EN 61143-2 EUROPEAN STANDARD NORME EUROPEENNE June 1994 EUROPAISCHE NORM 1 ICS 19.080 Supersedes HD 301 S1:1977 I Descriptors: Measuring instrument, electrical measurement, recorder, X-t recorder, specific tests to X-t recorders English version Electrical measuring instruments - X-t recorders Part 2: Recommended additional test methods (IEC 1143-2:1992) Appareils électriques de mesure Elekrische MeBgerate X-t-Schreiber Enregistreurs X-t Partie 2: Méthodes d'essais complémentaires Teil 2: Empfohlene zusatzliche Prufverfahren (IEC 1143-2:1992) recommandées (CEI 1143-2:1992) This European Standard was approved by CENELEC on 1994-03-08. CENELEC members are bound to comply with the CEN/CENELEC 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 such national standards may be obtained on application to the Central Secretariat or to any CENELECmember. 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 CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,Switzerlandand United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europaisches Komitee fur Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels @ 1994 Copyright reserved to CENELEC members Ref. No.EN 61143-2:1994 E EN 61143-2:1994 Foreword The CENELEC questionnaire procedure, performed for finding out whether or not the International Standard IEC 1143-2:1992 could be accepted without textual changes, has shown that no common modifications were necessary for the acceptance as European Standard. The reference document was submitted to the CENELEC members for formal vote and was approved by CENELEC as EN 61143-2 on 8 March 1994. This European Standard replaces HD 301 S1:1977. The following dates were fixed: -latest date of publication of an identical national standard (dop) 1995-03-15 -latest date of withdrawal of conflicting national (dow) 1995-03-15 standards 2 EN 61143-2:1994 Introduction This test shall be performed at five approximately equal steps within the span, including the lower and This part of IEC 1143 shall be read in conjunction upper limits of the measuring range. with part 1 and IEC 51-9:1988, Direct acting For single channel dotted line recorders, the reading indicating analogue electrical measuring used shall be that of the dot next following the one instruments and their accessories indicating that the steady state has been reached. Part 9: Recommended test methods. Duringthistestthechartshallbedrivenata It gives details of tests which are specific to X-t sufficiently high speed for the individual dots to be recorders. The testing conditions and the more distinguishable. conventional tests, which shall be followed, are Computation: those given in the following list of subclauses from IEC 51-9: The intrinsic error, expressed as a percentage, shall be computed for each selected step as follows: 1.2 3.5.2 Bx-Ba 1.2.8 3.6 a×100 1.2.9 3.7 As 1.2.11 3.8 where A, is the span. 1.2.12 3.17 2.11.1.2 For multiple recorders, the determination 1.2.13 3.18 of the errors shall be carried out on every measuring 3.2 4.1 circuit in sequence, the other measuring circuits being energized so that their record corresponds to 3.4 4.6 the lower limit of the span. 3.5 4.10 2.11.1.3 For multiple channel recorders, the 3.5.2 4.19 procedure is analogous to that given in 2.11.1.2. 3.6 2.11.2 Time-keeping Other clauses from IEC 51-9 may also be applied, if Proced