1、BSI Standards Publication BS ISO 7216:2015 Agricultural and forestry tractors Measurement of noise emitted when in motionBS ISO 7216:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 7216:2015. The UK participation in its preparation was entrusted to Techn
2、ical Committee AGE/6, Agricultural tractors and forestry machinery. A list of organizations represented on this committee can be obtained 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 applic
3、ation. The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 87267 9 ICS 17.140.20; 65.060.01 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and
4、 Strategy Committee on 31 October 2015. Amendments issued since publication Date T e x t a f f e c t e dBS ISO 7216:2015 ISO 2015 Agricultural and forestry tractors Measurement of noise emitted when in motion Tracteurs agricoles et forestiers Mesurage du bruit mis en mouvement INTERNATIONAL STANDARD
5、 ISO 7216 Second edition 2015-10-01 Reference number ISO 7216:2015(E)BS ISO 7216:2015ISO 7216:2015(E)ii ISO 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utili
6、zed otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyrigh
7、t office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.orgBS ISO 7216:2015ISO 7216:2015(E)Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Measurement units and toleran
8、ces . 2 5 Instrumentation 2 6 Circumstances for testing 2 6.1 Acoustical environment 2 6.2 Ambient conditions . 3 7 Layout of the test area . 3 8 Condition of tractor . 4 9 Test procedure 4 10 Interpretation of results . 4 11 Test report . 4 Annex A (informative) Designation of Maintenance Agency .
9、5 Bibliography 6 ISO 2015 All rights reserved iii Contents PageBS ISO 7216:2015ISO 7216:2015(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 carr
10、ied 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.
11、ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the differe
12、nt approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may
13、be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents
14、). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principle
15、s in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 2, Common tests. This second edition cancels and replaces the first ed
16、ition (ISO 7216:1992), of which has been technically revised for the technical harmonization with OECD Code 2, 4.8: July 2014.iv ISO 2015 All rights reservedBS ISO 7216:2015ISO 7216:2015(E) Introduction Technical harmonization with OECD is ensured by the Maintenance Agency operating as specified in
17、Annex A. ISO 2015 All rights reserved vBS ISO 7216:2015BS ISO 7216:2015Agricultural and forestry tractors Measurement of noise emitted when in motion 1 Scope This International Standard specifies a method for measuring the A-weighted sound pressure level of the noise emitted by agricultural and fore
18、stry tractors while the vehicle is in motion. The conditions specified for the operation of the agricultural and forestry tractors during the measurements are defined to provide a realistic and repeatable assessment of the maximum noise emitted when it is in motion. This International Standard is ap
19、plicable to agricultural and forestry tractors, fitted with elastic tyres or rubber tracks. It is not applicable to special forestry machinery, for example, forwarders, skidders, etc., as defined in ISO 6814 and agricultural and forestry tractors, fitted with steel tracks. NOTE The test method calls
20、 for an acoustical environment which can only be obtained in an extensive open space. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For
21、undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61672-1, Electroacoustics Sound level meters IEC 60942, Electroacoustics Sound calibrators ISO 6814:2009, Machinery for forestry Mobile and self-propelled machinery Terms, definitions and classi
22、fication 3 T erms a nd definiti ons For the purposes of this document, the following terms and definitions apply. 3.1 agricultural tractor self-propelled agricultural vehicle having at least two axles and wheels, or endless tracks, particularly designed to pull agricultural trailers and pull, push,
23、carry and operate implements used for agricultural work (including forestry work), which may be provided with a detachable loading platform Note 1 to entry: The agricultural vehicle has a maximum design speed of not less than 6 km/h and may be equipped with one or more seats. SOURCE: ISO 12934:2013,
24、 3.1 INTERNATIONAL ST ANDARD ISO 7216:2015(E) ISO 2015 All rights reserved 1BS ISO 7216:2015ISO 7216:2015(E) 3.2 unballasted tractor mass mass in the tractor in working order with tanks and radiators full, roll-over protective structure with cladding, and any track equipment or additional front-whee
25、l drive components required for normal use Note 1 to entry: Not included are the operator, optional ballast weights, additional wheel equipment, special equipment and loads. SOURCE: ISO 5700:2013, 3.2 4 Measurement units and tolerances The following units and tolerances apply to the maximum value me
26、asured: rotational frequency (r/min) 0,5 % ; time (s) 0,2 s ; distance (m or mm) 0,5 % ; force (N) 1,0 % ; mass (kg) 0,5 % ; atmospheric pressure (kPa) 0,2 kPa ; tyre pressure (Pa) 5 % . 5 Instrumentation 5.1 A precision quality sound level meter shall be used meeting or exceeding the requirements o
27、f IEC 61672-1 for a class 1 instrument. If alternative measuring equipment is used, the tolerances shall not exceed those given in the relevant clauses of IEC 61672-1 for a class 1 instrument. Measurement shall be carried out with a frequency weighting network in conformity with curve A and set to g
28、ive fast response as is described in the IEC publication. 5.2 The calibration of the equipment at the time of measurement shall be in accordance in all respects with the specifications of IEC 61672-1 for a class 1 instrument. Checking of the calibration shall be carried out at appropriate intervals
29、and at least before and after each measurement session, using an acoustical calibrator in accordance with the specifications of IEC 60942 for a class 1 instrument. The calibrator shall be checked annually to verify its output and its calibration shall be traceable to a national standards laboratory.
30、 6 Circumstances for testing 6.1 Acoustical environment 6.1.1 Measurements shall be made in a sufficiently silent, flat, and open zone. This area shall be an open space of 50 m radius, of which the central part of at least 20 m radius shall be practically level and made concrete, asphalt, or similar
31、 material and shall not be covered with powdery snow, high grass, friable soil or cinders. 6.1.2 The surface of the test track shall be of such a kind that pneumatic tyres or rubber tracks do not cause excessive noise. The surface shall be as clean and dry as possible (e.g. free of gravel, leaves, s
32、now, etc.).2 ISO 2015 All rights reservedBS ISO 7216:2015ISO 7216:2015(E) 6.2 Ambient conditions 6.2.1 Measurements shall be made in fine weather with little or no wind. The level of background noise and the level of wind noise at the microphone location shall be at least 10 dB(A) below the noise le
33、vel measured during the test. Any extraneous noise occurring during the reading, which is not connected to general sound level measurement, shall not be taken into consideration. 6.2.2 No correction shall be made to the test results for the atmospheric conditions or other factors. Atmospheric pressu
34、re shall not be less than 96,6 kPa. If this is not possible because of conditions of altitude, a modified injection pump setting may have to be used, details of which will be included in the report. 7 Layout of the test area 7.1 The centreline of the track (CC), a line (PP) perpendicular to it and p
35、assing through the centre of the test area and two lines (AA and BB) parallel to line PP and 10 m from it shall be marked on the track (see Figure 1). 7.2 The microphone shall be placed 1,2 m above ground and a distance of 7,5 m from the axis of forward movement of the tractor, measured along the pe
36、rpendicular PP to the axis (see Figure 1). The microphone shall be oriented in a direction normal to the centreline of the path of travel on the track. Dimensions in metres a One microphone position may be eliminated, in which case an additional test run from BB to AA is required. Figure 1 Layout of
37、 the test area Microphone position ISO 2015 All rights reserved 3BS ISO 7216:2015ISO 7216:2015(E) 8 Condition of tractor 8.1 Measurement will be made on the unballasted tractor with no load and without trailer or semi- trailer. 8.2 Immediately before the test, the engine shall be brought to its norm
38、al operating temperature. 8.3 The stabilized ground speed to be used will be equal to three-quarters of the attainable maximum in the transmission gear or setting giving the highest speed used for roadwork. 9 Test procedure 9.1 At least two measurements shall be carried out on each side of the tract
39、or. Preliminary measurements to establish governor control setting may be made but shall not be taken into consideration. 9.2 Tractors shall be driven at stabilized ground speed, under the conditions specified in Clause 8, as far as line AA. At this moment, the governor control lever shall quickly b
40、e fully opened. The lever shall be held in this position until the tractor has passed line BB and then brought to the minimum position as quickly as possible. 10 Interpretation of results 10.1 Measurements shall be considered valid if the difference between two consecutive measurements on the same s
41、ide of the tractor does not exceed 2 dB(A). 10.2 The highest sound level measured shall constitute the test result. 11 Test report The test report shall include the following details: a) reference to this International Standard b) name and address of the manufacturer c) the tractor type, model seria
42、l number and transmission type d) the type and rated speed of the engine e) a brief description of the silencing system (if provide) f) whether the tractor is two- or four-wheel drive g) details of the test site, the testing ground conditions and meteorological conditions h) sound level meter, make,
43、 model, type i) the number of measurements and the sound pressure levels recorded j) overall test results k) date and place of test and signature of the tester.4 ISO 2015 All rights reservedBS ISO 7216:2015ISO 7216:2015(E) Annex A (informative) Designation of Maintenance Agency A.1 A Maintenance Age
44、ncy has been established by the ISO Technical Management Board (TMB) to ensure that technical harmonization can be maintained between ISO/TC 23/SC 2 Standards and OECD Tractor Test Codes. It operates through guidelines approved by the TMB, accessible at http:/standards. iso.org/iso/7216 that entrust
45、 it to the following functions: a) to receive the requests for changes from recognized ISO/TC 23/SC 2 P-members; b) to evaluate and resolve the requests for changes; c) to publish the approved changes. A.2 Changes to this International Standard will be announced by the MA Secretariat to ISO/TC 23/SC
46、 2 and will be made publicly available at http:/standards.iso.org/iso/7216. They constitute authoritative amendments to Clauses 1 to 11 of this International Standard. ISO 2015 All rights reserved 5BS ISO 7216:2015ISO 7216:2015(E) Bibliography 1 ISO 12934:2013, Tractors and machinery for agriculture
47、 and forestry Basic types Vocabulary 2 ISO 5700:2013, Tractors for agriculture and forestry Roll-over protective structures Static test method and acceptance conditions 3 OECD Code 2: July 2014, OECD Standard Code for the official testing of agricultural and forestry tractor performance6 ISO 2015 Al
48、l rights reservedBS ISO 7216:2015BS ISO 7216:2015ISO 7216:2015(E) ISO 2015 All rights reserved IC S 17.140.20; 65.060.01 Price based on 6 pagesThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information a
49、nd services. BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited. British Standards Institution (BSI) BSI Group Headquarters 389 Chiswick High Road London W4 4AL UK About us We bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions. The knowledge embodied in our standards has been carefully asse
