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1、BRITISH STANDARD BS EN 12761-3:2001 Agricultural and forestry machinery Sprayers and liquid fertilizer distributors Environmental protection Part 3: Air-assisted sprayers for bush and tree crops The European Standard EN 12761-3:2001 has the status of a British Standard ICS 13.020; 65.060.25 NO COPYI
2、NG WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 08:44:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 12761-3:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was publis
3、hed under the authority of the Standards Committee and comes into effect on 15 May 2001 BSI 05-2001 ISBN 0 580 37282 0 National foreword This British Standard is the official English language version of EN 12761-3:2001. The UK participation in its preparation was entrusted to Technical Committee AGE
4、/15, Equipment for crop protection and application of liquid fertiliser, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications r
5、eferred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of
6、 a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation
7、, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 15 and a back cover. The BSI copyright da
8、te displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 08:44:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12761-3
9、 March 2001 ICS 65.060.25; 65.060.40 English version Agricultural and forestry machinery - Sprayers and liquid fertilizer distributors - Environmental protection - Part 3: Air- assisted sprayers for bush and tree crops Matriel agricole et forestier - Pulvrisateurs et distributeurs dengrais liquide -
10、 Protection de lenvironnement - Partie 3: Pulvrisateurs jet port pour arbustes et arboriculture Land- und Forstmaschinen - Pflanzenschutzgerte zum Ausbringen von Pflanzenschutzmitteln und flssigen Dngemitteln - Umweltschutz - Teil 3: Sprhgerte fr Raumkulturen This European Standard was approved by C
11、EN on 4 February 2001. 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 standar
12、ds 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 translation under the responsibility of a CEN member into its own language and notified to the
13、Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United King
14、dom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12761-3:2001 E Lic
15、ensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 08:44:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 12761-3:2001 Contents Foreword3 1Scope 4 2Normative references 4 3Terms and definitions4 4Requirements.4 4.1General4 4.2Adjustment of the volume application rate.8 4.3Distribution of liq
16、uid and air.9 4.4Rinsing water tank.10 5Marking .10 6Instruction handbook 10 7Additional requirements for cleaning device for crop protection product cans.10 Annex A (normative) Test method for cleaning crop protection product cans11 Annex B (informative) Example of device for cleaning of crop prote
17、ction product cans13 Bibliography15 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 08:44:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 12761-3:2001 Foreword This European Standard has been prepared by Technical Committee CEN/TC 144 “Tractors and machinery for agriculture and forest
18、ry“, the secretariat of which is held by AFNOR. 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 September 2001, and conflicting national standards shall be withdrawn at the latest by September 200
19、1. This standard consists of the following parts, under the general title Agricultural and forestry machinery Sprayers and liquid fertilizer distributors Environmental protection: ? Part 1 : General ? Part 2 : Field crop sprayers ? Part 3 : Air-assisted sprayers for bush and tree crops According to
20、the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain,
21、 Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 08:44:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 12761-3:2001 1 Scope This standard specifies requirements and methods for their verification for design and performances of air-assisted s
22、prayers for bush and tree crops with respect to minimizing the risk of environmental contamination. This part applies in connection with EN 12761-1:2001 which contains general guidelines for agricultural sprayers. 2 Normative references This European Standard incorporates, by dated or undated refere
23、nce, provision from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporate
24、d in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 907:1997, Agricultural and forestry machinery Sprayers and liquid fertilizer distributors Safety. EN 12761-1:2001, Agricultural and forestry machinery - Spray
25、ers and liquid fertilizer distributors - Environmental protection - Part 1 : General. ISO 4102, Equipment for crop protection Sprayers - Connection threading. ISO 4287, Geometrical Product specification (GPS) Surface texture: Profile method Terms, definition and surface texture parameters. ISO 4288,
26、 Geometrical Product Specifications (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface texture. ISO 5682-1, Equipment for crop protection Spraying equipment Part 1 : Test methods for sprayer nozzles. ISO 5682-2, Equipment for crop protection Spraying equipment P
27、art 2 : Test methods for hydraulic sprayers. ISO 5682-3:1996, Equipment for crop protection Spraying equipment Part 3 : Test method for volume/hectare adjustment systems of agricultural hydraulic pressure sprayers. ISO 9357, Equipment for crop protection Agricultural sprayers Tank nominal volume and
28、 filling hole diameter. ISO 13440: 1996, Equipment for crop protection Agricultural sprayers Determination of the volume of total residues ISO 14710, Equipment for crop protection Air-assisted sprayers Dimensions of nozzle swivel nuts. 3 Terms and definitions For the purposes of this standard, the t
29、erms and definitions given in EN 12761-1:2001 apply. 4 Requirements 4.1 General 4.1.1 Spray tank 4.1.1.1 Surfaces Depth of roughness of inner and outer walls of the tank shall be such that Rz ? 100 ?m as specified in ISO 4287, and measured according to ISO 4288. Licensed Copy: sheffieldun sheffieldu
30、n, na, Sat Oct 28 08:44:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 12761-3:2001 4.1.1.2 Filling Filling devices shall be designed to avoid any return of liquid from the tank to the filling supply. The filling hole diameter shall comply with ISO 9357. The opening lid shall be tightly sea
31、led to avoid spillage. The total tank volume shall be at least 5 % more than its nominal volume. Tanks with nominal volume greater than 200 l shall have a nominal volume which is a multiple of 100 l. Strainers shall have a minimum depth d as given in Table 1 and measured according to Figure 1. Strai
32、ners shall be installed in filling openings and shall have a mesh size less than 2 mm. Also any gap(s) between the tank filling hole and the strainer shall not exceed 2 mm (see Figure 1). The filling capacity of the tank with strainer when filled with water shall be at least 100 l/min for tanks with
33、 a nominal volume of 100 l or more. For tanks with a nominal volume less than 100 l, it shall be possible to fill the tank within 1 min. Strainers of the chemical introduction bowl, if available, shall have a filter with a maximum mesh size of 20 mm. Table 1 Minimum depth of strainers Nominal tank c
34、apacity (C)Minimum depth 1)(d) lmm C ? 15060 150 600250 1) measured from the upper edge of the strainer down to its bottom Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 08:44:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 6 EN 12761-3:2001 Dimensions in millimeters Figure 1 - Determinat
35、ion of the depth of the strainer and width of gaps 4.1.1.3 Emptying The volume of total residual as defined in 2.1 of ISO 13440:1996 shall not exceed : ? 4 % of the nominal tank volume for a tank volume less than 400 l ; ? 3 % of the nominal tank volume for a tank volume between 400 l (included) and
36、 1000 l (included) ; ? 2 % of the nominal tank volume for a tank volume more than 1000 l. The volume of total residual shall be determined in accordance with ISO 13440. An emptying device in accordance with 4.5.3 of EN 907:1997 shall allow the complete emptying of the residual in the tank when the s
37、prayer is in a horizontal position. Complete emptying of the residual is achieved if there are no visible puddles at the bottom of the tank after 5 min drainage. It shall be possible to collect the liquid at the outlet without contaminating the operator or equipment parts, e. g. stays. The tank outl
38、et shall be guarded against accidental opening. 4.1.1.4 Tank contents indicator The indication of contents shall correspond to ISO 9357. It shall be durable and easily visible from the drivers position and from where the tank is filled. The acceptable tolerances of the indication are: a) ? 7,5 % for
39、 each graduation mark for volumes up to 20 % of the nominal tank volume ; Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 08:44:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 7 EN 12761-3:2001 b) ? 5 % for each graduation mark for volumes above 20 % of the nominal tank volume. The toleran
40、ces shall be measured with a maximum error on measurement of ? 1 % with the sprayer in a horizontal position. Other means of visually checking the contents of the tank are allowed if they achieve equivalent accuracy. 4.1.1.5 Mixing Tanks shall be equipped with devices (e.g. agitators) to ensure an e
41、ven concentration of mixture. The maximum allowable deviation is 15 % when tested in accordance with ISO 5682-2. 4.1.2 Hoses and lines The bending radius of hoses shall be within limits recommended by the hose manufacturer. Hoses shall not have any deformation which can disturb the liquid flow. Pres
42、sure lines shall be equipped with quick-acting shut-off valves (e.g. tip-over lever valves). 4.1.3 Filter Sprayers equipped with a positive displacement pump shall have a suction filter. On the pressure side, the liquid going to the nozzles shall be filtered by means of central filters or filters in
43、 the lines of spraying sections. The mesh size of filters shall correspond to the size of nozzles fitted on the sprayer. This applies also to nozzle and pump filters. Blockages shall be indicated to the driver, for example by an appropriate positioning of the central pressure filters and pressure ga
44、uge. Filters shall be easily accessible and filter insets shall be removeable. For quick cleaning the filter tissue of the inset shall be easily accessible. It shall be possible, with the tank filled to its nominal volume, to clean central filters without any spray liquid leaking out except for that
45、 which may be present in the filter casing and suction or pressure lines. 4.1.4 Nozzles It shall be possible to fix nozzles in predetermined positions, to ensure that the spray is correctly directed, by appropriate means such as marking, by using locking systems or patterns. When the spraying stop c
46、ontrol has been activated, the dripping shall not exceed 2 ml per nozzle during 5 min. The measuring is started 8 s after the flow has been shut off. The flowrate of each individual nozzle, measured according to ISO 5682-1, shall not deviate by more than 5 % from the data of the flowrate tables. The
47、 swivel nuts of nozzles shall correspond to ISO 14710. 4.1.5 Measuring systems The working pressure, the volume application rate (in l/ha) where relevant, the adjustment controls and the tank volume indication shall be clearly readable from the drivers position. Turning of the head and the upper bod
48、y is tolerable. Each measuring system of the sprayer, e.g. for flowrate, forward speed, pressure, shall measure within a maximum error of 5 % of the true value. On sprayers which shall be fitted with a pressure gauge complying with 4.6 of EN 907:1997, the accuracy of the pressure gauge shall be : Li
49、censed Copy: sheffieldun sheffieldun, na, Sat Oct 28 08:44:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 8 EN 12761-3:2001 ? 0,2 bar for working pressures between 1 bar (included) and 8 bar (included) ; ? 0,5 bar for working pressures between 8 bar and 20 bar (included) ; ? 1 bar for working pressures more than 20 bar. The pressure gauge shall be clearly readable. The pressure indication shall be stable. The scale of the pressure gauge shall be marked ? every 0,2 bar for working pressures less than 5
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