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JJG 105-2019 English PDF

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JJG 105-2019: Tachometers
Status: Valid

JJG 105: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 105-2019English349 Add to Cart 3 days [Need to translate] Tachometers Valid JJG 105-2019
JJG 105-2000English719 Add to Cart 3 days [Need to translate] Verification regulation of tachometer Obsolete JJG 105-2000
JJG 105-1983EnglishRFQ ASK 3 days [Need to translate] (Chinese Industry Standard) Obsolete JJG 105-1983

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Basic data

Standard ID JJG 105-2019 (JJG105-2019)
Description (Translated English) Tachometers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Classification of International Standard 17.080
Word Count Estimation 15,159
Date of Issue 2019
Date of Implementation 2020-03-31
Issuing agency(ies) State Administration for Market Regulation

JJG 105-2019: Tachometers

---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.
Tachometers National Measurement Verification Regulations of the People's Republic of China Tachometer Published on December 31,.2019 2020-03-31 Implementation Issued by the State Administration of Market Supervision and Administration Verification Regulation of Tachometer Replace JJG 105-2000 Centralized unit. National Technical Committee for Vibration Impact Speed Measurement Main drafting unit. China Academy of Metrology Participated in the drafting unit. Beijing Academy of Metrology and Testing Science Jiangxi Metrology and Testing Institute Shanxi Institute of Metrology Beijing Yimet Technology Co., Ltd. This regulation is entrusted to the National Technical Committee for Vibration Impact Speed Measurement to explain The main drafters of this regulation. Sun Qiao (Chinese Academy of Metrology) Bai Jie (Chinese Academy of Metrology) Participating drafters. Yu Baoliang (Beijing Institute of Metrology and Testing Science) Qiqi Yang (Jiangxi Metrology and Testing Institute) Bai Min (Shanxi Institute of Metrology) Du Lei (Chinese Academy of Metrology) Chen Jinfa (Beijing Imtech Technology Co., Ltd.)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2 References (1) 3 Terms and units of measurement (1) 3.1 Tachometer (1) 3.2 Speed ratio (1) 3.3 Indication variability (1) 4 Overview (1) 5 Measurement performance requirements (1) 6 General technical requirements (2) 6.1 Appearance requirements (2) 6.2 Other technical requirements (2) 7 Control of measuring instruments (2) 7.1 Verification conditions (2) 7.2 Verification items (3) 7.3 Verification method (3) 7.4 Processing of verification results (5) 7.5 Verification period (5) Appendix A Tachometer Verification Record (Recommended) Format (6) Appendix B. Internal page format of tachometer verification certificate (7) Appendix C Format of the inner pages of the notice of verification results (10)

Introduction

This regulation is based on JJF1002-2010 "Rules for Compiling National Measurement Verification Regulations", JJF1001-2011 "Tong Using measurement terms and definitions and other measurement specifications, combined with the actual use of the tachometer in my country, the JJG 105- The revision in.2000 is a technical guarantee for the effective traceability of the speed value. Compared with JJG 105-2000, the main technical amendments of this regulation are as follows. --- Increased the introduction, scope, reference documents; --- Adjusted the definitions of the terms "tachometer" "speed ratio" and "indicative value variability"; --- Delete the definition of the remaining terms; --- Adjusted the classification of the tachometer, not according to the working principle, but according to the measurement method and display method classification; --- Adjusted the grading of the tachometer, does not retain 0.01, 0.02, 0.2, 1.5, 2.5 levels; --- Removed the requirements of "± 1 word" and "± 2 words" in the measurement performance requirements; --- Adjusted the general technical requirements; --- Adjusted the content of control of measuring instruments; --- Clarify the handling of verification results; --- Added Appendix A verification record (recommended) format; --- Added Appendix B verification certificate internal page format; --- Added the format of the inner page of the notice of verification results in Appendix C. The previous releases of this regulation are. --- JJG 105-2000; --- JJG 105-1983; JJG 328-1983; JJG 329-1983; JJG 327-1983. Verification Regulation of Tachometer

1 Scope

This regulation is applicable to the first verification and subsequent verification of the 0.05, 0.1, 0.5, 1 and 2 tachometers And check in use.

2 Reference documents

This regulation refers to the following documents. JJG 326 speed standard device For dated references, only the dated versions are applicable to this Regulation; for those without dates The latest version (including all amendments) is applicable to this regulation.

3 Terms and units of measurement

3.1 tachometer Instrument for measuring the rotating speed of various rotating objects. The unit of measurement for speed is revolutions per minute, r/min. 3.2 Rotational speed ratio The ratio of the actual speed value measured by the tachometer to the scale value of the tachometer. 3.3 indication variation Under the condition that the measured rotating object and the measurement state are not changed, the same measured rotation speed is measured multiple times. Repeat reading, the maximum amount of change in its indication.

4 Overview

The tachometer is used to measure the rotation speed of various rotating objects. According to its working principle, it mainly includes the following types. centrifugal Tachometer, timing tachometer, magnetoelectric tachometer, eddy current tachometer, hall tachometer, strobe speed Table, photoelectric tachometer, etc. The measurement method of the tachometer can usually be divided into contact type and non-contact type, and the speed indication value The display mode can usually be divided into pointer and digital. In order to facilitate the measurement performance requirements and the regulation of measurement instrument control Fan unified, this regulation classifies the tachometers with different working principles according to the measurement method and display method. Among them, many The tachometer has two measurement methods. contact and non-contact.

5 Measurement performance requirements

The measurement performance requirements of the non-contact tachometer are shown in Table 1, and the measurement performance requirements of the contact tachometer are shown in Table 2.

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