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GB/T 3409.1-2008: Instrument for dam monitoring -- Rebar strain meter -- Part 1: Unbonded elastic wire resistance rebar strain meter
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 3409.1-2008	English	329	Add to Cart	3 days [Need to translate]	Instrument for dam monitoring -- Rebar strain meter -- Part 1: Unbonded elastic wire resistance rebar strain meter
GB/T 3409-1994	English	399	Add to Cart	3 days [Need to translate]	Unbonded elastic wire resistance type reinforced concrete meter
GB 3409-1982	English	319	Add to Cart	3 days [Need to translate]	Unbonded elastic wire resistance type reinforced concrete meter

GB/T 3409.1-2008: Instrument for dam monitoring -- Rebar strain meter -- Part 1: Unbonded elastic wire resistance rebar strain meter

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Instrument for dam monitoring Rebar strain meter Part 1. Unbonded elastic wire resistance rebar strain meter ICS 07.060 P10 National Standards of People's Republic of China Replacing GB/T 3409-1994 Dam monitoring instrument gauge steel Part 1. Differential reinforced resistance meter Posted 2008-04-09 2008-07-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 3409 "dam monitoring instrument gauge steel" is divided into three parts. --- Part 1. Differential reinforced resistance meter; --- Part 2. Vibrating wire reinforcement meter; --- Part 3. Resistance reinforced meter. This section GB/T 3409 Part 1, instead of the GB/T 3409-1994 "reinforced differential resistance meter." This part is GB/T 3409-1994 "differential reinforcement resistance meter" amendments to this part of the GB/T 3409-1994 compared to the main To change the following. --- 4.3 in Table 1, increasing the diameter of the large cross section steel meter specifications; --- In Chapter 5, modify the "over range limit", "stability requirements" and so on; --- In 6.10.5,7.11, increasing the mechanical environmental adaptability indicators and test methods; --- Modify and supplement the "logo", "Manual", "Packaging", "transport" and "storage" and other related content. This section of Appendix A normative appendix. This part of the People's Republic of China Ministry of Water Resources and focal points. This part mainly drafted by. MWR hydrological instruments and geotechnical engineering Instrument Quality Supervision and Testing Center, the National Electric Power Nanjing Auto Of Equipment Plant, State grid Nanjing Automation Research Institute, Ministry of Water Resources Hydrology Nanjing Hydraulic Research Institute of Automation. Participated in the drafting of this section. the country's industrial production permit office hydrological instruments and geotechnical engineering Instrument Examination Department. The main drafters of this section. Zhang Dekang, Zhao Yue, Lu Youqing, a new chapter, Shi Minghua. The drafters of some of the participants. Miss Xu. This standard replaces the standards previously issued as follows. --- GB 3409-1982, GB/T 3409-1994. Dam monitoring instrument gauge steel Part 1. Differential reinforced resistance meter

1 Scope

This section GB/T 3409 specifies the structure and composition of the differential resistance of reinforced meter, specifications and main parameters, technical requirements, test side Method, inspection rules and signs, instructions, packaging, transportation and storage. This section applies to internal monitoring embedded in the concrete building structure in steel reinforced stress differential resistance meter.

2 Normative references

The following documents contain provisions which, through reference to GB/T 3409 to the present, constitute provisions of this section. For dated references, All subsequent amendments (excluding corrections) or revisions do not apply to this section, however, encourage an agreement under this section Parties to study the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 191 Packaging - Pictorial signs GB/T 5080.7-1986 Equipment reliability testing efficiency constant failure rate assumption under the MTBF of the verification test Inspection program GB/T 6388 transceiver flag Transport Package GB 9969.1 Instructions General Industrial Products GB/T 15406-2007 geotechnical engineering instrument basic parameters and general technical conditions GB/T 15464 instrumentation packaging technology 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 GB/T 3409 this part. 3.1 Steel stress measurement sensor. 3.2 In a pair of differential changes in the wire as the sensing element measuring steel reinforced stress meter (hereinafter referred to as reinforcement meter). 3.3 Sensitive elements of the two differential change in wire resistance values \u200b\u200bR1 and R2 ratio. Z = R1R2 3.4 Reinforced meter resistance ratio measured value when compared with the amount of change in resistance corresponding to the input is zero. 3.5 Reinforced meter calibration curve resistance and temperature above 0 ℃ portion between. With independent linearity method of fitting a straight line in the resistance value Axis intercept ohms (Ω). ...