Some standard content:
JJG2053-2006 Quality and Measurement Instrument Verification System This verification system is applicable to quality and measurement instruments. It specifies the purpose of the national kilogram standard for mass unit 1 kilogram (kg), the full set of basic measuring instruments included in the standard, the metrological parameters of the standard, and the procedure for transferring the mass unit value to the working measuring instrument with the help of the secondary standard, working standard and standard measuring instruments, and specifies its error and basic verification method.
1. Measurement standard instruments
1. The standard includes the national kilogram standard, secondary standard and working standard. 2. National kilogram standard
2.1 The national kilogram standard is used to reproduce and preserve the mass unit obtained based on the comparison results with the international kilogram prototype, and transfer the mass unit value to the working measuring instrument with the help of the secondary standard, working standard and standard measuring instruments to ensure the unification of domestic measurement
2.2 All mass values used in the country in accordance with the law must be within the prescribed accuracy range and strictly correspond to the mass value of the national kilogram prototype in a certain determinable ratio. All mass values used in accordance with the law in China must be traced back to the national kilogram prototype in accordance with this verification system.
2.3 The national kilogram standard in air and its supporting equipment are as follows: 2.3.1 The national kilogram standard consists of the national kilogram prototype, the national kilogram witness prototype and the prototype balance. 2.3.2 The national kilogram prototype No. N0·60 is a platinum alloy straight cylinder with a diameter and height of 39mm. Among them, platinum accounts for 90% and iridium accounts for 10%. The nominal mass value of this code is 1kg, and its actual mass value in vacuum is given by the International Bureau of Weights and Measures. The standard deviation of the arithmetic mean of the measurement results is 0.008mg. 2.3.3 The national kilogram witness prototype No. N0·64 is a platinum-iridium alloy straight cylinder with a diameter and height of 39mm. Among them, platinum accounts for 90% and iridium accounts for 10%. The nominal mass value of this code is 1kg, and its actual mass value in vacuum is given by the International Bureau of Weights and Measures. The standard deviation of the arithmetic mean of the measurement results is 0.008mg. 2.3.4 The scale of the prototype balance, weighing 1kg, shall not exceed 0.04mg, and the variability of the balance indication shall not exceed 0.04mg. 2.4 Under normal circumstances, the national kilogram proof prototype does not directly participate in the domestic value verification and transfer work, but is only regularly compared with the national kilogram prototype on the prototype balance to determine whether the mass value of the national kilogram prototype has changed relatively. However, during the period when the national kilogram prototype is sent to the International Bureau of Weights and Measures for verification, the national kilogram proof prototype shall perform the functions of the national kilogram prototype.
2.5 In order to ensure the accuracy of the national kilogram standard, the operating technical specifications of the national kilogram standard and the kilogram proof standard shall be strictly observed.
2.6 The national kilogram standard transmits the mass unit value to the national kilogram secondary standard with the help of the prototype balance by direct comparison method or combined comparison method.
3. National kilogram secondary standard
3.1 The national kilogram secondary standard is used to reproduce and transmit the mass unit value obtained by the verification of the national kilogram standard. 3.2 The national kilogram secondary standard consists of the national kilogram secondary standard scale and corresponding supporting equipment. 3.2.1 The national kilogram secondary standard scale is a right cylindrical scale with equal diameter and height, made of non-magnetic stainless steel with a material density of (800 ± 10) kg/m. The nominal mass of the scale is 1kg, and the limit absolute error △ of the arithmetic mean of its actual mass in vacuum (where the confidence probability of accidental error is 99.73%) is 0.04mg. irKANiKAca
3.2.2 The maximum weighing capacity of the kilogram secondary standard balance is 1kg, and the standard deviation of a single measurement of the balance is not more than 0.02mg. 3.3 The preservation, use and verification of the national kilogram secondary standard scale shall be carried out in accordance with the national secondary standard verification specifications. 3.4 The national kilogram secondary standard scale uses the kilogram secondary standard balance to transfer the mass unit value to the working standard by direct comparison method or combined comparison method.
4. National working standard
4.1 The national working standard is used to reproduce and transmit the mass unit value to the working standard by direct comparison method or combined comparison method through the national kilogram secondary standard balance. 4.2 The national working standard code and corresponding supporting equipment. 4.2.1 The national working standard is a solid code made of non-magnetic stainless steel with a material density of (8000 ± 15) kg/m.
4.2.2 The national working standard code can be subdivided into kilogram working standard code, kilogram group working standard code, gram group working standard code, gram working standard code, milligram group working standard code and microgram group working standard code. The public office working standard code is a code with a nominal value of 1kg. The kilogram group working standard code is a code group with a nominal value of 1-20kg. The gram group working standard code is a code group with a mass nominal value of 1-500g. The gram working standard code is a code with a mass nominal value of 1g. The milligram group working standard code is a code with a mass nominal value of 1g. The milligram group working standard code is a code group with a mass nominal value of 1-500g. The microgram group working standard code is a code group with a mass nominal value of 0.1-0.5mg. The limit absolute error △ of the arithmetic mean value of the actual mass of the above working standard code in vacuum: (where the confidence probability of accidental error is 99.73%) is 0.0007-5mg accordingly. 4.2.3 The working standard balance can be subdivided into balances with different weighing capacities of 2g-20kg. The standard deviation of a single measurement of the balance is 0.1μg-3mg.
4.3 The use and verification of the national working standard code shall be carried out in accordance with the provisions of the national working standard code verification regulations. 4.4 The national working standard code transmits mass values to the first-class code, E-class code, E-class code, E. class code (in the absence of E, class code), and E-class code with the help of the working standard balance by direct comparison method or combined comparison method. II. Standard instruments for measurement
5. Standards are used to reproduce and transfer the mass values obtained by verification of the national working standard code. 6. Standards are composed of standard mass measuring tools and standard mass measuring instruments. 6.1 Standard mass measuring tools include first-class standard measuring tools, second-class standard measuring tools, third-class standard measuring tools and fourth-class standard measuring tools. Except for the first-class code which uses the mass in vacuum, all other standard mass measuring tools use the converted mass. 6.2 Standard mass measuring instruments include first-class standard balances, second-class standard balances, third-class standard balances and fourth-class standard balances. Fourth-class standard balances and standard scales, standard railroad scales. 7. When standard mass measuring tools of various grades are used to verify and transfer the mass measuring tools of the following grades with the help of standard mass measuring instruments of corresponding accuracy, the corresponding maximum error of the standard mass measuring tool shall not be greater than one-third of the corresponding maximum error specified by the mass measuring tool being inspected; the comprehensive limit error of the corresponding indication of the standard mass measuring instrument shall not be greater than one-third of the corresponding maximum error specified by the mass measuring tool being inspected. 8. Standard quality measuring instruments must have sufficient quality stability. It is required that within the entire verification period specified in the national metrology verification regulations, the quality value shall not exceed the corresponding metrology technical indicators specified in the national metrology verification regulations for the measuring instruments.
9. First-class standard measuring instrumentswww.bzxz.net
9.1 First-class standard measuring instruments include first-class scales, E-class scales, E-class scales used as standards, E2-class scales, and E-class scales used as standards.
9.2 The nominal mass value of the first-class scale is 0.05mg-50kg, and the total uncertainty of the mass of the scale is △. (The confidence probability of accidental error is 99.73%, the same below) is 0.002-75mg accordingly. The mass correction value of the scale is -8:81--n for the production and repair of the official newspaper, and ±0.002-soil 75mg for the in-use scale. The first-class scale is made of non-magnetic metal materials with stable quality. 9.3, E-level code, its mass nominal value is 1mg-50kg, the total uncertainty of the code mass △x (confidence probability is 99.73%) is 0.002-25mg. The mass correction value of the code is -8:82-2 for new production and repair, and 0.002-25mg for the one in use. The code is made of non-magnetic stainless steel with a material density of (8000 30) kg/m.
9.4 The mass nominal value of the E-level code used as a standard is 1mg-50kg, and the mass tolerance △ of the code (confidence probability is 99.73%) is 0.002-25mg. The code is made of non-magnetic stainless steel with a material density of (8000 30) kg/m.
9.5, Ez and other codes, the nominal mass value is 1mg-50kg, the total uncertainty of the mass of the code △, (confidence probability is 99.73%) is 0.006-75mg. The mass correction value of the code is -8:-m for new production and repair, and 0.006-75mg for the one in use. The code is made of non-magnetic metal with a material density of (8000 60) kg/m up>3.
9.6 The E, grade code used as the standard, the nominal mass value is 1mg-50kg, the mass tolerance △, (confidence probability is 99.73%) is 0.006-75mg. The code is made of non-magnetic metal with a material density of (8000 60) kg/m.
9.7 The first-class code, E,The E-grade code used as a standard can also transfer the mass value to the second-grade code F-grade code and F-grade code by direct comparison or combined comparison method with the help of a standard balance of corresponding accuracy. The E-grade code and the E-grade code used as a standard can also transfer the mass value to the E-grade code and F-grade code by direct comparison or combined comparison method with the help of a standard balance of corresponding accuracy. The E-grade code and the E2-grade code used as a standard can also transfer the mass value to the F-grade code and F-grade code by direct comparison or combined comparison method with the help of a standard balance of corresponding accuracy. 10. Second-grade standard measuring tools
10.1 Second-grade standard measuring tools include second-grade code, F-grade code, and F-grade code used as a standard. 10.2 The nominal mass value of the second-grade code is 1mg-50kg, and the total uncertainty △ of the code mass (confidence probability is 99.73%) is 0.02-2.5×10mg accordingly. The mass of the code is a positive value, which is 8.8-:218m for new production and repair, and ±0.02-±2.5×10mg for the one in use. The second-class base code is made of non-magnetic metal materials with stable quality. The nominal mass value of
10.3, F and other codes is 1mg-50kg, and the total uncertainty of the mass of the code △ (confidence probability is 99.73%) is 0.02-2.5×10mg accordingly. The mass correction value of the code is 0.81-1218mm for new production and repair, and ±0.02-±2.5×10mg for the one in use. The code is made of non-magnetic metal with a material density of 800010kg/m.
10.4 The mass nominal value of the F, grade code used as a standard is 1mg-50kg, and the mass tolerance of the code △, (confidence 8000-199kg/m
probability is 99.73%) is 0.02-2.5×10mg accordingly. The code is made of a large amount of magnetic metal with a material density of
.
10.5 The second-class code, F, grade code, and F grade code used as a standard use the standard balance of corresponding accuracy to transfer the mass value to F, grade code, M grade code, and M. grade code by direct comparison method or combined comparison method. 11. Third-class standard measuring tools
11.1 Third-class standard measuring tools include F, grade code, and F grade code used as a standard. iiKANiKAca
11.2, F and other codes, the nominal value of the mass is 1mg-5000kg, the total uncertainty of the code mass △, (confidence probability is 99.73%) is 0.06-7.5×10mg. The mass correction value of the code is 8.8-2218m for new production and repair, and 0.06-7.5×10'mg for the one in use. The density of the code material is (8000+0) kg/ms
made of magnetic metal,
11.3 is used as the standard F-grade code, the nominal value of the mass is 1mg-5000kg, the mass tolerance of the code △, (confidence probability is 99.73%) is 0.06-7.5×10mg. The density of the code material is made of metal.
8000-00jkg/m
Non-magnetic
11.4. F, equal code, F, grade code used as standard, use standard balance of corresponding accuracy to transfer mass value to M, equal code, M, grade code, M2 grade code by direct comparison method or combined comparison method. 12. Fourth-class standard measuring tools
12.1 Fourth-class standard measuring tools include M, equal code, M, grade code, M2, M, equal code used as standard, M, equal code, M, grade code, M22 grade code, and track inspection and weighing car. 12.2. M, equal code, its mass nominal value is 1mg-5000kg, and the total mass uncertainty of the code △, (confidence probability is 99.73%) is 0.2-2.5×10mg accordingly. The mass correction value of the code is 1-m for new production and repair, and ±0.2-±2.5×10 mg for the one in use. 12.3 The mass nominal value of the M-grade code used as a standard is 1mg-5000kg, and the mass tolerance △ of the code (confidence probability is 99.73%) is 0.2-2.5×10 mg. 12.4 The mass nominal value of the M-grade code is 50-5000kg, and the total mass uncertainty △ of the code (confidence probability is 99.73%) is 5×103-5×10 mg. The mass correction value of the code is 8-8mz for new production and repair, and ±5×10-±5×10 mg for the one in use. 12.5. The mass nominal value of the M-level code used as a standard is 50-5000kg, and the mass tolerance of the code is △, (the confidence probability is 99.73%) corresponding to 5×10*-5×10°mg. 12.6. The mass nominal value of the M-level code is 1g-5000kg, and the total mass uncertainty of the code is △, (the confidence probability is 99.73%) corresponding to 3-7.5×10mg. The mass correction value of the code is 100mg for new production and repair, and 3-±7.5×10mg for the one in use. 12.7. The mass nominal value of the M-level code used as a standard is 1g-5000kg, and the mass tolerance of the code is △, (the confidence probability is 99.73%) corresponding to 3-7.5×10mg. 12.8. The mass nominal value of M2 and other codes is 50-5000kg, and the total uncertainty of the mass of the code is △, (confidence probability is 99.73%), which corresponds to 1.5×10-1.5×10mg. The mass correction value of the code is 2-2 for new production and repair, and ±1.5×10-±1.5×10mg for the used code. 12.9. The mass nominal value of M2 grade code used as standard is 50-5000kg, and the mass error of the code is △, (confidence probability is 99.73%), which corresponds to 1.5×10-1.5×10mg. 12.10. M2 and other codes, M2 and other codes used as standards, use standard mass measuring instruments of corresponding accuracy to directly compare or combine the mass values of normal M2 and other codes, M22 and other codes, and 0-grade codes. M. Equal code, M. grade code used as standard, with the help of standard mass measuring instruments of corresponding accuracy, transfer the mass value to M22 Equal code by direct comparison or combined comparison method. M Equal code, M grade code used as standard, M. Equal code, M. grade code used as standard, M. Equal code, M, grade code used as standard, M2 Equal code, M22 grade code used as standard can also directly calibrate the corresponding mass measuring instruments.
12.11, Track scale inspection vehicle
12.11.1, Track scale inspection vehicle includes track scale trolley and (operating vehicle) track scale vehicle. 12.11.2. The nominal mass value of the track weighing trolley shall be determined according to the actual work needs, and its relative mass tolerance 8 (confidence probability is 99.73%) is 5×10~1×10. 12.11.3. The nominal mass value of the (running) track weighing trolley can be determined according to the actual work needs, and its relative mass tolerance 8 (confidence probability is 99.73%) is better than 2×10. 13. The use and verification of various standard mass measuring tools and standard mass measuring instruments shall comply with the national metrological verification regulations.
3. Working measuring instruments
14. Working measuring instruments include mass working measuring tools and mass working measuring instruments. They obtain the corresponding mass values through the verification of mass standard measuring tools. 15. Quality working gages
15.1. Quality working gages include E-level, E-level, F-level, M-level, Mn-level, M-level, M22-level and 0-level codes, which are divided into 9 levels in total.
15.2, E grade code, its mass nominal value is 1mg-50kg, the corresponding mass tolerance △, (where the confidence probability of accidental error is 99.73%, the same below) is 0.02-25mg; E, grade code, its mass nominal value is 1mg-50kg, the corresponding mass tolerance △, (confidence probability is 99.73%) is 0.006-75mg; F grade code, its mass nominal value is 1mg-50kg, the corresponding mass tolerance △, (confidence probability is 99.73%) is 0.02-2.5×10^mg; F, grade code, its mass nominal value is 1mg-5000kg, the corresponding mass tolerance △, (confidence probability is 99.73%) is 0.06-7. 5×10mg: M-level code, its mass nominal value is 1mg-50000kg, the corresponding mass tolerance △, (confidence probability is 99.73%) is 0.02-2.5×10mg; Mm-level code, its mass nominal value is 50-5000kg, the corresponding mass tolerance △, (confidence probability is 99.73%) is 5×10-5×10mg; M-level code, its mass nominal value is 1g-5000kg; the corresponding mass tolerance △, (confidence probability is 99.73%) is 1.5×10-1.5×10mg: 0-level code, its mass nominal value is 100g-50kg, the corresponding mass tolerance △, (confidence probability is 99.73%) is 50-2.5×10'mg. 16. Quality work measuring instruments
16.1 The measuring instruments include working torsion balance, liquid static balance, pan balance, other lever-type mechanical balance, non-automatic electronic balance, non-automatic scale (including working track scale) and various automatic measuring instruments for work.
16.2 The accuracy of the indication of the torsion balance shall not exceed 1 division, the variability of the indication of the empty scale shall not exceed 0.5 division, and the variability of the indication of the increase or decrease of the load shall not exceed 1 division. 16.3 The indication variation of the pan balance shall not exceed 1 division. 16.4 The indication variability of the liquid static balance shall not exceed 1 division. 16.5 The indication variability of other lever-type mechanical balances shall not exceed 1 division. 16.6 The maximum allowable error of the static mechanical track scale after new installation and repair is 0.5e, 1e and 1.5e, and the maximum allowable error in use is 1e, 2e and 3e. 16.7 Dynamic weighing rail scales, dynamic weighing tolerances are 0.02%Q, 0.2%, 0.3% and 0.4%Q. 16.8 Other non-automatic weighing instruments (including other non-automatic balances and non-automatic scales), under normal circumstances, the maximum allowable error for new production and repair is 0.5e, 1e, 1.5e, and the maximum allowable error for use is 1e, 2e, 3e.
16.9 The corresponding relative error 8 of automatic weighing instruments shall not be less than 15/100. iikAoNi KAca
17、The use and verification of various quality measuring instruments shall be carried out in accordance with the provisions of the national metrology verification regulations. IV. Block diagram of the verification system for quality measuring instruments %0ke
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