JJG 2039-1989 High-accuracy measurement of activity and photon emission rate measurement instrument verification system JJG2039-1989 standard download decompression password: www.bzxz.net
This verification system is suitable for the verification of high-accuracy measurement of activity and photon emission rate measurement instruments in the range of 1×102~4×10s-1. It stipulates the use of the national benchmark of activity units. The procedure for transferring the unit value of activity and photon emission rate to working measuring instruments with the help of working benchmarks and standards, and specifies its uncertainty and verification method.

National Certification and Verification System of the People's Republic of China JJG2039-89
High Accuracy Measuring Instruments of Activity and Photon Emittance
Approved on September 1, 1989
Implemented on July 1, 1990
National Technical Supervision
Leaf-growing Instruments
Evaluation of National Standards and Others
Working Instruments…
High Accuracy Measurement of Activity and Photon Emittance Meters and Their Standardization System
ITKANOK
High Accuracy Measurement of Activity and Optical Emittance
Measuring Instrument Verification System
Verification Scheme or Measurement Lstranenig lorHigliAuwuraeyMeaslirements of Activity andPhoton Emittance Rate
J3G203989
This national gate inspection system was approved by the State Technical Supervision Bureau on September 11, 1939 and will be implemented from July 1, 1990. Starting unit:
China Academy of Dissertation Science
The technical report of this inspection system is reviewed and interpreted by the Party Central Committee. This calibration system is mainly used by Fengdu (China Institute of Computer Science and Technology) skeikei 3G203989 2 test No. 1 qualification high accuracy activity measurement and photon emission rate metering and control equipment calibration system. The calibration system is designed for high accuracy activity measurement and photon emission rate metering equipment in ×1℃*4×10\ again. It stipulates the unit of measurement (the standard of the delivery, potential standard, standard working principle of the measuring instrument, the transmission reverse degree and photon emission rate) The single-unit measurement of the electron emissivity is valid, which indicates its uncertainty and verification method. A metrological standard is used. This verification system includes the following radioactivity standard devices: National radioactivity standard device: 4-element (PC)-adaptable standard device; 4-element (PPC)-compliant filter standard device; 4-P (L) activity standard device: 4-element ( ... 4 yuan ionization chamber working standard, 0=0.5%~4.5% 2.2 point + 1Co source T. as the standard, 0=0.3%0,5%. Second measurement standard penis
9 standard often discuss, out of point! Co: source as its standard and other natural standard calibration, energy source range is 244heV-1.4MeV, then the total uncertainty of the photon emission rate is 1.5%~5%, the most 4×10*-4×1059-14 point Ya radiation energy standard filter, source diameter less than 2mm, inch self-absorption, source and source ≥ difference less than 02%, optional carriers \*Mn, 9zn1C, \cd, mAm, uCs, iCa&Y, 2aNa, \lg, Sr, \sn fu\Eu, etc., ask for the standard harmonic meter or reference measurement, the standard value of the photon emission rate will be 2 pages 2
4×10×4×10-1, the total value is 0-1.5%~5%.kerka
G2039—89
5 point-shaped time line standard source, the source diameter can be as small as 2m, for self-absorption right membrane stock collection, the difference between the quotient and the source can be as small as 0,5%: optional nuclear constant M, 6\ F,! 2n,TCa, "Cf, \Anli\B, etc., according to the benchmark measurement, the nominal value range of the light emission rate is 4×10\~4×10*3-1, the total uncertainty is -1%~5%6, the nominal value range of the radioactivity is 4×1014×10*Ba/mL, the total uncertainty is 0.5%~7% of the pressure-based measurement method (referring to the national standard for laser activity). Method! Normal range 0 total uncertainty %~
Three working instruments
8Activity basic measurement method, activity measurement range is 1×101×10 total uncertainty absorption 63%~%,
9Activity is relatively rare, referring to various activity measurement quantities, the measurement range is 4×~4×10*g, total uncertainty d=1~%, 10 only, the accuracy rate range is 1×10 *～1×10”3-, total uncertainty -2%~%,
11 harmonic only, the photon emission rate is 1×10~1×10g, the total uncertainty 2=3%~10%,
Four high-precision measurement disk activity photon emission rate measurement ink verification system block diagram
High-precision dehumidification activity and light emission water measurement instrument verification system block diagram Micro-emission national child management
1× 1u3- 1x 10+: Bq
8-0.3X--1X
Working standard
0 -0.32 --4.5%
Using source chemical city
Activity base density measurement method
Standard to obtain"
Direct measurement
1x 30..-1x 104 B9
eB-3 with ~b%
Indirect measurement
Modified radioactive standard liquid
4×1a4~4x196BgWww.bzxZ.net
6 = 0. 5% -7%
Using radioactive source comparison
Active love firm lazy method
1×1C~1×19* q
8- D.%~7%
The most loaded bone
4X102-4×105B*
=1%~ground medicine
Ce L work
Clear mixed
Brown standard storage instrument
4×109 ~4× [0=s-
5=1, 511 ~ 5 %
Directly adjust
Point X-ray standard original
4× 103 - 4×105 s-
4=1. 6%- 5%
1X 102 1X 10 t g-
Medium=2%~7%
Point X-ray or standard photo
4× 1334X us-1
5=1%~5
X Xu Jiao
I×102.1× 106g\1
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