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BSI 23/30473440 DC 2023

BSI 23/30473440 DC 2023

$13.70

BS EN IEC 60068-3-11. Environmental testing – Part 3-11. Supporting documentation and guidance. Calculation of uncertainty of conditions in climatic test chambers

Published By Publication Date Number of Pages
BSI 2023 33
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PDF Catalog

PDF Pages PDF Title
4 CONTENTS
6 FOREWORD
9 1.1 1 Scope
1.2 2 Normative References
1.3 3 Terms and Definitions
1.4 4 Background
1.4.1 4.1 General
10 1.4.2 4.2 Variations of Temperature and Humidity Within a Chamber
1.4.3 4.3 Working Space
11 1.5 5 Methods of Characterising the Performance of Climatic Chambers
12 1.6 6 Chamber Performance Parameters
1.6.1 6.1 Temperature Parameters
1.6.2 6.2 Humidity Parameters
13 1.7 7 Temperature and Humidity Measurement Systems
1.7.1 7.1 General
1.7.2 7.2 Temperature Measurement System
14 1.7.3 7.3 Humidity Measurement System
15 1.7.4 7.4 Combining Temperature and Humidity Measurements
1.8 8 Utilising a Test Load or Specimen
16 1.9 9 Derivation of Chamber Performance Parameters
1.9.1 9.1 General
1.9.2 9.2 Achieved Temperature and Achieved Humidity
1.9.3 9.3 Temperature Fluctuation and Relative Humidity Fluctuation
17 1.9.4 9.4 Temperature Gradient and Relative Humidity Gradient
18 1.9.5 9.5 Temperature Variation in Space and Relative Humidity Variation in Space
1.9.6 9.6 Temperature Rate of Change
19 1.10 10 Test Procedures
1.10.1 10.1 Test Procedure for Temperature Test Chambers
20 1.10.2 10.2 Test Procedure for Temperature and Humidity Test Chambers
21 1.10.3 10.3 Test Procedure to Measure Temperature Rate of Change
1.10.4 10.4 Test Conditions to Establish Uncertainties
22 1.10.5 10.5 Reporting of Measurement Procedure
1.11 11 Estimation of Uncertainty of Measurements
1.11.1 11.1 General
1.11.2 11.2 Concept of Uncertainty
23 1.11.3 11.3 Statements of Uncertainty
1.11.4 11.4 Best Estimate of the True Value of the Measured Quantity
1.11.5 11.5 Confidence Interval
1.11.6 11.6 Confidence Level
1.11.7 11.7 Combining Uncertainties
24 1.11.8 11.8 Tolerance
1.12 12 Sources of Uncertainty
1.12.1 12.1 Basic Sources of Uncertainty.
1.12.2 12.2 Contributions from Sources of Uncertainty
25 1.12.3 12.3 Estimation of Uncertainty Components and Their Combination
26 1.13 13 Example of Estimating Uncertainty for Temperature Measurements
28 1.14 14 Example of Estimating Uncertainty for Relative Humidity Measurements
32 1.15 15 Anomalous Data and Presentation of Results
1.15.1 15.1 General
1.15.2 15.2 Average case analysis
1.15.3 15.3 Worst case analysis
33 1.16 Bibliography

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BSI 23/30473440 DC 2023
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