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JJG 893-2007 English PDF

US$519.00 · In stock
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JJG 893-2007: Verification Regulation for Ultrasonic Source of Ultrasonic Doppler Foetal Meters
Status: Valid

JJG 893: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 893-2007	English	519	Add to Cart	4 days [Need to translate]	Verification Regulation for Ultrasonic Source of Ultrasonic Doppler Foetal Meters	Valid	JJG 893-2007
JJG 893-1995	English	279	Add to Cart	3 days [Need to translate]	Verification Regulation of Ultrasonic Source for Ultrasonic Doppler Fetal Heart Beat Detector	Obsolete	JJG 893-1995

PDF similar to JJG 893-2007

Standard similar to JJG 893-2007

GB/T 3222.2 GB/T 3222.1 JJG 188 JJG 921 JJG 778 JJG 185

Basic data

Standard ID	JJG 893-2007 (JJG893-2007)
Description (Translated English)	Verification Regulation for Ultrasonic Source of Ultrasonic Doppler Foetal Meters
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A59
Classification of International Standard	17.140
Word Count Estimation	20,270
Date of Issue	2007-02-28
Date of Implementation	2007-08-28
Older Standard (superseded by this standard)	JJG 893-1995
Quoted Standard	GB 3102.7; GB/T 7966; GB/T 16540; GB 16846; GB 16846; JJF 1034; JJF 1059; JJF 1001; YY 0448
Regulation (derived from)	AQSIQ Announcement No. 41 of 2007
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to the ultrasound Doppler fetal favorite source of initial verification, testing and use of follow-up inspection.

JJG 893-2007: Verification Regulation for Ultrasonic Source of Ultrasonic Doppler Foetal Meters

---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 for Ultrasonic Source of Ultrasonic Doppler Foetal Meters State verification procedures People's Republic of China Fetal Doppler ultrasound source Posted 2007-02-28 2007-08-28 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Fetal Doppler Ultrasonic source test procedures lerFoetalMeters Replacing JJG 893-1995 The regulations by the State Administration of Quality Supervision, Inspection and Quarantine on February 28, 2007 for approval and self From August 28, 2007 implementation. Focal point. the National Committee of the acoustic measurement technology The main drafting units. China Institute of Metrology Participated in the drafting unit. Hubei Provincial Institute of Measurement and Testing The measurement procedure commissioned the National Technical Committee is responsible for interpreting acoustics The main drafters of this procedure. Edge Wen Ping (China Institute of Metrology) Zhu Yan (China Institute of Metrology) Drafters participate. Yao Qiuping (Hubei Institute of Measurement and Testing)

1 Scope (1) 2. Referenced Documents (1) 3 terminology and units of measurement (1) 3.1 acoustic coupling medium (1) 3.2 Operating frequency sound (1) 3.3 negative peak sound pressure (1) Doppler frequency 3.4 (1) 3.5 Output Power (1) Integrated Sensitivity 3.6 (2) 4 Overview (2) 5 metering performance requirements (2) 5.1 Sound output beam intensity (2) 5.2 negative peak sound pressure (2) 5.3 spatial peak time average sound intensity (2) 5.4 Patient leakage current (2) 5.5 Ultrasound working frequency deviation (2) 5.6 Integrated maximum sensitivity (2) 6 General Requirements (3) 6.1 Appearance (3) 6.2 Materials and Structures (3) 6.3 Nameplate, signs and instructions for use (3) 7 control of measuring instruments (3) 7.1 test conditions (3) 7.2 Verification Project (4) 7.3 Verification Methods (4) 7.4 Verification Results Processing (9) 7.5 test cycle (9) A comprehensive maximum sensitivity measuring apparatus appendix (10) Appendix B calibration certificate and test results of notice-page format (12) Appendix C Verification Uncertainty Evaluation Examples (14) Fetal Doppler ultrasound source test procedures

1 Scope

The order applies to Fetal Doppler ultrasound source (ie, Doppler ultrasound fetal heart rate meter, hereinafter referred to as instrument Device) initial verification, subsequent verification and in-service inspection.

2 Citations

GB/T 3102.7-1993 Quantities and units of acoustics GB 7966-1987 Acoustics 0.5 ~ 10MHz frequency range of ultrasonic power measurement GB/T 16540-1996 acoustic characterization of ultrasonic fields in the frequency range 0.5 ~ 15MHz and its measurement Hydrophone law GB 16846-1997 acoustic output of medical diagnostic ultrasonic equipment disclosure requirements JJF1034-2005 acoustic measurement terminology and definitions JJF1059-1999 Evaluation and Expression of Uncertainty in Measurement JJF1001-1998 common measurement terms and definitions YY0448-2003 Doppler fetal heart rate meter When using this procedure, it should pay attention to using the currently valid version of the documents cited.

3 terminology and units of measurement

This procedure uses acoustical quantities and units GB/T 3102.7-1993 prescribed, JJF1059-1999 given Measurement Uncertainty methods, and JJF1001-1998, JJF1034-2005 and YY0448-2003 in Regulation Set of terms and definitions. According to the regulations required, gives the following terms and definitions. 3.1 acoustic coupling medium acousticcouplingmedium In order to ensure sound propagation material which is placed between the probe and the body surface. 3.2 Operating frequency sound acousticworkingfrequency Placed by the acoustic signal frequency sound field hydrophone measured. 3.3 peak negative acoustic pressure peaknegativeacousticpressure In acoustic repetition period, the maximum sound field in a particular plane or negative instantaneous sound pressure, with a peak negative acoustic pressure A positive number indicates. 3.4 Doppler frequency Dopplerfrequency Due to changes in the diffuser or between the reflector and the relative movement of the probe due to the frequency of the ultrasonic echo, i.e., the transmitted wave and The difference between the received wave frequency, also known as frequency shift. 3.5 output power outputpower Ultra-in free field under specified conditions by the ultrasound transducer to a particular medium (typically water) in radiated Sound power.

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