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GB/T 41184.1-2021Measuring instruments for soil moisture evaporation—Part 1:Evaporator of the hydraulic type (English PDF)

土壤水分蒸发测量仪器第1部分：水力式蒸发器

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2021

Implementation date

July 1, 2022

Scope

GB/T 41184.1-2021 is the English-translated version of 土壤水分蒸发测量仪器第1部分：水力式蒸发器.

GB/T 41184.1-2021 is the Chinese national specification for hydraulic evaporators, the instruments that measure soil moisture evaporation by floating an undisturbed soil column on a buoyant system in a water tank.

It describes the product structure, with its water tank, evaporation, collecting and measuring systems, and sets reliability requirements. The technical requirements cover appearance, working environment conditions, basic parameters, repeatability, materials, antifreeze and mechanical environment adaptability.

It then gives the test requirements, test conditions and test methods, the factory and type inspection rules, marking and the instruction manual, and packaging, transport and storage.

It applies to the development, production, testing and use of hydraulic evaporators and is Part 1 of GB/T 41184. It was issued on 31 December 2021 and has applied since 1 July 2022.

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Document preview — GB/T 41184.1-2021

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

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Product structure and reliability
4.1 Product Structure
4.2 Reliability
5 Technical requirements
5.1 Appearance
5.2 Working Environment Conditions
5.3 Basic parameters
5.4 Repeatability
5.5 Materials
5.6 Antifreeze
5.7 Mechanical environment adaptability
6 Test method
6.1 Test requirements
6.2 Test conditions
6.3 Contents of the test method
7 Inspection Rules
7.1 Factory inspection
7.2 Type inspection
8 Logos and Instructions for Use
8.1 Flag
8.2 Instruction Manual
9 Packaging, transport and storage
9.1 Packaging
9.2 Transport
9.3 Storage

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1. Structure and Drafting Rules of Standardization Documents" drafted.

This document is the first part of GB/T 41184 "Soil Moisture Evaporation Measuring Instrument". GB/T 41184 has published the following parts.

--- Part 1. Hydraulic evaporator.

Introduction

Soil moisture evaporation measuring instruments, there are currently hydraulic soil evaporators and weighing soil evaporators in China. hydraulic evaporator Based on the principle of influent buoyancy weighing, the undisturbed soil column to be measured is filled in the evaporator, and then placed on the floating boat floating in the pool.

It forms a floating system. When the water column moisture increases or decreases, the weight changes, and the depth of the evaporator sinking in the pool also changes vertically. change. The weighing type soil evaporator is determined by weighing a certain volume of soil in its natural state and changing its weight within a certain time interval.

An instrument for measuring soil evaporation. GB/T 41184 "Soil Moisture Evaporation Measuring Instrument" is proposed to consist of two parts.

--- Part 1. Hydraulic evaporators;

--- Part 2. Weighing evaporators.

Soil water evaporation measurement is to study the whole process of soil water and gas cycle and plant emission, and to study the atmosphere-water-plant-soil (SPAC)

Comprehensive system, to explore the law of land surface water balance, for water resources calculation, flood control, production and confluence, hydrological forecast, large-scale project water resources demonstration, river channel Provide technical support for flood control impact assessment and flood control and drought relief of construction projects within the scope, so as to solve surface water problems through evaporation in areas without data Provide scientific basis for water resource calculation problem.

1 Scope

This document specifies the requirements, test methods, inspection rules, signs and instructions for use of hydraulic evaporators in soil moisture evaporation measuring instruments Instructions, packaging, transportation, storage, etc.

This document applies to the development, production, testing and use of hydraulic evaporators.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 9359 Basic environmental test conditions and methods for hydrological instruments

GB/T 9969 General Principles of Instruction Manual for Industrial Products

GB/T 13384 General technical conditions for packaging of mechanical and electrical products

GB/T 15966-2017 Basic parameters and general technical conditions of hydrological instruments

GB/T 18185 Technical Requirements for Reliability of Hydrological Instruments

GB/T 19677 Hydrological Instrument Terms and Symbols

GB/T 20878 Stainless steel and heat-resistant steel grades and chemical composition

GB/T 50095 Standard for basic hydrological terms and symbols

3 Terms and Definitions

Terms and definitions defined in GB/T 19677 and GB/T 50095 apply to this document.

4 Product structure and reliability

4.1 Product Structure

The hydraulic evaporator consists of a water tank system (large water tank, top plug, small water tank, etc.), an evaporation system (floating ring, evaporation outer barrel, evaporation inner barrel, size flat Weighing weights, rain dividers, etc.), collecting systems (pumping conduits, overflow conduits, collecting buckets, collecting outer buckets, seepage buckets, etc.) and measuring systems (micrometers, gauges, etc.)

It is composed of four major parts, such as counter, float, balance weight, etc. The schematic diagram of its structure is shown in Figure 1.

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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.

Referenced standards

Normative references

Similar standards

GB/T 20481-2026|GB/T 20486-2026|GB/T 22482-2026|GB/T 28593-2026|GB/T 33670-2026|GB/T 33675-2026

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