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JJF 1346-2012 English PDF

US$369.00 · In stock
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JJF 1346-2012: Calibration Specification for Infrasonic and Ultrasonic Filters
Status: Valid

JJF 1346: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1346-2012	English	369	Add to Cart	3 days [Need to translate]	Calibration Specification for Infrasonic and Ultrasonic Filters	Valid	JJF 1346-2012
JJF 1346-1990	English	239	Add to Cart	2 days [Need to translate]	(The X-ray energy (60 ~ 250kV) exposure baseline operating technical specifications)	Obsolete	JJF 1346-1990

PDF similar to JJF 1346-2012

Standard similar to JJF 1346-2012

GB/T 3222.2 GB/T 3222.1 JJG 188 JJF 1338 JJF 1339 JJF 1337

Basic data

Standard ID	JJF 1346-2012 (JJF1346-2012)
Description (Translated English)	Calibration Specification for Infrasonic and Ultrasonic Filters
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A59
Classification of International Standard	17.140
Word Count Estimation	16,188
Quoted Standard	JJG 449-2001; JJF 1001-2011; JJF 1034-2005; JJF 1059-1999; GB 3102.5-1993; GB 3102.7-1993; ISO 7169-1995
Regulation (derived from)	State Administration of Quality Supervision, Inspection and Quarantine Notice 2012 No. 63;
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard specifies the frequency range of 1Hz ~ 50Hz and 2kHz ~ 100kHz of infrasound and ultrasound measurement of filter characteristics, calibration conditions and calibration methods. This standard applies to the frequency range of 1Hz ~ 50Hz and

JJF 1346-2012: Calibration Specification for Infrasonic and Ultrasonic Filters

---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.
Calibration Specification for Infrasonic and Ultrasonic Filters National Metrological Technical Code of the People's Republic of China Infrasound and ultrasonic filters Calibration specification 2012-04-17 release 2012-07-17 Implementation State Administration of Quality Supervision, Inspection and Quarantine issued Infrasound and ultrasonic filters Calibration specification Coordinate unit. National Acoustics Metrology Technical Committee Drafting unit. China Shipbuilding Industry Corporation No. 107 Institute China Institute of Metrology Hengyang Instrument Electric Equipment Co., Ltd Hubei Institute of Metrology and Testing Technology This specification entrusts the National Acoustics Metrology Technical Committee to explain The drafters of this specification. Zhu Chuanhuan (China Shipbuilding Industry Corporation No. 701 Institute) Zhang Hengping (China Shipbuilding Industry Corporation No. 701 Institute) Tang Jun (China Shipbuilding Industry Corporation No. 701 Institute) Chen Jianlin (China Institute of Metrology) Bian Wenping (China Institute of Metrology) Liu Xiangheng (Hengyang Instrument Electric Equipment Co., Ltd.) Yao Qiuping (Hubei Institute of Metrology and Testing Technology)

Introduction (II) 1 Scope (1) 2 References (1) 3 terms and units of measurement (1) 3.1 Reference frequency (1) 3.2 Linear operating range (1) 4 Overview (1) 5 Metrological characteristics (2) 5.1 relative attenuation (2) 5.2 Linear Operating Range (2) 6 Calibration conditions (2) 6.1 Environmental conditions (2) 6.2 Standard and other equipment (2) 7 Calibration items and calibration methods (2) 7.1 Calibration items (2) 7.2 Calibration method (3) 8 Calibration results (5) 8.1 Calibration Data Processing (5) 8.2 Calibration Certificate (5) 8.3 Uncertainty of measurement of calibration results (5) 9 re-school time interval (5) Appendix A Contents of the Calibration Certificate (6) Appendix B Example of Evaluation of Measurement Uncertainty (9)

Introduction

This specification is based on the preparation of JJF 1071-2010 "national measurement calibration rules for the preparation of rules", the main norms Reference to JJG449-2001 "octave and 1/3 octave filter" and ISO 7196..1995 "Acoustic infrasound Measurement of frequency weighting characteristics (Acoustics-Frequency-weightingcharacteristicforinfrasound measurement. Secondary and ultrasonic filter calibration specifications

1 Scope

This specification specifies the frequency range of 1Hz ~ 50Hz and 2kHz ~ 100kHz secondary sound and ultrasonic filter (Hereinafter referred to as the filter) measurement characteristics, calibration conditions and calibration methods. This specification applies to infrasound and ultrasonic filters with frequency ranges from 1 Hz to 50 Hz and from 2 kHz to 100 kHz calibration.

2 reference file

This specification refers to the following documents. JJG449-2001 octave and 1/3 octave filter Standard Terminology and Definitions for JJF 1001-2011 Terminology and definitions of acoustical metrology nouns JJF 1034-2005 Measurement Uncertainty Evaluation and Representation of JJF 1059-1999 Electrical and magnetic quantities and units GB 3102.5-1993 Acoustics quantities and units ISO 7196..1995 Acoustics-Frequency- weightingcharacteristicforinfrasoundmeasurement For dated references, only the dated edition applies to this specification; references that are not dated , The latest version (including all modifications) applies to this specification.

3 terms and units of measurement

JJF 1001-2011, JJF 1034-2005, GB 3102.5-1993 and GB 3102.7-1993 The terms, definitions, quantities and units of measurement and the following terms and definitions apply to this specification. 3.1 reference frequency referencefrequencies In each mode of the filter, within a specified frequency range, a specific frequency for relative attenuation is calculated. 3.2 linear work range linearoperatingrange For the specified infrasound and ultrasonic filter bandwidth and level range, in the 1Hz ~ 100kHz frequency range of electricity When the flatness error is within the specified maximum permissible error, the range of the steady-state sinusoidal input signal level, in minutes Shell (dB).

4 Overview

The infrasound and ultrasonic filter is a filtering device in the infrasound and ultrasonic frequency bands, providing a variety of frequency bands Filter the information of the spectrum. It can be a component in a measurement system, or it can be a separate instrument. General infrasound and The ultrasonic filter contains six different modes, namely Ultrasound (Ult), Ultrasound Weighting (U1), Audio (U), Infrasound (Infra), infrasound weighting 1 (G1), infrasound weighted 2 (G2), they play a different band of filtering.

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