Table of Contents

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Performance characteristics of automatic weighing
  method in accordance with ISO 6570:2001
  5.1 Working principle
  5.2 Functional requirements
  5.3 Measurement uncertainty
6 Performance requirements for a chilled-mirror-type
  instrument for hydrocarbon-dew-point determination
  6.1 Working principle
  6.2 Precision
7 Requirements/Points of interest to carry out a calibration
  7.1 Process gas
  7.2 Sampling system
  7.3 Selection of the PHLC reference value
  7.4 Compositional range of gases covered by the calibration
      procedure
  7.5 Calibration interval
8 Execution of calibration procedure
  8.1 General
  8.2 Method A - Change in trip point value
  8.3 Method B - Direct change of dew point value
  8.4 Which method should be used?
Annex A (informative) - Condensation behaviour of natural
        gas
Annex B (informative) - Example of a hydrocarbon-dew-point
        analysis
Annex C (informative) - Examples of a calibration
Annex D (informative) - Performance of different types of
        chilled-mirror instruments for hydrocarbon dew
        point determination
Bibliography

Abstract

Specifies the principles of, and general requirements for, the traceable calibration of automatic hydrocarbon-dew-point chilled-mirror instruments using the indirect automatic weighing method (method B) described in ISO 6570:2001 to determine the potential hydrocarbon liquid content of natural gas, or similar gas.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
Pages
ISBN
Committee	TC 193