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1、INTERNATIONAL STANDARD 2269 Second edition 1992-04-15 Shipbuilding - Class A magnetic compasses, azimuth reading devices and binnacles - Tests and certification Construction navale - Compas magnetiques, alidades et habitacles de classe A - Essais et certification - - _- - -_- -_ - _._. -._. - Refere
2、nce number ISO 2269: 1992(E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:05:23 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2269:1992(E) C
3、ontents Page Section 1 General ,.,.,.,.,.,. 1 1.1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Normative references . . . . . . . . . . . . . . .
4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.4 Test co
5、nditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.5 Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6、 . . . . . . . . . . . . . . . . 1 Section 2 Testing and certification of class A compasses . . . I 2 2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.2 Compass an
7、d gimballing Checks and tests . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Section 3 Testing and certification of azimuth reading devices, class A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8、. . . . . . . . 9 3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.2 Azimuth reading device Checks and tests . . . . . . . . . . . . . . . . . . . . . . . . . . .
9、. . 9 Section 4 Type-testing and certification of class A binnacles . . . . . 12 4.1 General 12 4.2 Binnacles 12 Annexes A Type-test and individual test certificate for compasses . . . . . . . 17 B Type-test certificate for bearing instruments 19 C Type-test certificate for binnacles 21 0 ISO 1992 A
10、ll rights reserved. No part of this publication may be reproduced or utilized in any fort-n or by any means, electronie or mechanical, including photocopying and microfilm, without Permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Gene
11、ve 20 0 Switzerland Printed in Switzerland ii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:05:23 MDTNo reproduction or networking permitted without license from IHS -,-,- I
12、SO 2269:1992(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 carried out through ISO technical committees. Esch member body interested in a subje
13、ct for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take patt in the work. ISO collaborates closely with the International Electrotechnical Commission (I
14、EC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75 % of the member bodies casting a vote. International S
15、tandard ISO 2269 was prepared by Technical Committee ISO/TC 8, Shipbuilding and marine sfrUcfures, Sub-Committee SC 18, Advanced navigational instruments and Systems. This second edition cancels and replaces the first edition (ISO 2269:1973), of which it constitutes a technical revision, limited to
16、class A magnetic compasses, azimuth reading devices and binnacles; tests and certification of class B magnetic compasses form the subject of ISO 10316. Annexes A, B and C form an integral part of this International Standard. . . . Ill Copyright International Organization for Standardization Provided
17、 by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:05:23 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by IHS unde
18、r license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:05:23 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 2269:1992(E) Shipbuilding - Class A magnetic compasses, azimuth reading devices and binnacles - T
19、ests and certification Section 1: General 1.1 Scope This International Standard specifies type-test and individual test methods, and gives the acceptable limits of the characteristics necessary to guarantee conformity of magnetic compasses, azimuth reading devices and binnacles to the general specif
20、ications given in ISO 449. 1.2 Normative references The following Standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the editions indicated were valid. All stan- dards are subject to revision, and Pa
21、rties to agreements based on this International Standard are encouraged to investigate the possibility of ap- plying the most recent editions of the Standards in- dicated below. Members of IEC and ISO maintain registers of currently valid International Standards, ISO 449: 1979, Shipbuilding - Magnet
22、it compasses and binnacles, class A. ISO 1069:1973, Magnetit compasses and binnacles for sea navigation - Vocabulary. 1.3 Definitions For the purposes of this International Standard, the definitions given in ISO 1069 apply. Unless otherwise stated, IJ is to be understood as the horizontal component
23、of the magnetic flux den- sity, in microtesla (PT), at the place of examination. 1.4 Test conditions Type-testing shall be carried out before the instru- ments covered come into regular Service. For type- testing, new devices only will be accepted. Individual testing shall be carried out before inst
24、al- lation on-board ship; it is also desirable periodically and after repair. For individual testing, all devices shall be in a clean and serviceable state when sub- mitted for testing. Unless otherwise stated, all tests shall be carried out at a temperature of 20 *C + 3 OC. - 1.5 Certification Devi
25、ces which have passed the type-tests or the in- dividual tests and comply with the requirements shall be so certified in the language of the test authority and in English. Esch type-test certificate is valid exclusively for the model tested. In case of alterations or technical im- provements which a
26、ffect its compliance with IS0449, the model shall be given a new identification num- ber or mark and the type-test repeated. All alter- ations shall be submitted to the original test authority who will decide whether a new type-test is necessary (see annexes A, B and C). Copies of the certificate sh
27、all be issued on demand. They shall explicitly be marked “copy”. Acceptance of type-test certificates and individual test certificates between countries will be a matter for mutual agreement. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NAS
28、A Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:05:23 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2269:1992(E) Section 2: Testing and certification of class A compasses 2.1 General 2.1.1 Types of Campasses to be tested Testing shall be carried out o
29、n all class A com- Passes, with or without a transmitting System. All compasses, other than those compasses without gimbals which are used as steering compasses only, shall be tested with their gimbal rings and outer gimbal bearings. 2.1.2 Manufacturers Statement The manufacturer shall produce a wri
30、tten Statement covering those requirements which cannot be ascertained during a type-test (see annex A). The Statement shall include the following Points: a) W C) d) e) 9 9) hl 2 the coercivity and magnetic moment of the di- rectional magnets; that the paint inside the compass is of good quality and
31、 that over a period of two years it is not likely to deteriorate to such an extent as to make the compass unusable, either as a result of the Change of temperature over the range of - 30 OC to + 60 OC or any other Cause (for ex- ample the legibility of graduations shall not be impaired by discoloura
32、tion or blistering); under the conditions described in b), that the compass liquid is not Iikely to show any ap- preciable discolouration such as to render the compass unusable; whether toughened or non-toughened glass is used for the top and bottom glass covers and its thickness; alternatively, whe
33、n a material other than glass is used, that its strength is equivalent to that of non-toughened glass of 4,5 mm thick- ness; that the material of the compass card will not distort; that the moment of inertia of the directional sys- tem is approximately the Same about all hori- zontal axes passing th
34、rough the bearing surface of the Pivot jewel; the vertical distance between the mid-plane of the magnets of the directional System and the inner gimbal axis of the compass supplied; the supporting forte on the Pivot at 20 OC; i) that the inner and outer bearings of the gimbal rings are of the Same t
35、ype; j) the length of bar magnets or diameter of ring magnet forming the directional System. In Order to check that the manufacturers Statement above has been fulfilled, Sample Checks may be carried out. 2.1.3 Marking 2.1.3.1 Verify that a) compasses are marked in a conspicuous place on the compass
36、card and the verge ring with the name of the manufacturer, or other means of identification; b) compass card and gimbal ring are marked with a serial number; c) the compass verge ring is marked with type and serial number. 2.1.3.2 The markings given in 2.1.3.1 shall be noted on the certificate. 2.1.
37、3.3 If other than alcohol, the type of liquid used shall be indicated on the bowl in the vicinity of the filling plug. 2.2 Compass and gimballing Checks and tests 2.2.1 Construction and material 2.2.1.1 Condition of compass bowl The compass shall be inspected to see that it is un- damaged and mechan
38、ically perfett. The liquid shall be colourless and free from turbidity and formation of flocks. There shall be no Ieaks. The paint, includ- ing that on the compass card, shall be free from Cracks and blisters. 2.2.1.2 Non-magnetic properties (type-test only) Compass bowls and gimballing shall be tes
39、ted to verify their non-magnetic properties (see 2.2.7.4). 2.2.1.3 Condition at high temperature The compass shall be warmed slowly from room temperature to 60 OC + 2 OC and kept at least 8 h at this temperature. After this period, the compass Copyright International Organization for Standardization
40、 Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:05:23 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2269:1992(E) shall not show any mechanical darnage, leakage or bubbles. The compass liquid and pain
41、t shall not show any deterioration, and the directional System shall not be deformed. The compass shall operate satisfactorily. The direction with its Pivot. al System shall always be in contact 2.2.1.4 Condition at low temperature The compass shall be slowly cooled to - 30 OC + 2 OC and kept at lea
42、st 8 h at this tem- perature.After this period the compass shall not show any mechanical darnage or deformation, leakage or bubbles. The liquid in the bowl shall not freeze, discolour or separate into its ingredients. A formation of flocks or ice shall not have occurred within the liquid and the dir
43、ectional System shall not be deformed. There shall be no deterioration in the function of the compass. The directional System shall always be in contact with its Pivot. 2.2.1.5 Thickness of top and bottom glass covers (type-test only) When made of non-toughened glass, the glass cov- ers of compasses
44、 (including compasses that have no gimbals outside the bowl) shall have a thickness of at least 4,5 mm. When toug hened be at I east 3 mm. glass is used, the thickness shall When material other than glass is used, its proper- ties shall be at least as strong as above See 2.1.2 d). The thickness of t
45、he glass may be measured by means of a micrometer. As this requires the opening of the compass, it shall be done when the other examinations have been carried out. 2.2.1.6 Transmitting System A transmitting System shall not interfere with read- ing the card or taking bearings with an azimuth reading
46、 device. 2.2.2 Compass gimballing 2.2.2.1 Plane of gimbal axes (type-test only) The gimbal axes erance of 1 mm. shall lie in one plane, within a tol- This test may be carried out from a fixed hori reference plane by mean s of a suita ble scale. zont al 2.2.2.2 Angle of gimbal axes and intersection o
47、f vertical planes passing through them (type-test only) The angle formed by the outer and inner gimbal axes shall be 90” + 1”. The vertical planes through the gimbal axes shall intersect to within 1 mm of the Pivot Point. Any end play shall not Cause these tol- erances to be exceeded. The outer dire
48、ction. gimbal axis shall be in the fore and aft Measurement of the axes angles may be made Dy means of the test stand graduation, when first one then the other gimbal axis is brought into the verti- cal plane of view passing through the graduation centre by turning the compass support. Determination of the intersection line may be car- ried out on a test stand by measuring the displace- ment of the compass support in a direction perpendicular to either of the gimbal axes. 2.2.2.3 Freedom of movement within gimbal ring When the gimbal ring is in the horizontal plane, the compass bowl shall fre