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JJF 2046-2023 English PDF

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JJF 2046-2023: Calibration Specification for Standard Neutral Filters of Automobile Test Equipment
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JJF 2046-2023English309 Add to Cart 3 days [Need to translate] Calibration Specification for Standard Neutral Filters of Automobile Test Equipment Valid JJF 2046-2023

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Basic data

Standard ID JJF 2046-2023 (JJF2046-2023)
Description (Translated English) Calibration Specification for Standard Neutral Filters of Automobile Test Equipment
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 14,199
Date of Issue 2023-06-30
Date of Implementation 2023-12-30
Issuing agency(ies) State Administration for Market Regulation

JJF 2046-2023: Calibration Specification for Standard Neutral Filters of Automobile Test Equipment


---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 Standard Neutral Filters for Automotive Inspection Equipment Calibration specification Released on 2023-06-30 2023-12-30 implementation Released by the State Administration for Market Regulation Standard neutral for automotive testing equipment Filter Calibration Specifications Responsible Unit: National Legal Metrology Management Metrology Technology Working Committee Motor Vehicle Inspection Inspection Sub-Technical Committee Main drafting unit: Xiamen Metrology Verification and Testing Institute Jilin Institute of Metrology Jiangxi Provincial Institute of Metrology and Testing Participating in the drafting unit: Heilongjiang Metrology Verification and Testing Research Institute Anhui Institute of Metrology Gansu Provincial Institute of Metrology This specification entrusts the National Legal Metrology Management Metrology Technical Working Committee to conduct motor vehicle inspection and testing The technical committee is responsible for explaining The main drafters of this specification: Jiang Tao (Xiamen Metrology Testing Institute) Li Hongli (Jilin Institute of Metrology) Guan Rui (Jiangxi Provincial Institute of Metrology and Testing) Participating drafters: Liu Nana (Heilongjiang Provincial Institute of Metrology and Testing) Zhou Peng (Xiamen Metrology Testing Institute) Jin Peiyu (Anhui Institute of Metrology) Gao Decheng (Gansu Institute of Metrology)

Table of contents

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 terms(1) 4 Overview(2) 5 Metrological characteristics(2) 5:1 Integral transmittance(2) 5:2 The difference between front and back integral transmittance (2) 5:3 Inhomogeneity of integral transmittance (2) 6 Calibration conditions(2) 6:1 Environmental conditions (2) 6:2 Testing standards and other equipment (2) 7 Calibration Items and Calibration Methods(2) 7:1 Visual inspection (2) 7:2 Integral transmittance(2) 7:3 The difference between front and back integral transmittance (3) 7:4 Absorption ratio(3) 7:5 Inhomogeneity of integral transmittance (4) 8 Expression of Calibration Results(4) 9 Recalibration interval(4) Appendix A Calibration Certificate Inner Page Format (5) Appendix B Filter Calibration Record Format(6) Appendix C Uncertainty Assessment Example of Integral Transmittance Measurement Results (7)

Introduction

JJF 1071 "Rules for Writing National Metrology Calibration Standards", JJF 1001 "General Metrology Terms and Definitions", JJF 1059:1 "Assessment and Expression of Measurement Uncertainty" together constitute the basic series of specifications supporting the formulation of this specification: This specification mainly refers to JJG1034 "Spectrophotometer Standard Filter", and partly refers to CIE86- In:1990, it was compiled according to the technical requirements of "CIE19882° Field of View Spectral Light Effect Function": This specification is published for the first time: Standard Neutral Filters for Automotive Inspection Equipment Calibration specification

1 Scope

This specification is applicable to the standard neutrality of verification/calibration transmission smoke meter, light transmittance meter for automobile inspection and other equipment Calibration of filters:

2 References

This specification references the following documents: JJG178 UV, visible, near infrared spectrophotometer JJG1034 Spectrophotometer standard filter JJF 1032 Terms and Definitions of Optical Radiation Metrology CIE86-1990CIE19882° Field of View Photopic Spectral Light Effect Function (CIE19882° Spectral 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 following terms and definitions defined in JJF 1032 apply to this specification: 3:1 Transmittance In the spectrum (400~760)nm interval, the ratio of the transmitted luminous flux to the incident luminous flux is represented by τ: τ=ϕ ϕ0 (1) In the formula: τ---transmittance, 1; ϕ---transmitted luminous flux, lm; ϕ0---Incident luminous flux, lm: 3:2 Light absorption ratio absorption In the spectrum (400~760)nm interval, the absorbed luminous flux (the difference between the incident luminous flux and the transmitted luminous flux) The ratio to the incident luminous flux is represented by N: N=ϕ0 ϕ0 =1-τ (2) In the formula: N---light absorption ratio, 1: The corresponding function of the degree of response of the human eye to light and the wavelength is represented by V(λ):

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