JJG 2048-1990 500-1000K Full Irradiation Measuring Instrument Verification System JJG2048-1990 Standard download decompression password: www.bzxz.net
This metrology verification system specifies the procedure for transferring the value of 500-1000K full irradiation national metrology reference to working metrology instruments through metrology standards, and specifies the errors and their basic verification methods.

National Metrology Verification System of the People's Republic of China JJG2048—90
500~-1000K Full Irradiation Measuring Instruments
Approved on February 26, 1990
Implementation on January 1, 1991
State Administration of Technology
Verification Scheme ot Measuriag Instruments[or500100nrradinnceScale
3JG 2048—90
National Technical Supervision Bureau approved on February 26, 1990, and implemented since January 1, 1991,
Start sharing unit:
China Testing Technology Research Institute
The technical provisions of this verification system are the responsibility of the drafting unit. This verification system is the drafter of the main drafting.
(China Health Test Technology Research Institute)
Compete with the same length
1. Measuring instrument
2. Measuring standard group
3. Measuring single instrument
4. 5001330K full-scale measurement instrument verification system diagram.n karka
JJG 248-93
4 pages
500~1000K full-scale measurement instrument verification system This measurement verification system specifies the procedure for the transmission of 500~1000K enterprise measurement standards to working measurement instruments through comparative measurement standards, and specifies the error and its instrument construction method.
A metrological standard
1 The national standard must be reproduced and guaranteed to be 51000K according to the standard, and the unit value must be passed to the work unit of the measuring device to ensure the uniformity of the internal measurement.
2 The unit of this national standard must be used as the basis for the integral input of the temperature range of the radiation source and the infrared detector integral illumination measurement of our country. 3 This national standard is composed of the following national instruments. 1, 1 is a full-scale reference device realized by using 5DV~1UK air conditioning and humidity adjustable absolute body exchange alarm, which meets the following technical conditions: (1) The output length M of the black body simulation device is given by the following formula, -5.-0-T
Where: c. —The effective emissivity calculation value on the effective radiation surface of the irradiation technique is: 0-—is the formula-obtained radiation constant, and its value is 5670×10*Wm*t. K
TThermodynamic overflow of the effective radiation surface of the black body cavity, (2) The diameter of the effective radiation surface of the black body cavity is not less than 13mm, and the wet average perturbation is better than ±0.02%T in the range of 500~100K. (3) The maximum integral of the black body cavity within the length of the cavity diameter is not more than 0.2·T, and the effective emissivity of the illuminator in the range of 500~19:30K is not less than 0.999 (4) The measurement uncertainty of the effective auxiliary radiation thermodynamic temperature value is better than 30%·T, (5) The uncertainty of the full auxiliary radiation unit (Wm*1) reproduced by the absolute cumulative simulation device is better than 0.6%. The above 501000 integral accuracy can be monitored by one of the two sets of measurement tools under H.
G2048—-90
（1）Also, the unit price of radiant power measured at the industrial level mY is still uncertain at the center, and the current (standard example deviation) is excellent, bZxz.net
（2）: Under the combination of gold reduction, the absolute temperature change requires a slow resistance, and the cost of determining the temperature point is divided into
, 231.97±0.35℃
to 419.580,08 center
916.93±0,17
4 national benchmark through the whole vehicle radiation direct comparison measurement, or given geometric combination conditions under the whole vehicle radiation measurement, to the standard difficult measuring instrument to transmit the full radiation unit value. 5 The standard rate of SuU~1OUUK is the standard operation technology specification of the core standard. The standard guarantee is used according to the rules.
Second measurement standard instrument
6500~1000K full vehicle lighting standard test instrument is divided into first-class standard and second-class standard with two equal sensitivity.
7 First-class standard inquiry
7.1500~100K The first-class standard position of the remaining vehicle lighting is as follows in three forms 15% 0~1000 range with the same research through the heated body radiation source (2) 500~10mK main loss share black body radiation data. (3) 1~10am range. Infrared detector. 7.2 The first-class standard is not faster than 1.0%, 7.3 The first-class standard is passed by the comparison of the total loss of the direct radiation and the dose should be compared with the second-class standard and the working instrument, and the first-class standard is adopted. 8.1 The 599~102 standard is used as the auxiliary radiation meter, and the uncertainty of the whole cell pressure is better than 3%. 8.2 The second-class standard is adopted in the 1+10 standard. The uncertainty of the whole cell pressure is better than 3%. , The third-class standard is only passed by the combination of the enterprise and the working measuring instrument G2048-90
.
Three working measuring instruments
Total 4 pages, 3 pages free
9 The infrared radiation prediction and its system appearance can be used as a working tool to provide known residual light in 1~1 range. According to the purpose from time to time, the change can be in 9%~10x,
Use the infrared detection black light in 1-10 range as the working measuring instrument of the known enterprise new job sequence flow, according to the same review, the cost is not in 3%-·10
11 Uncertain The 3-beat working meter must be calibrated with the first-class standard.
4 5~1000K full light illumination metering equipment calibration system diagram 4 pages in total Page 4
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