1、BRITISH STANDARD Temperature recorders and thermometers for the transport, storage and distribution of chilled, frozen, deep- frozedquick-frozen food and ice cream- Periodic verification The European Standard EN 13486:2002 has the status of a British Standard ICs 27.200; 97.130.20 BS EN 13486:2002 p
2、resent to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this subcommittee can be obta
3、ined on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” f
4、acility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obl
5、igations. This British Standard. having - been prepared under the direction of the Engineering Summary Of pages Sector Policv and Stratenv This document comprises a front cover, an inside front cover, the EN title page, -_ Committee, was published pages 2 to 12. an inside back cover and a back cover
6、. under the authority of the Standards policy and Strategy Committee on 28 January 2002 The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 28 January 2002 ISBN O 580 38909 X EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13486 November 2001 ICs
7、 17.200.20; 67.260 English version Temperature recorders and thermometers for the transport, storage and distribution of chilled, frozen, deep-frozen/quick-frozen food and ice-cream - Periodic verification Enregistreurs de temprature et thermomtres pour le transport, lentreposage et la distribution
8、des denres alimentaires rfrigres, congeles et surgeles et des crmes glaces -Vrification priodique Temperaturregistriergerte und Thermometer fr den Transport, die Lagerung und die Verteilung von gekhlten, gefrorenen, tiefgefrorenen Lebensmitteln und Eiskrem - Regelmige Prfungen This European Standard
9、 was approved by CEN on 28 September 2001. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning su
10、ch national standards may be obtained on application to the 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 translation under the responsibility of a CEN member into its own language a
11、nd notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerl
12、and and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No.
13、 EN 13486:2001 E EN 13486:2001 (E) Contents Page Foreword . 3 1 2 3 4 5 5.1 5.2 5.3 5.4 5.5 5.6 6 6.1 6.2 6.3 6.4 7 4 . . Terms and definitions Frequency of verification . 4 . 5 . 5 . 5 . 5 . 5 . 7 . 7 Method of verification of duration of temperature recordings . on by making a test recording . on
14、by other means Expression of results . Annex A (informative) Example of verification report 9 . 11 12 Annex B (informative) Life cycle sheet . Bibliography . 2 EN 13486:2001 (E) Foreword This European Standard has been prepared by Technical Committee CEN/TC 141, Pressure gauges - Thermometers - Mean
15、s of measuring and/or recording temperature in the cold chain, the Secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2002, and conflicting national standar
16、ds shall be withdrawn at the latest by May 2002. The Annexes A and B are informative. This standard contains a Bibliography. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgi
17、um, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 3 EN 13486:2001 (E) 1 Scope The present document sets the verification procedure for temperature recorders and thermom
18、eters for measuring the air and the products intended to equip the means used for the transport, storage and distribution of chilled, frozen, deep-frozenlquick-frozen food and ice-cream and which comply with standards EN 12830 and EN 13485 (measurement classes and ranges). 2 Normative references Thi
19、s European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these public
20、ations apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 12830, Temperafure recorders for fhe fransporf, sforage and disfribufion of chilled, frozen, deep-
21、frozenlquick-frozen food and ice-cream - Tesfs, performance, suifabilify. EN 13485, Thermomefers for measuring fhe air and producf femperafure for fhe fransporf, sforage and disfribufion of chilled, frozen, deep-frozenlquick-frozen food and ice-cream - Tesfs, performance, suifabilify. EN 3001 2-1, Q
22、ualify assurance requiremenfs for measuring equipmenf - Parf 1: Mefrological confirmafion sysfem for measuring equipmenf (IS0 10012-1:1992). EN IS0 9000, Qualify managemenf sysfems - Fundamenfals and vocabulary (IS0 9000:2000). 3 Terms and definitions For the purposes of this European Standard, the
23、terms and definitions of EN 12830, EN 13485, EN IS0 9000 and the following terms and definitions apply. 3.1 verification confirmation and provision of evidence that the specified requirements have been fulfilled 1) NOTE 1 In connection with the management of measuring equipment, verification provide
24、s a means for checking that the deviations between values indicated by a measuring instrument and corresponding known values of a measured quantity are consistently smaller than the maximum allowable error defined in a standard, regulation or specification peculiar to the management of the measuring
25、 equipment. NOTE 2 The result of verification leads to a decision either to restore to service, or to perform adjustments, or to repair, or to downgrade, or to declare obsolete. A written trace of the verification performed is kept on the measuring instruments individual record. 3.2 maximum permissi
26、ble errors; limits of permissible error (of a measuring instrument) extreme values of an error permitted by specifications, regulations etc., for a given measuring instrument 2) ) Definition of EN IS0 9000. Definition of VIM. 4 EN 13486:2001 (E) Class Maximum calibration uncertainty of the working s
27、tandard thermometer 3.3 working standard standard that is used routinely to calibrate or check material measures, measuring instruments or reference materials 2) 03 1 2 f 0,l f 0,2 f 0,5 NOTE 1 A working standard is usually calibrated against a reference standard NOTE 2 A working standard used routi
28、nely to ensure that measurements are being carried out correctly is called a check standard. 4 Frequency of verification The frequency of the checks depends on the requirements of the user, taking account of the manufacturers specifications. If the temperature measuring instrument is mounted on a ve
29、hicle which is subjected to an annual or periodic maintenance inspection in an agreed vehicle test station, then the verification of these measuring instruments shall be done at the same time. NOTE 1 Nevertheless it is recommended that a check be carried out every year by the manufacturer or worksho
30、ps which are authorized by him or authorized verification services, when the temperature recorders and thermometers have been used over this period. NOTE 2 It is recommended to have a systematic verification following a period of non-use exceeding the period adopted by the user or when an operating
31、incident or a deterioration is noted or supposed, or during an intervention such as the introduction of a new sensor, except when permitted by the manufacturer. 5 Method of verification of temperature measurement 5.1 General The method used is the measurement by direct comparison of the instrument u
32、nder test and the working standard thermometer. 5.2 Environmental conditions It shall be ascertained that the environmental conditions for the tests are compatible with the apparatus to be verified and with the measuring instruments used (disturbances caused by, for example welding unit, inverters,
33、high voltage cables). 5.3 Working standard Table 1 gives the maximum calibration uncertainty for the verification measurement range, with a one-year calibration interval. Table 1 -Criterion for selection of working standard Values in dearees Celsius 5 EN 13486:2001 (E) Class Maximum uncertainty of t
34、he verification 5.4 Additional equipment 03 1 2 f 0,3 f 0,5 f1 Climatic container or thermostatic bath or any suitable equipment for one-site verification. The choice shall be in accordance with the requirements in Table 2. Table 2 -Criterion for selection of additional equipment Values in dearees C
35、elsius 5.5 Procedure 5.5.1 General A detailed procedure of the operating method shall be drawn up, indicating the operating sequence and complying with the verification operations according to EN 30012-1. 5.5.2 Preliminary operations If necessary: - cleaning of the thermometer or the temperature rec
36、order and the sensor(s); - verification of the display or recorder (self-test) and connector(s); - possible change of battery or its recharge; - verification of the electrical connections. Then: - stabilization of the temperature of the sensors (pay attention to the response time, temperature delay,
37、 heat radiation, etc.); - for recorders, verify the proper functioning of the clock or of the diagram recording system according to manufacturers specifications. 5.5.3 Verification measurement(s) The verification operation shall be conducted at a temperature within f5 “C of the temperature at which
38、the equipment is most frequently used, unless otherwise specified by the manufacturer, without exceeding the nominal measuring range of the equipment. Climatic container or thermostatic bath as referred to in 5.4 shall be used when praticable. If the verification is conducted on site, suitable equip
39、ment for the verification proposed by the manufacturer, if any, shall be used; if not, an appropriate measurement method shall be applied to comply with the following requirements: - maximum thermal coupling between the sensors; - minimum drift of the measured temperature; - sufficient time for the
40、reading to become stable. 6 EN 13486:2001 (E) 5.6 Condition of acceptance This operation consists of comparing the results of measurements and calculating errors noted, taking into account the measurement uncertainty of the working standard thermometer presented in Table 1 to verify if these measure
41、ments comply with the relevant specification of limit of permissible error as given in the standards. This specification shall be at least class 2 of the standards on temperature recorders (EN 12830) and thermometers (EN 13485:2001) irrespective of the original class of the appliance. 6 Method of ve
42、rification of duration of temperature recordings 6.1 General The purpose of this verification is to ensure that the duration of recordings is within specification. 6.2 Verification of recording duration by making a test recording For this test the recorder may be set to its fastest chart speed or sh
43、ortest recording interval. The actual time for a test recording is measured with a suitable clock with a relative error 5 0,02 % and this is compared with the time measured on the recorder. 6.2.1 play if applicable. The recorder is put into operation and allowed to run for sufficient time to take up
44、 any mechanical 6.2.2 clock is started. The recorded temperature is then allowed to return to normal. A sudden and repeatable change is made to the recorded temperature and at the same time the NOTE The recorded temperature may be changed by any suitable means, such as immersing the sensor in ice an
45、d water or simulating a temperature change with special equipment. 6.2.3 specification. The recording is left to run for sufficient time to verify that the recording duration is within NOTE An estimate of the number of minutes needed is given by the following formula: 100 t e where t is the shortest
46、 measurable time interval in minutes on the recording; e is the maximum permissible relative error. 6.2.4 in 6.2.2. The procedure of 6.2.2 is repeated and the clock is stopped at the same point where it was started 6.2.5 6.2.4. The percentage error is given by the following formula: The recording du
47、ration is measured on the recorder between the points marked in steps 6.2.2 and where t, is the duration measured on clock; t, is the duration measured on recorder 7 EN 13486:2001 (E) Value measured by the working standard (A) - 6.3 Verification of recording duration by other means Value measured by
48、 the Difference equipment under test (BI B-A - - If the manufacturer of the recorder has provided a means of determining the percentage error of the recording duration by some special test facility or procedure, then this may be used instead of the method defined in 6.2. The manufacturers instructio
49、ns shall be followed, and shall be referred to in the verification report. 6.4 Conditions of acceptance of duration The relative error of recording duration shall be less than or equal to the maximum permissible relative error given in the standard EN 12830. 7 Expression of results The results shall be presented as shown in Table 3. Table 3 - Example for the presentation of results If the difference B - A is higher than the maximum permissible error: refusal or new calibration. A verification report shall be completed for each verification including all the items
