1、July 2009DEUTSCHE NORM English price group 8No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 65.150!$XV,“1535109www.din
2、.deDDIN EN ISO 16663-1Fishing nets Method of test for the determination of mesh size Part 1: Opening of mesh (ISO 16663-1:2009)English version of DIN EN ISO 16663-1:2009-07Fischnetze Prfverfahren zur Bestimmung der Maschenweite Teil 1: Maschenffnung (ISO 16663-1:2009)Englische Fassung DIN EN ISO 166
3、63-1:2009-07SupersedesDIN EN ISO 16663-1:2003-09www.beuth.deDocument comprises 13 pagesDIN EN ISO 16663-1:2009-07 2 National foreword This standard has been prepared by Technical Committee ISO/TC 38 “Textiles” in cooperation with Technical Committee CEN/TC 248 “Textiles and textile products” (Secret
4、ariat: BSI, United Kingdom). At present a DIN committee does not exist for this standard since the parties concerned have not shown any interest in work on the subject. The Normenausschuss Materialprfung (Materials Testing Standards Committee) is obliged to publish the standard, however, as the subj
5、ect falls in its domain. The DIN Standards corresponding to the International Standards and the IEC Publication referred to in clause 2 of the EN are as follows: IEC 60529 DIN EN 60529 ISO 139 DIN EN ISO 139 ISO 1107 DIN EN ISO 1107 Amendments This standard differs from DIN EN ISO 16663-1:2003-09 as
6、 follows: a) The scope has been extended to include passive fishing gear. b) Normative references have been supplemented. c) Further terms and definitions have been included. Previous editions DIN EN ISO 16663-1: 2003-09 National Annex NA (informative) Bibliography DIN EN 60529, Degrees of protectio
7、n provided by enclosures (IP code) DIN EN ISO 139, Textiles Standard atmospheres for conditioning and testing DIN EN ISO 1107, Fishing nets Netting Basic terms and definitions EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 16663-1March 2009ICS 65.150 Supersedes EN ISO 16663-1:2003 English Ver
8、sionFishing nets - Method of test for the determination of mesh size -Part 1: Opening of mesh (ISO 16663-1:2009)Filets de pche - Mthode dessai pour la dterminationdes dimensions de la maille - Partie 1: Ouverture de maille(ISO 16663-1:2009)Fischnetze - Prfverfahren zur Bestimmung der1:2009)This Euro
9、pean Standard was approved by CEN on 28 February 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references co
10、ncerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its ow
11、n language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania
12、, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All ri
13、ghts of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 16663-1:2009: EMaschenweite - Teil 1: Maschenffnung (ISO 16663-Contents Page 1 2 3 4 5 6 7 8 9 10 11 12 EN ISO 16663-1:2009 (E) DIN EN ISO 16663-1:2009-07 2Scope . 4 Normative references . 4T
14、erms and definitions. 4 Principle. 5 Apparatus 5 Measurement force. 7 Calibration . 7 Verification of length and force measurement 7 Requirements for testing . 8 Procedure 9 Foreword. 3 Calculation and expression of results 10 Test report . 11 Foreword This document (EN ISO 16663-1:2009) has been pr
15、epared by Technical Committee ISO/TC 38 “Textiles“ in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products“, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by
16、endorsement, at the latest by September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible
17、for identifying any or all such patent rights. This document supersedes EN ISO 16663-1:2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Rep
18、ublic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 16663-1:2009 ha
19、s been approved by CEN as a EN ISO 16663-1:2009 without any modification. EN ISO 16663-1:2009 (E) DIN EN ISO 16663-1:2009-07 31 Scope This part of ISO 16663 specifies a method for the determination of the size of the mesh opening of fishing nets, using an objective mesh gauge. It is applicable to ac
20、tive and passive fishing gear. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appl
21、ies. ISO 139, Textiles Standard atmospheres for conditioning and testing ISO 1107, Fishing nets Netting Basic terms and definitions IEC 60529, Degrees of protection provided by enclosures (IP Code) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply.
22、3.1 active fishing gear fishing gear requiring movement to catch the fish NOTE In general, mobile fishing equipment (i.e. equipment which is mobile relative to the sea bed or to the water) is led into the path of the fish to pursue and catch them. All trawls, dredges, seine nets, purse seines and ot
23、her surrounding nets are examples of active gear. 3.2 trawl towed net consisting of a cone-shaped body closed at the rear by a bag or cod end and widened at the opening by wings NOTE A trawl may be towed by one or two boats and, depending on the type, is used on the bottom or as a midwater (pelagic)
24、 trawl. 3.3 Danish seine funnel-shaped net (with wings and cod end) with very long ropes laid out on the sea bed and hauled in to a vessel in the open sea EN ISO 16663-1:2009 (E) DIN EN ISO 16663-1:2009-07 43.4 purse seine large single-panel multisection net used to encircle pelagic fish, the bottom
25、 of the net being drawn together to enclose the encircled fish 3.5 passive fishing gear fishing gear requiring movement of the fish in order for the fish to be caught NOTE This gear is usually stationary equipment, often, but not always, anchored on the sea bed. Gill nets and entangling nets are exa
26、mples of passive gear. 3.6 gill net panel of netting, usually of rectangular shape, made of thin twine or monofilament yarn, in the meshes of which the fish are caught NOTE The net is suspended vertically in the water by floats and sinkers. 3.7 entangling net loosely hung vertical net that catches f
27、ish by entangling rather than enmeshing them 3.8 trammel net bottom-set net which is made up of of three walls of netting, the two tightly hung outer walls having a larger mesh size than the inner wall which is loosely hung between them NOTE The fish pass through one of the outer walls and become en
28、tangled in the small meshes of the inner wall, after which they push themselves into the second outer wall, thus forming a bag. 4 Principle An objective mesh gauge is inserted into the mesh opening. The mesh is stretched by a movable jaw until a pre-set measurement force is reached. The size of the
29、mesh opening is then measured automatically. 5 Apparatus 5.1 Objective mesh gauge, complying with the requirements of 5.1.1 to 5.1.6. 5.1.1 The objective mesh gauge used for determining mesh openings shall be automatic and electrically driven (see Figure 1). The gauge shall be able to apply selected
30、 longitudinal measuring forces, in the range 5 N to 180 N, to the meshes with a precision of 1 N. Fixed measuring forces of 10 N, 20 N, 50 N and 125 N shall be provided. A built-in system for measuring the applied force is needed. The gauge shall have two jaws, one fixed and one movable, each 2 mm t
31、hick with rounded edges with a radius of 1 mm, to ensure that the jaws slip easily over the twine or yarn. A mesh shall be stretched at a constant speed of (300 30) mm/min by the movable jaw. The gauge shall be able to measure meshes from 10 mm to 300 mm and may have different, detachable, jaws for
32、use on small and large meshes. The measurement precision shall be 1 mm. 5.1.2 The structure of the gauge shall be rigid and shall not distort under load. The body shall be light yet robust and shall weigh no more than 2,5 kg. The gauge shall be made of materials resistant to corrosion under marine c
33、onditions. It shall be water-resistant, be unaffected by dust to rating IP 56 as specified in IEC 60529, and be stable in operation over the temperature range 10 C to + 40 C. The gauge shall be able to withstand temperatures between 25 C and + 65 C during storage and transportation. EN ISO 16663-1:2
34、009 (E) DIN EN ISO 16663-1:2009-07 55.1.3 Gauge operation shall be controlled by software that provides a menu of functions. It shall be possible to operate the gauge with one hand and the functions shall be accessible via external buttons. Data shall be shown on an integral display able to present
35、each measurement, the number of measurements made in a series and the mean value. A store shall be provided capable of holding at least 1 000 measurements and it shall be possible to transmit data to a computer. 5.1.4 The software menu shall contain a suitable function to calculate the mean mesh ope
36、ning, rounded to the nearest 0,1 mm. For so-called “square” meshes, the software shall contain a suitable function to select automatically the longer diagonal of each mesh to calculate the mean mesh opening of the square mesh netting. To allow verification of the selection procedure, the data saved
37、shall include all the measurements made. 5.1.5 The software shall permit automatic self-testing of the electronic and mechanical parts when the gauge is started. If the gauge is ready for use, this shall be shown on the display. If this is not the case, the display shall show an error message and th
38、e gauge shall close down and not be usable. 5.1.6 Some netting will creep under load. The gauge shall respond to this condition by re-applying the pre-set measurement force in accordance with an algorithm in the controlling software which causes the gauge to a) extend the movable jaw into the mesh a
39、t a constant speed of (300 30) mm/min until the pre-set measurement force is reached; b) stop the motor and wait 1 s; c) if the force drops below 80 % of the measurement force, extend the jaw into the mesh until the measurement force is reached once more. Figure 1 Example of an objective mesh gauge
40、5.2 Equipment for producing and maintaining the standard atmosphere for testing. 5.3 Equipment in which samples can be immersed in water preparatory to wet testing. EN ISO 16663-1:2009 (E) DIN EN ISO 16663-1:2009-07 66 Measurement force For the netting of active fishing gear, use: 20 N for meshes 35
41、 mm; 50 N for meshes W 35 mm but 55 mm; 125 N for meshes W 55 mm. For the netting of passive fishing gear, use 10 N for all mesh sizes. 7 Calibration The objective mesh gauge shall be calibrated once a year by an authorized calibration institute. 8 Verification of length and force measurement 8.1 Ve
42、rification of length measurement Verification of the length measurement shall be performed at intervals by inserting the jaws of the gauge into slots of different lengths in a calibrated rigid test plate. An example of such a test plate is shown in Figure 2. Figure 2 Test plate EN ISO 16663-1:2009 (
43、E) DIN EN ISO 16663-1:2009-07 78.2 Verification of force measurement Verification of the force measurement shall be performed at intervals by hanging calibrated weights on the fixed jaw, with the gauge securely held vertically, as shown in Figure 3. The weights shall have the following values: 10 N,
44、 20 N, 50 N and 125 N. Calibration shall only be carried out under stable conditions. Key 1 test weight Figure 3 Force measurement verification 9 Requirements for testing 9.1 General Tests may be carried out in both the dry and wet states, but tests in the wet state are considered to be particularly
45、 appropriate in indicating the behaviour of the netting in use. 9.2 Atmosphere for testing All specimens to be tested in the dry state shall be conditioned in the standard atmosphere specified in ISO 139 until they have reached equilibrium. Where it is not possible to carry out the test in the stand
46、ard atmosphere, the test shall be carried out immediately after removal of the specimen from the standard atmosphere. EN ISO 16663-1:2009 (E) DIN EN ISO 16663-1:2009-07 89.3 Testing in the wet state Specimens to be tested in the wet state shall be a) either immersed in tap water at (20 2) C for not
47、less than 12 h; b) or immersed in a solution of wetting agent at (20 2) C for not less than 1 h. 10 Procedure 10.1 Mesh type The mesh dimension to be measured depends on the mesh type: a) Diamond mesh: The netting shall be stretched in the direction of the long axis of the mesh, i.e. the N-direction
48、 (see Figure 4). If, in knotless netting, the N-direction cannot be determined, then the mesh shall be measured in the direction of the longer axis of the mesh. b) Square mesh: The netting shall be stretched first in the direction of one diagonal of the mesh, then in the direction of the other diago
49、nal. The larger measurement shall be taken as the mesh opening. 10.2 Preparation of the gauge 10.2.1 Select, and fit to the gauge, the appropriate size of jaw for the meshes to be measured. 10.2.2 Ensure that the jaws are clean. 10.2.3 Start the gauge and allow it to perform the self-check. Select the force to be applied. 10.2.4 Verify the jaw size setting. The default setting is “normal”. If small or large jaws are being used, enter the menu and change the jaw size setting accordingly. 10.3 Insertion and operation of the g
