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JJG 249-2023: 0.1 mW~200 W Laser Power Meters
Status: Valid JJG 249: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 249-2023 | English | 469 |
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0.1 mW~200 W Laser Power Meters
| Valid |
JJG 249-2023
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| JJG 249-2004 | English | 799 |
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Verification regulation of 0.1mW~200W laser power meters
| Obsolete |
JJG 249-2004
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| JJG 249-1981 | English | 559 |
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Verification Regulation of Laser Power Meter in Low Range
| Obsolete |
JJG 249-1981
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Standard similar to JJG 249-2023 JJG 404 JJG 443 JJG 134 Basic data | Standard ID | JJG 249-2023 (JJG249-2023) | | Description (Translated English) | 0.1 mW~200 W Laser Power Meters | | Sector / Industry | Metrology & Measurement Industry Standard | | Word Count Estimation | 21,215 | | Date of Issue | 2023-03-15 | | Date of Implementation | 2023-09-15 | | Issuing agency(ies) | State Administration for Market Regulation | JJG 249-2023: 0.1 mW~200 W Laser Power 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
JJG 249-2023
0:1mW~200W laser power meter
0:1mW~200WLaser Power Meters
2023-09-15 Implementation
Released by the State Administration for Market Regulation
0:1mW~200W laser power meter
Verification Regulations
0:1mW~200WLaser Power Meters
Replace JJG 249-2004
Responsible unit: National Optical Metrology Technical Committee
Main drafting unit: China Institute of Metrology
Shanghai Institute of Metrology and Testing Technology
Participating in the drafting unit: China Academy of Testing Technology
Jiangsu Institute of Metrology
This regulation entrusts the National Optical Metrology Technical Committee to be responsible for interpretation
The main drafters of this regulation:
Deng Yuqiang (National Institute of Metrology, China)
Ming Xia (Shanghai Institute of Metrology and Testing Technology)
Li Chaochen (National Institute of Metrology)
Participating drafters:
Xu Tao (National Institute of Metrology)
Xiaoxiao Chen (China Academy of Testing Technology)
Zhang Fan (Jiangsu Institute of Metrology)
Table of contents
Introduction (Ⅱ)
1 Scope(1)
2 References(1)
3 Overview(1)
4 Metrological performance requirements (1)
5 General Technical Requirements(1)
5:1 Signs(1)
5:2 Technical data and accessories (1)
5:3 Appearance(1)
5:4 Safety precautions (2)
6 Measuring Instrument Control(2)
6:1 Test conditions (2)
6:2 Verification items and verification methods (2)
6:3 Processing of verification results (5)
6:4 Verification cycle (5)
Appendix A Verification Record Format (6)
Appendix B Format of the inner pages of the verification certificate/test result notification (8)
Appendix C Laser Power Meter Indication Relative Error and Correction Factor Calibration Uncertainty Evaluation Example (10)
Appendix D Instructions for Verification of Monitoring System Using Laser Output Power (13)
Introduction
JJF1002 "Rules for Writing National Metrology Verification Regulations", JJF1001 "General Metrology Terms and Definitions",
JJF1059:1 "Assessment and Expression of Measurement Uncertainty" together constitute the basic series supporting the revision of this regulation
document:
JJG 249 "0:1mW~200W Laser Power Meter" is a revision of JJG 249-2004: with JJG 249-
Compared with:2004, except for editorial modifications, the main technical changes are as follows:
---Introduction added;
---Measurement performance requirements deleted "measurement range", "change of responsivity during irradiation" and "correction coefficient not
"Certainty", added "relative error of indication";
--- Modified the requirements of "ambient temperature" and "relative humidity" in the verification conditions;
--- Modified the "verification of correction coefficient", "verification of response surface inhomogeneity" and "verification of non-linearity", delete
In addition to "Verification and calculation methods of maximum radiant power and irradiance";
---Added "Appendix C Laser Power Meter Indication Relative Error and Correction Factor Calibration Uncertainty Evaluation Display
Example" and "Appendix D Instructions for Verification of Monitoring System Using Laser Output Power":
The release status of previous versions of this regulation is as follows:
---JJG 249-2004;
---JJG 293-1982;
---JJG 249-1981:
0:1mW~200W Laser Power Meter Verification Regulations
1 Scope
This regulation is applicable to the power range of 0:1mW~200W and the laser power within the wavelength range of 0:3μm~11μm
The first verification, subsequent verification and in-use inspection of the meter: Calibration of laser power meters in other ranges can refer to this regulation
implement:
2 References
This regulation refers to the following documents:
JJG 2078 Laser Power Measuring Instrument Verification System Table
GB/T 11153-2012 Performance testing method of small laser power meter
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 laser power meter is an instrument used to measure the magnitude of laser radiation power: Laser power meters are usually detected by laser power
composed of devices and display instruments: Its working principle is that after the laser radiation power is detected by the laser power detector, it directly or indirectly
It is converted into an electrical signal, and after signal processing in the display instrument, it is displayed as the measured laser power value, and the unit is W:
Laser power meters can be divided into photoelectric type and pyroelectric type according to the measurement principle, and can be divided into planar type and cavity type according to the geometric structure:
According to the spectral response characteristics, it can be divided into spectral response selective type and spectral response flat type, according to whether it has self-calibration function
It can also be divided into relative type and absolute type:
4 Metering performance requirements
4:1 Inhomogeneity of receiving surface response: ≤5%:
4:2 Non-linearity: no more than ±5%:
4:3 Relative error of indication value: no more than ±10%:
5 General technical requirements
5:1 Logo
The inspected instrument should have a label indicating the name, model, manufacturer and serial number of the instrument:
5:2 Technical data and accessories
Necessary technical data, accessories and accessories shall be provided:
5:3 Appearance
There should be no electrical, optical and mechanical faults or damages affecting the working performance; each switch and button should be clearly marked and connected
The touch is good and the work is normal; the screen should display clearly:
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