BS ISO 16063-17-2016 Methods for the calibration of vibration and shock transducers Primary calibration by centrifuge《振动与冲击传感器的校准方法 离心机法一次校准》.pdf

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1、BS ISO 16063-17:2016Methods for the calibration of vibration and shock transducersPart 17: Primary calibration by centrifugeBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 16063-17:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implement

2、ation of ISO 16063-17:2016.The UK participation in its preparation was entrusted to Technical Committee GME/21/2, Mechanical vibration, shock and condition monitoring - Vibration and shock measuring instruments and testing equipment.A list of organizations represented on this committee can be obtain

3、ed on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 580 90054 9 ICS 17.160 Compliance with

4、a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2016.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 16063-17:2016 ISO 2016Methods for the calibrat

5、ion of vibration and shock transducers Part 17: Primary calibration by centrifugeMthodes pour ltalonnage des transducteurs de vibrations et de chocs Partie 17: talonnage primaire par centrifugeurINTERNATIONAL STANDARDISO16063-17First edition2016-06-01Reference numberISO 16063-17:2016(E)BS ISO 16063-

6、17:2016ISO 16063-17:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, includi

7、ng photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +4

8、1 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 16063-17:2016ISO 16063-17:2016(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Requirements for apparatus and environmental conditions 14.1 Calibration environment 14.2 Balanced table or arm (rotational

9、table) 14.3 Rotational frequency measuring instrumentation 24.4 Voltage-measuring instrumentation 35 Preferred values 36 Method 1 (with measurement of the radius of rotation) . 36.1 Test procedure . 36.2 Expression of results 37 Method 2 (without measurement of the radius of rotation) 47.1 Test proc

10、edure . 47.2 Expression of results 4Annex A (informative) Expression of uncertainty of measurement in calibration 5Bibliography 7 ISO 2016 All rights reserved iiiContents PageBS ISO 16063-17:2016ISO 16063-17:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide feder

11、ation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that commit

12、tee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and

13、those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part

14、2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the

15、document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms

16、and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 108, Mech

17、anical vibration, shock and condition monitoring, Subcommittee SC 3, Use and calibration of vibration and shock measuring instruments.This first edition of ISO 16063-17 cancels and replaces ISO 5347-7:1993, which has been technically revised.ISO 16063 consists of the following parts, under the gener

18、al title Methods for the calibration of vibration and shock transducers: Part 1: Basic concepts Part 11: Primary vibration calibration by laser interferometry Part 12: Primary vibration calibration by the reciprocity method Part 13: Primary shock calibration using laser interferometry Part 15: Prima

19、ry angular vibration calibration by laser interferometry Part 16: Calibration by Earths gravitation Part 17: Primary calibration by centrifuge Part 21: Vibration calibration by comparison to a reference transducer Part 22: Shock calibration by comparison to a reference transducer Part 31: Testing of

20、 transverse vibration sensitivity Part 32: Resonance testing Testing the frequency and the phase response of accelerometers by means of shock excitation Part 41: Calibration of laser vibrometers Part 42: Calibration of seismometers with high accuracy using acceleration of gravityiv ISO 2016 All righ

21、ts reservedBS ISO 16063-17:2016ISO 16063-17:2016(E) Part 43: Calibration of accelerometers by model-based parameter identificationThe following parts are under preparation: Part 33: Testing of magnetic field sensitivity ISO 2016 All rights reserved vBS ISO 16063-17:2016BS ISO 16063-17:2016Methods fo

22、r the calibration of vibration and shock transducers Part 17: Primary calibration by centrifuge1 ScopeISO 16063 comprises a series of documents dealing with methods for the calibration of vibration and shock transducers.This part of ISO 16063 lays down detailed specifications for the instrumentation

23、 and procedure to be used for primary calibration of accelerometers using centrifuge calibration.This part of ISO 16063 is applicable to rectilinear accelerometers with zero-frequency response, mainly of the strain gauge or piezoresistive type, and to primary standard and working transducers.It is a

24、pplicable for a calibration range from 10 m/s2to 20 000 m/s2(higher accelerations possible) at 0 Hz.The limits of uncertainty applicable are 1 % of reading.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its ap

25、plication. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 2041, Mechanical vibration, shock and condition monitoring Vocabulary3 Terms and definitionsFor the purposes of this document,

26、 the terms and definitions given in ISO 2041 apply.4 Requirements for apparatus and environmental conditions4.1 Calibration environmentThe standard reference atmospheric conditions are: (23 3) C and 75 % relative humidity max. The temperature, humidity and atmospheric pressure shall be measured and

27、reported.4.2 Balanced table or arm (rotational table)The main component of the calibration apparatus consists of balanced table or arm which rotates about a vertical axis with uniform angular speed. For the calibration range from 10 m/s2to 100 m/s2, the table/arm shall be level within 0,5 of horizon

28、tal. For ranges higher than 100 m/s2, levelling is allowed to within 2. The calibration apparatus shall be placed on a sufficiently heavy base which is sufficiently isolated from the floor vibration.The rotational frequency shall be uniform within 0,05 % of the nominal value.The transducers axis of

29、sensitivity shall be aligned within 0,5.INTERNATIONAL STANDARD ISO 16063-17:2016(E) ISO 2016 All rights reserved 1BS ISO 16063-17:2016ISO 16063-17:2016(E)The radius of rotation to the centre of the transducer mass element shall be measured with an uncertainty less than 0,15 %. If this is not possibl

30、e, Method 2 shall be used (see Clause 7).If the accelerometer is substituted by impedances not sensitive to acceleration, the hum and noise when the centrifuge is rotating at the calibration speeds shall be at least 0,5 % below reading.The apparatus of the main component is illustrated by Figure 1.K

31、ey1 signal conditioner for transducers2 balanced table3 drive motor4 bearing5 vibration isolation stage6 signal coupler7 stone plate8 transducers9 cable10 centre of mass11 rotation centreFigure 1 Illustration of the apparatus of the main component4.3 Rotational frequency measuring instrumentationThe

32、 relative expanded measurement uncertainty (k = 2) contribution of the measurement of rotational frequency shall be 0,05 % or less.2 ISO 2016 All rights reservedBS ISO 16063-17:2016ISO 16063-17:2016(E)4.4 Voltage-measuring instrumentationThe relative expanded measurement uncertainty (k = 2) contribu

33、tion of the voltmeter shall be 0,01 % or less.5 Preferred valuesSix acceleration values, in metres per second squared, equally covering the accelerometer range, shall be chosen from the following series: 10; 20; 50; 100; 200; 500 or their multiples of ten. The reference acceleration shall be 100 m/s

34、2(second choice: 50 m/s2).6 Method 1 (with measurement of the radius of rotation)6.1 Test procedureRotate the table or arm at different frequencies determined by calculation from the standard levels using Formula (1):anr= 422p (1)wheren is the rotational frequency, in hertz;r is the radius of rotati

35、on to the centre of the accelerometer mass element, in metres.Measure the transducer output at each rotational frequency.Determine the reference calibration factor at the reference acceleration. Then, determine the sensitivity for the other calibration amplitudes. The results shall be given as a dev

36、iation from the reference calibration factor in percent.6.2 Expression of resultsThe calibration factor, S, in volts per (metre per second squared) V/(m/s2), is given by Formula (2):SVnr=422p(2)whereV is the transducer output, in volts;n is the rotational frequency, in hertz;r is the radius of rotat

37、ion to the centre of the accelerometer mass element, in metres.When the calibration results are reported, the total uncertainty of the calibration and the corresponding confidence level, calculated in accordance with Annex A, shall also be reported. ISO 2016 All rights reserved 3BS ISO 16063-17:2016

38、ISO 16063-17:2016(E)7 Method 2 (without measurement of the radius of rotation)7.1 Test procedureIf the rotational radius cannot be measured with the specified uncertainty, the transducer can be rotated in two different positions, the radial distance between these to be measured with uncertainty maxi

39、mum of 0,5 %.Measure the two rotational frequencies giving the same transducer output at the two locations.7.2 Expression of resultsThe calibration factor, S, in volts per (metre per second squared), is given by Formula (3):SVnrnn=()41222212p/(3)whereV is the accelerometer output, in volts;n1is the

40、rotational frequency at the first accelerometer position, in hertz;n2is the rotational frequency at the second accelerometer position, in hertz;r is the distance between the two accelerometer positions, in metres.When the calibration results are reported, the total uncertainty of the calibration and

41、 the corresponding confidence level, calculated in accordance with Annex A, shall also be reported.4 ISO 2016 All rights reservedBS ISO 16063-17:2016ISO 16063-17:2016(E)Annex A (informative) Expression of uncertainty of measurement in calibrationA.1 Uncertainty analysis on Method 1Components of unce

42、rtainty that contribute to the uncertainty of the measurement on Method 1 are listed in Table A.1. The combined standard uncertainty, uc, can be expressed by Formula (A.1):uucii=()2110(A.1)where uiis uncertainty component in Table A.1, respectively.The expanded uncertainty, U, shall be determined by

43、 multiplying ucby coverage factor, k, where a value of k = 2.Table A.1 Uncertainty components on Method 1iStandard uncertainty componentSource of uncertaintyRelative uncertainty contributionuyi()Acceleration generation1u()Alignment effect for rotational plane : deviation from rotational planeuya1981

44、()()=,cos2u()Alignment effect of transducer axe : alignment deviation from transducer axeuy21() ()=cos3 uen()Rotational frequency effecten: rotational frequency deviation from nominal valueuy enn32() /=4 uen()DRotational frequency effect (cyclic)en: cyclic rotational frequency deviationuy enn42() /=

45、5 uer()Rotational radius deviation effecter: deviation of radiusuy err5() /=Voltage measurement6 ue()VUncertainty of voltage measurement uy6()7 ua()HHum and noise effect uy7()8 ue()PEffect of power supply uy8()Other factors9 uS()TEffect of temperature uy9()10 uS()hysNon linearity, hysteresis uy10()

46、ISO 2016 All rights reserved 5BS ISO 16063-17:2016ISO 16063-17:2016(E)A.2 Uncertainty analysis on Method 2Components of uncertainty that contribute to the uncertainty of the measurement on Method 2 are listed in Table A2. The combined standard uncertainty, uc, can be expressed by Formula (A.2):uucii

47、=()2110(A.2)where uiis uncertainty component in Table A.2, respectively.The expanded uncertainty, U, shall be determined by multiplying, uc, by coverage factor, k, where a value of k = 2.Table A.2 Uncertainty components on Method 2iStandard uncertainty componentSource of uncertaintyRelative uncertai

48、nty contributionuyi()Acceleration generation1u()Alignment effect for rotational plane : deviation from rotational planeuya1981()()=,cos2u()Alignment effect of transducer axe : alignment deviation from transducer axeuy21() ()=cos3 uen()1Rotational frequency effect at the first transducer positionen1:

49、 rotational frequency deviation from nominal value at rotational n2frequency n1uy enn3112() /=4 uen()2Rotational frequency effect at the second transducer positionen2: rotational frequency deviation from nominal value at rotational frequencyuy enn4222() /=5 uer()DDistance measurement between the two transducer positions effecter: deviation of measurement between the positions, r: Distance between the positionsuy err5() /=Voltage measurement6 ue()VUncertainty of voltage measurem