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GB/T 33705-2017 English PDF

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GB/T 33705-2017: Soil moisture observation -- Frequency domain reflection method
Status: Valid
Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 33705-2017199 Add to Cart 3 days Soil moisture observation -- Frequency domain reflection method Valid

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Basic data

Standard ID: GB/T 33705-2017 (GB/T33705-2017)
Description (Translated English): Soil moisture observation -- Frequency domain reflection method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A47
Classification of International Standard: 07.060
Word Count Estimation: 10,163
Date of Issue: 2017-05-12
Date of Implementation: 2017-12-01
Quoted Standard: GB/T 18185; QX 4-2015; SL 364-2006
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the use of frequency domain reflection method to observe the soil moisture observation items, site requirements, instrument requirements, observation steps. This standard is applicable to the construction, operation and maintenance of soil moisture automatic observation station in frequency domain reflection.

GB/T 33705-2017: Soil moisture observation -- Frequency domain reflection method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Soil moisture observation.Frequency domain reflection method ICS 07.060 A47 National Standards of People's Republic of China Soil moisture observation frequency domain reflection method 2017-05-12 released 2017-12-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface I 1 Scope 1 2 normative reference document 1 3 Terms and definitions 1 4 Principles of observation and project 2 5 Location Requirements 2 6 Instrument Requirements 2 7 Observation Step 3 Appendix A (Normative Appendix) Instrument Performance 5 Appendix B (Normative Appendix) Calculation formula for relevant factors of soil moisture content 6 Reference 7

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the China Meteorological Administration. This standard is nationalized by the National Standardization Technical Committee for Meteorological Instruments and Observation Methods (SAC/TC507). The drafting of this standard. China Meteorological Bureau Meteorological Detection Center, the National Meteorological Center, Henan Meteorological Bureau, Shanghai Long Hope Meteorological Technology Limited Company, China Huayun Technology Development Company, Henan Zhongyuan Optoelectronics Measurement & Control Technology Co., Ltd. The main drafters of this standard. Wu Dongli, Zhang Xuefen, Cao Tingting, Wang Bolin, Li Cuina, Xue Hongxi, Ye Linmao, Xu Dianyi, Huijian, Wang Yanbin. Soil moisture observation frequency domain reflection method

1 Scope

This standard specifies the use of frequency domain reflection method to observe the soil moisture observation items, site requirements, instrument requirements, observation steps. This standard is applicable to the construction, operation and maintenance of soil moisture automatic observation station in frequency domain reflection.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. Technical requirements for reliability of hydrological instruments GB/T 18185 Technical specification for lightning protection of QX4-2015 weather station (station) Code for monitoring soil moisture content

3 terms and definitions

The following terms and definitions apply to this document. 3.1 Frequency domain reflector method According to the principle of the difference between the dielectric constant of water and other dielectrics in the soil and the frequency domain reflection test technique, The amount of the method. [GB/T 28418-2012, definition 3.2] 3.2 Soil moisture Field Soil Water Content and Corresponding Crop Water Status. [SL364-2006, definition 2.0.1] 3.3 Soil volume moisture content soilmoisturecontentbyvolume The ratio of the volume of water in the soil to its total volume is usually expressed as a percentage. [SL364-2006, definition 2.0.7] 3.4 Soil moisture content gravitymoustureofsoil The ratio of the weight of water to dry weight in the soil is usually expressed as a percentage. [SL364-2006, definition 2.0.6] 3.5 Soil relative humidity relativemoistureofsoil The ratio of weight water content to field water holding capacity is usually expressed as a percentage. [SL364-2006, definition 2.0.9]
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