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JJF 1491-2014 English PDF

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JJF 1491-2014: Calibration Specification for Digital AC Electrical Parameters Meter
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Basic data

Standard ID JJF 1491-2014 (JJF1491-2014)
Description (Translated English) Calibration Specification for Digital AC Electrical Parameters Meter
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A55
Classification of International Standard 17.220
Word Count Estimation 23,280
Date of Issue 11/17/2014
Date of Implementation 2/17/2015
Quoted Standard JJG 780-1992; GB/T 13978-2008
Regulation (derived from) The State Administration of Quality Supervision, Inspection and Quarantine Notice 2014 No. 125
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This Standard applies to the input signal frequency range of 40Hz ~ 1kHz Digital AC parameter measurement instrument, the calibration parameters of the AC portion of the digital display multi-function measuring instrument.

JJF 1491-2014: Calibration Specification for Digital AC Electrical Parameters Meter

---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 Digital AC Electrical Parameters Meter People's Republic of China National Metrology Technical Specifications Digital AC parameter measurement instrument calibration specification Issued on. 2014-11-17 2015-02-17 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Digital AC parameter measurement instrument Calibration Specification Focal point. the National Technical Committee on Electromagnetic measurement Drafting. Beijing Institute of Metrology detection Zhejiang Institute of Metrology Shandong Province Institute of Metrology This specification commissioned the National Technical Committee Electromagnetic responsible for the interpretation of measurement Drafters of this specification. Gu Yang (Beijing Institute of Metrology detection) Zheng Mengxia (Zhejiang Institute of Metrology) Ma Xuefeng (Shandong Province Institute of Metrology) Huang Yan (Beijing Institute of Metrology detection) Chen Zhiming (Zhejiang Institute of Metrology) Lidao Min (Shandong Province Institute of Metrology) Song Nan (Beijing Institute of Metrology detection)

table of Contents

Introduction Ⅱ 1 Scope 1 2. References 1 3 1 Overview 4 Metrological characteristics 1 5 2 calibration conditions Environmental Conditions 2 5.1 5.2 Measurement standards and other equipment 2 6 Calibration and Calibration Method 2 project 6.1 Calibration Item 2 6.2 Calibration Method 3 7 Expression 9 calibration results 8 recalibration interval 9 Appendix A Measurement Uncertainty Example 10 12 Appendix B Calibration original record format Appendix C in the calibration certificate page format (page 2) 14 Appendix D calibration certificate calibration results page format (page 3) 15 Appendix E AC power supply load method calibration error indication 16 Appendix F indication error expression 17

Introduction

This specification based on the national measurement specifications JJF 1071-2010 "National Calibration Specifications writing rules" JJF 1001-2011 "common measurement terms and definitions", JJF 1059.1-2012 "Measurement Uncertainty Table Show "establishment. The specification for the first time to develop. Digital AC parameter measurement instrument calibration specification

1 Scope

This standard applies to the input signal frequency range of 40Hz ~ 1kHz Digital AC parameter measurement instrument (with AC calibration parameters portion hereinafter referred to as meter), digital display multi-function measuring instrument. 2. References This specification refers to the following documents. JJG780-1992 AC Digital Power Meter GB/T 13978-2008 DMM 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

Digital AC parameter measurement instrument is used to measure voltage, current, power, power factor (phase), frequency And other electrical equipment. Widely used in electrical products, quality control, power line monitoring system, electrical parameter index The measurement. Electrical parameter measuring instrument block diagram shown in Figure 1, consists of sensors, signal conditioning circuitry, analog to digital conversion , A control unit, a communication interface and display components. An electrical block diagram parameter measuring instrument Fig.

4 Metrological characteristics

Indication error of measuring instruments AC voltage, AC current, AC power, frequency, power factor, phase by attaching Record F calculation, measurement range and the maximum permissible error in Table 1.

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