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JJG 603-2018 English PDF

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JJG 603-2018: Frequency Meters
Status: Valid

JJG 603: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 603-2018English419 Add to Cart 4 days [Need to translate] Frequency Meters Valid JJG 603-2018
JJG 603-2006English519 Add to Cart 3 days [Need to translate] Verification Regulation of Frequency Meters Obsolete JJG 603-2006
JJG 603-1989English319 Add to Cart 3 days [Need to translate] Frequency Meter Used Indicator Obsolete JJG 603-1989

PDF similar to JJG 603-2018


Standard similar to JJG 603-2018

GB/T 3222.1   JJG 188   JJF 1396   JJG 802   JJG 488   JJG 238   

Basic data

Standard ID JJG 603-2018 (JJG603-2018)
Description (Translated English) Frequency Meters
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A57
Word Count Estimation 18,115
Date of Issue 2018-12-25
Date of Implementation 2019-06-25
Older Standard (superseded by this standard) JJG 603-2006
Regulation (derived from) State Administration of Markets, Announcement No. 34 of 2018
Issuing agency(ies) State Administration for Market Regulation

JJG 603-2018: Frequency 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.
(Frequency table verification procedure) National Metrology Verification Regulations of the People's Republic Frequency table FrequencyMeters Published on.2018-12-25 2019-06-25 implementation State Market Supervisory Administration released Frequency table verification procedure FrequencyMeters Replace JJG 603-2006 Focal Point. National Time Frequency Measurement Technical Committee Main drafting unit. Wenzhou Institute of Metrology and Technology Shanghai Institute of Metrology and Testing Technology Zhengzhou City Quality and Technical Supervision, Inspection and Testing Center Participated in the drafting unit. Zhejiang Zhengtai Instrument and Meter Co., Ltd. This procedure entrusts the National Time Frequency Measurement Technical Committee to explain The main drafters of this procedure. Zhou Xiaohua (Wenzhou Metrology and Technology Research Institute) Dong Lian (Shanghai Institute of Metrology and Testing Technology) Ke Cunrong (Zhengzhou City Quality and Technology Supervision, Inspection and Testing Center) Participate in the drafters. Chen Shaojun (Wenzhou Institute of Metrology and Technology) Ding Zhen (Zhejiang Zhengtai Instrument and Meter Co., Ltd.)

table of Contents

Introduction (II) 1 Scope (1) 2 References (1) 3 Overview (1) 4 Metrology performance requirements (1) 4.1 pointer frequency meter (1) 4.2 Digital Display Frequency Meter (2) 5 General technical requirements (2) 5.1 Appearance (2) 5.2 Insulation resistance (2) 6 measuring instrument control (2) 6.1 Verification conditions (2) 6.2 Verification project (3) 6.3 Verification method (3) 6.4 Processing of verification results (5) 6.5 verification period (5) Appendix A Frequency Table Verification Certificate/Verification Result Notice Page Format (6) Appendix B Pointer Frequency Table Verification Certificate Verification Result Page Format (7) Appendix C Digital Explicit Frequency Meter Verification Certificate Verification Result Page Format (8) Appendix D Pointer Frequency Table Verification Result Notice Verification Result Page Format (9) Appendix E Digital Explicit Frequency Meter Verification Result Notice Verification Result Page Format (10) Appendix F Pointer Frequency Table Verification Original Record Data Page Format (11) Appendix G Digital Explicit Frequency Meter Verification of Original Record Data Page Format (12)

Introduction

This procedure is based on JJF1002-2010 "Rules for the preparation of national metrological verification procedures." This regulation refers to GB/T 7676.4-2017 "Direct acting simulation indicator electric measuring instrument and its accessories Part 4. Special requirements for frequency meters", GB/T 22264.4-2008 "Installed digital display electrical measuring instruments Part 4. Special Requirements for Frequency Tables and other standards, revised the JJG 603-2006 Frequency Table. versus Compared with JJG 603-2006, in addition to editorial changes, the main technical changes are as follows. ---Adjusted the frequency measurement range and deleted the terminology; --- Add introductions, reference documents; ---Delete the measurement range, input voltage, lifting and variability check items of the pointer frequency meter, increase the deviation from zero Bit, insulation resistance verification project and verification method; ---Proposed the accuracy level of the digital display frequency meter, delete the measurement range, input voltage verification items, increase Insulation resistance verification project and verification method; --- Increase the equipment for verification and propose a new verification method; --- Increase the format of the original record data page. The previous versions of this procedure are released as follows. ---JJG 603-2006; ---JJG 603-1989; ---JJG 509-1987. Frequency table verification procedure

1 Scope

This procedure is applicable to pointer frequency meters and digital frequency meters with frequency measurement range of 10Hz~10kHz. First verification, follow-up verification and in-use inspection.

2 reference files

This procedure refers to the following documents. GB/T 7676.4-2017 Direct acting analogue indicating electrical measuring instruments and their accessories - Part 4. Special requirements GB/T 22264.4-2008 Mounting digital display electrical measuring instruments - Part 4. Particular Claim For dated references, only the dated version applies to this Code; any undated quotation The latest version (including all amendments) applies to this procedure.

3 Overview

The basic function of the frequency meter is to measure the frequency of the AC circuit, which is divided into a pointer frequency meter and a digital display frequency meter. The pointer frequency meter is based on the principle of electromagnetic deflection, using an electric system ratio meter structure or by a conversion circuit and a magnetoelectric system meter composition. The digital display frequency meter is a frequency at which the logic circuit accumulates the number of oscillations of the input signal to be tested in a standard time. measuring.

4 Metrology performance requirements

4.1 pointer frequency meter 4.1.1 Basic error The basic error of the frequency meter shall be on all the index lines within the scale measurement range and shall not exceed the maximum allowable limit specified in Table 1. Error (reference error). Table 1 Frequency table accuracy level and maximum allowable error Accuracy level 0.05 0.1 0.15 0.2 0.3 0.5 Maximum allowable error /% ±0.05 ±0.1 ±0.15 ±0.2 ±0.3 ±0.5 Accuracy level 1 1.5 2 2.5 5 --- Maximum allowable error /% ±1 ±1.5 ±2 ±2.5 ±5 --- Note. The basic error is called basic uncertainty in GB/T 7676.4-2017. 4.1.2 Deviation from zero For a frequency meter with a zero-division line on the scale, the power-off deviation from the zero test shall be performed. Hundreds of scale length The score indicates that the indicator deviates from the zero-division line by no more than 50% of the maximum allowable error.

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