GB/T 21391-2008 Replaced National standards

GB/T 21391-2008 Measurement of natural gas flow by turbine meters

Publish Date: 2008-02-02 Implement Date: 2008-08-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 21391-2008

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: Oil and gas gathering and transportation equipment

ICS Name: Volume equipment and volume measurement

Publish Date: 2008-02-02

Implement Date: 2008-08-01

Pages: 29 pages

Scope

This standard specifies the measurement conditions, requirements, performance, installation, real-flow calibration, and on-site inspection for gas turbine flowmeters (hereinafter referred to as flowmeters) used for natural gas flow measurement. The natural gas components measured by the flowmeters shall be within the ranges specified in GB 17820-1999, GB/T 17747.1-1999, GB/T 17747.2-1999, and GB/T 17747.3-1999. The actual relative density of natural gas shall be 0.55 to 0.80. This standard stipulates that the standard reference conditions for natural gas volume measurement and the combustion standard reference conditions for heat value measurement are both absolute pressure pn equal to 0.101 325 MPa and thermodynamic temperature Tn equal to 293.15 K. Contract pressure and contract temperature may also be used as reference conditions.

Development Information

Word Count: 54 Thousand words Pages: 29 pages

Superseded by the following standards

GB/T 21391-2022 Measurement of natural gas flow by turbine gas meters

Referenced Standards

GB 3836.1-2000 Electrical apparatus for explosive gas atmospheres—Part 1:General requirements GB 3836.2-2000 Electrical apparatus for explosive gas atmospheres—Part 2:Flameproof enclosure “d” GB 3836.4-2000 Electrical apparatus for explosive gas atmospheres—Part 4:Intrinsic safety“i” GB/T 11062-1998 Natural gas—Calculation of calorific values, density, relative density and Wobbe index from composition GB/T 13610-2003 Analysis of natural gas by gas Chromatography GB/T 17747.1-1999 Natural gas—Calculation of compression factor—Part 1:Introduction and guidelines GB/T 17747.2-1999 Natural gas—Calculation of compression factor—Part 2:Calculation using molar-composition analysis GB/T 17747.3-1999 Natural gas—Calculation of compression factor—Part 3:Calculation using physical properties GB 17820-1999 Natural gas GB/T 18603-2001 Technical requirements of measuring systems for natural gas GB/T 18940-2003 Measurement of gas flow in closed conduits—Turbine meters GB 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 4208-2008 Degrees of protection provided by enclosure(IP code) GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB/T 15464-1995 General-purpose specification for the packaging of instrumentation products JJG 198-1994 Velocity Flowmeter SY/T 6143-2004 Measuring natural gas flow with a standard orifice plate flow meter

Adopt standards

EN 12261:2002

Related Standards

GB/T 13235.3-1995 Active

GB/T 13235.3-1995 Petroleum and liquid petroleum products—Volumetric calibration of vertical cylindrical metal tanks—Electro-optical distance-ranging internal method

Publish Date: 1995-12-21

GB/T 6968-1997 Replaced

GB/T 6968-1997 Diaphragm gas meters

Publish Date: 1997-07-29

GB/T 17286.1-1998 Replaced

GB/T 17286.1-1998 Liquid hydrocarbons—Dynamic measurement—Proving systems for volumetric meters—Part 1:General principles

Publish Date: 1998-04-02

GB/T 17286.2-1998 Replaced

GB/T 17286.2-1998 Liquid hydrocarbons—Dynamic measurement—Proving systems for volumetric meters—Part 2:Pipe provers

Publish Date: 1998-04-02

GB/T 17286.3-1998 Replaced

GB/T 17286.3-1998 Liquid hydrocarbons—Dynamic measurement—proving systems for volumetric meters—Part 3:Pulse interpolation techniques

Publish Date: 1998-04-02

GB/T 17287-1998 Active

GB/T 17287-1998 Liquid hydrocarbons—Dynamic measurement—Statistical control of volumetric metering systems

Publish Date: 1998-04-02