m E Irrigation strip width, also called strip spacing m F Field resistance force N Fbench Actual resistance force applied using the bench N Fref Desired resistance force N hAi Mean application depth at line i collected while the water distribution system travels a segment equal to the wetted radius mm hAs Mean application depth averaged over the strip mm hGA Gross application depth mm hGAseg Gross application depth over a segment mm Ii Reference application rate for line i mm/h Is Reference application rate for the strip mm/h L Length of part of the distribution tube or distribution hose lying on the field and dragged (types 1 and 2), or length of part of distribution tube lying on the field (type 3) m Lref Length of the distribution tube or hose m Ls Length of the strip m Ltravel Travel distance of the water distribution system (m) P Weight per unit length of the distribution tube or hose when full of water N/m PTotal Total weight of the traveller irrigation machine when full of water N q Test flow rate m3/h Rwet Wetted radius m s Spacing between collectors on a line m T Duration time for irrigation h ν Travel speed of the water distribution system m/h νi Travel speed of the water distribution system at line i, computed as the mean travel speed over a segment equal to the wetted radius m/h νs Travel speed of the water distribution system computed as the mean travel speed over the strip m/h α Field resistance and slope coefficient (dimensionless)∆Lseg Segment length (travel distance across a segment) m ∆Vseg Volume of water distributed over a segment m3 ∅ Distribution tube or hose diameter mm
SIST EN ISO 8224-1:2004



ISO 8224-1:2003(E) 8 © ISO 2003 — All rights reserved 4 Functional aspects and technical information The recommended range of operation and other functional aspects relevant for the users of the traveller irrigation machine shall be specified and included in the documentation accompanying the traveller irrigation machine. These shall include at least the following specifications: a) recommended minimum and maximum working pressures at the machine inlet connection; b) recommended maximum permissible pressure in any situation at the machine inlet; c) recommended minimum and maximum flow rates; d) distribution characteristics of the recommended water distribution system or systems; e) length, diameter and wall thickness of the distribution tube or distribution hose; f) recommended maximum road towing speed; g) recommended maximum land gradient when operating; h) recommended maximum coiling speed; i) recommended maximum external power shaft speed, if applicable; j) safety instructions; k) operating instructions. 5 Test specifications 5.1 General The tests include =laboratory uniformity tests (see Clause 6), =laboratory drive tests (see Clause 7), and =field uniformity tests (see Clause 8). Conduct the tests in accordance with the following specifications for test liquids and machine sampling and preparation. 5.2 Test liquid 5.2.1 General Traveller irrigation machines are intended to operate with unfiltered or coarsely filtered irrigation water that may occasionally or continuously carry clogging materials of various types, sizes and concentrations. Consequently, traveller irrigation machine hydraulic control lines or hydraulic drive circuits are often equipped with filters or centrifugal separators. SIST EN ISO 8224-1:2004



ISO 8224-1:2003(E) © ISO 2003 — All rights reserved 9 5.2.2 Field uniformity tests For the standard test liquid in field uniformity tests, use the irrigation water available on the test field, unmodified for the purpose of the test by filtration, injection of chemicals or by any other process, unless specifically requested by the client. 5.2.3 Laboratory uniformity and drive tests For the standard test liquid in laboratory uniformity tests and laboratory drive tests, use irrigation water at a temperature of between 4°C and 35°C, in which the concentration of clogging materials is not more than 1 g/l and which has passed through =a 5 mm aperture screen, if the water distribution device is a gun-type sprinkler, or =a 500 µm aperture screen, if the water distribution device is not a gun-type sprinkler. Optionally, upon client request, after running the traveller irrigation machine reference tests with the standard test liquid, the tests may be run again with water having an increased range of sizes or concentrations, or both, of clogging materials, or with other liquids together with extended information on the traveller irrigation machine's performance. 5.3 Calculation of field resistance coefficient Calculate the value of the coefficient, α, characterizing the resistance drag force exerted by the field on a traveller irrigation machine when its water distribution system travels along a strip, as follows. =For types 1 and 2 traveller irrigation machines: as the ratio between the field resistance force and the weight of the part of the distribution tube or hose lying on the field and being dragged at that time, using the equation FPLα=× where α is the field resistance coefficient (dimensionless); F is the field resistance force, in newtons; P is the weight per unit length of the distribution tube or hose full of water, in newtons per metre; L is the length of that part of the distribution tube or hose lying on the field and dragged, in metres. =For type 3 traveller irrigation machines: as the ratio between the field resistance force and the weight of the machine inclusive of the coiled part of the tube, using the equation ()TotalFPPLα=−× where α is the field resistance coefficient (dimensionless); F is the field resistance force, in newtons; P is the weight per unit length of the distribution tube or hose full of water, in newtons per metre; L is the length of that part of the distribution tube or distribution hose lying on the field, in metres; PTotal is the total weight of the traveller irrigation machine full of water, in newtons. SIST EN ISO 8224-1:2004



ISO 8224-1:2003(E) 10 © ISO 2003 — All rights reserved 5.4 Sampling and general preparation of test traveller irrigation machine 5.4.1 Type tests a) Select the sample traveller irrigation machine to be tested from a series of products representative of the model, unmodified for the purpose of the tests. Select water distribution system components (e.g. nozzles) in accordance with the manufacturer’s operating instructions and to meet press
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