GB/T 21440.3-2008Instrument for dam monitoring - Settlement gauge - Part 3: Hydraulic pressure type settlement gauge (English PDF)
大坝监测仪器 沉降仪 第3部分：液压式沉降仪
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 17, 2008
Implementation date
October 1, 2008
Scope
GB/T 21440.3-2008 is the English-translated version of 大坝监测仪器 沉降仪 第3部分：液压式沉降仪.
GB/T 21440.3-2008 is the Chinese standard "Instrument for dam monitoring - Settlement gauge - Part 3: Hydraulic pressure type settlement gauge".
Its scope clause reads: This section GB/T 21440 specifies the hydraulic settlement gauge of terms and definitions, technical requirements, test methods, inspection rules, and standard Chi, packaging, transportation, storage and so on.
This section applies to fill embankment dam and other projects to monitor the use of embedded hydraulic settlement gauge. Its clauses include terms and definitions; product composition; technical requirements.
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Document preview — GB/T 21440.3-2008
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 composition
- 5 Technical requirements
1 Scope
This section GB/T 21440 specifies the hydraulic settlement gauge of terms and definitions, technical requirements, test methods, inspection rules, and standard
Chi, packaging, transportation, storage and so on.
This section applies to fill embankment dam and other projects to monitor the use of embedded hydraulic settlement gauge.
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 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
Calculate the measuring point Settlement Settlement instrument through the liquid pressure within the pressure measured by the sensor probe changes.
4 Product composition
Hydraulic settlement gauge consists of probes, pressure sensors, tubing (including liquid-filled tube, snorkel and protective tube), a liquid container (including rehydration
Part of the device), cables, measuring device (meter readings) and the like.
5 Technical requirements
5.1 Operating Environment
Temperature. -20 °C ~ + 60 °C.
5.2 Appearance
The surface appearance of the instrument should be no cracks, scratches obvious defects, rust, chipping, uniform surface paint, all parts should be firmly connected, fasteners should
No loose, defect, filling tube, snorkel and protecting tube should not have a hard and broken off.
5.3 Materials and dimensions
5.3.1
probe cavity and filling pipe shall be filled with airless liquid may be distilled water, antifreeze.
5.3.2
pipeline should be made of sturdy, radial deformation is small, a small amount of absorbent material.
5.3.3
filling pipe and exhaust tube diameter should be 4mm or 6mm, the outer diameter should be 6mm or 8mm.
5.3.4
liquid container can be filled, the liquid should remain in the same position.
5.4 Performance
5.4.1 Measuring range
0m ~ 1.0m, 0m ~ 1.5m, 0m ~ 2.0m, 0m ~ 3.0m, 0m ~ 4.0m.
......
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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