JJG 245-2005 English PDF

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JJG 245-2005: Verification Regulation of Illuminance Meter
JJG 245-2005
Verification Regulation of Illuminance Meter
National Metrology Verification Regulations of the People's Republic
Illuminometer
IluminanceMeter
Released on.2005-04-28
2005-10-28 implementation
The General Administration of Quality Supervision, Inspection and Quarantine issued
Replace JJG 245-1991
This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on April 28,.2005, and
It will take effect on October 28,.2005.
Focal Point. National Optical Metrology Technical Committee
Drafted by. China Institute of Metrology
This procedure is interpreted by the National Optical Metrology Technical Committee.
Drafters of this procedure.
Jiang Xiaomei (China Institute of Metrology)
Gao Zhizhong (China Institute of Metrology)
table of Contents
1 range (1)
2 Citations (1)
3 Overview (1)
4 Metrology performance requirements (1)
4.1 Relative indication error (1)
4.2 V(λ) matching error (1)
4.3 Cosine characteristic (directional response) error (2)
4.4 Nonlinear error (2)
4.5 shift error (2)
4.6 Fatigue error (2)
4.7 Infrared response error (2)
4.8 UV response error (3)
4.9 Temperature coefficient (3)
5 General technical requirements (3)
5.1 Appearance (3)
5.2 Identification (3)
5.3 Instructions (3)
6 measuring instrument control (4)
6.1 Verification conditions (4)
6.2 Verification project (4)
6.3 Verification method (4)
6.4 Processing of verification results (7)
6.5 verification period (8)
Appendix A Recommended Test Methods for Type Identification and Prototype Testing (9)
Appendix B Verification of Illuminance Meter by Comparison Method (12)
Appendix C Example of Uncertainty Evaluation (13)
Appendix D Relationship between two formulas of cosine characteristic error (17)
Appendix E Illumination meter verification certificate and verification result notice page format (18)
Illuminometer test procedure
1 Scope
This procedure is applicable to the first verification, subsequent verification and in-use inspection of the illuminometer (hereinafter referred to as illuminance meter).
The requirements for metering performance in stereotype identification and prototype test can be referred to.
2 Citations
This procedure refers to the following documents.
"Optical Meter" OIML 1988 English version
"Performance Test Method for Illuminometer and Luminometer" CIE 1987 English
JJF1059-1999 "Measurement and Expression of Measurement Uncertainty"
When using this procedure, care should be taken to use the current valid version of the above cited documents.
3 Overview
An illuminometer is a measuring instrument for measuring illuminance. It consists of a photometric head (including a cosine modifier, V(λ) correction filter.
(photoelectric receiver) and display (digital or pointer) two parts. When the photoreceiver receives the pass
When the cosine modifier and the V(λ) filter radiate light, the generated photoelectric signal is processed by the signal on the display.
The corresponding illuminance value is displayed.
4 Metrological performance requirements
4.1 Relative indication error
The relative indication error of the illuminometer shall not exceed the requirements of Table 1.
Table 1 Relative indication error requirements
Level relative indication error /%
Standard ±1.0
Level ±4
Level ±8
4.2 V(λ) matching error
The V(λ) matching error of the illuminometer shall not exceed the requirements of Table 2.
Table 2 V(λ) matching error requirements
Level matching error /%
Standard 3.5
Level 6
Level 8