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JJG 211-2021 English PDF

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Upon your order, we will start to translate JJG 211-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

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Q: Should I purchase the latest version JJG 211-2021?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 211-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$769.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 211-2021: Verification Regulation of Luminance Meters
Status: Valid

JJG 211: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 211-2021	769	Add to Cart	6 days	Verification Regulation of Luminance Meters	Valid
JJG 211-2005	959	Add to Cart	5 days	Verification Regulation of Luminance Meter	Obsolete
JJG 211-1989	439	Add to Cart	4 days	Verification Regulation of Luminance Meter	Obsolete
JJG 211-1980	RFQ	ASK	3 days	(Chinese Industry Standard)	Obsolete

Similar standards

JJG 178 JJG 245 JJG 810 JJG 512 JJG 452 JJG 920

Basic data

Standard ID: JJG 211-2021 (JJG211-2021)
Description (Translated English): Verification Regulation of Luminance Meters
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A60
Classification of International Standard: 17.180
Word Count Estimation: 35,353
Date of Issue: 2021-12-08
Date of Implementation: 2022-06-08
Issuing agency(ies): State Administration for Market Regulation
Summary: This standard applies to the initial verification, subsequent verification and in-use inspection of luminance meters (including color luminance meters).

JJG 211-2021: Verification Regulation of Luminance Meters

---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 Verification Regulations of the People's Republic of China Brightness meter Luminance Meters Released on 2021-12-08 2022-06-08 Implementation Released by the State Administration for Market Regulation Luminance Meter Verification Regulations Luminance Meters Replace JJG 211-2005 Responsible unit: National Optical Metrology Technical Committee Main drafting unit: China Institute of Metrology China Institute of Testing Technology Participating in the drafting unit: Zhejiang Institute of Metrology Shaanxi Institute of Metrology This regulation entrusts the National Optical Metrology Technical Committee to be responsible for interpretation The main drafters of this regulation: Jiang Xiaomei (National Institute of Metrology) Su Changlin (China Academy of Testing Technology) Lu Liang (National Institute of Metrology) Participating drafters: Ma Yao (Zhejiang Institute of Metrology) Li Yi (Shaanxi Institute of Metrology) Ruoduan Sun (National Institute of Metrology, China)

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 Overview(1) 4 Metrological performance requirements (1) 5 General technical requirements (2) 5:1 Appearance(2) 5:2 Color matching(2) 6 Measuring Instrument Control(2) 6:1 Test conditions (2) 6:2 Verification items (3) 6:3 Verification method (4) 6:4 Processing of verification results (10) 6:5 Verification cycle (10) Appendix A Recommended Format of Verification Original Records (11) Appendix B Recommended format for the inside pages of the test certificate and test result notification (16) Appendix C Example of Assessment of Measurement Uncertainty (18) Appendix D Characteristic Parameters of Transmissive Standard Swatches (29)

Introduction

JJF1002 "Rules for Writing National Metrology Verification Regulations", JJF1001 "General Metrology Terms and Definitions", JJF1059:1 "Evaluation and Expression of Measurement Uncertainty", JJF1032 "Terms and Definitions of Optical Radiation Metrology" Together they constitute the basic series of norms that support the revision of this regulation: This regulation is based on ISO /CIE19476:2014 "Characterization Methods for Illuminance Meters and Luminance Meters": JJG 211-2005 was revised: Compared with JJG 211-2005, the main technical changes except editorial modifications are as follows: ---Changed the reference file; --- Deleted the term; --- Simplified overview; ---In the verification project, referring to ISO /CIE19476:2014, the stability is deleted, and the feasibility is considered The variation of the color calibration coefficient is dropped, the non-uniformity response error for the image luminance meter is increased, and the metering performance is required: The increase or decrease of the corresponding index was carried out in the request; ---In environmental conditions, the relative humidity is less than 85% and the relative humidity is less than 70%; --- Increased the description of the verification equipment and verification methods of the brightness source method; --- In the original standard lamp whiteboard method, the method of verifying the shading cylinder luminance meter is changed from the original method using the standard transmission whiteboard The luminance value calculated by transmittance is changed to the comparative measurement method using a standard luminance meter, and the original standard lamp whiteboard method is removed: Relevant content of standard reflective swatches and rising color temperature swatches: ---Refer to 5:2, 5:7, 5:9, 5:15, 5:16 in ISO /CIE19476:2014, modify the reference in 6:3 Description of verification methods for linearity error, shifting error, fatigue error, measurement distance characteristics, and visual matching error; --- Added the recommended format of the original record of the luminance meter verification in Appendix A; ---Modified the recommended format of the inner pages of the luminance meter verification certificate and verification result notification in Appendix B; ---Modified Appendix C Measurement Uncertainty Evaluation Example; ---Deleted the CIE1931 standard chromaticity observer color matching function in the original appendix: The previous releases of this regulation are as follows: ---JJG 211-2005; ---JJG 211-1989: Luminance Meter Verification Regulations

1 Scope

This regulation applies to the initial verification, subsequent verification and in-use inspection of luminance meters (including color luminance meters):

2 References

This procedure references the following documents: For dated references, only the dated version applies to this regulation; for undated references document, its latest version (including all amendments) applies to this regulation:

3 Overview

A luminance meter is an instrument for measuring luminance, and a color luminance meter also has the function of measuring the target chromaticity: Brightness meter Widely used in display screens, electric light sources, lighting engineering, transportation, aerospace, film and television and other fields: brightness According to the type of viewfinder light path, the meter can be divided into imaging luminance meter and shading cylinder luminance meter, and the imaging luminance meter also includes aiming Point type and image type; according to the sampling method, it can be divided into spectral spectrophotometric luminance meter and filter photoelectric integral luminance meter; measurement Among the functions, a luminance meter with color measurement function is called a color luminance meter: The working principle of the luminance meter is to obtain a specified field of view through a set of optical systems that determine the viewing angle of the instrument and measure the field of view The light signal of the target is measured by the photodetector combined with the photoelectric conversion circuit to measure the brightness of the target in the field of view: value: If the chromaticity correction filter or spectroscopic element is integrated in the structure, the target chromaticity or spectrum of the field of view can also be achieved: Measurement:

4 Metering performance requirements

The luminance meter is divided into three levels: standard level, first level and second level: The measurement performance of the luminance meter at each level should meet the requirements in Table 1: Require: Table 1 Metering performance requirements level brightness Indication error Chroma(x,y) Indication error linear error shift gears error fatigue error Inhomogeneity response error Measuring distance characteristic error vision matching error Standard ±2:5% ±0:01 0:5% 0:5% 0:5% 1:5% 0:5% 3:5% Level 1 ±5% ±0:02 1:0% 1:0% 1:0% 3:0% 1:0% 5:5% Secondary ±10% ±0:04 2:0% 2:0% 2:0% 6:0% 2:0% 8:0% ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 211-2021_English be delivered?

Answer: Upon your order, we will start to translate JJG 211-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJG 211-2021_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 211-2021_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.

Question 5: Should I purchase the latest version JJG 211-2021?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 211-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.