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JJF 1918-2021 English PDF

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US$399.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1918-2021: (Calibration Specification for Capacitive Acceleration Sensor)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1918-2021	399	Add to Cart	4 days	(Calibration Specification for Capacitive Acceleration Sensor)	Valid

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Basic data

Standard ID: JJF 1918-2021 (JJF1918-2021)
Description (Translated English): (Calibration Specification for Capacitive Acceleration Sensor)
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A53
Word Count Estimation: 20,247
Issuing agency(ies): State Administration for Market Regulation

JJF 1918-2021: (Calibration Specification for Capacitive Acceleration Sensor)

---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 Capacitive Acceleration Sensor) National Metrology Technical Specification of the People's Republic of China Calibration Specification for Capacitive Accelerometers Published on 2021-07-28 2022-01-28 Implementation Released by the State Administration for Market Regulation Calibration Specification for Capacitive Accelerometers Focal Point. National Technical Committee of Vibration and Shock Speed Measurement Main drafting unit. Jilin Institute of Metrology China Institute of Metrology The Fifth Institute of Electronics, Ministry of Industry and Information Technology Participating in the drafting unit. Hunan Institute of Metrology and Testing Beijing Lingxin Zhiyuan Technology Co., Ltd. This specification entrusts the National Technical Committee of Vibration and Shock Speed Measurement to be responsible for the interpretation The main drafters of this specification. Yan Youyu (Jilin Institute of Metrology) Fang Facheng (Jilin Institute of Metrology) Zuo Aibin (China Institute of Metrology) Zheng Shuli (The Fifth Institute of Electronics, Ministry of Industry and Information Technology) Participating drafters. Liu Yun (Jilin Institute of Metrology) Chen Hongjiang (Hunan Institute of Metrology and Inspection) Liu Jifei (Beijing Lingxin Zhiyuan Technology Co., Ltd.)

content

Introduction (Ⅱ) 1 Scope(1) 2 References (1) 3 Overview(1) 4 Metrology Characteristics(1) 4.1 Static characteristics(1) 4.2 Dynamic Characteristics(1) 5 Calibration Conditions(2) 5.1 Environmental conditions (2) 5.2 Measurement standards and other equipment(2) 6 Calibration items and calibration methods (2) 6.1 Calibration items (2) 6.2 Calibration method(2) 7 Expression of calibration results (7) 7.1 Calibration records (7) 7.2 Calibration certificate(7) 8 Recalibration interval(7) Appendix A Determination of Local Gravitational Acceleration (8) Appendix B Recommended Format for Calibration Raw Records(9) Appendix C Calibration Certificate Contents and Inner Page Format (11) Appendix D Example of Static Sensitivity Measurement Uncertainty Evaluation of Capacitive Accelerometers(13)

Introduction

This specification is prepared in accordance with JJF 1071-2010 "Rules for Compilation of National Metrology and Calibration Specifications". JJF 1071 "Country Rules for Writing Metrological Calibration Specifications, JJF 1001 "General Metrology Terms and Definitions" and JJF 1059.1 "Inaccurate Measurements" "Sentimental Evaluation and Representation" together constitute the basic series of specifications supporting the formulation of this specification. This specification is published for the first time. Calibration Specification for Capacitive Accelerometers

1 Scope

This specification applies to the calibration of capacitive acceleration sensors (hereinafter referred to as accelerometers).

2 Reference documents

This specification references the following documents. JJG2054-2015 Vibration measuring instrument verification system table JJF 1156-2006 Terms and Definitions of Vibration Shock Speed Measurement GB/T 20485.11-2006 Vibration and shock sensor calibration method Part 11.Laser interferometry vibration Dynamic absolute calibration GB/T 20485.16-2018 Vibration and shock sensor calibration method Part 16.Earth gravity method calibration GB/T 20485.21-2007 Vibration and shock sensor calibration method Part 21.Vibration comparison method calibration IEC 60747-14-4.2011 Semiconductor devices Discrete devices Part 14-4.Semiconductor inductors (Semi- For dated references, only the dated version applies to this specification; for undated references The latest version (including all amendments) applies to this specification.

3 Overview

Capacitive accelerometers are widely used for vibration and shock measurements. The structure of capacitive acceleration sensor generally adopts a spring mass system, which consists of a fixed mass block and a sensitive mass block. to form a plate capacitor. The mass block is moved by the inertial force to change the capacitance value of the plate. By detecting large changes in capacitance Small, measure the magnitude and direction of the sensitive axis acceleration.

4 Metrology characteristics

4.1 Static characteristics Static sensitivity. 4.2 Dynamic Characteristics a) reference sensitivity; b) Sensitivity frequency response; c) Sensitivity amplitude linearity. ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1918-2021_English be delivered?

Answer: Upon your order, we will start to translate JJF 1918-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1918-2021_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1918-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.