GB/T 21699-2008
ActiveVerification/Calibration method of rotating-element current meters in straight open tank
直线明槽中的转子式流速仪检定/校准方法
Application Summary AI generated
This standard specifies the verification and calibration procedures for rotating-element current meters (such as cup or propeller types) when tested in a straight open tank. It is applied in hydrometric laboratories and field operations to ensure the accuracy of flow velocity measurements in open channels, rivers, and irrigation systems. The method establishes traceable calibration curves for instruments used in water resource monitoring, environmental flow assessment, and hydraulic engineering.
Related Standards
GB/T 27991-2011
Fundamental technical requirements for sediment measurement and particle size analysis instrument in open channel
GB/T 27993-2011
General technical conditions for stage measuring instruments
GB/T 27992.1-2011
Water depth finding equipment--Part 1: Hydrologic sounding rod
GB/T 27994-2011
General technical conditions for equipments of automatic system for hydrological data acquisition and transmission
GB/T 19565-2004
Pyranometer
GB/T 19571-2004
Technical specification for the management of marine protected areas
GB/T 19705-2005
General specification of signals and interfaces for hydrologic instruments
GB/T 19704-2005
Display and record for hydrological instrument
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.