04/30122896 DC : DRAFT SEP 2004
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
10-31-2008
11-23-2012
FORWARD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and units
5 General principles
6 Gas measurement
6.1 General
6.2 Volume measurement
6.3 Calorific value measurement
6.3.1 Measurement techniques and sampling
6.3.2 Direct measurement (calorimetry)
6.3.3 Inferential measurement
6.3.4 Correlation techniques
6.4 Volume conversion
6.4.1 General
6.4.2 Density
6.4.3 Pressure and temperature
6.4.4 Compression factor
6.5 Calibration
6.6 Data storage and transmission
7 Energy determination
7.1 Interfaces
7.2 Methods of energy determination
7.2.1 Direct determination pf energy
7.2.2 Indirect determination of energy
8 Strategy and Procedures
8.2 Strategies for energy determination
8.2.1 Strategies for the single interfaces
8.3 Plausibility checks
9 Assignment methods
9.1 Fixed assignment
9.1.1 Fixed assignment of a measured calorific value
9.1.2 Fixed assignment of declared calorific value
9.2 Variable assignment
9.2.1 Input at two or more different stations with
zero floating point
9.2.2 Input at two or more different stations with
commingled gas flows
9.3 Determination of the representative calorific value
9.3.1 Arithmetic average calorific value
9.3.2 Quantity weighted average calorific value
9.3.3 Quality tracking
10 Calculation of energy quantities
10.1 General calculation equations for energy
10.2 Calculation of averaged value
10.2.1 Arithmetic average of the calorific value
10.2.2 Weighted average of the calorific value
10.3 Volume conversion and volume to mass conversion
10.4 Energy determination on the basis of declared
calorific value
11 Accuracy on calculated energy
11.1 Accuracy
11.2 Calculation of uncertainty
11.3 Bias
12 Quality control and quality assurance
12.1 General
12.2 Check of the course of the measuring data
12.3 Traceability
12.4 Substitute values
Annex A (informative) Mainly used instruments for and energy
determination techniques
Annex B (informative) Different possible courses of the
calorific value
Annex C (informative) Volume conversion and volume to mass
conversion
Annex D (informative) Incremental energy determination
Annex E (informative) Practical example for volume conversion
and energy quantity calculation
Annex F (informative) Practical example for averaging the
calorific value due to different delivery
situations
Annex G (informative) Ways to Determining Substitute Values
Annex H (informative) Plausibility check graphical example
Annex I (Informative) Uncorrected data, bias correction and final
result graphical example
Annex J (informative) Single reservoir calorific value determination
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