GB/T 21327-2019Evaporator of water surface (English PDF)
水面蒸发器
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 4, 2019
Implementation date
January 1, 2020
Scope
GB/T 21327-2019 is the English-translated version of 水面蒸发器.
GB/T 21327-2019 is the Chinese national standard for water surface evaporators, the instruments with which evaporation from a water surface is observed.
It specifies the product classification and structural composition, the requirements, the test methods, the inspection rules, the marks and the instruction manual, and the packaging, transport and storage.
The requirements cover appearance, working environment conditions, material properties, dimensions, the measuring device, antifreeze provisions, mechanical environment adaptability and reliability.
It defines the standard water surface evaporator as a frost-resistant, high-accuracy instrument of glass-fibre-reinforced plastic buried below ground with its mouth above ground level.
It applies to the design, manufacture, inspection, testing and use of such instruments, and it cites GB/T 9359, GB/T 18185, GB/T 19677, GB/T 50095, SL 180 and SL 630.
It replaces GB/T 21327-2007, was issued on 4 June 2019 and has applied since 1 January 2020.
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Document preview — GB/T 21327-2019
National Standard of the People's Republic of China
- ICS
- 07.060
- Classification
- N 93
- Replacing
- GB/T 21327-2007
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Product Classification and Structure Composition
- 4.1 Product Classification
- 4.2 Structure
- 5 Requirements
- 5.1 Appearance
- 5.2 Working environment conditions
- 5.3 Material properties
- 5.4 Size
- 5.5 Measuring device
- 5.6 Antifreeze
- 5.7 Mechanical environment adaptability
- 5.8 Reliability
- 5.9 Other
- 6 Test method
- 6.1 Test requirements
- 6.2 Main test equipment
- 6.3 Test method content
- 7 Inspection rules
- 7.1 Factory inspection
- 7.2 Type test
- 8 logo and instruction manual
- 8.1 Mark
- 8.2 Instruction Manual
- 9 Packaging, transport and storage
- 9.1 Packing
- 9.2 Transportation
- 9.3 Storage
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 21327-2007 "Water Surface Evaporator", compared with GB/T 21327-2007, the main technical changes are as follows:
---Modified product classification and structural composition;
---Modified the format of the "Technical Requirements";
--- Increased test requirements;
--- Added main test equipment;
--- Added display and record;
--- Added signal and interface;
--- Added telemetry terminal.
1 Scope
This standard specifies the product classification and structural composition, requirements, test methods, inspection rules, signs and instructions for use of surface evaporators. Packaging, transportation and storage.
This standard applies to the design, manufacture, inspection, testing and use of surface evaporation observation instruments.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 1449 fiber reinforced plastic bending performance test method
GB/T 3854 reinforced plastic Barcol hardness test method
GB/T 9359 basic environmental test conditions and methods for hydrological instruments
GB/T 9969 General guidelines for the use of industrial products
General technical conditions for GB/T 13384 mechanical and electrical product packaging
GB/T 18185 Hydrological Instrument Reliability Technical Requirements
GB/T 18522.6 General rules for hydrological instruments - Part 6: Rules for inspection and marking, packaging, transport, storage, instructions for use
GB/T 19677 hydrological instrument terminology and symbols
GB/T 19704 Hydrological instrument display and recording
GB/T 19705 hydrological instrument signal and interface
GB/T 50095 basic hydrological terminology and symbol standard
SL180 hydrological automatic measuring and reporting system equipment telemetry terminal
SL630 Surface Evaporation Observation Specification
3 Terms and definitions
The following terms and definitions as defined in GB/T 19677 and GB/T 50095 apply to this document.
3.1 Standard surface evaporator
An observation surface water evaporation amount that is buried below the ground, has a mouth higher than the ground, is made of FRP, is resistant to cold and frost, and has high precision. instrument.
Note 1: At present, China's E601B water surface evaporator is used as the standard equipment for water surface evaporation observation instruments.
Note 2: Rewrite GB/T 50095-2014, definition 11.6.3.3.
4 Product classification and structural composition
4.1 Product Classification
4.1.1 According to the structure, it can be divided into:
......
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
- GB/T 1449Fibre-reinforced plastic composites -- Determination of flexural properties
- GB/T 3854Test method for hardness of reinforced plastics by means of a Barcol impresser
- GB/T 9359Basic conditions and methods of environmental test for hydrological instrument
- GB/T 9969General principles for preparation of instructions for use of industrial products
- GB/T 13384General specifications for packing of mechanical and electrical product
- GB/T 18185Specification of reliability for hydrologic instruments
Similar standards
Editions of GB/T 21327
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 21327-2019 | Evaporator of water surface | current edition | Current |
| GB/T 21327-2007 | Evaporator of water surface | previous edition | Superseded |
This page sells the current edition, GB/T 21327-2019. Earlier editions are listed for reference only.
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Related Standards
GB/T 13384-2008 — General specifications for packing of mechanical and electrical product
GB/T 1449-2005 — Fibre-reinforced plastic composites -- Determination of flexural properties
GB/T 14490-2008 — Inspection of grain and oil - Determination gelatinization properties in cereal and starch by viscograph
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