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Single Point Acoustic Doppler Current Measuring Instrument
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Basic data
| Standard ID | JJG 1166-2019 (JJG1166-2019) |
| Description (Translated English) | Single Point Acoustic Doppler Current Measuring Instrument |
| Sector / Industry | Metrology & Measurement Industry Standard |
| Classification of Chinese Standard | A59 |
| Classification of International Standard | 17.140 |
| Word Count Estimation | 23,298 |
| Date of Issue | 2019 |
| Date of Implementation | 2020-03-31 |
| Issuing agency(ies) | State Administration for Market Regulation |
JJG 1166-2019: Single Point Acoustic Doppler Current Measuring Instrument
---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.
(Verification Regulation of Acoustic Doppler Current Current Single Point Measuring Instrument)
National Measurement Verification Regulations of the People's Republic of China
Acoustic Doppler current point measuring instrument
Published on December 31,.2019
2020-03-31 Implementation
Issued by the State Administration of Market Supervision and Administration
Acoustic Doppler current point measuring instrument
Verification regulations
Focal point. National Technical Committee for Measuring Special Marine Measuring Instruments
Main drafting unit. South China Sea Standard Metrology Center, State Oceanic Administration
Participating in the drafting unit. Sun Yat-sen University
Donghai Standard Measurement Center of State Oceanic Administration
This Regulation is entrusted to the National Technical Committee for Measuring Special Marine Instruments for interpretation
The main drafters of this regulation.
Zhang Yuehong (South China Sea Standard Metrology Center, State Oceanic Administration)
Qu Niandong (South China Sea Standard Metrology Center, State Oceanic Administration)
Participating drafters.
Jiemin Zhan (Zhongshan University)
Zhao Xiuling (National Oceanic Administration East China Sea Standard Metrology Center)
Weng Dexian (South China Sea Standard Metrology Center, State Oceanic Administration)
Su Wei (Sun Yat-sen University)
Tao Tao (Zhongshan University)
table of Contents
Introduction (Ⅱ)
1 Scope (1)
2 References (1)
3 Terms and units of measurement (1)
3.1 Terminology (1)
3.2 Unit of measurement (1)
4 Overview (1)
5 Measurement performance requirements (2)
6 General technical requirements (2)
7 Control of measuring instruments (2)
7.1 Verification conditions (2)
7.2 Verification items (3)
7.3 Verification method (4)
7.4 Processing of verification results (6)
7.5 Verification period (6)
Appendix A Calculation of vehicle speed change rate (7)
Appendix B Conversion of Standard Flow Rate (8)
Appendix C. Acoustic Doppler Current Current Single Point Measuring Instrument Verification Record Table Format (9)
Appendix D Format of the inner pages of the verification certificate (14)
Appendix E Format of the inner page of the notice of verification result (16)
Introduction
The preparation of this regulation is based on JJF1001-2011 "General Measurement Terms and Definitions", JJG 1002-2010 "Country
The "Measuring Verification Regulations Writing Rules" is formulated on the basis and basis.
This regulation is issued for the first time.
Verification Regulation of Acoustic Doppler Current Current Single Point Measuring Instrument
1 Scope
This regulation is applicable to acoustics with a flow direction measurement range of (0~360)° and a flow rate measurement range of (5~300) cm/s
The first verification, subsequent verification and in-use inspection of Doppler current single-point measuring instrument.
2 Reference documents
This regulation refers to the following documents.
JJG 1001-2011 General Measurement Terms and Definitions
GB/T 15920-2010 Oceanographic terminology physical oceanography
For dated references, only the dated versions are applicable to this Regulation; for those without dates
The latest version (including all amendments) is applicable to this regulation.
3 Terms and units of measurement
3.1 Terminology
The terms and definitions defined in JJG 1001-2001 and GB/T 15920-2010 are applicable to this regulation.
3.2 Unit of measurement
3.2.1 Flow rate unit. centimeters per second, symbol. cm/s.
3.2.2 Flow direction unit. degree, symbol. °.
4 Overview
Acoustic Doppler ocean current single-point measuring instrument (hereinafter referred to as "ocean current meter") is based on the principle of acoustic Doppler frequency shift,
The transducer emits short acoustic pulses in the direction of the narrow beam and receives the scattered particles returned by the beam as it passes through the body of water
Acoustic signals, use these signals to calculate the velocity and direction. The current meter can measure the current in the anchor/fixed state
Measure the flow velocity and direction of the water body in the area of 0.4m~1.0m from the transducer at the installation depth. The working principle of the current meter is shown in Figure 1
As shown.
Note. Scattered particulate matter usually refers to plankton, air bubbles, suspended sediment or organic matter, and particulate matter produced by human activities.
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