Search result: JJG 1182-2021
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Verification Regulation of Vector Hydrophones in the Frequency Range 20 Hz to 1 kHz
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JJG 1182-2021
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| Standard ID | JJG 1182-2021 (JJG1182-2021) | | Description (Translated English) | Verification Regulation of Vector Hydrophones in the Frequency Range 20 Hz to 1 kHz | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A59 | | Classification of International Standard | 17.140 | | Word Count Estimation | 19,195 | | Date of Issue | 2021-12-28 | | Date of Implementation | 2022-06-28 | | Issuing agency(ies) | State Administration for Market Regulation | | Summary | This standard applies to the initial verification, subsequent verification and in-use inspection of vector hydrophones used in the frequency range of 20Hz~1kHz. For the type of vector hydrophone containing sound pressure channels, this standard is only applicable to the verification of its vector channels. |
JJG 1182-2021: Verification Regulations for 20Hz～1kHz Vector Hydrophone
National Metrology Verification Regulations of the People's Republic of China
20Hz~1kHz vector hydrophone
Released on 2021-12-28
2022-06-28 Implementation
Released by the State Administration for Market Regulation
20Hz~1kHz vector hydrophone
Verification Regulations
Responsible unit: National Acoustic Metrology Technical Committee
Main drafting unit: The 715th Research Institute of China Shipbuilding Industry Corporation
Participating in the drafting unit: Institute of Acoustics, Chinese Academy of Sciences
Harbin Engineering University
This regulation entrusts the National Acoustic Metrology Technical Committee to be responsible for interpretation
The main drafters of this regulation:
Fei Teng (The 715th Research Institute of China Shipbuilding Industry Corporation)
Jia Guanghui (No:715 Research Institute of China Shipbuilding Industry Corporation)
Zhao Han (No:715 Research Institute of China Shipbuilding Industry Corporation)
Participating drafters:
Mo Xiping (Institute of Acoustics, Chinese Academy of Sciences)
Chen Hongjuan (Harbin Engineering University)
Table of contents
Introduction (Ⅱ)
1 range(1)
2 References(1)
3 Terms and units of measurement(1)
3:1 Particle acceleration sensitivity (1)
3:2 Particle acceleration sensitivity level (1)
3:3 Particle velocity sensitivity (1)
3:4 Sensitivity level of particle velocity (2)
3:5 Particle displacement sensitivity (2)
3:6 Particle displacement sensitivity level(2)
3:7 Frequency Response of Sensitivity Level(2)
3:8 Axial Sensitivity Asymmetry(2)
3:9 Transverse rejection ratio(2)
4 Overview(2)
5 Metrological performance requirements (2)
5:1 Sensitivity levels(2)
5:2 Frequency Response of Sensitivity Level(3)
5:3 Directivity(3)
6 General technical requirements (3)
6:1 Appearance(3)
6:2 Marking and factory information (3)
6:3 Functionality(3)
7 Measuring Instrument Control(3)
7:1 Test conditions (3)
7:2 Verification items and verification methods (4)
7:3 Processing of verification results (8)
7:4 Verification cycle (8)
Appendix A Format of the Inner Pages of the Verification Certificate and Verification Result Notification (9)
A:1 Format of the inner page of the verification certificate (9)
A:2 Format of the inner page of the test result notification (12)
Appendix B Standing Wave Tube Design Requirements (13)
introduction
This regulation is prepared according to the rules given in JJF1002-2010 "Rules for Compilation of National Metrology Verification Regulations", and
According to the requirements of JJF1059:1-2012 "Assessment and Expression of Measurement Uncertainty", the measurement uncertainty is evaluated and expressed:
This regulation uses the standing wave tube absolute calibration method, which is consistent with JJF1340-2012 "20Hz~2000Hz vector
It is different from Hydrophone Calibration Specification, which uses the standing wave tube comparison method:
This regulation is published for the first time:
Verification Regulations for 20Hz~1kHz Vector Hydrophone
1 Scope
This regulation applies to the initial verification and follow-up verification of vector hydrophones used in the frequency range of 20Hz~1kHz
and check in use:
For the type of vector hydrophone that includes a sound pressure channel, this regulation is only applicable to the verification of its vector channel:
2 References
This procedure references the following documents:
JJG 233-2008 piezoelectric accelerometer
JJG 449-2014 Octave and Fractional Octave Filters
JJF1001 General Metrology Terms and Definitions
JJF1034-2020 Acoustic Metrology Terms and Definitions
JJF1340-2012 20Hz~2000Hz vector hydrophone calibration specification
GB/T 3102:7 Acoustic quantities and units
Commonly used frequencies in GB/T 3240-1982 acoustic measurement
GB/T 3947 Acoustic Terminology
For dated references, only the dated version applies to this regulation; for undated references
document, its latest version (including all amendments) applies to this regulation:
3 Terminology and units of measurement
JJF1001, JJF1034, GB/T 3947 and JJF1340-2012 and the following terms and definitions apply
in this regulation:
This regulation adopts the quantities and units specified in GB/T 3102:7:
Ma
The ratio of the open circuit voltage at the output of a vector hydrophone to the actual particle acceleration acting on its receiving surface:
Unit: V/(m s-2):
Ma
The base 10 logarithm of the ratio of the magnitude of the particle acceleration sensitivity to the reference value multiplied by 20:
Unit: dB:
Note: The reference value is 1V/(m·s-2):
Mv
The ratio of the open circuit voltage at the output of a vector hydrophone to the actual particle velocity acting on its receiving surface:
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