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JJF 2002-2022: Calibration Specification for Laser Markers
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JJF 2002-2022: Calibration Specification for Laser Markers

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National Metrology Technical Specifications of the People's Republic of China Calibration Specifications for Laser Line Markers Released on 2022-12-07 2023-06-07 Implementation Released by the State Administration for Market Regulation Calibration Specifications for Laser Line Markers Responsible unit. National Measurement and Testing Technical Committee for Surveying, Mapping and Geographic Information Main drafting unit. Zhejiang Institute of Metrology China Institute of Metrology Shanghai Institute of Metrology and Testing Technology Participating in the drafting unit. Suzhou Futian Laser Precision Instrument Co., Ltd. Guangxi Zhuang Autonomous Region Institute of Metrology and Testing Beijing Late Laser Precision Instrument Co., Ltd. This specification entrusts the National Surveying and Mapping Geographical Information Metrology and Testing Technical Committee to be responsible for interpretation The main drafters of this specification. Jin Ting (Zhejiang Institute of Metrology) Li Jianshuang (National Institute of Metrology) Feng Zhang (Shanghai Institute of Metrology and Testing Technology) Participating drafters. Wang Gaosheng (Suzhou Futian Laser Precision Instrument Co., Ltd.) Liang Qi (Guangxi Zhuang Autonomous Region Institute of Metrology and Testing) Liu Hongyun (Beijing Late Laser Precision Instrument Co., Ltd.) Wang Yinghui (Zhejiang Institute of Metrology)

Table of contents

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 terms(1) 4 Overview(2) 5 Metrological characteristics(3) 6 Calibration conditions(3) 6.1 Environmental conditions (3) 6.2 Measuring standards and other equipment (3) 7 Calibration Items and Calibration Methods(3) 7.1 Horizontal laser line error(4) 7.2 Horizontal laser line emission angle error (4) 7.3 Horizontal laser line compensation error (5) 7.4 Vertical laser line error(5) 7.5 Orthogonality error of vertical laser line(5) 7.6 Lower alignment error(6) 8 Calibration result expression(6) 9 Recalibration interval(6) Appendix A Calibration Record and Calculation Example(7) Appendix B Calibration Certificate Inner Page Format (10) Appendix C Example of Uncertainty Evaluation of Measurement Results of Horizontal Laser Line Error of Laser Marking Instrument (11)

Introduction

JJF 1001-2011 "General Metrology Terms and Definitions", JJF 1059.1-2012 "Assessment and Definition of Measurement Uncertainty" Indication", JJF 1094-2002 "Characteristics Evaluation of Measuring Instruments", JB/T 11665-2013 "Laser Line Marking Instrument" It constitutes the basic series of specifications formulated by this specification. This specification is published for the first time. Calibration Specifications for Laser Line Markers

1 Scope

This specification applies to the calibration of laser line markers.

2 References

This specification references the following documents. JJF 1071-2010 National Metrology Calibration Standard Compilation Rules 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

3.1 horizontal laser line error horizontallineerror The angle between the projection line of the horizontal laser sector emitted by the laser marking instrument on the vertical plane and the horizontal line. Note. The included angle α is shown in Figure 1. Figure 1 Schematic diagram of horizontal laser marking 1-Plumb plane; 2-Horizontal line; 3-Horizontal laser sector; 4-Horizontal plane; 5-Laser marking instrument The dihedral angle formed by the horizontal laser sector emitted by the laser marking instrument and the horizontal reference plane. Note. Dihedral angle δ is shown in Figure 1. Within the compensation range of the compensator, the amount of change in the emission angle error of the horizontal laser line when the laser marking instrument is tilted. 3.4 vertical laser line error verticallineerror The angle between the projection line of the vertical laser sector emitted by the laser marking instrument on the vertical plane and the vertical line. Note. The included angle β is shown in Figure 2. ...