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JJF 1873-2020 English PDF

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US$419.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1873-2020: Calibration Specification for Diesel Vehicle Nitrogen Oxides (NOx)Measuring Instruments
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1873-2020	419	Add to Cart	4 days	Calibration Specification for Diesel Vehicle Nitrogen Oxides (NOx)Measuring Instruments	Valid

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Basic data

Standard ID: JJF 1873-2020 (JJF1873-2020)
Description (Translated English): Calibration Specification for Diesel Vehicle Nitrogen Oxides (NOx)Measuring Instruments
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A61
Classification of International Standard: 17.020
Word Count Estimation: 18,119
Date of Issue: 2020-11-26
Date of Implementation: 2021-05-26
Quoted Standard: JJF 1071-2010; GB 3847-2018; GB 18285-2018
Regulation (derived from): Announcement No. 57 (2020) of the State Administration for Market Regulation
Issuing agency(ies): State Administration for Market Regulation
Summary: This standard applies to the calibration of nitrogen oxide (NOx) detectors for diesel vehicles.

JJF 1873-2020: Calibration Specification for Diesel Vehicle Nitrogen Oxides (NOx)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.
Calibration Specification for Diesel Vehicle Nitrogen Oxides (NOx)Measuring Instruments National Metrology Technical Specifications of the People's Republic of China Diesel vehicle nitrogen oxide (NOx) detector Calibration specification 2020-11-26 release 2021-05-26 implementation Issued by the State Administration for Market Regulation Diesel vehicle nitrogen oxides (NOx) Calibration specification for detector NitrogenOxides(NOx)MeasuringInstruments Focal point: National Technical Committee for Legal Metrology Management Main drafting unit: Zhejiang Institute of Metrology Heilongjiang Institute of Metrology Verification and Testing Participated in the drafting unit: Henan Institute of Metrology Tianjin Academy of Metrology Supervision and Testing Science Jilin Institute of Metrology Zhejiang Zhejiang University Mingquan Technology Co:, Ltd: This specification entrusts the National Legal Metrology Management Metrology Technical Committee to be responsible for interpretation The main drafters of this specification: Ye Zhenzhou (Zhejiang Institute of Metrology) Yan Jin (Zhejiang Institute of Metrology) Liu Nana (Heilongjiang Institute of Metrology Verification and Testing) Participating drafters: Qin Guojun (Henan Institute of Metrology) Wang Kexi (Tianjin Scientific Research Institute of Metrology Supervision and Testing) Wang Lan (Jilin Provincial Institute of Metrology) Kang Ye (Zhejiang Zhejiang University Mingquan Technology Co:, Ltd:)

Introduction (Ⅱ) 1 scope (1) 2 Reference documents (1) 3 Terms and measurement units (1) 4 Overview (1) 5 Measurement characteristics (2) 5:1 Indication error (2) 5:2 Repeatability of indication (2) 5:3 NO2-NO conversion rate (2) 5:4 Sensor response time (2) 6 Calibration conditions (2) 6:1 Environmental conditions (2) 6:2 Measurement standards and other equipment (3) 7 Calibration items and calibration methods (3) 7:1 Indication error (3) 7:2 Repeatability of indication (3) 7:3 NO2-NO conversion rate (4) 7:4 Sensor response time (5) 8 Calibration result expression (5) 9 Recalibration interval (5) Appendix A Standard Gas and Its Requirements (6) Appendix B: Conversion rate calibration method using ozone generator (7) Appendix C Format of Calibration Certificate (Inner Page) (9) Appendix D Examples of Uncertainty Evaluation of Measurement Instrument for NO, NO2, CO2 Indication Errors (10)

Introduction

This specification is based on JJF 1071-2010 "Rules for the Compilation of National Metrology and Calibration Specifications", JJF 1001-2011 "General Metrology terms and definitions", JJF 1059:1-2012 "Measuring Uncertainty Evaluation and Expression" are the basic series of specifications Make it: According to GB 3847-2018 "Diesel vehicle pollutant emission limits and measurement methods (free acceleration method and loading deceleration) Law)”, put forward relevant requirements for the detection of nitrogen oxides in diesel vehicle emissions: This specification mainly refers to GB 3847- 2018 ``Limits and Measurement Methods of Pollutant Emissions from Diesel Vehicles (Free Acceleration Method and Loading Deceleration Method)'', GB 18285- 2018 "Limits and Measurement Methods of Pollutant Emissions from Gasoline Vehicles (Dual Idle Speed Method and Simple Working Condition Method)", JJG688-2017 "Automobile Emission Gas Tester" was compiled: This specification is released for the first time: Diesel vehicle nitrogen oxide (NOx) detector Calibration specification

1 Scope

This specification applies to the calibration of nitrogen oxide (NOx) detectors for diesel vehicles:

2 Reference documents

This specification refers to the following documents: JJF 1071-2010 National Metrology and Calibration Specifications Compilation Rules GB 3847-2018 Diesel vehicle pollutant emission limits and measurement methods (free acceleration method and loading deceleration method) GB 18285-2018 Gasoline vehicle pollutant emission limits and measurement methods (dual idle speed method and simple working condition method) For dated reference documents, only the dated version applies to this specification; for undated references The latest version (including all amendments) is applicable to this specification:

3 Terms and units of measurement

The following terms and definitions defined in GB 3847-2018 apply to this specification: 3:1 Terms and definitions 3:1:1 NitrogenoxideNOx Nitrogen oxides emitted from exhaust pipes include nitric oxide (NO) and nitrogen dioxide (NO2): 3:1:2 NO2-NO conversion rate convertrateofNO2-NO When NO2 gas passes through the NO2-NO converter, the mole fraction of NO after the reaction is the same as that before the reaction The ratio of the total mole fraction of NO2, expressed as a percentage (%): 3:2 Unit of measurement The nitrogen oxide (NOx) detector for diesel vehicles adopts legal measurement units, of which: The mole fraction of CO2 is expressed as "%" or "10-2"; The mole fraction of NO and NO2 is represented by "10-6":

4 overview

The detector (hereinafter referred to as the detector) is used to measure the concentration of nitrogen oxides (NOx) in the exhaust pollutants of diesel vehicles: It is a detection instrument with CO2 concentration monitoring function: According to the measurement method, it is divided into direct measurement of NO and NO2 detection It uses a NO2-NO converter to convert NO2 into NO and then measure it: According to the measurement principle It is a detector that uses chemiluminescence for measurement, a detector that uses ultraviolet sensors for measurement, and a detector that uses infrared sensors: Detector for measuring: The detector should have the display function of NOx concentration: Mainly consists of sampling system, pretreatment device, analysis unit, Display device and main control system, etc: ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1873-2020_English be delivered?

Answer: Upon your order, we will start to translate JJF 1873-2020_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 1873-2020_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1873-2020_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.