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JJF 1340-2012 English PDF

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Q: Should I purchase the latest version JJF 1340-2012?

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US$529.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1340-2012: Calibration Specification for Vector Hydrophones in Frequency Range 20Hz to 2000 Hz
Status: Valid

JJF 1340: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1340-2012	529	Add to Cart	4 days	Calibration Specification for Vector Hydrophones in Frequency Range 20Hz to 2000 Hz	Valid
JJF 1340-1990	239	Add to Cart	2 days	O.T.N. of 4πx(PPC)-γ Coincidence Radioactivity Primary Standard	Obsolete

Similar standards

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

Basic data

Standard ID: JJF 1340-2012 (JJF1340-2012)
Description (Translated English): Calibration Specification for Vector Hydrophones in Frequency Range 20Hz to 2000 Hz
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A59
Classification of International Standard: 17.140
Word Count Estimation: 23,221
Quoted Standard: JJF 1001-2011; JJF 1034-2005; JJF 1059-1999; GB 3102.7-1993; GB/T 3947-1996; GB/T 4130-2000
Regulation (derived from): AQSIQ Announcement No. 45 of 2012
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to atmospheric pressure within a frequency range of 20Hz ~ 2000Hz using vector hydrophone calibration.

JJF 1340-2012: Calibration Specification for Vector Hydrophones in Frequency Range 20Hz to 2000 Hz

---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 Vector Hydrophones in Frequency Range 20Hz to 2000 Hz People's Republic of China National Metrology Technical Specifications 20Hz ~ 2000Hz vector hydrophone calibration specification Issued on. 2012-03-20 2012-06-20 implementation The State Administration of Quality Supervision, Inspection and Quarantine released 20Hz ~ 2000Hz vector hydrophone Calibration Specification inFrequencyRang e20Hzto2000Hz Focal point. the National Committee of the acoustic measurement technology The main drafting units. China Shipbuilding Industry Corporation seventh fifteen Institute Participated in the drafting unit. Institute of Acoustics China Shipbuilding Industry Corporation sound of the sea Technology Co., Ltd. This specification metering commissioned National Technical Committee is responsible for interpreting acoustics Drafters of this specification. Zhao Han (China Shipbuilding Industry Corporation seventh fifteen Institute) Fee Teng (China Shipbuilding Industry Corporation seventh fifteen Institute) Yu Jian (China Shipbuilding Industry Corporation seventh fifteen Institute) Drafters participate. Zhu Hou Qing (Institute of Acoustics) Guo Lin sent (China Shipbuilding Industry Corporation sound of the sea Technology Co., Ltd.)

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 terminology and units of measurement (1) 3.1 hydrophone (1) 3.2 vector hydrophone sound pressure sensitivity level (1) 3.3 hydrophone velocity sensitivity level (1) 3.4 Vector acoustic pressure gradient hydrophone sensitivity level (2) 3.5 Axial sensitivity asymmetry (2) 3.6 lateral inhibition ratio (2) 4 Overview (2) 5 Metrological characteristics (2) 5.1 sound pressure sensitivity level (2) 5.2 velocity sensitivity level (2) 5.3 Sound pressure gradient sensitivity level (2) 5.4 Vector - Sound pressure channel phase difference (2) Directivity 5.5 (3) 6 calibration conditions (3) Environmental conditions 6.1 (3) 6.2 standards and other measuring equipment (3) 7 calibration items and calibration methods (4) 7.1 calibration items (4) 7.2 Calibration method (4) 8 calibration results expression (8) 8.1 Calibration Data Processing (8) 8.2 calibration certificate (8) 8.3 calibration measurement uncertainty (8) 9 Recalibration interval (8) Appendix A calibration certificate (9) Appendix B wave tube design requirements (13) Appendix C sound pressure sensitivity level measurements Uncertainty Evaluation Example (14)

Introduction

This specification based JJF 1071-2010 "national measurement calibration specifications write rules" in preparation. This specification reference to GB/T 4130-2000 "low-frequency acoustic hydrophone calibration method" prescribed acoustic hydrophone Pressure sensitivity secondary calibration methods. 20Hz ~ 2000Hz vector hydrophone calibration specification

1 Scope

This standard applies to atmospheric pressure, hydrophone within 20Hz ~ 2000Hz frequency range of the calibration. 2. References This specification references the following documents. JJF 1001-2011 common measurement terms and definitions JJF 1034-2005 acoustic measurement terminology and definitions JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement GB 3102.7-1993 Quantities and units of acoustics GB/T 3947-1996 Acoustics Terminology GB/T 4130-2000 low-frequency acoustic hydrophone calibration methods For dated references, only the dated edition applies to this specification; undated reference documents Member, the latest edition (including any amendments) applies to this specification.

3 terminology and units of measurement

JJF 1001-2011, JJF 1034-2005, GB 3102.7-1993 and GB/T 3947-1996 defined And the following terms and definitions apply to this specification. This specification uses quantities and units GB/T 3102.7-1993 requirements. 3.1 hydrophone vectorhydrophone Output voltage and particle velocity or sound pressure gradient hydrophone into a ratio, and its point of view of a cosine function similar Characteristic shape, and the frequency characteristics do not change with the change. 3.2 vector hydrophone sensitivity of sound pressure level (Mp) pressuresensitivitylevelofvectorhydrophone Vector hydrophone pressure sensitivity Mp square with the reference sound pressure sensitivity to the base 10 of the ratio of the square Mpref Multiplied by 10. Note. 1 in decibels (dB). 2 Mpref = 1V/μPa. 3.3 hydrophone velocity sensitivity level (Mv) particlevelocitysensitivitylevelofvectorhydrophone Hydrophone sensitivity Mv square velocity and the reference velocity sensitivity Mvref than the square of the base 10 of Multiplied by 10. Note. 1 in decibels (dB). 2 Mvref = 1V/(m · s-1). ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1340-2012_English be delivered?

Answer: Upon your order, we will start to translate JJF 1340-2012_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 JJF 1340-2012_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1340-2012_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.

Question 5: Should I purchase the latest version JJF 1340-2012?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJF 1340-2012 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.