1、BRITISH STANDARD BS EN 60873-2:2004 Electrical and pneumatic analogue chart recorders for use in industrial process control systems Part 2: Guidance for inspection and routine testing The European Standard EN 60873-2:2004 has the status of a British Standard ICS 25.040.40 BS EN 60873-2:2004 This Bri
2、tish Standard was published under the authority of the Standards Policy and Strategy Committee on 12 May 2004 BSI 12 May 2004 ISBN 0 580 43772 8 National foreword This British Standard is the official English language version of EN 60873-2:2004. It is identical with IEC 60873-2:2004. The UK particip
3、ation in its preparation was entrusted by Technical Committee GEL/65, Measurement and control, to Subcommittee GEL/65/2, Elements of systems, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The Br
4、itish Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards O
5、nline. 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 does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the respon
6、sible international/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. Summary of pages This document comprises a front cover, an inside front cove
7、r, the EN title page, pages 2 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 60873-2 NORME EUROPENNE EUROPISCHE NORM March 200
8、4 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means reserve
9、d worldwide for CENELEC members. Ref. No. EN 60873-2:2004 E ICS 25.040.40 English version Electrical and pneumatic analogue chart recorders for use in industrial process control systems Part 2: Guidance for inspection and routine testing (IEC 60873-2:2004) Enregistreurs de courbes lectriques et pneu
10、matiques pour une utilisation dans les systmes de processus industriels Partie 2 : Guide pour les inspections et les essais individuels (CEI 60873-2:2004) Elektrische und pneumatische analoge Streifenschreiber zum Einsatz in Systemen industrieller Prozessleitteichnik Teil 2: Anleitung fr die Abnahme
11、 und Betriebsprfung (IEC 60873-2:2004) This European Standard was approved by CENELEC on 2004-03-01. 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
12、. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by transla
13、tion 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, G
14、ermany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Foreword The text of document 65B/513/FDIS, future edition 1 of IEC 60873-2, prepared by SC 65B, Devices,
15、of IEC TC 65, Industrial-process measurement and control, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60873-2 on 2004-03-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical nationa
16、l standard or by endorsement (dop) 2004-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2007-03-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60873-2:2004 was approved by CENELEC as a Europe
17、an Standard without any modification. _ Page2 EN608732:2004 ELECTRICAL AND PNEUMATIC ANALOGUE CHART RECORDERS FOR USE IN INDUSTRIAL PROCESS CONTROL SYSTEMS Part 2: Guidance for inspection and routine testing 1 Scope and object This part of IEC 60873 applies to electrical and pneumatic analogue chart
18、 recorders (for use in industrial-process control systems), operating from a standardized signal which may be used in process control. It is intended that continuous and dotted line traces, and multiple pen and multiple-channel instruments should be covered. Some tests may not apply to all instrumen
19、ts and additional tests may be required for certain types of recorders. The object of this standard is to provide technical guidance for inspection and routine testing of electrical and pneumatic analogue chart recorders, for instance, as acceptance tests or after repair. For a full evaluation, or w
20、here a recorder is to be used under arduous conditions, (for example, high temperatures), IEC 60873-1 should be used. Whenever possible any tests carried out are to be in accordance with IEC 61298, and the person carrying out the tests needs to have a copy of it to hand and be familiar with it. Quan
21、titative criteria for acceptable performance should be established by agreement between manufacturer and user, and the report on the tests shall make clear which tests were carried out. The requirements of this standard shall be effective when agreed by the manufacturer and the user. 2 Normative ref
22、erences 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) applies. IEC 60410:1973, Sampling plans and proced
23、ures for inspection by attributes IEC 60873-1, Electrical and pneumatic analogue chart recorders for use in industrial-process control systems Part 1: Methods for performance evaluation 1IEC 61010-1:2001, Safety requirements for electrical equipment for measurement, control, and laboratory use Part
24、1: General requirements IEC 61298 (all parts), Process measurement and control devices General methods and procedures for evaluating performance 1To be published. Page3 EN608732:2004 3 Terms and definitions For the purposes of this document, the terms and definitions of IEC 60873-1, together with th
25、e following, apply. 3.1 acceptance test test which intends to prove to the user that the device complies with certain conditions of its requirements as they appear in the contract 4 Sampling for test If, by agreement between user and manufacturer, tests are to be performed on a sample lot, it is rec
26、ommended that a sampling method such as that presented in IEC 60410 be selected. When sampling is used, recorders to be tested may be chosen by the users inspector. 5 Performance test Environmental conditions at the location of testing shall be recorded (see 5.1 of IEC 60873-1). Adjustments: For zer
27、o, span and damping, the routine tests shall be carried out with the final manufacturing adjustments (for example, as an acceptance test) or with the adjustments determined by the user (for example, after repair). The following tests shall be performed unless another series of tests is agreed betwee
28、n user and manufacturer. NOTE Ink and paper should be in accordance with the manufacturers specifications. A chart speed of approximately 20 mm/h should preferably be used. 5.1 Measured error and hysteresis (see Clause 6 of IEC 60873-1) Prior to recording observations, the device under test shall be
29、 exercised by three full-range traverses in each direction. The input-output characteristic under reference conditions shall be measured in one measurement cycle traversing full range in each direction. For this, at least five points of measurements should be distributed over the range, for example,
30、 in steps of 25 % from 0 % to 100 % and then from 100 % to 0 %. Tapping or vibrating the instrument under test is not allowed, unless otherwise stated. Adjust the input to bring the output to the required value. Measure the input at this level and determine the difference between this input and the
31、specified input to give this output value. As the result, report the difference as “measured error including hysteresis“ expressed in per cent of input span. NOTE For this test, measured error is defined as the greatest positive or negative error in the measuring cycle. Hysteresis (including deadban
32、d) is defined as the greatest difference between upscale and downscale readings which are determined at each value of output. 5.2 Effects of influence quantities 5.2.1 Power supply variations (see 12.1 of IEC 61298-3) Adjust the input signal to bring the output to approximately 95 % of span. Measure
33、 and report the change of input that is necessary to bring the output level to its original value in % of span at the following variations in power supply or at the manufacturers stated limits, if smaller: Page4 EN608732:2004 voltage variation = +10 %, 15 % of nominal a.c. or +20 %, 15 % of nominal
34、d.c. voltage; supply pressure variation = +10 % 15 % of nominal supply pressure (see 12.8 of IEC 61298-3) 5.2.2 Over-range (see Clause 10 of IEC 61298-3) With the input adjusted to bring the output first to approximately 5 % and then to approximately 95 % span, note the input levels. The input shall
35、 then be increased gradually to the maximum overrange specified by the manufacturer. After the over-range has been applied for 1 min, the input shall be reduced to the nominal lower range value. After a further 5 min have elapsed, using the same output values as before, determine the changes require
36、d in input values to bring the output back to the originally used values. The changes in input determined after over-ranging shall be reported, expressed as per cent input span. NOTE If over-ranging produces significant thermal effects, the duration of application should be increased accordingly. 5.
37、3 Recording quality The instrument shall be connected as for normal operation and an alternating input applied with a peak-to-peak amplitude equal to half the span and centred at the mean of the upper and lower range input values. The frequency selected shall be such that all recorded traces can be
38、clearly distinguished (not more than 1 cycle per millimeter chart travel). After an appropriate number of traverses it shall be noted a) whether all traces are without interruption of the ink flow; b) whether the widths of the recorded lines change during the test; c) for multi-channel recorders, wh
39、ether the ink colours change over a longer distance than 5 mm after crossing different colour traces. 5.4 Paper speed With the chart-drive operating as normal, check by observing over a suitable period of time that the paper speed is within specification. 5.5 Step response With the chart being drive
40、n at its fastest selectable speed, apply a suitably large step change of input signal and check that the step response of the pen mechanism is within specification. 6 Safety The instrument shall be checked against the requirements of IEC 61010-1. _ Page5 EN608732:2004 Annex ZA (normative) Normative
41、references to international publications with their corresponding European publications 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 docume
42、nt (including any amendments) applies. NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60410 1973 Sampling plans and procedures for inspection by attributes - - IEC 60873-1 - 1)El
43、ectrical and pneumatic analogue chart recorders for use in industrial-process control systems Part 1: Methods for performance evaluation EN 60873-1 2004 2)IEC 61010-1 2001 Safety requirements for electrical equipment for measurement, control, and laboratory use Part 1: General requirements EN 61010-
44、1 + corr. June 2001 2002 IEC 61298 Series Process measurement and control devices - General methods and procedures for evaluating performance EN 61298 Series 1)Undated reference. 2)Valid edition at date of issue. Page6 EN608732:2004blankBS EN 60873-2:2004 BSI 389 Chiswick High Road London W4 4AL BSI
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