1、BRITISH STANDARD BS EN 60873-1:2004 Electrical and pneumatic analogue chart recorders for use in industrial-process control systems Part 1: Methods for performance evaluation The European Standard EN 60873-1:2004 has the status of a British Standard ICS 25.040.40 BS EN 60873-1:2004 This British Stan
2、dard was published under the authority of the Standards Policy and Strategy Com mittee on 28 April 2004 BSI 28 April 2004 ISBN 0 580 43658 6 National foreword This British Standard is the official English language version of EN 60873-1:2004. It is identical with IEC 60873-1:2003. It supersedes BS EN
3、 60873:1993 which is withdrawn. The UK participation 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 re
4、quest 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 Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI
5、 Electronic Catalogue or of British Standards Online. 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 enquirer
6、s to understand the text; present to the responsible 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 documen
7、t comprises a front cover, an inside front cover, the EN title page, pages 2 to 17 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 60873-1 NORME EUROPENNE
8、 EUROPISCHE NORM January 2004 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 f
9、orm and by any means reserved worldwide for CENELEC members. Ref. No. EN 60873-1:2004 E ICS 25.040.40 Supersedes EN 60873:1993English version Electrical and pneumatic analogue chart recorders for use in industrial-process control systems Part 1: Methods for performance evaluation (IEC 60873-1:2003)
10、Enregistreurs de courbes lectriques et pneumatiques pour une utilisation dans les systmes de processus industriels Partie 1 : Mthodes pour lvaluation des performances (CEI 60873-1:2003) Elektrische und pneumatische analoge Streifenschreiber zum Einsatz in Systemen industrieller Prozessleittechnik Te
11、il 1: Verfahren zu Bewertung des Betriebsverhaltens (IEC 60873-1:2003) This European Standard was approved by CENELEC on 2003-12-01. 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
12、 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 CENELEC member. This European Standard exists in three official versions (English, French, German). A version in an
13、y 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, Czech Republic, Denmark, Est
14、onia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 60873-1:2004 - 2 - Foreword The text of document 65B/494/FDIS, future edition 1
15、 of IEC 60873-1, prepared by SC 65B, Devices, of IEC TC 65, Industrial-process measurement and control, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60873-1 on 2003-12-01. This European Standard is to be used in conjunction with EN 61298. This European Standard su
16、persedes EN 60873:1993. The main changes with respect to EN 60873:1993 concern the updating of methods for inspection and routine testing of devices, and recorder testing requirements now comply with EN 61298. The following dates were fixed: latest date by which the EN has to be implemented at natio
17、nal level by publication of an identical national standard or by endorsement (dop) 2004-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2006-12-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC
18、60873-1:2003 was approved by CENELEC as a European Standard without any modification. _ EN607831:2004Page2 EN608731:2004 4 60873-1 IEC:2003(E) INTRODUCTION The methods of evaluation specified in this part of IEC 60873 are intended for use by manufacturers to determine the performance of their produc
19、ts and by users or independent testing establishments to verify manufacturers performance specifications. The test conditions in this standard, for example, the range of ambient temperatures and power supply, represent those which commonly arise in use. Consequently, the values specified herein shal
20、l be used where no other values are specified by the manufacturer. The tests specified in this standard are not necessarily sufficient for instruments specifically designed for unusually arduous duties. Conversely, a restricted series of tests may be suitable for instruments designed to perform with
21、in a more limited range of conditions. It will be appreciated that the closest communication should be maintained between the evaluating body and the manufacturer. Note should be taken of the manufacturers specifications for the instrument when the test programme is being decided, and the manufactur
22、er should be invited to comment on both the test programmes and the results. BSEN607831:20042 Page3 EN608731:200460873-1 IEC:2003(E) 5 ELECTRICAL AND PNEUMATIC ANALOGUE CHART RECORDERS FOR USE IN INDUSTRIAL-PROCESS SYSTEMS Part 1: Methods for performance evaluation 1 Scope and object This part of IE
23、C 60873 provides methods for determining the performance of all electrical and pneumatic analogue chart recorders operating from a standardized signal which may be used in process control. It is intended that continuous and dotted-line traces, multiple-pen and multiple-channel instruments should be
24、covered. Some tests should not apply to all instruments and additional tests may be required for certain types of recorders. The object of this standard is to specify uniform methods of test for the evaluation of the performance of electrical and pneumatic analogue chart recorders operating from a s
25、tandardized signal which may be used in process control. When a full evaluation in accordance with this standard is not required, those tests which are required should be performed and the results reported in accordance with those parts of the standard which are relevant. It should be made clear in
26、such a report that the evaluation reported is not a full evaluation and the parts omitted should be indicated. 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 reference
27、s, the latest edition of the referenced document (including any amendments) applies. IEC 60050-351:1998, International Electrotechnical Vocabulary (IEV) Part 351: Automatic control IEC 61010-1:2001, Safety requirements for electrical equipment for measurement, control, and laboratory use Part 1: Gen
28、eral requirements IEC 61187:1993, Electric and electronic measuring equipment Documentation IEC 61298-1:1995, Process measurement and control devices General methods and procedures for evaluating performance Part 1: General considerations IEC 61298-2:1995, Process measurement and control devices Gen
29、eral methods and procedures for evaluation performance Part 2: Tests under reference conditions IEC 61298-3:1998, Process measurement and control devices General methods and procedures for evaluation performance Part 3: Tests for the effects of influence quantities IEC 61298-4:1995, Process measurem
30、ent and control devices General methods and procedures for evaluation performance Part 4: Evaluation report content BSEN607831:20043 Page4 EN608731:2004 6 60873-1 IEC:2003(E) 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-351 and in IEC 61298-
31、1, IEC 61298-2 and IEC 61298-3 together with the following additional definitions, apply. 3.1 friction effect in the case of continuous line recorders, effect which friction of the marking device on the chart may have on the record even though the chart is moving slowly 3.2 measuring range region be
32、tween the limits within which a quantity is measured, or received, expressed by stating the lower and upper range values (for example, 0 Pa, 20 Pa). NOTE Instruments may be supplied with manual or automatic means of adjusting the range. As used in this standard, the term “range“ and the definitions
33、below apply to the characteristics of the instruments for a specified setting of the adjustment means. The zero value of the measured variable is “elevated“ if it is greater than the lowest range value and “suppressed“ if it is less than the lowest range value 3.3 output position of the marking devi
34、ce of a recorder. If an indicator is directly connected to the marking device, the indicated value is tested as a second output (see 10.4 for remarks on parallax) 3.4 recorder instrument which records, with a pen or other marking device, the instantaneous, effective or average value of the signal 3.
35、5 recorder, multiple-pen recorder for more than one input signal providing an individual pen or other marking device for each input signal 3.6 recorder, multiple-channel recorder for more than one input signal which successively connects its internal measuring circuit(s) to different input signals,
36、thereby recording the values of the input signals in sequence 3.7 record trace marked on the instrument chart in response to an input signal 3.8 time per point time interval between two immediately successive readings of a multiple-channel recorder, generally of signals in different external measuri
37、ng circuits 3.9 zero adjustment means provided in an instrument to cause a parallel shift in the input-output relationship BSEN607831:20044 Page5 EN608731:200460873-1 IEC:2003(E) 7 4 General testing procedures General requirements for measurement procedure will be found in Clause 7 of IEC 61298-1. O
38、ther specific procedures can be found below. 4.1 Selection of ranges for test Where there are switched ranges (or dial settings), for example, gain, the tests shall be repeated to cover all ranges. Where the DUT is supplied calibrated for use, the first set of tests shall be carried out without adju
39、stment. a) The recorder shall be put into operation according to the manufacturers instructions; in particular, those relating to the preliminary adjustments. NOTE The chart and ink supplied by the manufacturer for the recorders should be used for all tests. b) Unless otherwise stated, where the spa
40、n is adjustable other than to take up manufacturing tolerances, the tests should be carried out with the span adjustment set approximately at the manufacturers stated minimum and maximum and at an intermediate value. c) Unless otherwise stated, where the zero adjustment is adjustable other than to t
41、ake up manufacturing tolerances, such as devices equipped with means for suppression or elevation of zero, the tests should be carried out with the elevation/suppression adjustment set for its minimal effect, then at its extreme values. If the extent of adjustment is more than twice the maximum span
42、, tests should also be carried out with the adjustment set approximately at the arithmetic mean of the two extreme values of elevation and/or suppression (see also 4.1.1.2 of IEC 61298-2). NOTE Testing of an instrument with provision for substantial adjustment of both span and zero in accordance wit
43、h 4.1b) and 4.1c) may require an impractically large number of tests. Preliminary tests should be conducted to determine the effect of changing span and zero adjustments on the characteristic being measured so that redundant tests can be eliminated from the test programme in cases where the characte
44、ristic can be inferred reliably from fewer tests. For example, hysteresis and dead band may not be significantly affected by selection of the lower and upper range value if the span is held constant and may often be calculated for different spans from measurements at a single-span setting. In any ca
45、se, the report should clearly indicate relevant values of the measured parameters for each setting of the adjustments so that the values of measured error, hysteresis, dead band, etc., are all referenced to the same adjustment of the recorder. 4.2 Zero and span adjustment Zero and span should be adj
46、usted to make the actual characteristic conform closely to ideal values at the upper and lower range limits before carrying out each test specified in this standard. When this is done, the fact shall be stated in the evaluation report. 4.3 Information to be reported Unless otherwise agreed, the test
47、 results shall be expressed as percentages of output span. When performance characteristics are specified, they shall be tabulated beside the actual test results. The limit of error of the measuring systems used for the test shall be stated in the test report and should be smaller than, or equal to,
48、 one-quarter of the stated limit of error of the instrument tested. 4.4 Other procedures a) An adequate time, as specified by the manufacturer, shall be allowed after switching on the power supply in order to allow temperature within the instrument to stabilize. In the absence of a manufactures spec
49、ification, a period of at least 30 min should be allowed. BSEN607831:20045 Page6 EN608731:2004 8 60873-1 IEC:2003(E) b) In performing tests on a multiple-channel recording instrument, the measured quantity shall be applied to the instrument under test and to a reference instrument and shall be varied so that the required value is shown on the reference instrument. The determination of deviati
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1