ENVIRONMENTAL TESTING - PART 3-11: SUPPORTING DOCUMENTATION AND GUIDANCE - CALCULATION OF UNCERTAINTY OF CONDITIONS IN CLIMATIC TEST CHAMBERS

Available format(s)

Hardcopy

Language(s)

German

Published date

03-01-2008

Publisher

Verband Deutscher Elektrotechniker

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Concept of uncertainty
   4.1 Uncertainty, error and 'true value'
   4.2 Statements of uncertainty
   4.3 Combining uncertainties
5 Tolerance
6 Humidity and temperature measurement
7 Methods for determining climatic test chamber uncertainties
   7.1 Empty chamber
   7.2 Typical load
   7.3 Measurement of conditions in the chamber during the test
   7.4 Conditions to measure
   7.5 Measurements required
   7.6 Sources of uncertainty
   7.7 Essential contributions of uncertainty
8 Estimation of uncertainty components and their combination
9 Overall uncertainty of temperature measurement
   9.1 General
   9.2 Further considerations
10 Overall uncertainty of relative humidity measurement
   10.1 Uncertainty of temperature measurement at each sensor point
   10.2 Uncertainty of the relative humidity measurement
11 Anomalous data and presentation of results
   11.1 Average case analysis
   11.2 Worst case analysis
Annex A (informative) Measurement data sets - Loaded chamber
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography

Shows how to estimate the uncertainty of steady-state temperature and humidity conditions in temperature and humidity chambers. Since this is inextricably linked to the methods of measurement, these are also described.

DocumentType	Standard
Pages	0
PublisherName	Verband Deutscher Elektrotechniker
Status	Current

Standards	Relationship
VDE 0468-3-11 : 2008	Corresponds
BS EN 60068-3-11:2007	Identical
I.S. EN 60068-3-11:2007	Identical
NF EN 60068-3-11 : 2007	Identical
EN 60068-3-11:2007	Identical
NBN EN 60068-3-11 : 2007	Identical
IEC 60068-3-11:2007	Identical