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JJF 1459-2014 English PDF

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JJF 1459-2014: Calibration Specification for Exposure Coulometers Used in Medical Diagnostic X-ray Radiation Sources
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1459-2014	English	349	Add to Cart	3 days [Need to translate]	Calibration Specification for Exposure Coulometers Used in Medical Diagnostic X-ray Radiation Sources	Valid	JJF 1459-2014

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Basic data

Standard ID	JJF 1459-2014 (JJF1459-2014)
Description (Translated English)	Calibration Specification for Exposure Coulometers Used in Medical Diagnostic X-ray Radiation Sources
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A58
Classification of International Standard	17.240
Word Count Estimation	15,143
Date of Issue	4/21/2014
Date of Implementation	7/21/2014
Quoted Standard	JJG 744-2004; JJF 1001-2011; JJF 1035-2006
Regulation (derived from)	The State Administration of Quality Supervision, Inspection and Quarantine Notice No. 47 of 2014
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This Standard specifies the medical diagnostic X-ray tube the amount of charge (mAs) meter calibration, including intervention and inductive meter. This Standard does not apply to an inductive ammeter (clamp meter) calibration.

JJF 1459-2014: Calibration Specification for Exposure Coulometers Used in Medical Diagnostic X-ray Radiation Sources

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Calibration Specification for Exposure Coulometers Used in Medical Diagnostic X-ray Radiation Sources People's Republic of China National Metrology Technical Specifications Medical Diagnostic X-ray tube charge amount (mAs) count Calibration Specification Issued on. 2014-04-21 2014-07-21 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Medical Diagnostic X-ray tube charge amount (mAs) count Calibration Specification X-ray Focal point. the National Technical Committee of ionizing radiation metrology Drafting. Shanghai Institute of Measurement and Testing This specification commissioned the National Technical Committee is responsible for ionizing radiation measurement interpretation The main drafters of this specification. Teng Jing Jing (Shanghai Institute of Measurement and Testing) Snow (Shanghai Institute of Measurement and Testing) Dong Lin (Shanghai Institute of Measurement and Testing) Drafters participate. Chen Jianxin (Shanghai Institute of Measurement and Testing) Xu Kai (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 (1) 4 Overview (2) 5 Metrological characteristics (2) 5.1 intrinsic error (2) 5.2 nonlinear (2) 5.3 Repeatability (2) Calibration Condition 6 (2) 6.1 environmental conditions (2) 6.2 measurement standards (2) 7 calibration items and calibration methods (3) Intrinsic error 7.1 (3) 7.2 Nonlinear (3) 7.3 Repeatability (3) 8 calibration results expression (3) 9 Recalibration interval (4) Appendix A calibration record format (5) Appendix B Calibration Certificate-page content and format (6) Appendix C measurement error inherent Evaluation of Uncertainty Example (7)

Introduction

This specification tube charge amount measurement range in part by reference JJG744-2004 "Medical Diagnostic X-ray radiation" Comprehensive reference to its metrological characteristics typical indicators of various manufacturers. This specification is the first release. Medical Diagnostic X-ray tube charge amount (mAs) count Calibration Specification

1 Scope

This instruction applies to diagnostic X-ray tube charge amount (mAs) meter calibration, including intervention and inductive meter. This specification does not apply to inductive ammeter (clamp meter) calibration. 2. References This specification refers to the following documents. JJG744-2004 diagnostic X-ray radiation JJF 1001-2011 common measurement terms and definitions JJF 1035-2006 ionizing radiation measurement terms and definitions 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

The above-cited documents and defined the following terms and definitions apply to this specification. 3.1 Terms 3.1.1 radiation radiationsource Can emit or release device or substance of ionizing radiation. 3.1.2 The nominal X-ray tube current X-raytubecurrent Incident on the X-ray tube target beam current, generally indicated by the X-ray tube current of milliamps (mA). 3.1.3 (particle) fluence Ф particlefluence dN dα quotient obtained by dividing that Ф = dN/dα Where. dN --- the number of particles incident on the cross-section of the ball dα, m-2. 3.1.4 load time loadingtime Prescribed method measured the input power is applied to the anode X-ray tube time, usually in seconds (s) represented. 3.1.5 intrusive invasivetype Direct access to string a measure loop current mode measurements. 3.1.6 inductive non-intrusivetype Clamp meter head using a measure by way of measuring the induced electromotive force. 3.2 units of measurement 3.2.1 pipe name the amount of charge units. Library [Oakland], symbol. C.

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