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JJF 1472-2014 English PDF

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JJF 1472-2014: Calibration Specification for Process Calibrators
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Basic data

Standard ID JJF 1472-2014 (JJF1472-2014)
Description (Translated English) Calibration Specification for Process Calibrators
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A55
Classification of International Standard 17.220
Word Count Estimation 30,338
Date of Issue 8/1/2014
Date of Implementation 11/1/2014
Quoted Standard JJF 1309-2011; GB/T 13978-2008; GB/T 15637-2012; GB/T 16839.1-1997; JB/T 8622-1997; JB/T 8623-1997
Regulation (derived from) AQSIQ Notice 2014 No. 89
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This Standard applies to an output DC voltage, DC current, DC resistance, frequency, analog thermocouple, RTD analog functions, and both measure AC and DC voltage, AC-DC power supplies, DC resistance, frequency, thermocouple signal, thermal resistance sig

JJF 1472-2014: Calibration Specification for Process Calibrators

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Calibration Specification for Process Calibrators People's Republic of China National Metrology Technical Specifications Instrument calibration process calibrator specification Issued on. 2014-08-01 2014-11-01 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Instrument calibration process calibrator specification Focal point. the National Technical Committee on Electromagnetic measurement Main drafting unit. Henan Institute of Metrology Participated in the drafting unit. Shanghai Institute of Measurement and Testing Metrology hospital in Guizhou Province Changsha Heng Control Technology Co., Beijing Const Instrument Technology Co., Ltd. This specification commissioned the National Technical Committee Electromagnetic responsible for the interpretation of measurement The main drafters of this specification. Chen Qingping (Henan Institute of Metrology) Ning Liang (Henan Institute of Metrology) Secretary Zhao Yan (Henan Institute of Metrology) Maoxiao Chen (Shanghai Institute of Measurement and Testing) Drafters participate. Long wave (Guizhou Province Measurement and Testing Institute) Zhou Xinhua (Changsha Heng Control Technology Co., Ltd.) He Xin (Beijing Const Instruments Technology Co., Ltd.)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 Overview (1) 4 Metrological characteristics (2) 4.1 Output/measuring range and error limits (2) 4.2 DC current output load characteristic (2) Calibration Condition 5 (2) 5.1 environmental conditions (2) 5.2 standards and other measuring equipment (2) 6 calibration items and calibration methods (3) 6.1 calibration items (3) 6.2 Calibration method (4) 7 Calibration Results The expression (7) 8 Recalibration interval (8) Appendix A Measurement Uncertainty Example (a) (9) Appendix B Measurement Uncertainty Example (b) (12) Appendix C calibration original record format (15) Appendix D calibration certificate within the page format (p. 2) (18) Appendix E calibration certificate calibration results page format (page 3) (19) Appendix F basic error expression (22) Differential resistance and thermocouple Seebeck coefficient of thermal resistance of Appendix G (23)

Introduction

This specification based on the national measurement specifications JJF 1071-2010 "National Calibration Specifications writing rules" JJF 1059.1-2012 "Evaluation and Expression of Uncertainty in Measurement" establishment. The specification for the first time to develop. Instrument calibration process calibrator specification

1 Scope

This instruction applies to an output DC voltage, DC current, DC resistance, frequency, thermocouple analog signals, RTD analog functions, and both measure AC and DC voltage, DC current, DC resistance, frequency, Thermocouple signal, thermal resistance signal function process calibrator instrument calibration. It is also applicable to a part of the above measurements and Output function process calibrator instrument calibration. 2. References This specification refers to the following documents. JJF 1309-2011 temperature calibrator calibration specifications GB/T 13978-2008 DMM GB/T 15637-2012 General specification for digital multimeter calibrator GB/T 16839.1-1997 Thermocouples - Part 1. indexing table JB/T 8622-1997 industrial platinum RTD Technical conditions and indexing table JB/T 8623-1997 industrial copper heat resistance Technical conditions and indexing table 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 Overview

Process instrumentation for industrial production processes for monitoring, measurement and control field devices or the health of the system work meter. Process instrumentation calibrator is mainly used for instrument calibration process, its main feature is both independent signals Measuring unit and signal output unit, part of the process instrument calibrator and needed some measurements or electrical output Messages are displayed in the form of its own physical quantity (such as temperature, pressure, etc.). Process instrumentation calibrator (hereinafter referred to as "the calibrator") is the central control unit as the core digital calibrator Table, and its block diagram shown in Figure 1. Block diagram of Figure 1 process instrumentation calibrator

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