BS ISO 6690-2007 en_2554 Milking machine installations - Mechanical tests《挤奶装置.机械试验》.pdf
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1、BRITISH STANDARD BS ISO 6690:2007 Milking machine installations Mechanical tests ICS 65.040.10 BS ISO 6690:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 March 2007 BSI 2007 ISBN 978 0 580 50337 5 National foreword This British Stand
2、ard was published by BSI. It is the UK implementation of ISO 6690:2007. It supersedes BS ISO 6690:1996 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee AGE/32, Agricultural implements and trailers. A list of organizations represented on AGE/32 can be o
3、btained 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. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd.
4、No. Date Comments Reference number ISO 6690:2007(E)INTERNATIONAL STANDARD ISO 6690 Third edition 2007-02-15 Milking machine installations Mechanical tests Installations de traite mcanique Essais mcaniques BS ISO 6690:2007 ii iii Contents Page Foreword. v 1 Scope . 1 2 Normative references . 1 3 Defi
5、nitions . 1 4 Test equipment . 1 4.1 General. 1 4.2 Measurement of vacuum 2 4.3 Measurement of a vacuum changing over time 2 4.4 Measurement of atmospheric pressure 2 4.5 Measurement of back pressure. 2 4.6 Measurement of airflow 3 4.7 Measurement of pulsation characteristics. 3 4.8 Measurement of p
6、ump rotational frequency 3 4.9 Teatcup plugs 3 5 Vacuum system. 4 5.1 General requirements and preparation 4 5.2 Vacuum regulation 5 5.3 Vacuum pumps . 8 5.4 Vacuum regulator leakage . 10 5.5 Vacuum gauge error. 11 5.6 Vacuum drop in air line 11 5.7 Effective volume of interceptor . 11 5.8 Effective
7、 volume of the sanitary trap 12 5.9 Leakage in vacuum system . 12 5.10 Vacuum drop across vacuum taps for bucket milking units . 12 6 Pulsation system 13 6.1 Airflow at stall taps. 13 6.2 Pulsation rate, pulsator ratio, pulsation chamber vacuum phases and vacuum drop in pulsator air line . 13 7 Milk
8、 system 14 7.1 Slope of milkline . 14 7.2 Milk system leakage . 14 7.3 Effective volume of receiver 14 7.4 Leakage in releaser. 15 8 Milking unit 15 8.1 Mouthpiece depth and effective length of liner . 15 8.2 Teatcup or cluster fall-off air inlet. 17 8.3 Leakage through shut-off valves of milking un
9、its. 17 8.4 Air vent and leakage into teatcup or cluster17 8.5 Effective volume of buckets, transport cans and recorder jars 17 8.6 Measuring the vacuum in the cluster . 18 8.7 Measurement of the vacuum drop from accessories attached in the long milk tube . 18 8.8 Airflow at the end of the long milk
10、 tube . 18 Annex A (normative) Laboratory tests of vacuum in the milking unit 20 Annex B (informative) Alternative method for the measurement of air inlet and leakages in clusters 25 Annex C (informative) Examples of test procedure to reduce the test work . 27 BS ISO 6690:2007iv Annex D (informative
11、) Test report for testing milking machine installations in accordance with ISO 6690. 32 BS ISO 6690:2007v 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 nor
12、mally 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
13、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 prepar
14、e 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 som
15、e 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 6690 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry. This third edition cancels and replace
16、s the second edition (ISO 6690:1996) which has been technically revised. BS ISO 6690:2007blank1 Milking machine installations Mechanical tests WARNING Some of the tests specified in this International Standard involve procedures which could lead to a hazardous situation. The attention of any person
17、performing tests in accordance with this International Standard is drawn to the need to be appropriately trained in the type of work to be carried out. It is left to the responsibility of the user to check all national regulatory conditions and health and safety requirements applicable for the relev
18、ant country. 1 Scope This International Standard specifies mechanical tests for milking machine installations in order to verify compliance of an installation or component with the requirements of ISO 5707. It also stipulates the accuracy requirements for the measuring instruments. This Internationa
19、l Standard is applicable for testing new installations and for periodic checking of installations for efficiency of operation. Alternative test methods may be applicable if they can be shown to achieve comparable results. Test procedures described in Annex A are primarily for testing in the laborato
20、ry. An example of a field test procedure which can reduce the time and effort involved in testing is given in Annex C and a corresponding test report in Annex D. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, on
21、ly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3918:2007, Milking machine installations Vocabulary ISO 5707:2007, Milking machine installations Construction and performance 3 Definitions For the purposes of
22、this document, the terms and definitions given in ISO 3918 apply. 4 Test equipment 4.1 General Measurements to be made for the specific milking machine shall be determined before making the tests. The measuring equipment shall have a precision (maximum error) that, together with the skill of the tes
23、ter, ensures that the requirements given in ISO 5707 can be recorded with sufficient accuracy. The instruments shall be calibrated regularly to ensure the given specifications. BS ISO 6690:20072 The measuring points A1, A2, Vm, Vr, Vp and Pe referred to in this International Standard are described i
24、n 4.2.2 and 4.2.3 of ISO 5707:2007. 4.2 Measurement of vacuum The instrument used for measuring vacuum shall be able to measure with an error of less than 0,6 kPa and a repeatability within 0,2 kPa. NOTE A vacuum gauge of accuracy class 1,0 will usually meet this requirement if calibrated at a vacuu
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