HOME Cart(0) Quotation About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (18 Oct 2025)

JJF 1145-2006 English PDF

US$469.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1145-2006: Calibration specification for electret microphone instrument
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1145-2006	English	469	Add to Cart	3 days [Need to translate]	Calibration specification for electret microphone instrument	Valid	JJF 1145-2006

PDF similar to JJF 1145-2006

Standard similar to JJF 1145-2006

GB/T 3222.2 GB/T 3222.1 JJG 188 JJG 1190 JJF 2012 JJG 1145

Basic data

Standard ID	JJF 1145-2006 (JJF1145-2006)
Description (Translated English)	Calibration specification for electret microphone instrument
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A59
Word Count Estimation	18,164
Date of Issue	2006-05-23
Date of Implementation	2006-08-23
Quoted Standard	GB/T 3102.7-1993; GB/T 3947-1996; JJF 1034-2005; JJF 1059-1999; JJF 1001-1998
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to Analog and digital electret microphone tester calibration.

JJF 1145-2006: Calibration specification for electret microphone 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.
Calibration specification for electret microphone instrument National Metrology Technical Specification of the People's Republic Electret microphone tester calibration specification Released on.2006-05-23 Implementation of.2006-08-23 The General Administration of Quality Supervision, Inspection and Quarantine issued Electret microphone tester calibration specification ElectretMicrop honeInstruments This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine on May 23,.2006, and Implemented on August 23,.2006. Focal Point. National Acoustic Metrology Technical Committee Drafting unit. Guangzhou Metrology and Testing Institute Hangzhou Aihua Instrument Co., Ltd. Shenzhen Institute of Metrology and Quality Inspection Guangzhou Boiler and Pressure Vessel Supervision and Inspection Institute This specification is interpreted by the National Acoustic Metrology Technical Committee. Drafters of this specification. Zhou Lunbin (Guangzhou Metrology and Testing Institute) Dai Bin (Guangzhou Metrology and Testing Institute) Jiang Yan (Guangzhou Metrology and Testing Institute) Zhang Shaodong (Hangzhou Aihua Instrument Co., Ltd.) Zhang Guoqing (Shenzhen Metrology and Quality Inspection Institute) Ma Boqun (Guangzhou Boiler and Pressure Vessel Inspection and Inspection Institute) Zhou Changhua (Guangzhou Metrology and Testing Institute)

1 Scope (1) 2 Citations (1) 3 terms and units of measurement (1) 3.1 Sound pressure (1) 3.2 Response, sensitivity (1) 3.3 Sound pressure sensitivity (1) Level 3.4 (2) 3.5 Sound pressure sensitivity level (2) 4 Overview (2) 5 Measurement characteristics (2) 5.1 Sound source part (2) 5.2 Work Feeder Section (2) 5.3 Sound Pressure Sensitivity Level Test Unit (2) 6 Calibration conditions (3) 6.1 Environmental conditions (3) 6.2 Measurement standards and other equipment (3) 7 Calibration items and calibration methods (4) 7.1 Calibration Project (4) 7.2 Calibration method (4) 8 Calibration result expression (8) 9 re-study interval (8) Appendix A Calibration Certificate Contents (9) Appendix B Calibration Certificate Page Format (10) Appendix C Example of Uncertainty in Measurement Results (11) Electret microphone tester calibration specification

1 Scope

This specification applies to the calibration of pointer and digital electret microphone testers.

2 Citations

This specification refers to the following documents. GB/T 3102.7-1993 "Amount and unit of acoustics" GB/T 3947-1996 "Acoustic terminology" JJF 1001-1998 General Terms and Definitions JJG1034-2005 "Acoustic Measurement Terms and Definitions" JJF 1059-1999 "Measurement and Expression of Measurement Uncertainty" Use of this specification should be done with the current valid version of the above cited documents.

3 terms and units of measure

This specification uses the relevant terms and definitions in GB/T 3947-1996, JJF 1001-1998 and JJG1034-2005. This specification also uses the quantities and units specified in GB/T 3102.7-1993. 3.1 Sound pressure (p) soundpressure The difference between the pressure in the medium and the static pressure when there is sound waves. The unit is Pa [Ska], Pa. Note. 1 Sound pressure is the abbreviation of effective sound pressure in general use. The effective sound pressure is the rms value of the instantaneous sound pressure over a period of time. The time should be an integer multiple of the period or long enough to not affect the result of the calculation. 2 The instantaneous value, average value, peak value, maximum value or peak-to-peak value of sound pressure should be respectively indicated as instantaneous sound pressure, average sound pressure and peak Value sound pressure, maximum sound pressure or peak to peak sound pressure. 3.2 response, sensitivity response, sensitivity The ratio of the specified amount of transducer, instrument, and system output to another specified amount at the input. Response or sensitivity It can also be expressed in "level", but the reference value must be stated. Note. The response or sensitivity must be prefixed to indicate exactly which output and input are used. 3.3 Sound pressure sensitivity pressuresensitivity The ratio of the open circuit voltage at the output of the transducer to the actual sound pressure on the transducer receiving surface. The unit is volts per unit Pa, V/Pa. Note. If the load impedance is not an open circuit, it should be stated.

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1145-2006_English be delivered?

Answer: Upon your order, we will start to translate JJF 1145-2006_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1145-2006_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1145-2006_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 [email protected]. 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.