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JJG 2048-2011 English PDF

US$239.00 · In stock
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JJG 2048-2011: Verification Scheme of Measuring Instruments for 500K~1000K Irradiance Scale
Status: Valid

JJG 2048: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 2048-2011	English	239	Add to Cart	3 days [Need to translate]	Verification Scheme of Measuring Instruments for 500K~1000K Irradiance Scale	Valid	JJG 2048-2011
JJG 2048-1990	English	239	Add to Cart	2 days [Need to translate]	Verification Scheme of Measuring Instruments for 500~1000K Irradiance Scale	Obsolete	JJG 2048-1990

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Basic data

Standard ID	JJG 2048-2011 (JJG2048-2011)
Description (Translated English)	Verification Scheme of Measuring Instruments for 500K~1000K Irradiance Scale
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A60
Classification of International Standard	17.180
Word Count Estimation	10,118
Date of Issue	2011-12-28
Date of Implementation	2012-06-28
Older Standard (superseded by this standard)	JJG 2048-1990
Regulation (derived from)	AQSIQ Announcement No. 205 of 2011
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to 500K ~ 1000K radiation measuring instruments measure passed. Provides 500K ~ 1000K full value measurement basis irradiation national measurement standards through the work measurement standards for value transfer procedures, methods and best measurement capability. In carrying out the calibration, can be used as a basis for traceability.

JJG 2048-2011: Verification Scheme of Measuring Instruments for 500K~1000K Irradiance Scale

---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.
Verification Scheme of Measuring Instruments for 500K ~ 1000K Irradiance Scale People's Republic of China National Metrological Verification System tables 500K ~ 1000K full radiation measuring instruments MeasuringInstrumentsfor500K ~ 1000KIrradianceScale Issued on. 2011-12-28 2012-06-28 implementation The State Administration of Quality Supervision, Inspection and Quarantine released 500K ~ 1000K whole irradiation Measuring instruments Verification System Instrumentsfor500K ~ 1000 Replacing JJG 2048-1990 The Verification System by the State Administration of Quality Supervision, Inspection and Quarantine on December 28, 2011 Batch Accurate, and implemented since June 28, 2012. Focal point. the National Technical Committee on Optical metrology Drafting units. China Testing Technology Research Institute China Institute of Metrology The Verification System commissioned the National Commission on optical measurement technology to interpret The main drafters. Su Hongyu (China Testing Technology Research Institute) Huo (China Institute of Metrology) Zhang Xianliang (China Testing Technology Research Institute) Drafters participate. On behalf of the Rainbow (China Institute of Metrology)

1 Scope (1) 2 baseline measurement (1) 2.1 full irradiation reference means (1) 2.2 500K ~ 1000K Irradiation work full reference means (2) 2.3 Measurement value transfer (3) 3 measurement standards (3) 3.1 class Standard (3) 3.2 second standard (3) 4 working measuring instruments (3) 5 500K ~ 1000K full radiation measuring instruments Verification System block diagram (4) 500K ~ 1000K full radiation measuring instruments Verification System

1 Scope

The verification system applicable to 500K ~ 1000K value transfer radiation measuring instruments. It provides 500K ~ 1000K whole irradiation national measurement reference value (hereinafter referred to as "full irradiation reference") by measurement standards to working measuring Standard apparatus for value transfer procedures, methods and best measurement capability. In carrying out the calibration, but also as a measure traceability Source basis.

2 baseline measurement

Full reference radiation for reproduction and preservation of 500K ~ 1000K whole units measure radiation, and by the standards of measurement Working measuring instruments of value transfer. Full reference reproducible irradiation unit as an internal legal temperature range of 500K ~ 1000K radiation provided Highest standards integral irradiance and irradiance infrared detector integration of traceability. 2.1 full irradiation reference means 500K ~ 1000K whole irradiation by reference means a reference blackbody source and accuracy with suitable measuring Equipment. 2.1.1 reference blackbody source 2.1.1.1 working in a metal solidification point of the absolute blackbody radiation temperature --- reproduce natural reference point, the whole In accordance with the highest radiation measured at four metals freezing point blackbody group, effective emissivity of blackbody cavity which is not less than 0.9999, Uncertainty Uε 0.05% (coverage factor k = 2), International Temperature Scale ITS-90. Indium (In). 156.5985 ℃; Tin (Sn). 231.928 ℃; Zinc (Zn). 419.527 ℃; Aluminum (Al). 660.323 ℃. 2.1.1.2 reference blackbody source metrological performance requirements as shown in Table 1. Table 1 metrological requirements Category Technical indicators parameter Cavity geometry parameters Effective radiating diameter ≥20mm Cavity length ratio L/R (L is the total length of the cavity, R is the radius of the chamber opening) ≥15 Concentricity deviation (effective radiating center, the center of the mouth cavity blackbody The front surface of the center of the opening) ≤0.5mm Temperature characteristics Metal freezing point must be the international temperature scale ITS-90 specified by a Class of temperature points Freezing point temperature plateau duration ≥40min Freezing point difference between the measured temperature value ≤30mK International Temperature Scale

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