DIN EN ISO 11545-2010 Agricultural irrigation equipment - Centre-pivot and moving lateral irrigation machines with sprayer or sprinkler nozzles - Determination of uniformity of wat.pdf

1、April 2010 Translation by DIN-Sprachendienst.English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS

2、65.060.35!$b9o“1632276www.din.deDDIN EN ISO 11545Agricultural irrigation equipment Centre-pivot and moving lateral irrigation machines with sprayer orsprinkler nozzles Determination of uniformity of water distribution (ISO 11545:2009)English translation of DIN EN ISO 11545:2010-04Landwirtschaftliche

3、 Bewsserungsausrstung Kreis- und Linearberegnungsmaschinen mit Dsen oder Regnern Bestimmung der Gleichfrmigkeit der Wasserverteilung (ISO 11545:2009)Englische bersetzung von DIN EN ISO 11545:2010-04Matriel agricole dirrigation Pivots et rampes frontales quips de buses darrosage ou dasperseurs Dtermi

4、nation de luniformit de la distribution deau (ISO 11545:2009)Traduction anglaise de DIN EN ISO 11545:2010-04SupersedesDIN EN ISO 11545:2001-12www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 21 pages04.10 DIN EN ISO 11545:2010-04 2 A com

5、ma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 23 “Tractors and machinery for agriculture and forestry” (Secretariat: AFNOR; France) in collaboration with Technical Committee CEN/TC 334 “Irrigation techniques” (Secretariat: AENOR, Sp

6、ain). The responsible German body involved in its preparation was the Normenausschuss Wasserwesen (Water Practice Standards Committee), Working Committee NA 119-02-14 AA Bewsserung. Amendments This standard differs from DIN EN ISO 11545:2001-12 as follows: a) The standard has been editorially revise

7、d. b) Clause 2 “Terms and definitions” has been extended. c) Annex A (normative) “Sample data sheets and test report forms for required information” has been revised and a national footnote has been included. Previous editions DIN EN ISO 11545: 2001-12 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NO

8、RM EN ISO 11545 November 2009 ICS 65.060.35 Supersedes EN ISO 11545:2001English 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) Matriel agricole dirr

9、igation - Pivots et rampes frontales quips de buses darrosage ou dasperseurs - Dtermination de luniformit de la distribution deau (ISO 11545:2009) Landwirtschaftliche Bewsserungsausrstung - Kreis- und Linearberegnungsmaschinen mit Dsen oder Regnern - Bestimmung der Gleichfrmigkeit der Wasserverteilu

10、ng (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

11、 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 responsib

12、ility 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, Icelan

13、d, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue M

14、arnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11545:2009: EContents DIN EN ISO 11545:2010-04 EN ISO 11545:2009 (E) 2 Page Foreword3 1 Scope 4 2 Terms and definitions .4 3 Test conditions and equ

15、ipment5 3.1 Collectors .5 3.2 Wind 6 3.3 Evaporation 7 3.4 Elevation .7 4 Test procedures.7 5 Calculations8 6 Evaluation.9 7 Reporting of test results 10 Annex A (normative) Sample data sheets and test report forms for required information 13 Bibliography. 19 Foreword techniques” the secretariat of

16、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 possibi

17、lity 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 o

18、rganizations 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

19、, 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. DIN EN ISO 11545:2010-04 EN ISO 11545:2009 (E) 3 machinery for agriculture and forestry” in collab

20、oration with Technical Committee CEN/TC 334 “Irrigation This document (EN ISO 11545:2009) has been prepared by Technical Committee ISO/TC 23 “Tractors and 1 Scope This International Standard specifies an in-field method for determining the uniformity of water distribution in the field from centre-pi

21、vot 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

22、 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 def

23、initions 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 l

24、ocated 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 i

25、n 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 s

26、prinkler, 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 mov

27、ing 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 DIN EN ISO 11545:2010-04 EN ISO 11545:2009 (E) 4 2.6 endgun set of one or more spraye

28、rs 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

29、 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 s

30、prinkler 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 an

31、d not for crop production, in which case that distance is excluded 2.10 wetted radius rwdistance measured from the centreline of a sprayer or sprinkler to the last collector with measurable water or estimated from the manufacturers catalogue data as half of the diameter of coverage 2.11 applied dept

32、h diadjusted 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 t

33、est 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

34、 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

35、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. DIN EN ISO 11545:2010-04 EN ISO 11545:2009 (E) 5 3.1.2 Place the collectors uniformly along two or more straight lines perpendicular to th

36、e 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

37、 wetted radiusm Maximum collector spacing 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

38、 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 irriga

39、tion 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

40、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 interfe

41、re 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

42、 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 o

43、f 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 t

44、he 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 e

45、ight 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 capabl

46、e 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 w

47、ind velocities greater than 5 m/s, the client and tester should understand DIN EN ISO 11545:2010-04 EN ISO 11545:2009 (E) 6 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

48、 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

49、 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