ISO/TS 20460:2015
Paper and board — Automated on-line testing — Metrological comparability between standardized measurements and output of on-line gauges
ISO/TS 20460:2015 establishes guidelines to link and, where applicable, calibrate the online gauge, following laboratory measurement for a given paper and board property.
Paper and board online measuring equipment is mostly based on different technology to that of laboratory equipment. Therefore, this Technical Specification specifies the International Standards to be chosen for the determination of physical properties of paper and board when measured online. It is applicable to all kind of paper and board.
In case of dispute, the usual reference is the laboratory testing but the parties may decide that the online measurements are valid based on the application of this International Standard.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Methodology requirements
4.1 Requirements for the measuring equipment and its measurement process
4.1.1 General requirements for measuring systems
4.1.2 Consistency of the online equipment itself
4.1.3 Consistency of the online measurement process
4.2 Requirements for comparison of online and off-line equipment
4.2.1 Calibration procedure principles
4.2.2 Calibration procedure requirements
5 Methods to evaluate comparability
5.1 Sampling operations, conditioning and stability
5.2 Basis weight
5.3 Thickness
5.4 Moisture content
5.5 Brightness, colour, whiteness, k and s
5.6 Ash content
5.7 Gloss
Annex A (informative) Typical tolerances
Annex B (informative) Examples of graphical evaluations
Annex C (informative) Online gauges principles, limitations to correlations, sources of errors
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Methodology requirements
4.1 Requirements for the measuring equipment and its measurement process
4.1.1 General requirements for measuring systems
4.1.2 Consistency of the online equipment itself
4.1.3 Consistency of the online measurement process
4.2 Requirements for comparison of online and off-line equipment
4.2.1 Calibration procedure principles
4.2.2 Calibration procedure requirements
5 Methods to evaluate comparability
5.1 Sampling operations, conditioning and stability
5.2 Basis weight
5.3 Thickness
5.4 Moisture content
5.5 Brightness, colour, whiteness, k and s
5.6 Ash content
5.7 Gloss
Annex A (informative) Typical tolerances
Annex B (informative) Examples of graphical evaluations
Annex C (informative) Online gauges principles, limitations to correlations, sources of errors
Bibliography