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AS 1038.24-1998 (R2013)
M00004684
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AS 1038.24-1998 (R2013)
Coal and coke - Analysis and testing Guide to the evaluation of measurements made by on-line coal analysers
Standards Australia
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Table of Contents
<toc>
<bookmarktable>
<bookmark index='0'>
<pageno>1</pageno>
<text>AS 1038.24-1998 COAL AND COKE - ANALYSIS AND TESTING - GUIDE TO THE EVALUATION OF MEASUREMENTS MADE BY ON-LINE COAL ANALYSER</text>
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<pageno>4</pageno>
<text>PREFACE</text>
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<bookmark index='2'>
<pageno>5</pageno>
<text>CONTENTS</text>
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<bookmark index='3'>
<pageno>6</pageno>
<text>FOREWORD</text>
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<bookmark index='4'>
<pageno>7</pageno>
<text>1 SCOPE</text>
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<bookmark index='5'>
<pageno>7</pageno>
<text>2 REFERENCED DOCUMENTS</text>
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<bookmark index='6'>
<pageno>7</pageno>
<text>3 DEFINITIONS</text>
<bookmark index='7'>
<pageno>7</pageno>
<text>3.1 Absolute dynamic precision</text>
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<bookmark index='8'>
<pageno>7</pageno>
<text>3.2 Accuracy</text>
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<bookmark index='9'>
<pageno>8</pageno>
<text>3.3 Bias</text>
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<bookmark index='10'>
<pageno>8</pageno>
<text>3.4 By-line type installation</text>
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<bookmark index='11'>
<pageno>8</pageno>
<text>3.5 Comparative test method</text>
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<bookmark index='12'>
<pageno>8</pageno>
<text>3.6 Comparison period</text>
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<bookmark index='13'>
<pageno>8</pageno>
<text>3.7 Interrogation process</text>
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<bookmark index='14'>
<pageno>8</pageno>
<text>3.8 Interrogation volume</text>
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<bookmark index='15'>
<pageno>8</pageno>
<text>3.9 Interrogation zone</text>
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<bookmark index='16'>
<pageno>8</pageno>
<text>3.10 Measurand</text>
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<bookmark index='17'>
<pageno>8</pageno>
<text>3.11 On-belt type installation</text>
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<bookmark index='18'>
<pageno>8</pageno>
<text>3.12 On-line analyser</text>
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<bookmark index='19'>
<pageno>8</pageno>
<text>3.13 Precision</text>
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<bookmark index='20'>
<pageno>8</pageno>
<text>3.14 Reference test method</text>
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<bookmark index='21'>
<pageno>8</pageno>
<text>3.15 Reference value</text>
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<bookmark index='22'>
<pageno>8</pageno>
<text>3.16 Relative dynamic precision</text>
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<bookmark index='23'>
<pageno>8</pageno>
<text>3.17 Static precision</text>
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</bookmark>
<bookmark index='24'>
<pageno>8</pageno>
<text>4 SAFETY</text>
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<bookmark index='25'>
<pageno>9</pageno>
<text>5 ANALYSER INSTALLATIONS</text>
<bookmark index='26'>
<pageno>9</pageno>
<text>5.1 General</text>
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<bookmark index='27'>
<pageno>9</pageno>
<text>5.2 Methods of analysis</text>
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<bookmark index='28'>
<pageno>9</pageno>
<text>5.3 Installation configurations</text>
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</bookmark>
<bookmark index='29'>
<pageno>11</pageno>
<text>6 EVALUATION PROCEDURES</text>
<bookmark index='30'>
<pageno>11</pageno>
<text>6.1 Introduction</text>
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<bookmark index='31'>
<pageno>12</pageno>
<text>6.2 Steps in evaluation</text>
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</bookmark>
<bookmark index='32'>
<pageno>14</pageno>
<text>7 EVALUATION OF INSTRUMENT STABILITY</text>
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<pageno>14</pageno>
<text>7.1 Introduction</text>
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<bookmark index='34'>
<pageno>14</pageno>
<text>7.2 Initial stability measurement</text>
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<bookmark index='35'>
<pageno>15</pageno>
<text>7.3 Subsequent stability measurement</text>
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</bookmark>
<bookmark index='36'>
<pageno>15</pageno>
<text>8 EVALUATION OF CALIBRATION</text>
<bookmark index='37'>
<pageno>15</pageno>
<text>8.1 Introduction</text>
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<bookmark index='38'>
<pageno>16</pageno>
<text>8.2 Two-way comparative test</text>
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<bookmark index='39'>
<pageno>16</pageno>
<text>8.3 Calibration maintenance using reference material</text>
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</bookmark>
<bookmark index='40'>
<pageno>17</pageno>
<text>9 EVALUATION OF OPERATIONAL MEASUREMENT PERFORMANCE</text>
<bookmark index='41'>
<pageno>17</pageno>
<text>9.1 Introduction</text>
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<bookmark index='42'>
<pageno>17</pageno>
<text>9.2 Relative dynamic precision</text>
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<bookmark index='43'>
<pageno>18</pageno>
<text>9.3 Absolute dynamic precision</text>
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</bookmark>
<bookmark index='44'>
<pageno>19</pageno>
<text>10 APPLICATION TO SPECIFIC SITUATIONS</text>
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<bookmark index='45'>
<pageno>21</pageno>
<text>APPENDIX A - REFERENCES</text>
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<bookmark index='46'>
<pageno>22</pageno>
<text>APPENDIX B - EXAMPLE BLOCK DIAGRAMS OF SYSTEMS</text>
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<pageno>22</pageno>
<text>B1 ON-BELT TYPE</text>
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<bookmark index='48'>
<pageno>23</pageno>
<text>B2 BY-LINE TYPE</text>
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</bookmark>
<bookmark index='49'>
<pageno>24</pageno>
<text>APPENDIX C - SOURCES OF MEASUREMENT VARIATION</text>
<bookmark index='50'>
<pageno>24</pageno>
<text>C1 ERRORS ATTRIBUTABLE TO THE REFERENCE METHOD</text>
<bookmark index='51'>
<pageno>24</pageno>
<text>C1.1 General</text>
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<bookmark index='52'>
<pageno>24</pageno>
<text>C1.2 Sampling</text>
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<bookmark index='53'>
<pageno>25</pageno>
<text>C1.3 Manual sampling</text>
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<bookmark index='54'>
<pageno>25</pageno>
<text>C1.4 Calibration sampling</text>
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<bookmark index='55'>
<pageno>27</pageno>
<text>C1.5 Sample preparation</text>
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<bookmark index='56'>
<pageno>27</pageno>
<text>C1.6 Testing</text>
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<bookmark index='57'>
<pageno>28</pageno>
<text>C2 ERRORS ATTRIBUTABLE TO THE ANALYSER</text>
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<pageno>28</pageno>
<text>C2.1 General</text>
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<bookmark index='59'>
<pageno>28</pageno>
<text>C2.2 Instrumental characteristics</text>
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<bookmark index='60'>
<pageno>28</pageno>
<text>C2.3 Presentation</text>
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<bookmark index='61'>
<pageno>28</pageno>
<text>C2.4 Calibration</text>
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<bookmark index='62'>
<pageno>28</pageno>
<text>C2.5 Mechanical sampling and preparation</text>
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</bookmark>
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<bookmark index='63'>
<pageno>31</pageno>
<text>APPENDIX D - COMPARATIVE TEST METHODS</text>
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<pageno>31</pageno>
<text>D1 REFERENCE METHOD</text>
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<bookmark index='65'>
<pageno>31</pageno>
<text>D2 ROOT MEAN SQUARE DEVIATION (RMSD)</text>
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<pageno>31</pageno>
<text>D2.1 General</text>
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<bookmark index='67'>
<pageno>31</pageno>
<text>D2.2 Procedure</text>
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</bookmark>
<bookmark index='68'>
<pageno>31</pageno>
<text>D3 THREE-WAY COMPARATIVE TEST</text>
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<pageno>31</pageno>
<text>D3.1 General</text>
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<bookmark index='70'>
<pageno>32</pageno>
<text>D3.2 Procedure</text>
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</bookmark>
<bookmark index='71'>
<pageno>33</pageno>
<text>D4 THE GRUBBS ESTIMATOR</text>
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</bookmark>
<bookmark index='72'>
<pageno>36</pageno>
<text>APPENDIX E - STATISTICAL ASSESSMENT PROCEDURES</text>
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<pageno>36</pageno>
<text>E1 MEAN</text>
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<bookmark index='74'>
<pageno>36</pageno>
<text>E2 STANDARD DEVIATION</text>
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<bookmark index='75'>
<pageno>36</pageno>
<text>E3 VARIANCE</text>
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<bookmark index='76'>
<pageno>36</pageno>
<text>E4 PRECISION</text>
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<bookmark index='77'>
<pageno>37</pageno>
<text>E5 VARIANCE RATIO (F-TEST)</text>
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<bookmark index='78'>
<pageno>37</pageno>
<text>E6 t TESTS</text>
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<bookmark index='79'>
<pageno>37</pageno>
<text>E7 SCATTER DIAGRAM</text>
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<bookmark index='80'>
<pageno>37</pageno>
<text>E8 OUTLIER CRITERION</text>
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<bookmark index='81'>
<pageno>40</pageno>
<text>E9 LINEAR REGRESSION ANALYSIS</text>
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<bookmark index='82'>
<pageno>40</pageno>
<text>E10 SIGNIFICANCE OF REGRESSION</text>
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<bookmark index='83'>
<pageno>41</pageno>
<text>E11 BIAS OF SCALE</text>
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<bookmark index='84'>
<pageno>41</pageno>
<text>E12 ASSESSMENT OF TOTAL BIAS</text>
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<bookmark index='85'>
<pageno>41</pageno>
<text>E13 STANDARD DEVIATION OF THE DIFFERENCES</text>
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<bookmark index='86'>
<pageno>42</pageno>
<text>E14 STANDARD DEVIATION BY GRUBBS ESTIMATOR</text>
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</bookmark>
<bookmark index='87'>
<pageno>43</pageno>
<text>APPENDIX F - SAMPLING TERMS - ILLUSTRATIVE</text>
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</toc>
Abstract
Sets out the recommended practices for the evaluation of on-line coal analysers. It defines various categories of analysers and describes their operation. It also describes appropriate techniques of statistical assessment and makes specific recommendations concerning the procedures for evaluation and calibration maintenance of on-line analysers.
RECONFIRMATION NOTICE
Technical Committee MN-001 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 15 July 2013.
The following are represented on Technical Committee MN-001:
Australasian Institute of Mining and Metallurgy
Australian Coal Association
Australian Coal Industry Reference Samples
Australian Coal Preparation Society
Bureau of Steel Manufacturers of Australia
Coalfield Geology Council of NSW
CSIRO Energy Technology
National Association of Testing Authorities Australia
National Generators Forum
The University of New South Wales
The University of Queensland
University of Newcastle
To view or download a copy of the reconfirmation notice please go to the reconfirmation link near the top of this page.
Scope
This Guide sets out recommended practices for the evaluation of on-line coal analysers.
It defines various categories of analyser and describes their operation. It also describes appropriate techniques of statistical assessment and makes specific recommendations concerning the procedures for evaluation and calibration maintenance of on-line analysers. This Guide will-(a) clarify terminology; (b) present an overview of different kinds of analysers commercially available; (c) provide general observations regarding interpretation of measurements by on-line analysers; and (d) present to prospective users options available to evaluate performance of on-line analysers.
NOTE: A bibliography of reference texts appropriate to the various sections of this Guide is given in Appendix A.
General Product Information
| Document Type | Standard |
| Status | Current |
| Publisher | Standards Australia |
| ProductNote | Reconfirmed 06-08-2013 |
| Committee | MN-001 |
| Supersedes |
|