GB/T 31253-2014
Natural gas.Validation for gaseous reference materials.Direct measurement of calorific value and density (English Version)

Standard No.

GB/T 31253-2014

Language

Chinese, Available in English version

Release Date

2014

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 31253-2014

Scope

This standard specifies the method for verifying gas reference materials for natural gas analysis by direct measurement of calorific value and density. This standard applies to the verification of gas standard substances prepared by weighing methods.

GB/T 31253-2014 Referenced Document

• GB/T 11062 Natural gas—Calculation of calorific values, density, relative density and Wobbe indices from composition*， 2020-09-29 Update
• GB/T 12206 Testing method to determine the calorific values of town gas
• GB/T 19205 Natural gas.Standard reference conditions
• JJF 1033-2008 Rule for the Examination of Measurement Standard
• JJF 1059.1 Evaluation and Expression of Uncertainty in Measurement

GB/T 31253-2014 history

• 2014 GB/T 31253-2014 Natural gas.Validation for gaseous reference materials.Direct measurement of calorific value and density