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JJF 2045-2023 English PDF

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US$379.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 2045-2023: Calibration Specification for Calibrators of Motor Vehicle Engine Speed Measuring Instruments
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 2045-2023	379	Add to Cart	4 days	Calibration Specification for Calibrators of Motor Vehicle Engine Speed Measuring Instruments	Valid

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Basic data

Standard ID: JJF 2045-2023 (JJF2045-2023)
Description (Translated English): Calibration Specification for Calibrators of Motor Vehicle Engine Speed Measuring Instruments
Sector / Industry: Metrology & Measurement Industry Standard
Word Count Estimation: 17,154
Date of Issue: 2023-06-30
Date of Implementation: 2023-12-30
Issuing agency(ies): State Administration for Market Regulation

JJF 2045-2023: Calibration Specification for Calibrators of Motor Vehicle Engine Speed Measuring Instruments

---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 Metrology Technical Specifications of the People's Republic of China Motor vehicle engine speed measuring instrument Calibration device calibration specification Released on 2023-06-30 2023-12-30 implementation Released by the State Administration for Market Regulation Motor vehicle engine speed measuring instrument Calibration device calibration specification Responsible unit: Motor Vehicle Inspection and Inspection of National Legal Metrology Management Metrology Technical Committee Scoring Technical Committee Main drafting unit:Shandong Provincial Institute of Metrology Gansu Provincial Institute of Metrology Participating in the drafting unit: Jilin Provincial Institute of Metrology Zhejiang Institute of Metrology Hebei Zhengling Technology Co:, Ltd: This specification entrusts the National Legal Metrology Management Metrology Technical Committee for motor vehicle inspection and testing sub-technology committee responsible for explaining The main drafters of this specification: Ma Xiao (Shandong Institute of Metrology) Sun Yong (Shandong Institute of Metrology) Gao Decheng (Gansu Institute of Metrology) Participating drafters: Wang Lan (Jilin Institute of Metrology) Zhao Cunbin (Zhejiang Institute of Metrology) Liu Wei (Shandong Institute of Metrology) Zhang Jianfeng (Hebei Zhengling Technology Co:, Ltd:)

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 terms(1) 4 Overview(2) 5 Metrological characteristics(2) 5:1 Measuring range(2) 5:2 Speed indication error (2) 5:3 Stability of speed indication(2) 6 Calibration conditions(2) 6:1 Environmental conditions (2) 6:2 Measuring standards and other equipment(2) 7 Calibration Items and Calibration Methods(3) 7:1 Measuring range and speed indication error (3) 7:2 Stability of rotational speed indication (5) 8 Expression of Calibration Results(5) 9 Recalibration interval(5) Appendix A Correspondence between signal frequency and engine speed reference (6) Appendix B Calibration Certificate Contents(7) Appendix C Calibration Record Format of Motor Vehicle Engine Speed Meter Calibration Device Calibration (8) Appendix D Example of Uncertainty Assessment of Speed Indication Error Measurement Results of Tachometer Calibration Device (9)

Introduction

This specification is based on JJF 1071-2010 "National Measurement and Calibration Specification Writing Rules", JJF 1001-2011 "General Measurement Terms and Definitions", JJF 1059:1-2012 "Assessment and Expression of Measurement Uncertainty" are the basic series of specifications Make it: This specification mainly refers to JJG602-2014 "Low Frequency Signal Generator", JJG298-2015 "Standard Vibration "Taiwan", JJG277-2017 "Standard Sound Source", and partially refer to JJF 1375 "Motor Vehicle Engine Speed Measuring Instrument The technical requirements of Calibration Specifications are compiled: This specification is published for the first time: Motor vehicle engine speed measuring instrument Calibration device calibration specification

1 Scope

This specification is applicable to the calibration device of motor vehicle engine speed measuring instrument capable of simulating engine speed related signals (hereinafter referred to as tachometer calibration device) calibration:

2 References

This specification references the following documents: JJG277 standard sound source JJG298 Standard Vibration Table JJG602 low frequency signal generator JJF 1375 Motor vehicle engine speed measuring instrument calibration specification For dated references, only the dated version applies to this specification; for undated references document, its latest version (including all amendments) applies to this specification:

3 terms

The terms defined in JJF 1375 and below apply to this specification: The signal generated by the tachometer calibration device, which is used to simulate the ignition of the car's cigarette lighter or battery with the engine Signal related voltage ripple signal: The signal generated by the tachometer calibration device is used to simulate the connection between the car cigarette lighter or the battery and the car generator Voltage pulsation signal related to battery charging: The signal generated by the tachometer calibration device, which is used to simulate the high-voltage ignition pulse of the ignition coil of the ignition engine Chong signal: The signals generated by the tachometer calibration device usually include high-pressure fuel injection vibration signals, engine block vibration signals and Engine block shock signal: The vibration signal of high-pressure fuel injection refers to the vibration emitted from the analog port of the fuel injection pipe of the tachometer calibration device The signal simulates the vibration of the compression ignition engine during high-pressure fuel injection; the vibration signal of the engine cylinder refers to the tachometer calibration device driving The vibration signal sent by the dynamic vibration table simulates the vibration of the engine; the impact signal of the engine cylinder refers to the tachometer calibration device ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 2045-2023_English be delivered?

Answer: Upon your order, we will start to translate JJF 2045-2023_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 2045-2023_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 2045-2023_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.