JJF 1473-2014 English PDF

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JJF 1473-2014: Calibration Specification for Medical Diagnostic X-ray Non-invasive Current Meters
Status: Valid

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Basic data

Standard ID: JJF 1473-2014 (JJF1473-2014)
Description (Translated English): Calibration Specification for Medical Diagnostic X-ray Non-invasive Current Meters
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A58
Classification of International Standard: 17.240
Word Count Estimation: 15,117
Date of Issue: 8/25/2014
Date of Implementation: 11/25/2014
Quoted Standard: JJG 598; JJG 744; JJF 1075
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 non-invasive medical diagnostic X-ray current device, as well as non-intrusive current timetable and versatile X-ray detector calibration of X-ray tube current measuring section.

JJF 1473-2014: Calibration Specification for Medical Diagnostic X-ray Non-invasive Current 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.
Calibration Specification for Medical Diagnostic X-ray Non-invasive Current Meters People's Republic of China National Metrology Technical Specifications Non-invasive medical diagnostic X-ray current instrument Calibration Specification Issued on. 2014-08-25 2014-11-25 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Non-invasive medical diagnostic X-ray current instrument Calibration Specification Focal point. the National Technical Committee of ionizing radiation metrology The main drafting units. China Testing Technology Research Institute Shanghai Measurement and Testing Technology Research Institute Participated in the drafting. Shenzhen Academy of Metrology and Quality Inspection Hebei Institute of Measurement Science Fujian Institute of Metrology This specification commissioned the National Technical Committee is responsible for ionizing radiation measurement interpretation The main drafters of this specification. Zhang from China (China Testing Technology Research Institute) Liu Zhihong (China Testing Technology Research Institute) Chen Jianxin (Shanghai Institute of Measurement and Testing) Drafters participate. Li Peng (China Testing Technology Research Institute) Zhou Yingchun (Shenzhen Academy of Metrology and Quality Inspection) Caizong Lin (Hebei Science Institute of Measurement) Chen Weihuang (Fujian Institute of Metrology)

table of Contents

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 (1) 4 Overview (1) 5 Metrological characteristics (1) 5.1 Current Range (1) 5.2 Current Resolution (2) 5.3 Indication error (2) 5.4 tilt effect (2) 5.5 Repeatability (2) Calibration Condition 6 (2) 6.1 environmental conditions (2) 6.2 standards and other measuring equipment (2) 7 Calibration methods and calibration items (2) 7.1 Current Resolution (2) 7.2 Indication error (2) 7.3 tilt effect (3) 7.4 Repeatability (3) 8 calibration results expression (3) 9 Recalibration time intervals (3) Appendix A current meter connection instructions (4) Appendix B non-invasive medical diagnostic X-ray calibration current original records (recommended) formatting styles (5) Appendix C calibration certificate within the page (recommended) formatting styles (7) Uncertainty Evaluation Examples Appendix D shows the current value of error measurement results (8)

Introduction

This specification based JJF 1001-2011 "common measurement terms and definitions", JJF 1059.1-2012 "measurement is not Determine the evaluation and expression ", JJF 1071-2010" National Calibration Specifications writing rules "establishment. For non-invasive medical diagnostic X-ray apparatus of the current situation, the development of this specification reference JJF 1075- 2001 "clamp meter calibration norms" and JJG598-1989 "DC digital ammeter (Trial)." The specification for the first time to develop. Non-invasive medical diagnostic X-ray calibration current specification

1 Scope

This instruction applies to non-invasive medical diagnostic X-ray current device, as well as non-intrusive current timetable and versatile X Calibration X-ray tube current measuring section ray detector. 2. References This specification refers to the following documents. JJG598 DC digital ammeter (Trial) JJG744 diagnostic X-ray radiation JJF 1075 clamp meter calibration specification 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 current X-raytubecurrent Current electron beam against the X-ray tube target surface. [IEC 60601-1-3.2008,3.85] 3.1.2 Non-intrusive measurement of non-invasivemeasurement Obtain measurements of X-ray tube current values by measuring the non-access current probe signal. 3.1.3 intervention measure invasivemeasurement To obtain an X-ray tube current values measured by access to appropriate current instrument. 3.1.4 Non-intrusive current probe non-invasivecurrentprobe Referred to the probe, used as probe clamp meter, using electromagnetic induction principle, measure the current signal. 3.2 units of measurement Title X-ray tube current unit. mA; symbol. mA.

4 Overview

Medical Diagnostic X-ray non-intrusive current device (hereinafter referred to as the current instrument) is a non-invasive way to measure the use of X-rays Ray machine tube current instrument for measuring the X-ray exposure of the current machine. Current meter according to the principle of electromagnetic induction to detect Exposure tube current signal induced current signal acquisition and processing, calculation of the current value. Current instrument is mainly handled by the probe signal Means for processing terminals and other components.

5 Metrological characteristics

5.1 Current Range ......

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