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National Metrological Technical Specification of the People's Republic of China JJF1002—1998
The Rules for Drafting National Metrological Verification Regulation
Issued on June 25, 1998
Implementation on January 1, 1999
Issued by the State Administration of Quality and Technical Supervision
JJF1002—1998
The Rules for Drafting National
Metrological Verification Regulation JJF1002--1998
Replaces JJF1002—1984
This specification was approved by the State Administration of Quality and Technical Supervision on June 25, 1998, and came into effect on January 1, 1999.
Responsible unit: Metrology Department of State Administration of Quality and Technical SupervisionMain drafting unit: Metrology Department of State Administration of Quality and Technical SupervisionSichuan Institute of Technical Supervision and Information
Participating drafting unit: China Testing Technology Research InstituteThis specification is interpreted by the Metrology Department of State Administration of Quality and Technical SupervisionMain drafters of this specification:
JIF10021998
Ma Yanbing (Metrology Department of State Administration of Quality and Technical Supervision)Xu Qixian (Sichuan Institute of Technical Supervision and Information)Chen Hong (Metrology Department of State Administration of Quality and Technical Supervision)Participating drafters:
Chen Yuankang (China Testing Technology Research Institute)Wang Rongai (China Testing Technology Research Institute) 1
References
3 General
3.1 General principles for the preparation of regulations
3.2 Basic requirements for the expression of regulations
4 Structure of regulations
Contents of each part of the regulations
5.1 Cover
5.4 Introduction
5.5 Scope
5.6 References
5.7 Terminology and measurement units
5.9 Metrological performance requirements
5.10 General technical requirements
Control of measuring instruments
6 Hierarchy division
6.4 Appendix
7 Editorial details Then
7.1 Footnotes
Notes in the article
7.3 Notes to tables and figures
7.4 Explanation of items
Mathematical formulas
Numerical expressions
Abbreviations
Numerical values and unit markings
JJF1002—1998
7.12 Punctuation marks and simplified Chinese characters
7.13 Bumper lines
Terminator lines
Font size and font of regulations
Appendix Λ
Appendix B
Appendix C
Appendix D
Appendix EbzxZ.net
Appendix F
Format of cover and back cover
Format of pages
Font and size of regulations
Example of level numbering
Example of article arrangement
Example of error analysis
JIF1002-1998
JJF1002—1998
Rules for the preparation of national metrological verification regulations
This rule refers to Part 2 of the Technical Work Guidelines of the International Organization of Legal Metrology (OIML) "Rules for the Drafting and Presentation of International Recommendations and International Documents", and retains the effective contents of JJF1002-1984 to suit my country's national conditions.
1 Scope
This rule applies to the preparation of national metrological verification regulations (hereinafter referred to as regulations). It can be used as a reference for the preparation of departmental metrological verification regulations and local metrological verification regulations. When international recommendations are adopted equally or equivalently, the format and method of writing may be consistent with the adopted international recommendations.
2 References
This rule refers to the following documents:
"OIML Technical Work Guidelines" OIML 1993 English version "Guidelines for the Expression of Uncertainty" ISO 1993 English version "Legal Metrology Terms and Terminology" OIML 1997 English version "International Common Metrology Terms and Terminology" BIPM 1993 English version "Regulations on the Use of Numbers in Publications GB/T15835-1995" When using this rule, attention should be paid to using the current valid versions of the above-mentioned references. 3 General Principles
3.1 General Principles for the Preparation of Regulations
National metrology verification regulations are formulated and approved and promulgated by the metrology administrative department of the State Council for the purpose of evaluating the characteristics of metrological instruments, and are implemented nationwide as technical documents to determine the legal status of metrological instruments. To this end, the regulations should be: - comply with the provisions of relevant national laws and regulations; - the scope of application must be clear, and within the scope of its definition, it should be complete as needed; - all requirements should be scientific and reasonable, and consider the feasibility of operation and the economy of implementation; - according to national conditions, actively adopt the international recommendations and international documents issued by the International Organization of Legal Metrology (OIML) and the international standards issued by relevant international organizations (such as ISO, IEC, etc.). 3.2 Basic requirements for the expression of regulations
- the text expression should be rigorous in structure, clear in level, accurate in wording, and clear in description, so as not to cause different understandings;
- the terms, symbols, and codes used should be unified and always express the same concept; - the names and symbols of measurement units, the names and symbols of quantities, and the names and symbols of errors and measurement uncertainties should be expressed in accordance with national regulations:
formulas, drawings, tables, and data should be accurately expressed as required; 1
JJF1002—1998
- the expressions of the relevant contents of the relevant regulations should be coordinated and consistent, and there should be no contradictions. 4 Structure of the regulations
The regulations shall consist of the following parts:
References
Terms and measurement units
Metrological performance requirements
General technical requirements
Control of measuring instruments
Note: All underlined parts are mandatory chapters. 5 Contents of each part of the regulations
5.1 Cover
The format of the cover is shown in Appendix A.
The number of the regulations consists of its code, sequence number and publication year (four digits). For example
XXXX-XXXX
Publishing year
-Sequence number
-Regulations code
The name of the regulations should be concise, accurate, standardized and highly generalized. 5.2 Pages
The format of the pages is shown in Appendix B.
5.3 Table of Contents
The table of contents shall list the number, title and page number of the chapter, the first level of articles and the appendix. The title and page number shall be connected by a dotted line.
5.4 Introduction
JJF1002—1998
The introduction is not numbered or titled, and is used to make special descriptions of this regulation. For example, when international recommendations, international documents or international standards are adopted, the degree or situation of their adoption shall be explained. 5.5 Scope
This part is used to explain the scope of application of the regulation, so as to clearly define the subject of the regulation and the requirements for the relevant stages of the control of the measuring instrument. For example, this regulation is applicable to the finalization and appraisal, prototype test, initial verification, subsequent verification and in-use inspection of ×× measuring instruments (×× range). 5.6 References
List the number, year and name of the main technical documents cited in the text of the regulation. Finally, a note should be added: "When using this regulation, attention should be paid to the use of the current valid versions of the above-mentioned references." 5.7 Terms and measurement units
When the regulations involve terms that have not yet been stipulated by the state, the necessary definitions should be given in this chapter. The measurement units shall all adopt the national legal measurement units. The measurement units refer to the unit names and symbols of the main measurement characteristics of the measuring instruments described in the regulations. If necessary, the conversion relationship of similar measurement units can be listed. 5.8 Overview
This section mainly briefly describes the principle, structure and use of the metrological instruments under inspection (including necessary structural diagrams). 5.9 Metrological performance requirements
This section should specify the metrological requirements that the metrological instruments under inspection must meet in each stage of metrological instrument control, such as accuracy grade, maximum allowable error, measurement uncertainty, influence quantity, stability, interference quantity, etc. 5.10 General technical requirements
This section should specify the technical requirements that must be met to meet the metrological requirements, such as appearance structure, anti-deception, adaptability and safety of operation, and mandatory marking and explanatory marking. 5.11 Measuring instrument control
This section specifies the requirements for the relevant contents of measuring instrument control. Measuring instrument control may include type identification or prototype testing, initial verification, subsequent verification and in-use inspection. 5.11.1 Type Appraisal or Prototype Test
Type appraisal or prototype test of measuring instruments shall be written in accordance with the requirements of "JJG1015-1990 General Specification for Type Approval of Measuring Instruments".
5.11.2 Initial Verification, Subsequent Verification and In-use Inspection The purpose of initial verification is to determine whether the metrological performance of newly produced measuring instruments meets the requirements specified in the type when they were approved. The purpose of subsequent verification is to determine whether the metrological performance of the measuring instruments meets the specified requirements after the last verification and after use within the validity period. Subsequent verification includes verification within the validity period, periodic verification and verification after repair. When the metrological performance of the measuring instrument is significantly affected after installation and repair, its subsequent verification shall, in principle, be carried out according to the initial verification.
The purpose of in-use inspection is to check whether the verification mark or verification certificate of the measuring instrument is valid, whether the protective mark 3
JJF1002—1998
is damaged, whether the state of the measuring instrument after verification has been significantly changed, and whether its error exceeds the maximum allowable error in use.
5.11.2.1 Verification conditions
Verification conditions include metrological basis, metrological standard, supporting equipment and environmental conditions. 5.11.2.2 Verification items and verification methods
Verification items refer to the inspected parts and contents of the inspected measuring instrument. When determining the verification items for the first verification, subsequent verification and in-use inspection, due to different purposes, they can be increased or decreased as appropriate according to the actual situation. When specifying various verification items in the regulations, they can be listed in the form of a "verification item list". Example:
Verification items
First verification
Subsequent verification
Items that need to be verified are indicated by "+", and items that do not need to be verified are indicated by "". Inspection in use
Verification methods are the prescribed operating methods, steps and data processing for the verification of the items of the measuring instrument. The determination of the verification method must have a theoretical basis and be practical, and examples can be given when necessary. The formulas used in the verification and the constants and coefficients used in the formulas must have a reliable basis. 5.11.3 Processing of verification results
The processing of verification results refers to the conclusion on whether the inspected measuring instrument is qualified or unqualified after the verification is completed. In accordance with the provisions and requirements of the verification procedures, the measuring instrument that passes the verification shall be issued with a verification certificate or stamped with a verification pass seal; the measuring instrument that fails the verification shall be issued with a verification failure notice and the unqualified items shall be indicated. The format of the inner pages of the verification certificate should be specified, such as verification conditions, verification items, verification results, accuracy level, error, measurement uncertainty and coverage factor. 5.11.4 Verification cycle
The longest verification cycle under normal conditions should generally be given in the regulations. The principle of determining the verification cycle is the longest time interval during which the measuring instrument can maintain the specified metrological performance during use. That is, the length of the verification cycle should be determined based on the performance, requirements, environmental conditions, frequency of use, and other factors such as economic rationality of the measuring instrument. Example: The verification cycle of ×××× generally does not exceed ×××× (time). 5.12 Appendix
The appendix is an important part of the regulations. The appendix may include: verification record formats that require uniformity and special requirements, error analysis examples, test report formats for finalization and identification, prototype testing, the inner page format of the verification certificate, the inner page format of the verification failure notice and other forms, recommended test methods, relevant procedures or charts, and related reference data.
6 Hierarchical division
JJF1002—1998
For the hierarchical division numbering example, see Appendix D, and for the arrangement of the articles, see Appendix E. Table 1 Name of the hierarchy
Name of the hierarchy
Article (first level)
Article (second level)
Article (third level)
Chapter is the basic component unit in the hierarchy of the regulations. Numbering example
1.1.1, 1.1.2.
1.1.1.1，1.1.1.2.
Appendix A, Appendix B,
In the regulations, "Scope" should be the first chapter, and the chapters should be numbered using Arabic numerals, starting from 1 and continuing to the appendix.
Each chapter should have a title, which should be placed after the number, with a space of one Chinese character between the two, and on a separate line, separated from the subsequent articles.
Articles are numbered subdivisions of chapters. The first-level articles can be further subdivided into second-level numbered articles, and can be subdivided into third-level articles as needed, but excessive subdivision should be avoided. Articles should be numbered with Arabic numerals (the chapter and article numbers are arranged in the top margin, without commas, semicolons or dots after them). See Appendix E for examples.
If each chapter or article is not further subdivided, the next level of numbers should not be used to number the articles. Each first-level article should be given a title. After the number, leave a blank space for the title, occupy a separate line, and be separated from the following articles. Articles of other levels may have titles or not as needed. If there is no title, leave a blank space for the article number and then follow the article.
A paragraph is an unnumbered level in a chapter or article. The first line of a paragraph should be arranged two spaces indented from the left side of the page, and should be arranged in the top margin when moving lines.
6.4 Appendix
Each appendix should be arranged on a separate page.
JJF1002--1998
Appendixes should be numbered in sequence starting with A using capital letters in English, but without " and O. The word "Appendix" should be followed by letters in the order in which they appear. "Appendix ×" is located at the top left, and the title of the appendix is centered on the next line. The number of the chapter, article, table, and figure in the appendix should be preceded by the number of the appendix. 7 Editorial Rules
7.1 Footnotes
Footnotes provide additional information, but their use should be kept to a minimum. Footnotes should be located at the bottom left of the page, separated from the main text by a short, thin horizontal line that is one-fourth the width of the page. Footnotes are usually distinguished by consecutive circled Arabic numerals ①, ②, ③, etc., and each page is renumbered starting from 1. The footnote is marked in the main text. The annotation method is to mark the same numbers ①, ②, ?, etc. in the upper right corner of the relevant words or sentences.
7.2 Notes in the Articles
Notes in the articles are only used for necessary explanations for understanding the articles. They should be written on a new line and placed after the article being explained.
When there is only one note, the title "Note:" is followed by the annotation article. If there are more than one note at the same time, the first line is the title "Note:", and the annotation articles are arranged from the second line. Each note is numbered with Arabic numerals 1, 2, 3, etc. and written on a new line.
The title "Note:" should be indented by two spaces. When the annotation article moves to another line, it should be flush with the text where it starts. 7.3 Table notes and figure notes
Table notes should be placed within the borders of the relevant tables. Figure notes should be placed Centered under the relevant figure title. Use a separate numbering sequence for the "Notes" of each table and each drawing. 7.4 Item Description
The item description can start with a complete sentence followed by a colon (see Example 1); or start with the first half of a sentence without a colon (see Example 2), and the sentence is completed by the subsequent item descriptions. Example 1:
The regulation gives requirements for the following measuring devices: - Motor vehicle refueling pump;
- Measuring device for unloaded cabins.
Example 2:
The regulation should:
- Comply with the provisions of relevant national laws and regulations;- The scope of application must be clear, and within the scope defined, it should be as complete as necessary;- Each requirement is scientific Reasonable, and consider the feasibility of operation and the economy of implementation: First, according to national conditions, actively adopt the international recommendations, international documents issued by the International Organization of Legal Metrology (OIML) and international standards issued by relevant international organizations (such as ISO, IEC, etc.). 6
JJF1002-1998
Each item description should be added with a dash, and when the item description is moved, it should be arranged in the top grid. 7.5 Table
7.5.1 Numbering
Tables should be numbered with Arabic numerals starting from 1. Its numbering should be independent of the numbering of chapters and figures. When there is only one table, it should be marked as "Table 1". Each table should be mentioned in the article to clarify its function. 7.5.2 Arrangement of table number and table title
There is a space between the table number and the table title. Both should be placed in the center above the table, and the arrangement is shown in the following example: Table 1 Metrological performance requirements
7.5.3 Header and table drawing method
The units used in the table column should be marked on the right side of the header item name. The table drawing method adopts closed style, that is, a border line should be drawn.
Example 1:
Linear density kg/m
Inner diameter mm
Outer diameter mm
When all units in the table are the same, the unit should be marked in the upper right corner of the table, and the last letter (or word) of the unit should be two spaces away from the right side line of the table.
Example 2:
Inner diameter
When the parameters or text contents of two adjacent rows (or two columns) in the table are the same, they should be expressed in a full column. For the data in the table, the decimal points and numbers in the upper and lower rows should be aligned. When there is no content in a column in the table, it should be expressed with a short line of two Chinese characters. 7.5.4 Table continuation
Outer diameter
When the length of a table exceeds one page, the table number should be repeated on each page, and "(Continued)" should be added after the number. Continuation tables should be arranged with a header.
7.6.1 Drawings
Drawings and related graphic symbols should be accurate and clear, and comply with the relevant national regulations on technical drawings and graphic symbols. Only the dimensions, symbols or necessary text descriptions required by the verification regulations should be marked in the drawings. 7
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