JJF 1080-2002

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JJF 1080-2002	English	379	Add to Cart	3 days	Calibration Specification of Blackbody Radiators in -50~+90 Celsius	JJF 1080-2002	Valid	JJF 1080-2002

JJF 1080-2002
Calibration Specification of Blackbody Radiators in -50~ 90 Celsius
National Metrology Technical Specification of the People's Republic
-50~ 90°C blackbody radiation source
Calibration specification
Radiatorsin-50~ 90°C
Released on.2002-04-15
2002-07-01 implementation
The General Administration of Quality Supervision, Inspection and Quarantine issued
This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine on April 15,.2002, and
Implemented on July 1,.2002.
Focal Point. National Optical Metrology Technical Committee
Drafted by. China Institute of Metrology
This specification is interpreted by the focal point
The main drafters of this specification.
Zhang Jianwei (China Institute of Metrology)
Huo Chao (China Institute of Metrology)
table of Contents
1 range (1)
2 Citations (1)
3 Overview (1)
4 Measurement characteristics (1)
4.1 General requirements (1)
4.2 Measurement requirements (1)
5 Calibration conditions (1)
5.1 Standard and other equipment (1)
5.2 Environmental conditions (2)
6 Calibration items and calibration methods (2)
6.1 Calibration Project (2)
6.2 Calibration Method (2)
7 Calibration results (4)
Appendix A Calibration Certificate Format (5)
Appendix B Calibration Record Contents (8)
Appendix C Uncertainty Evaluation (9)
Appendix D -50~ 90°C Blackbody Total Radiation Comparison Device (10)
-50~ 90°C Blackbody Radiation Source Calibration Specification
1 Scope
This specification applies to the calibration of various blackbody sources. The blackbody radiation source has an operating temperature range of -50 to 90 °C.
Calibration of blackbody and other types of thermal radiation sources at 90~250°C can be performed with reference to this specification.
2 Citations
JJG2093-1995 Normal temperature black body radiation measuring instrument verification system
When using this specification, care should be taken to use the current valid version of the cited literature.
3 Overview
Black body radiation sources operating in the temperature range of -50 to 90 °C are mainly used for infrared detection elements and infrared instruments.
Machine performance test, infrared thermometer, thermal imager calibration and other fields.
The black body radiation source is mainly composed of black body cavity, black body cavity temperature measurement, temperature control component or system, insulation layer and outer casing.
to make. Commonly used black body cavities are cylindrical, conical, spherical, cylindrical and conical, cylindrical and inverted conical, and
Other shapes; black body cavity temperature measurement and temperature control components can be resistance thermometers or thermocouple thermometers; temperature control systems can be used
The heat pipe method, the constant temperature liquid flow method, the resistance heating method, and the like are used.
4 Measurement characteristics
4.1 General requirements
The dimensions are reasonable, the structure is compact, the assembly is reliable; the surface of the radiation surface and the cavity surface are uniform, and the oxide film is ignorant.
Significantly peeling off, no scratches on the surface; no water leakage, leakage and other abnormal phenomena; the temperature difference between the black body shell and the environment must not exceed
10K.
4.2 Measurement requirements
Effective emissivity. ≥0.92
Total radiant temperature measurement range. -50~ 90°C
Full radiance measurement range. 45~320W·m2
5 Calibration conditions
5.1 Standards and other equipment
See Appendix D for a calibration device diagram.
5.1.1 -50~ 90°C standard black body, the main technical indicators are.
Black body cavity diameter. >60mm
Cavity effective emissivity. >0.999
Temperature uncertainty (k=2). 0.1K