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JJF 1474-2014 English PDF

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US$579.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1474-2014: Calibration Specification for Non-invasive X-ray Tube Voltage Meters Used in Medical Diagnosis
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1474-2014	579	Add to Cart	5 days	Calibration Specification for Non-invasive X-ray Tube Voltage Meters Used in Medical Diagnosis	Valid

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Basic data

Standard ID: JJF 1474-2014 (JJF1474-2014)
Description (Translated English): Calibration Specification for Non-invasive X-ray Tube Voltage Meters Used in Medical Diagnosis
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A58
Classification of International Standard: 17.240
Word Count Estimation: 25,231
Date of Issue: 8/25/2014
Date of Implementation: 11/25/2014
Quoted Standard: JJG 496; JJG 744-2004; JJG 1007; IEC 61676-2009
Regulation (derived from): People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine Notice 2014 (No. 95); AQSIQ Notice 2014 No. 95
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This Standard applies to 40KV ~ 150KV medical diagnostic X-ray non-intrusive (also known as non-intrusive) tube voltmeter, calibrated tube voltage measurement part of the X-ray machine multifunction measuring instrument. This Standard does not apply to di

JJF 1474-2014: Calibration Specification for Non-invasive X-ray Tube Voltage Meters Used in Medical Diagnosis

---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 Non-invasive X-ray Tube Voltage Meters Used in Medical Diagnosis People's Republic of China National Metrology Technical Specifications Medical Diagnostic X-ray non-intrusive Tube voltmeter calibration specifications Issued on. 2014-08-25 2014-11-25 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Medical Diagnostic X-ray non-intrusive Tube voltmeter calibration specifications Diagnosis Focal point. the National Technical Committee of ionizing radiation metrology Main drafting unit. Shenzhen Academy of Metrology and Quality Inspection Participated in the drafting unit. China Testing Technology Research Institute Shanghai Measurement and Testing Technology Research Institute This specification commissioned the National Technical Committee is responsible for ionizing radiation measurement interpretation The main drafters of this specification. Zhou Yingchun (Shenzhen Academy of Metrology and Quality Inspection) Yang Yong (China Testing Technology Research Institute) Lee name trillion (Shenzhen Academy of Metrology and Quality Inspection) Zhang from China (China Testing Technology Research Institute) Drafters participate. Wu Yaoyao (Shenzhen Academy of Metrology and Quality Inspection) Zheng Yongming (China Testing Technology Research Institute) Tangfang Dong (Shanghai Institute of Measurement and Testing)

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 terminology and units of measurement (1) 3.1 The term (1) 3.2 units of measurement (2) 4 Overview (2) 5 Metrological characteristics (3) Intrinsic error 5.1 (3) 5.2 Measurement repeatability (3) 5.3 X-ray filtering effect (3) 5.4 Working Radiation lower (3) 6 calibration conditions (3) Environmental conditions 6.1 (3) 6.2 standards and other measuring equipment (3) 6.3 Other (4) 7 calibration items and calibration methods (4) Intrinsic error 7.1 (4) 7.2 Measurement repeatability (5) 7.3 X-ray filtering effect (6) 7.4 Working lower radiation (6) Expression 8 calibration results (6) 8.1 Calibration records (6) 8.2 Calibration process results (7) 9 Recalibration interval (7) Appendix A device layout and exposure parameter setting (8) Appendix B actual peak voltage measurement principle (10) Appendix C Calibration Shape original record format (13) Appendix D calibration certificate-page format pattern (15) Measurement uncertainty inherent error in Appendix E Evaluation (17)

Introduction

This specification based JJF 1071-2010 "National Calibration Specifications writing rules" establishment. This specification reference to IEC 61676.2009 "Medical electrical equipment used in diagnostic radiology non-intrusive measurement of X-rays Ray tube voltage of dose measurement instruments ", JJG744-2004" Medical Diagnostic X-ray radiation "on the non-invasive tube Technical requirements voltmeter, JJG496-1996 "frequency high voltage divider", JJG1007-2005 "high voltage DC The method of high pressure on the relevant traceability of "on in. The specification for the first time to develop. Medical Diagnostic X-ray non-intrusive Tube voltmeter calibration specifications

1 Scope

This instruction applies to 40kV ~ 150kV Medical Diagnostic X-ray non-intrusive (also known as non-access type) tube voltage Table calibration tube voltage measurement part of the X-ray machine multifunction measuring instrument. This criterion does not apply calibration mammography X-ray tube voltage non-intrusive table. 2. References The main specification references the following documents. JJG496 frequency high voltage divider JJG744-2004 diagnostic X-ray radiation JJG1007 DC high voltage divider IEC 61676.2009 Medical electrical equipment used in diagnostic radiology non-intrusive measurement of X-ray tube voltage agents Measuring instruments (Medicalelectricalequipment-Dosimetricinstrumentsusedfornon- invasivemeasurementofX-raytubevoltageindiagnosticradiology) 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

3.1 Terms 3.1.1 X-ray tube voltage X-raytubevoltage Loading in between X-ray tube anode and cathode potential difference, also known as exposure voltage. 3.1.2 Effective range effectiverange Instrument to meet their performance requirements statement indicated value range. The maximum (minimum) value of a valid indication corresponding to the maximum range End (lowermost end). 3.1.3 Exposure time irradiationtime Prescribed method measured the duration of the irradiation X-ray machine, the radiation dose rate typically exceeds a specified level time. Also known as the irradiation time. 3.1.4 Intrinsic error intrinsicerror Under standard test conditions, the size of the measured values deviate from the reference value. 3.1.5 intervention measure invasivemeasurement To obtain an X-ray tube voltage value measured by a suitable instrument or an external high-impedance voltage divider. 3.1.6 Non-intrusive measurement of non-invasivemeasurement To obtain an X-ray tube voltage value measured by analyzing X-ray radiation emitted by the X-ray tube. 3.1.7 The maximum peak voltage maximumpeakvoltage The maximum value within a predetermined time interval of the X-ray tube voltage. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1474-2014_English be delivered?

Answer: Upon your order, we will start to translate JJF 1474-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1474-2014_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1474-2014_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.