JJG 2046-1990 Humidity Measuring Instrument Verification System JJG2046-1990 Standard Download Decompression Password: www.bzxz.net
This verification system is applicable to the verification procedures for humidity measuring instruments.
This verification system specifies the purpose of the national measurement standard for humidity, the full set of basic measuring instruments included in the standard, the basic metrological parameters of the standard, and the transfer procedure for transferring the humidity unit value from the national value to the working measuring instrument through the measurement standard instrument, and specifies its uncertainty and basic verification method.
Some standard content:
National Metrology Verification System of the People's Republic of China JJG2046--90 Humidity Measuring Instruments Approved on January 16, 1990 Implemented on November 1, 1890 State Technical Supervision Bureau Verification System of Condensation Measuring Instruments Verificationaton Schrme of Measuring Instrumcats for HuaidityG2048-80 This metrology system was approved by the State Technical Supervision Bureau on January 16, 1990, and took effect on November 1, 1990. The issuing unit Recovery Rate Standard Material Research Center The issuing unit is responsible for interpreting the technical provisions of this verification system. This paper will be mainly drafted by Luga Jue people (National Inspection Standard Material Research Center) (Animal Standard Material Research Center) (Figure Standard Material Research Center) (National Standard Material Research Center) Niu standard instrument, month Meter standard ear Working ratio is instrument Wet ratio measuring instrument control system holding diagram 【3】 3G2C4G90 Mixture meter instrument verification system Total 3 pages Page 1 This paper is about the verification of the system! The gold grain sequence is complete. This paper verifies the usage of the basic measurement method, implements the basic measurement standard, and the national measurement standard of the unit, and it is not certain about the degree and template of the inspection method. A metrological standard 1 The national metrological standard is based on the definition of mass-temperature ratio, and the dynamic analysis of annual temperature and humidity is used to reproduce and ensure the quality of the product. Units, 2 Quantity, maximum ratio = 119~j5g+kg Total uncertainty: 4(y)/r×1040,32% Three-dimensional measurement instrument 4 Standard measurement method 4.1 Precision point remote sensing meter Measurement range, 70~60, full determination of two, T(,) 0.100.15C 4.2 Standard measurement chart Measurement range, dry bulb humidity t. 5~3 Wet bulb deceleration m5~35 Uncertain degree, ()/×1,% 4.3 Must-pressure humidity generator Full range diagram, =55u =%~95%RH Total 3 pages Page 2 4.4 Dual temperature generator Xie Fan Guo 1=5~50 U=10%~RH Uncertain, 4(U)/V×137≤:1.0%4.5 Liquid humidity regulator (certificate) Measurement range V=1~200 2-/) Uncertainty, ArV,)/V,×1C03% 5 Secondary standard TkeSmKA 3302046-90 5.1 Static humidity generator (pool and swimming liquid and square change) measurement range, = 5-50 U=10%95%FH Uncertainty: A(U)E2.D RH 5.2 Ventilation 7 with table Measurement range, t=5~50 =10%~95% RP Uncertainty: A(U)=2.0%RII 5.3 The measurement range is -70~0℃. The uncertainty is -20~20℃. AI(AT,)50.2-0.3C. 5.4 Dynamic paint mixing generator (including double length, double excitation, steam and humidity generation) is within the range of 5~50 yuan. U=10~95%RH. Uncertainty, (U2.0%BH. 55 Dehumidification device (low life source disk) is within the range of 5~50 yuan. V,=3~200×10-*(V/ Uncertainty, 2/V×100 5.0% Three-working weighing instrument 6 Resistive relay 3TG2048.~90 Full scale cell, 15~50℃ =10%~95%R Uncertainty, AU50%R ? Hygrometer Range: =5~500 U-10%-95%RH Not accurate, A(U)5%RH 8 Strength Standard: =-10-40 U=30%~95%RH not specified (U)5.0%~.%I 9 Dry mud Measurement range, =5~54% U-10%~05%RH not specified, 4(U)≤5%7%RHbzxZ.net 10 Solution point hygrometer Measurement also in China, TT)=-20 not specified, cold mirror or ATA, Z other installation type A(4TE37 11 Electric forget instrument Range, =0~1000×10-(V/V) Uncertain delivery/010% Four humidity meter instrument calibration system diagram Description of symbols in the diagram: Total 3 pages Page 3 (/:a>, V/—Technical determination accuracy Through determination you Compare with the standard design, the instrument is not accurate 5.45, 29 YKANKA (() [g T00-0- a erntIri 3. 07-08--[ Ag-0-R There is a twisted Huadao) +at'vrr ra-stn 60*1 +20140: 23 HI6-50: 0+>×1.7+)7 -9 X-9 ST-6T'--. Yangguo City [a ra e] acr-0+6 Mechanical County Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.