GB/T 25922-2010 Replaced National standards

GB/T 25922-2010 Measurement of fluid flow in closed conduits—Flowrate measurement by means of vortex shedding flowmeters inserted in circular cross-section conduits running full

Publish Date: 2011-01-14 Implement Date: 2011-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 25922-2010

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: Flow and level measurement instruments

ICS Name: The measurement of flow rate in a closed pipeline

Publish Date: 2011-01-14

Implement Date: 2011-05-01

Pages: 16 pages

Scope

This standard provides general information on vortex flowmeters, including terminology and a series of formulas for determining performance. It describes the typical structure of vortex flowmeters and specifies requirements for inspection, certification, and equipment traceability. The standard also provides users with technical information related to the selection and application of vortex flowmeters, as well as calibration guidelines. It explains relevant terminology and describes test procedures, technical specifications, application instructions, and formulas for determining performance characteristics.
This standard describes how to use vortex frequency to measure fluid flow rate; how to measure volumetric flow, mass flow, and standard state volumetric flow; and how to measure cumulative flow within a specified time period.
This standard is only applicable to full-pipe flowmeters (non-insertion type) and only applies to stable or slowly changing single-phase fluid flow in a closed full-pipe system.