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JJG 665-2004 English PDF

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JJG 665-2004: Verification Regulation of Ultrasonic Power Meter for Milliwatt Level
Status: Valid

JJG 665: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 665-2004English339 Add to Cart 3 days [Need to translate] Verification Regulation of Ultrasonic Power Meter for Milliwatt Level Valid JJG 665-2004
JJG 665-1990English359 Add to Cart 3 days [Need to translate] Verification Regulation of Ultrasonic Power Meter for Milliwatt Level Obsolete JJG 665-1990

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Basic data

Standard ID JJG 665-2004 (JJG665-2004)
Description (Translated English) Verification Regulation of Ultrasonic Power Meter for Milliwatt Level
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A59
Classification of International Standard 17.140
Word Count Estimation 13,173
Date of Issue 2004-09-21
Date of Implementation 2005-03-21
Older Standard (superseded by this standard) JJG 665-1990
Quoted Standard 2004 technical regulations issued by national metrology (industrial measurement 2005 Volume 15, Issue 1)
Regulation (derived from) 2004 technical regulations issued by national metrology (industrial measurement 2005 Volume 15, Issue 1)
Issuing agency(ies) State Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to ultrasonic power (1 ~ 500) mW milliwatt range of ultrasonic power meter initial verification, testing and use of follow-up inspection.

JJG 665-2004: Verification Regulation of Ultrasonic Power Meter for Milliwatt Level

---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 Ultrasonic Power Meter for Milliwatt Level National Metrology Verification Regulations of the People's Republic Milliwatt ultrasonic power meter Released on.2004-09-21 2005-03-21 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Milliwatt-level ultrasonic power meter verification procedure Replace JJG 665-1990 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on September 21,.2004, and It will take effect on March 21,.2005. Focal Point. National Acoustic Metrology Technical Committee Drafted by. China Institute of Metrology Guangdong Institute of Metrology This procedure entrusts the National Acoustic Metrology Technical Committee to explain Drafters of this procedure. Zhu Yan (China Institute of Metrology) Bian Wenping (China Institute of Metrology) Xu Yuezhen (Guangdong Institute of Metrology)

table of Contents

1 Scope (1) 2 Citations (1) 3 Overview (1) 4 Metrology performance requirements (1) 4.1 Ultrasonic power measurement range (1) 4.2 Frequency range (1) 4.3 Maximum allowable error (1) 5 General technical requirements (1) 5.1 Appearance (1) 5.2 Nameplate, logo and instruction manual (1) 6 measuring instrument control (2) 6.1 Verification conditions (2) 6.2 Verification project (3) 6.3 Verification method (3) 6.4 Processing of verification results (4) 6.5 verification period (4) Appendix A Milliwatt Ultrasonic Power Meter Verification Certificate Inner Page Format (5) Appendix B Format of the milliwatt-level ultrasonic power meter verification result notice (6) Appendix C Example of Evaluation of Uncertainty (7) Milliwatt-level ultrasonic power meter verification procedure

1 Scope

This procedure is applicable to the first verification of milliwatt-level ultrasonic power meters with ultrasonic power in the range of (1~500) mW. Subsequent verification and inspection in use.

2 Citations

This procedure refers to the following documents. GB/T 7966-1997 "Measurement of ultrasonic sound power in the frequency range (0.5~10)MHz" When using this procedure, care should be taken to use the current valid version of the above cited documents.

3 Overview

The milliwatt ultrasonic power meter is mainly composed of an anechoic water tank, a reflective target, a sensor, and an indication display portion. Milliwatt level As a portable ultrasonic power measuring instrument, the ultrasonic power meter is widely used in its convenient operation and convenient carrying. Each ultrasonic instrument manufacturer, medical department and various measurement departments. Milliwatt-level ultrasonic power meters usually use the principle of radiation force, using the measurement of the receiving target and the micro force sensor. The system measures the radiation force in the ultrasonic field and obtains the corresponding average ultrasonic power according to the sound force conversion formula.

4 Metrological performance requirements

4.1 Ultrasonic power measurement range Ultrasonic power measurement range. (1~500) mW. For use only for verification of ultrasound diagnostics, Doppler fetal heart rate and super The ultrasonic power meter of the sound monitor can measure the power range from (1~100) mW. 4.2 Frequency range Frequency range. (0.5~10)MHz. 4.3 Maximum allowable error Maximum allowable error. ±10%.

5 General technical requirements

5.1 Appearance 5.1.1 The surface of the casing should be smooth and smooth, and there should be no appearance damage that affects the accuracy of the instrument. 5.1.2 The switch adjustment knob (or screw) should be complete, easy to use, reliable and accurate. 5.1.3 External wires, plugs and sockets should be safe and secure, reliable and free from looseness. 5.2 Nameplate, logo and instruction manual 5.2.1 The milliwatt ultrasonic power meter shall have the following clear and durable markings. 1) the name of the manufacturer; 2) Model and factory number of the product;

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