GB/T 21440.1-2008Instument for dam monitoring settlement gauge - Part 1: Hydraulic overflow settlement gauge (English PDF)
大坝监测仪器 沉降仪 第1部分：水管式沉降仪
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
February 15, 2008
Implementation date
May 1, 2008
Scope
GB/T 21440.1-2008 is the English-translated version of 大坝监测仪器 沉降仪 第1部分：水管式沉降仪.
GB/T 21440.1-2008 is the Chinese standard "Instument for dam monitoring settlement gauge - Part 1: Hydraulic overflow settlement gauge".
Its scope clause reads: This section GB/T 21440 specifies the type settlement gauge pipes terms and definitions, product classifications and composition, technical requirements, test methods, Inspection rules and signs, instructions, packaging, transportation, storage and so on.
This section applies for the vertical displacement measuring instrument earth dam water sedimentation and other geotechnical engineering safety monitoring. Its clauses include terms and definitions; product classification and composition; technical requirements.
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Document preview — GB/T 21440.1-2008
National Standard of the People's Republic of China
- ICS
- 07.060
- Classification
- P 10
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Product Classification and composition
- 5 Technical requirements
1 Scope
This section GB/T 21440 specifies the type settlement gauge pipes terms and definitions, product classifications and composition, technical requirements, test methods,
Inspection rules and signs, instructions, packaging, transportation, storage and so on.
This section applies for the vertical displacement measuring instrument earth dam water sedimentation and other geotechnical engineering safety monitoring.
2 Normative references
The following documents contain provisions which, through reference GB/T 21440 in this section constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
GB 9969.1 Instructions General Industrial Products
GB/T 17626.5 electromagnetic compatibility test and measurement technology surge (impact) immunity test
GB/T 17626.8 Electromagnetic compatibility Testing and measurement techniques - Power frequency magnetic field immunity test
GB/T 50279 Standard for fundamental terms of geotechnical engineering
3 Terms and Definitions
GB/T 50279 and established the following terms and definitions apply to this part of the GB/T 21440 of.
3.1
INSTALLATION earth dam and other geotechnical engineering building and its internal or external surface of the base, which is used to monitor changes in vertical displacement instrument.
3.2
Communication pipe principle with liquid overflow after connecting pipe ends to maintain the same level of vertical displacement measuring instrument of settlement (3.1).
4 Product Classification and composition
4.1 Categories
Water sedimentation instrument manual measurement points according to their work style and automatic measurement type.
4.2 Composition
Water sedimentation instrument mainly by subsidence probe, piping systems (including into the water, snorkel, drainage and protective tube), water supply systems (including
Tanks, pressure chambers), measurement system (including measuring tube, measuring tape, water dispenser) and other components; automatic measurement of water tube type settlement gauge package should
Including measurement sensors, solenoid valves and control unit and other components.
5 Technical requirements
5.1 Operating Environment
Temperature. -20 °C ~ 60 °C (Control Unit is -10 °C ~ 50 °C).
......
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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GB/T 21440.2-2008 — Instrument for dam monitoring - Settlement gauge - Part 2: Electromagnetism type settlement gauge
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