GB/T 27991-2011Fundamental technical requirements for sediment measurement and particle size analysis instrument in open channel (English PDF)
河流泥沙测验及颗粒分析仪器基本技术条件
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 30, 2011
Implementation date
June 1, 2012
Scope
GB/T 27991-2011 is the English-translated version of 河流泥沙测验及颗粒分析仪器基本技术条件.
GB/T 27991-2011 is the Chinese standard "Fundamental technical requirements for sediment measurement and particle size analysis instrument in open channel".
Its scope clause reads: This standard specifies the test sediment and particle analysis instruments (hereinafter referred to as the instrument) terms and definitions, classifications, technical requirements, test Methods, inspection rules and signs, packaging, transportation, storage and other requirements.
This standard applies to tests and sediment particles rivers, lakes, reservoirs, channels, and analysis instruments. Its clauses include terms and definitions; requirements.
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Document preview — GB/T 27991-2011
National Standard of the People's Republic of China
- ICS
- 07.060
- Classification
- N 93
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Requirements
1 Scope
This standard specifies the test sediment and particle analysis instruments (hereinafter referred to as the instrument) terms and definitions, classifications, technical requirements, test
Methods, inspection rules and signs, packaging, transportation, storage and other requirements.
This standard applies to tests and sediment particles rivers, lakes, reservoirs, channels, and analysis instruments.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Basic dimensions GB/T 6005 Test sieves - Metal wire cloth, perforated plate and electroformed sheet mesh
GB/T 9359-2001 hydrological instruments environmental testing conditions and methods
GB/T 18185-2000 hydrological instruments reliability technical requirements
GB/T 18522.6 hydrologic instruments - Part 6. inspection rules and signs, packaging, transportation, storage and operation manual
GB/T 19677 Terms and symbols for hydrological Instruments
GB/T 50095 standard hydrological basic terminology and symbols
SL07-20006 suspended sediment sampler
3 Terms and Definitions
Terms and definitions GB/T 19677 and GB/T 50095 apply to this document defined.
4 Requirements
4.1 Technical Data
4.1.1 Sediment sampling
4.1.1.1 suspended sediment sampler
Suspended sediment sampler technical parameters required to execute SL07-2006 in Chapter 5.
4.1.1.2 load sediment sampler
According to the structure principle is different, load sediment sampling can generally be divided into pressure sampler and frame (network type) sampler. As applicable to push
Sediment particle size is different, can be divided into sandy and pebble bed load sampler categories. Differential pressure sampler suitable for sampling sand bed. box
Type (network type) sampler suitable for gravel bedload samples. Load sediment sampling main technical parameters in Table 1.
END: Draft Version (GB/T 27991-2011)
GB/T 27992.3-2016 | GB/T 27994-2011 | GB/T 27992.1-2011 |
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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