1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 10988:2011Equipment for crop protection Knapsack motorized air-assisted sprayers T e s t m e t h o d s a n d performance limitsBS ISO 10988:2011 BRITISH STANDARDNational f
2、orewordThis British Standard is the UK implementation of ISO 10988:2011. The UK participation in its preparation was entrusted to T e c h n i c a l Committee AGE/15, Equipment for crop protection and application of liquid fertilizer.A list of organizations represented on this committee can be obtain
3、ed on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 66278 2 ICS 65.060.40 Compliance with a British Standard cannot confer immunity from legal obligations.Th
4、is British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2011.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 10988:2011Reference numberISO 10988:2011(E)ISO 2011INTERNATIONAL STANDARD ISO10988First edition2011-07-15Equipmen
5、t for crop protection Knapsack motorized air-assisted sprayers Test methods and performance limits Matriel de protection des cultures Pulvrisateurs dos motoriss jet port Mthodes dessai et limites de performance BS ISO 10988:2011ISO 10988:2011(E) COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reser
6、ved. 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 ISOs member body in the country of the request
7、er. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedBS ISO 10988:2011ISO 10988:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv 1 Scope
8、1 2 Normative references1 3 Terms and definitions .1 4 Requirements.2 4.1 General .2 4.2 Material of construction2 4.3 Straps and their fixation points .2 4.4 Spray tank 2 4.5 Strainers and filters.3 4.6 Nozzles .3 4.7 Air hoses and chemicals hoses.3 5 Tests .3 5.1 Test liquids and equipment3 5.2 Te
9、st conditions 4 5.3 Liquid flow rate 5 5.4 Volume of total residual liquid .5 5.5 Stability.5 5.6 Contents gauge scale and total tank volume .5 5.7 Filling 6 5.8 Air velocity and air volume.6 5.9 Droplet size 7 5.10 Potential ground deposit 8 5.11 Potential vertical deposit8 5.12 Test for compatibil
10、ity of sprayer components .8 6 Specifications and performance limits .9 6.1 Volume of residual liquid9 6.2 Stability.9 6.3 Contents gauge scale and total tank volume .9 6.4 Filling 9 6.5 Liquid flow rate 9 6.6 Emptying 9 6.7 Compatibility of sprayer components.10 7 Instruction handbook10 8 Test repo
11、rt10 Annex A (informative) Sprayer locking device.11 Annex B (informative) Device for detecting potential vertical deposits12 Annex C (normative) Stability test 13 Annex D (normative) Sampling grid position for air velocity determination14 Annex E (informative) Position of sprayer and Petri dishes f
12、or potential ground deposit determination.15 Annex F (informative) Example test report.16 Bibliography19 BS ISO 10988:2011ISO 10988:2011(E) iv ISO 2011 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO mem
13、ber 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, governmen
14、tal 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 Direc
15、tives, 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 bodi
16、es 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 10988 was prepared by Technical Committee ISO/TC 23, Tractors and machinery fo
17、r agriculture and forestry, Subcommittee SC 6, Equipment for crop protection. BS ISO 10988:2011INTERNATIONAL STANDARD ISO 10988:2011(E) ISO 2011 All rights reserved 1Equipment for crop protection Knapsack motorized air-assisted sprayers Test methods and performance limits 1 Scope This International
18、Standard specifies the requirements, test methods and minimum performance limits for knapsack motorized air-blast (twin-fluid) sprayers and air-assisted centrifugal sprayers as defined in ISO 5681. It is applicable to those integrally powered knapsack sprayers, equipped with an engine and carried by
19、 the operator, intended primarily for use in agriculture and horticulture (hereafter referred to as “sprayers”). It is not applicable to hydraulic pressure sprayers, thermal sprayers or cold foggers; nor is it applicable to sprayers adapted for the application of dry material. It addresses general o
20、perating parameters as well as the potential deposition of spray droplets under specified controlled conditions. It does not deal with the safety of the operator in the use of the sprayers (see ISO 28139). 2 Normative references The following referenced documents are indispensable for the applicatio
21、n 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 5681, Equipment for crop protection Vocabulary ISO 9357:1990, Equipment for crop protection Agricultural sprayers Ta
22、nk nominal volume and filling hole diameter ISO 19932-1:2006, Equipment for crop protection Knapsack sprayers Part 1: Requirements and test methods ISO 28139:2009, Agricultural and forestry machinery Knapsack combustion engine-driven mistblowers Safety requirements 3 Terms and definitions For the pu
23、rposes of this document, the terms and definitions given in ISO 5681, ISO 19932-1 and ISO 28139 apply. BS ISO 10988:2011ISO 10988:2011(E) 2 ISO 2011 All rights reserved4 Requirements 4.1 General Knapsack motorized sprayers shall be so designed that they can be safely used in accordance with their in
24、tended purpose, achieve minimal exposure levels to the operator and avoid unnecessary waste of pesticides into the environment. The sprayer shall be designed such that the liquid flow can be activated and switched off in accordance with ISO 28139:2009, 5.6.6. It shall comply with the following requi
25、rements and shall meet the specifications in accordance with ISO 19932-1 as applicable. The sprayer with the tank filled at nominal volume shall be designed such that the operator shall be able to pick it up, carry it and put it down in accordance with the instruction handbook and without any spilla
26、ge. It shall have an adjustable and reproducible spray liquid output. Any components of the sprayer subject to maintenance, as specified in the instruction handbook, shall be changeable without special tools, unless these are provided with it. The sprayer shall be designed such that the filled spray
27、er can be carried in the upright position. It shall not be possible to displace any gasket or seal from its seated position by tightening. 4.2 Material of construction All components of the sprayer made from plastic and elastomers coming into direct contact with the spray solution shall be capable o
28、f operating satisfactorily after the immersion test specified in 5.12. 4.3 Straps and their fixation points Straps shall be made of non-absorbent material. The straps shall be adjustable in length to meet the needs of the operator while on the operators back. Each strap shall be adjustable to a leng
29、th of at least 75 cm, as measured between the fixing points of each strap. The load-bearing width of the straps shall be at least 50 mm. 4.4 Spray tank In order to avoid chemical spillage during filling, the diameter of the filling opening shall be in accordance with ISO 9357:1990, Table 1. Hose nip
30、ples fitted to the tank shall be able to withstand a test force of (13 1) N, so as to avoid unintentional disconnection. The spray tank shall have a volumetric content gauge scale as specified in ISO 9357. The filling tank opening shall be fitted with a lid, which shall have a retainer, be able to b
31、e opened and closed without the use of a special tool, and be fitted with a holding device ensuring a closed position by means of a positive mechanical action (e.g. lids fixed by screw action). BS ISO 10988:2011ISO 10988:2011(E) ISO 2011 All rights reserved 3It shall be possible to empty the tank of
32、 the sprayer without the need to invert the sprayer. It shall be possible to empty the tank without contaminating the operator or parts of the sprayer. The exit flow shall not be directed towards the operator. The emptying device shall be guarded against unintentional opening. The emptying device sh
33、all be able to be operated without the use of tools. 4.5 Strainers and filters The sprayer tank shall have a strainer with a mesh width not greater than 2 mm. Gaps between the spray tank filling opening and strainer, as well as openings within the strainer, shall not exceed 2 mm. The liquid going fr
34、om the tank to the nozzles shall be filtered. The mesh width of these filters shall be less than the narrowest diameter of the smallest size of nozzle to be used. Filters shall be installed at a freely accessible place and shall have a surface area of at least 1 000 mm2to prevent frequent filter clo
35、gging. They shall be capable of being removed and easily cleaned without draining of the tank. 4.6 Nozzles The pattern of sprayed liquid shall not change unintentionally during operation. The nozzle shall be protected from external clogging during the storage and filling of the sprayer. 4.7 Air hose
36、s and chemicals hoses The ratio of the hose bends shall meet the limits established by the manufacturers of the hoses in the normal working position. The hoses shall have no bends which hinder the flow of liquid or air. The distance between the shut-off valve and the air-outlet section shall be no l
37、ess than 400 mm. The air hoses shall be flexible in order to be easily adjustable. The fan inlet shall be designed such that the ingestion of foreign materials is avoided when the sprayer is on the ground. 5 Tests 5.1 Test liquids and equipment 5.1.1 Test liquids 5.1.1.1 Clean water, free from solid
38、s. 5.1.1.2 Petrol, as indicated by the manufacturer. 5.1.2 Measuring cylinders for measuring volumes up to 1 l with a maximum error of 10 ml. BS ISO 10988:2011ISO 10988:2011(E) 4 ISO 2011 All rights reserved5.1.3 Weighing device, able to weigh up to 2 kg with a maximum error of 0,1 g. 5.1.4 Timer (s
39、topwatch), for measuring periods up to 5 min with a maximum error of 0,5 s. 5.1.5 Temperature measurement device, able to measure temperatures up to 35 C with a maximum error of 0,5 C. 5.1.6 Artificial targets 5.1.6.1 Petri dishes with an internal diameter 150 mm. Other artificial collectors which c
40、an ensure the same results may be used, in which case they shall be described in the test report. 5.1.6.2 Sponges (e.g. 200 mm 200 mm 10 mm). 5.1.7 Filling device (for an example, see ISO 19932-1:2006, Annex C). 5.1.8 Air velocity measuring device with a maximum error of 5 % of the measurement value
41、. 5.1.9 Sprayer locking device with a minimum mass of 150 kg and able to guarantee the locking of the sprayer and its air tube in the test position (for an example, see Annex A). 5.1.10 Droplet size analyser, capable of characterizing droplet size spectra (e.g. laser light diffraction particle analy
42、ser). 5.1.11 Device for detecting potential vertical deposits, consisting of a frame (2 2) m with 16 sponges spaced across a length of 200 mm (see Annex B). 5.2 Test conditions 5.2.1 General Assemble the sprayer following the instruction handbook. Inspect for tightness the filling cap and all other
43、operator-controlled couplings. Before starting each test, ensure that the engine has been properly warmed up. The tests shall be performed with one new specimen of the sprayer type at an air temperature of 10 C to 30 C and a relative air humidity of at least 50 %, without influence of wind or sunlig
44、ht. The test site shall be such as to ensure that the natural course of the jet produced by the machine being tested is not altered. The surface on which the tests are carried out shall be level and free of obstacles. 5.2.2 Sprayer position See the indications reported for each test. 5.2.3 Engine sp
45、eed If the engine speed cannot be regulated, all tests shall be carried out at the maximum allowable engine speed. If the engine has an adjustable throttle, additional tests shall be carried out at the engine speed recommended by the manufacturer in the instruction handbook. WARNING Running the engi
46、ne in a closed environment can create an inhalation hazard. BS ISO 10988:2011ISO 10988:2011(E) ISO 2011 All rights reserved 55.3 Liquid flow rate The sprayer shall be locked in the horizontal position using the sprayer locking device (5.1.9). Position the sprayer in the upright position with the tan
47、k filled to its nominal volume, the air delivery tube horizontal, then at 80 above the horizontal, and with the tube fully extended. Run it at a number of engine revolutions per minute in accordance with 5.2.3. Activate the sprayer in the operating position. Recover the liquid output for a pre-estab
48、lished time. Determine the amount of recovered liquid using a balance (5.1.3) or graduated cylinder (5.1.2). The flow rate of the sprayer for each type/number of nozzles both traditional and ULV (ultra-low volume), with and without flow-rate-boosting device, if any shall be measured with a maximum e
49、rror of 1 %. Record the flow rates in litres per minute (l/min). Repeat the test with the tank filled to half its nominal volume. Alternatively: a) fill the tank to its nominal volume; b) activate the sprayer for the time necessary to empty half tank; c) determine the amount of liquid sprayed by tank re-filling. The liquid flow from the sprayer output shall be guaranteed in all intended working conditions specified by the manufacturer. 5.4 Volume of total residual liquid This test sha
