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JJG 134-2023 English PDF

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JJG 134-2023: Electromagnetic Velocity Transducers
Status: Valid

JJG 134: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 134-2023English319 Add to Cart 4 days [Need to translate] Electromagnetic Velocity Transducers Valid JJG 134-2023
JJG 134-2003English559 Add to Cart 3 days [Need to translate] Verification Regulation of Electromagnetic Velocity Transducer Obsolete JJG 134-2003
JJG 134-1987English679 Add to Cart 5 days [Need to translate] Verification Regulation of Magne-toelectric Type Velocity Transducer Obsolete JJG 134-1987

Standard similar to JJG 134-2023

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Basic data

Standard ID JJG 134-2023 (JJG134-2023)
Description (Translated English) Electromagnetic Velocity Transducers
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 15,120
Date of Issue 2023-06-30
Date of Implementation 2023-12-30
Issuing agency(ies) State Administration for Market Regulation

JJG 134-2023: Electromagnetic Velocity Transducers

---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.
National Measurement Verification Regulations of the People's Republic of China Magnetoelectric speed sensor Published on 2023-06-30 Implemented on 2023-12-30 Released by the State Administration for Market Regulation Magnetoelectric speed sensor Calibration procedures Replace JJG 134-2003 Responsible unit. National Vibration Impact Speed Measurement Technical Committee Main drafting unit. Beijing Institute of Metrology and Testing Sciences Unit participating in the drafting. Xi'an Thermal Engineering Research Institute Co., Ltd. China Institute of Metrology This regulation is entrusted to the National Vibration Impact Speed Measurement Technical Committee to be responsible for the interpretation The main drafter of this regulation. Yan Rui (Beijing Institute of Metrology and Testing Sciences) Zhang Hongyu (Beijing Institute of Metrology and Testing Sciences) Participating drafters. Zhao Qiang (Beijing Institute of Metrology and Testing Sciences) Wei Xuan (Xi'an Thermal Engineering Research Institute Co., Ltd.) Xia Yan (China Institute of Metrology)

Table of contents

Introduction(Ⅱ) 1 Scope(1) 2 Cited documents(1) 3 Overview(1) 4 Measurement performance requirements (1) 4.1 Reference speed sensitivity annual stability(1) 4.2 Frequency response(1) 4.3 Amplitude linearity(1) 5 General technical requirements (1) 5.1 Appearance and accessories(1) 5.2 Other technical requirements(1) 6 Measuring instrument control(2) 6.1 Verification conditions (2) 6.2 Verification items (2) 6.3 Calibration method (3) 6.4 Processing of verification results (5) 6.5 Calibration cycle(5) Appendix A Magnetoelectric speed sensor calibration certificate inner page format (6) Appendix B Magnetoelectric speed sensor calibration result notification inner page format (7) Appendix C Measurement method of lateral sensitivity of magnetoelectric speed sensor (8) Appendix D Measurement method of temperature response of magnetoelectric speed sensor (9)

Introduction

JJF1002 "Rules for Writing National Measurement Verification Regulations" and JJF1001 "General Metrology Terms and Definitions" are jointly composed form a basic series of specifications that support the revision of this regulation. Mainly refer to GB/T 30242-2013 "Magnetic Speed General Technical Conditions for Sensors", GB/T 20485.1-2008 "Calibration Methods for Vibration and Shock Sensors Part 1 "Basic Concepts" and other technical specifications. This regulation is revised from the JJG 134-2003 edition. Compared with JJG 134-2003, except for editorial revisions The main technical changes outside are as follows. ---Canceled the content related to type identification and prototype testing in the original regulations; ---The provisions on the frequency range of the magnetoelectric speed sensor in the original regulation have been cancelled; ---Cancel the requirement for reference speed sensitivity uncertainty in the measurement performance of the original regulations; ---Added the index and calibration method of the annual stability of the sensor reference sensitivity; ---The lateral sensitivity, temperature response, dynamic range, maximum tolerable acceleration, and Regarding insulation resistance and output resistance, the measurement method of transverse sensitivity temperature response has been moved to Appendix C and Appendix Record D; ---Modify the technical indicators that manufacturers should provide in the general technical requirements of the original regulations to other technical requirements; ---Modified the calculation formula of sensor reference speed sensitivity; ---Added the content of using the absolute method standard device for magnetoelectric speed sensor verification; ---The technical specification requirements for the standard shaking table and reference accelerometer set in the measuring instruments used for calibration have been cancelled, and the requirements have been changed. To describe the vibration standard device using the comparative method; ---The calculation method of amplitude linearity has been modified and the least squares method is used. The previous versions of this regulation are released as follows. ---JJG 134-2003; ---JJG 134-1987. Calibration procedures for magnetoelectric speed sensors

1 Scope

This procedure is applicable to the initial calibration, subsequent calibration and in-use inspection of magnetoelectric speed sensors.

2 cited documents

JJG 2054-2015 Vibration measuring instrument calibration system table GB/T 20485.1-2008 Vibration and shock sensor calibration method Part 1.Basic concepts GB/T 20485.11-2006 Calibration methods for vibration and shock sensors Part 11.Laser interference method dynamic absolute calibration GB/T 20485.21-2007 Vibration and shock sensor calibration method Part 21.Vibration comparison method calibration GB/T 30242-2013 General technical conditions for magnetoelectric speed sensors For dated references, only the dated version applies to this regulation; for undated references, only the dated version applies. The latest version (including all modification orders) shall apply to this regulation.

3 Overview

Magnetoelectric vibration speed sensor (hereinafter referred to as sensor) is mainly used for mechanical vibration measurement. It uses electromagnetic The induction principle converts vibration velocity into voltage output. Its structure mainly consists of magnetic circuit system, coil, inertial mass, It is composed of spring damping and other parts.

4 Measurement performance requirements

4.1 Reference speed sensitivity annual stability. should be better than 3%. 4.2 Frequency response. The frequency response deviation should be better than ±10%. 4.3 Amplitude linearity. should be better than ±5%.

5 General technical requirements

5.1 Appearance and accessories 5.1.1 The specification, model, factory number, and trademark should be marked on the housing of the sensor. 5.1.2 The sensor housing should have no obvious mechanical damage, and the installation surface should be free of burrs and other defects. 5.1.3 The sensor interface should be complete, intact, and connected reliably. 5.2 Other technical requirements The sensor manufacturer should provide the sensor dynamic range parameters, that is, the frequency range and the maximum measurable vibration speed, in order to and natural frequency, damping coefficient, installation angle and tolerance, and the output polarity, weight and dimensions of the sensor should be given.

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