Home Cart Quotation About-Us
www.ChineseStandard.net
SEARCH

JJG 1172-2019 English PDF

Q: How long will the true-PDF of English version of JJG 1172-2019 be delivered?

Upon your order, we will start to translate JJG 1172-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Q: Can I share the purchased PDF of JJG 1172-2019_English with my colleagues?

Yes. The purchased PDF of JJG 1172-2019_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Q: Does the price include tax/VAT?

Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries). Avoidance of Double Taxation Agreements (DTAs) between Singapore and 100+ Countries: https://www.iras.gov.sg/taxes/international-tax

Q: Do you accept my currency other than USD?

Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

US$489.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 1172-2019: Working Standard Microphones(Free-field Comparison Method)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 1172-2019	489	Add to Cart	4 days	Working Standard Microphones(Free-field Comparison Method)	Valid

Similar standards

GB/T 3222.2 GB/T 3222.1 JJG 188 JJG 1182 JJG 1175 JJG 1166

Basic data

Standard ID: JJG 1172-2019 (JJG1172-2019)
Description (Translated English): Working Standard Microphones(Free-field Comparison Method)
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A59
Classification of International Standard: 17.140
Word Count Estimation: 22,287
Date of Issue: 2019
Date of Implementation: 2020-03-31
Issuing agency(ies): State Administration for Market Regulation

JJG 1172-2019: Working Standard Microphones(Free-field Comparison Method)

---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 Working Standard Microphone (Free Field Comparison Method)) National Measurement Verification Regulations of the People's Republic of China Working standard microphone (Free field comparison method) Published on December 31,.2019 2020-03-31 Implementation Issued by the State Administration of Market Supervision and Administration Working standard microphone (free field comparison method) Verification regulations Centralized unit. National Acoustic Metrology Technical Committee Drafting unit. Chinese Academy of Metrology Shenzhen Institute of Metrology and Quality Inspection Zhejiang Academy of Metrology Fujian Academy of Metrology This regulation is entrusted to the National Acoustic Measurement Technical Committee for interpretation Drafters of this regulation. Feng Xiujuan (Chinese Academy of Metrology) He Longbiao (Chinese Academy of Metrology) Niu Feng (Chinese Academy of Metrology) Guoqing Zhang (Shenzhen Institute of Metrology and Quality Inspection) Qiu Jianmin (Zhejiang Institute of Metrology) Li Qun (Fujian Institute of Metrology)

Introduction (Ⅱ) 1 Scope (1) 2 References (1) 3 Terms and units of measurement (1) 3.1 Working standard microphone (2) 3.2 Reference microphone (2) 3.3 Monitoring microphone (2) 4 Overview (2) 5 Measurement performance requirements (2) 5.1 Free field sensitivity level (2) 5.2 Frequency response of sensitivity level (2) 6 General technical requirements (3) 6.1 Logo (3) 6.2 Factory data (3) 7 Control of measuring instruments (3) 7.1 Verification conditions (3) 7.2 Verification items (4) 7.3 Verification method (5) 7.4 Processing of verification results (7) 7.5 Verification period (7) Appendix A. Amendment of environmental parameters with reference to the free field sensitivity level of the microphone (8) Appendix B. Internal page format of verification certificate and verification result notification (9) Appendix C Examples of measurement uncertainty assessment (11)

Introduction

This regulation is based on the rules and format given in JJF1002-2010 "Rules for Compiling National Measurement Verification Regulations" prepared by. This regulation refers to the international standard IEC 61094-8.2012 "Electroacoustic Measurement Microphone Part 8.Determination "Comparison of free-field sensitivity for standard microphones" and GB/T 20441.4-2006 "Measurement Microphones Part 4" Points. Working Standard Microphone Specification". Published JJG 1019-2007 "Working Standard Microphone (Coupling Cavity Comparison Method)", JJG 175-2015 "Working Standard Microphone (Electrostatic Exciter Method)" and this regulation replace JJG 175-1998 "Test Capacitance "Microphone", this regulation replaces the content of the free field comparison method in JJG 175-1998 "Testing Condenser Microphones". This regulation is issued for the first time. Verification Regulation of Working Standard Microphone (Free Field Comparison Method)

1 Scope

This regulation is applicable to meet GB/T 20441.4-2006 "Measurement Microphone Part 4.Working Standard Sound Transmission The first verification, follow-up verification and in-use inspection of the working standard microphones specified in the "Microphone Specification".

2 Reference documents

This regulation refers to the following documents. JJG 175-2015 working standard microphone (electrostatic exciter method) JJF1001 General Measurement Terms and Definitions JJG 1019-2007 working standard microphone (coupling cavity comparison method) JJF1034 Terms and Definitions of Acoustic Measurement Terms JJF1059.1 Evaluation and expression of measurement uncertainty JJF1147 Calibration Specification for Acoustic Characteristics of Anechoic Room and Semi-anechoic Room GB/T 3102.7 Acoustic quantities and units GB/T 3947 Acoustic terms GB/T 15173-2010 Electroacoustic Acoustic Calibrator GB/T 20441.3-2010 Electroacoustic measurement microphones Part 3.Use reciprocity technology for laboratory Primary method of free field calibration of standard microphone GB/T 20441.4-2006 Measurement microphones Part 4.Specifications of working standard microphones IEC 61094-2 Electroacoustic Measurement Microphone Part 2.Using Reciprocity Technology to Transmit Laboratory Standard Sound The original method of the sound pressure calibration of the instrument (Electroacoustics-Measurementmicrophones-Part 2.Pri- marymethodforpressurecalibrationoflaboratorystandardmicrophonesbythereciproc- itytechnique) IEC 61094-3 Electroacoustic Measurement Microphone Part 3.Using Reciprocity Technology to Transmit Laboratory Standard Sound The primary method of free field calibration of the instrument (Electroacoustics-Measurementmicrophones-Part 3. Primarymethodforfree-fieldcalibrationoflaboratorystandardmicrophonesbythereci- procitytechnique) IEC 61094-8.2012 Electroacoustic measurement microphones Part 8.Determination of working standard microphone free field Sensitivity comparison method (Electroacoustics-Measurementmicrophones-Part 8.Methodsfor determiningthefree-fieldsensitivityofworkingstandardmicrophonesbycomparison) 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

This regulation adopts the quantity and unit specified in GB/T 3102.7. ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 1172-2019_English be delivered?

Answer: Upon your order, we will start to translate JJG 1172-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJG 1172-2019_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 1172-2019_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.