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JJF 2011-2022: Calibration Specification for Propeller Anemometers
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJF 2011-2022 | English | 509 |
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Calibration Specification for Propeller Anemometers
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JJF 2011-2022
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Standard similar to JJF 2011-2022 JJF 1033 JJF 1050 JJF 1030 Basic data | Standard ID | JJF 2011-2022 (JJF2011-2022) | | Description (Translated English) | Calibration Specification for Propeller Anemometers | | Sector / Industry | Metrology & Measurement Industry Standard | | Word Count Estimation | 26,215 | | Date of Issue | 2022-12-07 | | Date of Implementation | 2023-06-07 | | Issuing agency(ies) | State Administration for Market Regulation | JJF 2011-2022: Calibration Specification for Propeller Anemometers---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.
National Metrology Technical Specifications of the People's Republic of China
Calibration specification for propeller anemometer
Released on 2022-12-07
2023-06-07 Implementation
Released by the State Administration for Market Regulation
Calibration specification for propeller anemometer
Propeler Anemometers
Responsible unit. National Meteorological Measuring Instruments Measuring Technical Committee
Main drafting unit. Meteorological Observation Center of China Meteorological Administration
Jiangsu Institute of Radio Science Co., Ltd.
Participated in the drafting unit. Zhejiang Atmospheric Sounding Technical Support Center
Jiangsu Meteorological Observation Center
This specification entrusts the National Meteorological Measuring Instruments and Measuring Technical Committee to be responsible for interpretation
The main drafters of this specification.
Li Songkui (Meteorological Observation Center of China Meteorological Administration)
Liu Xin (Meteorological Observation Center of China Meteorological Administration)
Bian Zeqiang (Meteorological Observation Center of China Meteorological Administration)
Zhou Qi (Jiangsu Institute of Radio Science Co., Ltd.)
Participating drafters.
Xiao Han (Meteorological Observation Center of China Meteorological Administration)
Luo Chang (Zhejiang Atmospheric Sounding Technology Support Center)
Zhang Zheng (Jiangsu Meteorological Observation Center)
Table of contents
Introduction (Ⅱ)
1 Scope(1)
2 References(1)
3 Terms and units of measurement(1)
3.1 Terminology(1)
3.2 Units of measurement(1)
4 Overview(1)
5 Metrological characteristics(2)
5.1 Wind speed start wind speed(2)
5.2 Wind speed indication error (2)
5.3 Wind direction starting wind speed(2)
5.4 Wind direction indication error(2)
6 Calibration conditions(2)
6.1 Environmental conditions (2)
6.2 Metrology standard measuring equipment and other equipment (3)
7 Calibration Items and Calibration Methods(3)
7.1 Calibration items(3)
7.2 Calibration method(3)
8 Expression of Calibration Results(5)
9 Recalibration interval(5)
Appendix A Calculation method of standard wind speed value (6)
Appendix B Propeller Wind Meter Calibration Record (Reference Format) (7)
Appendix C Calibration Certificate (Reference Format) (8)
Appendix D Example of Uncertainty Assessment of Wind Velocity Measurement (11)
Appendix E Example of Wind Direction Measurement Uncertainty Assessment (16)
Introduction
JJF 1071 "Rules for Compilation of National Metrology and Calibration Standards", JJF 1001 "General Metrology Terms and Definitions",
JJF 1059.1 "Assessment and Expression of Measurement Uncertainty" together constitute the basic series supporting the preparation of this specification
specification.
This specification is published for the first time.
Calibration specification for propeller anemometer
1 Scope
This specification applies to the calibration of propeller-type anemometers.
2 References
This specification refers to the following documents.
JJG431-2014 Portable three-cup wind direction anemometer
GB/T 24559-2009 Marine Propeller Wind Direction Anemometer
QX/T 8-2002 Meteorological Instrument Terminology
QX/T 323-2016 Meteorological low-speed wind tunnel technical conditions
China Meteorological Administration. Specifications for Automatic Surface Meteorological Observation. First Edition [M]. Beijing. Meteorological Press, 2020
For dated references, only the dated version applies to this specification; for undated references
document, its latest version (including all amendments) applies to this specification.
3 Terminology and units of measurement
3.1 Terminology
The propeller changes from stationary to continuous rotation, and the propeller anemometer can display the lowest speed change.
wind speed.
The lowest wind speed when the fuselage of the propeller anemometer is released from a certain deflection angle and returns to the same axis as the wind tunnel.
3.1.3 Propeleranemometer
An instrument that measures wind speed by the speed at which a propeller that is always turned into the wind rotates.
3.2 Measurement unit measurementunit
The measurement unit of wind speed is meter per second (m/s), and the measurement unit of wind direction is degree (°).
4 Overview
The propeller-type anemometer (hereinafter referred to as "anemometer") is an anemometer that integrates the functions of wind direction and wind speed measurement.
The anemometer is composed of wind direction components, wind speed components, mounting rods, northing kits and other components, and its appearance is shown in Figure 1
The composition structure is shown in Figure 2.
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