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JJF 1225-2009 English PDF

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Q: Should I purchase the latest version JJF 1225-2009?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJF 1225-2009 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$309.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1225-2009: Calibration Specification for Transmittance Meter of Automobile
Status: Valid

JJF 1225: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1225-2009	309	Add to Cart	3 days	Calibration Specification for Transmittance Meter of Automobile	Valid
JJF 1225-1990	319	Add to Cart	3 days	O.T.N. for Water flow primary standard in the Range from 1.6 to 146m3/h	Obsolete

Similar standards

JJG 879 JJF 1106 JJG 810 JJF 2003 JJF 2002 JJF 1232

Basic data

Standard ID: JJF 1225-2009 (JJF1225-2009)
Description (Translated English): Calibration Specification for Transmittance Meter of Automobile
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A60
Classification of International Standard: 17.180
Word Count Estimation: 13,110
Date of Issue: 2009-07-10
Date of Implementation: 2009-10-10
Quoted Standard: GB 7258-2004; JJF 1059-1999
Regulation (derived from): AQSIQ Announcement No. 78 of 2009
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to cars with a light transmittance meter (hereinafter referred to as transmittance meter) calibration. This standard specifies the transmittance meter performance measurement and calibration methods.

JJF 1225-2009: Calibration Specification for Transmittance Meter of Automobile

---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 Transmittance Meter of Automobile National Metrological Technical Code of the People's Republic of China Standard for calibration of light transmittance for automobiles 2009-07-10 released 2009-10-10 Implementation State Administration of Quality Supervision, Inspection and Quarantine issued Standard for calibration of light transmittance for automobiles JJF 1225.2009 The specification by the State Administration of Quality Supervision, Inspection and Quarantine on July 10,.2009 approved and since October 10,.2009 from the implementation. Responsible unit. National legal system management metrology technical committee The main drafting unit. Jilin Institute of Metrology China Metrology Association Motor Vehicle Metrology Testing Technology Working Committee Participated in the drafting unit. Zhejiang Jiangxing Automobile Testing Equipment Co., Ltd Foshan Analyst Co., Ltd Gansu Institute of Metrology Shanghai Tongyun Automobile Technology Co., Ltd This specification is interpreted by the National Law Management Metrology Technical Committee The main drafters of this specification. Yan Youyu (Jilin Institute of Metrology) FANG Fa-cheng (Jilin Institute of Metrology) Bao Guohua (China Metrology Association Motor Vehicle Measurement and Testing Technology Working Committee) Participate in the drafters. Zhou Shensheng (Zhejiang Jiangxing Automobile Testing Equipment Co., Ltd.) He Guihua (Foshan Analyst Co., Ltd.) Gao Decheng (Gansu Institute of Metrology) Xu Ji (Shanghai Tongyun Automobile Technology Co., Ltd.)

1 Scope (1) 2 References (1) 3 Terminology (1) 4 Overview (1) 5 Metering characteristics (1) 5.1 Basic parameters (1) 5.2 Technical requirements (1) 6 Calibration conditions (2) 6.1 Calibration of environmental conditions (2) 6.2 Calibration standard and ancillary equipment (2) 7 Calibration items and calibration methods (2) 7.1 drift (2) 7.2 Indication error (2) 7.3 Repeatability (3) 8 Calibration results (3) 8.1 Calibration Certificate (3) 8.2 Uncertainty of measurement of calibration results (3) 9 re-school time interval (3) Appendix A Standard Neutral Filter Transmittance (4) Appendix B Calibration Record Format (5) Appendix C Certificate of Calibration (6) Appendix D Evaluation of Uncertainty in Indication of Light Transmittance (7) Standard for calibration of light transmittance for automobiles

1 Scope

This specification is applicable to the calibration of a light transmittance meter (hereinafter referred to as "light transmittance meter"). This specification specifies the metering performance and calibration method of the light transmittance meter.

2 References

GB 7258-2004 "safety conditions for motor vehicle operation" JJF 1059-1999 "Measurement Uncertainty Evaluation and Representation" Use this specification to use the current valid version of the cited literature.

3 terminology

3.1 visible light transmittance transmittanceofvisiblelight The ratio of the transmitted radiation flux or the luminous flux to the incident flux when the incident radiation is in the visible spectrum interval. Its character Is τ. 3.2 visual function functionofphotopicvision Human visual system for different wavelengths of light sensitivity is different, that is, the degree of response of the human eye to light is the wavelength of the letter number. But each person's visual function has individual differences, in order to have a uniform standard, the International Commission on Illumination (CIE) published the experimental value V (λ) standard value on the basis of experimental data in 1971, Interim measurement committee approval.

4 Overview

The light transmittance meter is used to measure the visible light transmittance of the glass in the driver's viewing area. Transmittance meter measurement principle is to make a certain luminous flux of the incident light through the measured glass, the other side of the measured glass, The light flux of the transmitted light is measured by the light receiving sensor, and the ratio of the transmitted light flux to the incident light flux is calculated. Determine the transmittance of the measured glass. Transmittance meter generally consists of light source components, light receiving sensors and display instruments.

5 measurement characteristics

5.1 basic parameters 5.1.1 Measuring range. 0 ~ 100.0%. 5.1.2 Resolution. 0.1%. 5.2 Technical requirements ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1225-2009_English be delivered?

Answer: Upon your order, we will start to translate JJF 1225-2009_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1225-2009_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1225-2009_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 JJF 1225-2009?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJF 1225-2009 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.