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JJF 1071-2010 (JJF1071-2010)

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Standard ID JJF 1071-2010 (JJF1071-2010)
Description (Translated English) The rules for drafting national calibration specification
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A50
Classification of International Standard 17.020
Word Count Estimation 27,218
Date of Issue 2010-11-05
Date of Implementation 2011-05-05
Older Standard (superseded by this standard) JJF 1071-2000
Quoted Standard JJF 1059; JJF 1069-2007; GB/T 1.1-2009; GB 3102.1; GB/T 14691; GB/T 15834; GB/T 15835; GB/T 20001.1
Drafting Organization Shanghai Measurement and Testing Technology
Administrative Organization National Technical Committee of Legal Metrology management
Summary This standard applies to the preparation of national measurement and calibration specifications. Various types of laboratory calibration specifications may refer to prepare.

JJF 1071-2010: PDF in English
JJF 1071-2010
The Rules for Drafting National Calibration Specification
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China
Table of Contents
Introduction ... 6
1 Scope ... 7
2 Normative references ... 7
3 General ... 7
3.1 General principles for drafting specification ... 7
3.2 Basic requirements for normative expression ... 8
4 Structure of specification ... 8
5 Each part of Specification ... 9
5.1 Cover ... 9
5.2 Title page ... 9
5.3 Table of contents ... 9
5.4 Introduction ... 10
5.5 Scope ... 10
5.6 References ... 10
5.7 Terminology and units of measurement ... 10
5.8 Overview ... 11
5.9 Metrological characteristics ... 11
5.10 Calibration conditions ... 11
5.11 Calibration items and methods ... 12
5.12 Calibration results ... 12
5.13 Recalibration interval ... 13
5.14 Annex ... 13
5.15 Additional information ... 14
6 Hierarchical division ... 14
6.1 Clause... 14
6.2 Article... 14
6.3 Paragraph ... 15
6.4 Annex ... 15
7 Editing rules ... 15
7.1 Footnote ... 15
7.2 Notes in article ... 15
7.3 Notes in table or figure ... 16
7.4 Item description ... 16
7.5 Table ... 16
7.6 Figure ... 18
7.7 Citing method ... 18
7.8 Mathematical formula ... 20
7.9 Expression of numerical values ... 20
7.10 Abbreviation ... 21
7.11 Notation of values and units ... 21
7.12 Punctuation marks and simplified Chinese characters ... 21
7.13 Eyebrow line ... 21
7.14 End line ... 21
7.15 Font and font size for specification ... 21
Annex A Front and back cover format ... 23
Annex B Title page format ... 25
Annex C Format for table of contents ... 27
Annex D Example of hierarchy numbering ... 28
Annex E Example of clause and article layout ... 29
Annex F Font size and font of specification ... 32
The Rules for Drafting National Calibration Specification
1 Scope
This Rules applies to the preparation of national metrology and calibration
specifications. Calibration specifications for various laboratories can be compiled by
using it as reference.
2 Normative references
This Rules refers to the following documents:
JJF 1059, Evaluation and Expression of Uncertainty in Measurement
JJF 1069-2007, Rules for the Examination of the Service of Legal Metrological
GB/T 1.1-2009, Directives for standardization - Part 1: The structure and drafting
of standards
GB 3102.1, Quantities and units of space and time
GB/T 14691, Technical drawings - Lettering
GB/T 15834, General rules for punctuation
GB/T 15835, General rules for writing numerals in public texts
GB/T 20001.1, Rules for drafting standards - Part 1: Terminology
For dated references, only the edition cited applies. For undated references, the latest
edition of the referenced document (including any amendments) applies to this Rules.
3 General
3.1 General principles for drafting specification
The National Calibration Specification is formulated and approved by the Metrology
Administration Department of the State Council. It is implemented nationwide and
serves as a technical document for calibration. The Calibration Specification should:
- Comply with relevant national laws and regulations;
- The scope of application should be clear. Within the scope defined by it, it shall
strive for completeness as needed;
- Fully consider the rationality of technology and economy. Leave room for the latest
3.2 Basic requirements for normative expression
- The written expression should be rigorous in structure, clear in hierarchy, precise
in wording, and clear in description. It shall not cause different understandings.
- The terms, symbols, codes and abbreviations used should be unified. They always
express the same concept.
- Express the name and symbol of the measurement unit, the name and symbol of
the quantity, the name and symbol of the error and measurement uncertainty
according to the national regulations.
- The formulas, drawings, tables, and data should be expressed accurately and as
- The expressions of the relevant content of the specification should be coordinated
and consistent. They should not be contradictory.
4 Structure of specification
The specification consists of the following parts:
Title page
Table of contents
Terminology and units of measurement
Metrological characteristics
Calibration conditions
numerals are used for page numbers beginning with the text of the specification. See
Annex C for its writing format.
5.4 Introduction
The introduction is not numbered. It should include the following: the rules on which
the specification is based; the extent or circumstances of the adoption of international
recommendations, international documents or international standards. If the
specification is revised, the following should also be included: a description of all or
part of other documents replaced by the specification; the number and name of the
replaced specification or other documents are given, and the main technical changes
compared with the previous version are listed; the release status of previous versions of
the replaced specification.
5.5 Scope
It mainly describes the scope of application of the specification, so as to clearly define
the subject of the specification. For example, this specification applies to the calibration
of ×× measuring instruments (×× range, scope).
5.6 References
The references should be indispensable documents when compiling the specification.
If not referred, the specification cannot be implemented. The references should be
official publications. When citing a document, the number of the document should be
given (when citing a standard, the standard code and sequence number) and the
complete file name should be given. For dated references, only the dated version applies
to this Specification. For undated references, it should be noted that "the latest version
(including all amendments) applies to this Specification".
When citing an international document, the Chinese translation name should be given
after the serial number (year). Give the original text name in parentheses after it.
The order in which the documents are listed is as follows: national metrology technical
regulations, national standards, industry standards, international proposals,
international documents, international standards. The above documents are arranged in
5.7 Terminology and units of measurement
When the specification involves the terms that have not been specified by the country,
the necessary definitions should be given in this chapter.
Terminology entries should include the following: entry codes, terminology, English
equivalents (except for proper nouns, all English equivalents use lowercase letters,
nouns are singular, and verbs are original forms), definitions. The drafting method
should meet the requirements of GB/T 20001.1.
To make the specification easier to understand, reference may also be made to defined
The content should be introductory words and terminology entries (list). Introductory
words are instructions before specific terms and definitions are given.
For example: In this Specification, if not only the terms and definitions are defined, but
also the terms and definitions defined in other documents are cited, then the
introductory words shall be: "...the terms and definitions defined in … as well as the
followings apply to this Specification".
If the term refers to another document, the number of this document should be given in
The measurement unit uses the national legal measurement unit.
The measurement unit refers to the unit's name and symbol of the main measurement
characteristics of the measuring instrument described in the specification. The
conversion relationship of similar measurement units can be listed when necessary.
5.8 Overview
It mainly briefly describes the purpose, principle and structure of the object to be
calibrated (including the necessary structural diagram). If the principle and structure of
the object to be calibrated are relatively simple, this element can be omitted.
5.9 Metrological characteristics
This part specifies the metrological characteristics of the object to be calibrated. All
possible indications or quantities of the object to be calibrated should be included. By
calibration of the metrological characteristics specified in this article, the metrological
performance of the instrument being calibrated can be determined.
5.10 Calibration conditions
5.10.1 Environmental conditions
They refer to the environmental conditions during calibration activities that have an
impact on the measurement results. When possible, the environmental conditions
necessary to ensure the normal operation of (measurement) standards and objects to be
calibrated during calibration activities, such as temperature, relative humidity, air
g) Date of calibration. If it is related to the validity and application of the calibration
results, the date of receipt of the calibrated object should be stated;
h) If it is related to the validity application of the calibration results, the sampling
procedure of the sample to be calibrated shall be explained;
i) Identification of the technical specification on which the calibration is based,
including name and code;
j) Description of the traceability and validity of the measurement standards used in
this calibration;
k) Description of calibration environment;
l) Statement of calibration results and measurement uncertainties;
m) Explanation of deviations from calibration specification;
n) Signature, title or equivalent identification of the person who issues the calibration
certificate or calibration report;
o) Statement that the calibration results are only valid for the subject being calibrated;
p) Statement of the certificate may not be reproduced in part without the written
approval of the laboratory.
5.13 Recalibration interval
The specification can make suggestions on recalibration intervals with certain scientific
basis for reference. It shall indicate that since the recalibration time interval is
determined by various factors such as the use of the instrument, the user, and the quality
of the instrument itself, the sender can independently determine the recalibration time
interval according to the actual use situation.
5.14 Annex
Annex is an important part of the specification. Annexes may include: the content of
calibration records, the content of the inside pages of calibration certificates and other
forms, recommended calibration methods, relevant procedures or diagrams, and
relevant reference data, etc.
An example of the evaluation of measurement uncertainty should be given in the annex.
Examples of measurement uncertainty assessment should meet the requirements of JJF
1059 "Evaluation and Expression of Uncertainty in Measurement", including sources
of uncertainty and their classifications, formulas and expressions for uncertainty
next level to compile the article. Each first-level article should be given a title. After the
serial number, leave a space for Chinese characters before writing the title, which
occupies a separate line and is separated from the subsequent articles. Whether the other
levels are with or without the titles can be determined according to the needs. When
there is no title, a space for a Chinese character after the number of the article is used
to arrange the article.
6.3 Paragraph
A paragraph is an unnumbered hierarchy within a chapter or article. The first line of a
paragraph should be indented two spaces on the left side of the page. Top row when
6.4 Annex
Each annex should start on a separate page.
Annexes should be numbered sequentially with English capital letters starting with A,
but with I and O removed. The word "Annex" is followed by the letter indicating its
order. "Annex ×" is located in the top grid from the left. On the next line, center the title
of the annex. The number of the annex should be added in front of the number of clauses,
articles, tables and figures of the annex.
7 Editing rules
7.1 Footnote
Footnotes give additional information, but their use should be kept to a minimum.
Footnotes should be at the bottom left of the page. Separate the footnote from the main
text by a short thin horizontal line. The line length is one quarter of the layout width.
Footnotes are usually distinguished by consecutive Arabic numerals with circles ①, ②,
③ etc. Each page is renumbered starting from 1. The method of marking footnotes in
the text is to mark the same numbers ①, ②, ③ etc. in the upper right corner of the
relevant words or sentences.
7.2 Notes in article
The notes in the article are only for the necessary explanation for understanding the
article. Its writing should start on a new line, after the article to be explained.
When there is only one note, the title "Note:" shall be followed by a line of notes. If
there are more than one note at the same time, the title of the first line is "Note:". Edit
the comment clause from the second line. Each note is numbered with Arabic numerals
1, 2, 3, etc. Write on a separate line.
The title "Note:" should be indented by two spaces. When the comment clause moves,
it is flush with the text position where it starts writing.
7.3 Notes in table or figure
Table notes should be placed within the borders of the tables concerned. Figure notes
should be placed in the center below the relevant figure title. Use a separate numbering
sequence for the "Note" of each table and each figure.
7.4 Item description
Item descriptions may begin with a complete sentence followed by a colon (see
Example 1). Or start with the first half of a sentence. Do not add a colon (see Example
2). Complete the sentence by explaining the items in the following columns.
Example 1:
This specification gives requirements applicable to the following measurement systems
or devices:
- Motor vehicle overspeed automatic monitoring system;
- Motor vehicle radar speedometer.
Example 2:
The specification shall:
- Comply with relevant national laws and regulations;
- The scope of application should be specified according to the actual needs of
calibration to ensure the traceability of the value;
- Fully consider the rationality of technology and economy and leave room for the
adoption of the latest technology.
Each column description should be preceded by a dash. When the description of the
column item is shifted, it should be arranged in the top grid.
7.5 Table
7.5.1 Serial number
All continuation tables shall be arranged with headers.
7.6 Figure
7.6.1 Drawing
Drawings and related graphic symbols should be accurate and clear and comply with
the relevant national regulations on technical drawing and graphic symbols. Only the
dimensions, symbols or necessary text descriptions required by the calibration
specifications are marked on the drawings.
7.6.2 Numbering
Figures should be numbered with Arabic numerals starting from 1. The numbering
should be independent of the numbering of clauses and tables. When there is only one
figure, it should be marked as "Figure 1". Each figure should be mentioned in the text
to clarify its role.
7.6.3 Figure caption layout
Figure captions should be centered below the figure. Its layout is shown in the following
Figure 1 -- Instrument details
7.6.4 Selection of symbols
The symbols used to represent the general angular and linear quantities in the figure
should follow the relevant provisions of the national standard GB 3102.1. Subscripts
are used where necessary to distinguish different applications of a given symbol.
Example: When drawing, use L1, L2, L3, etc. as symbol series of different lengths,
instead of using such as A, B, C or a, b, c, etc.
7.6.5 Fonts
The fonts on the illustrations shall comply with the relevant provisions of the national
standard GB/T 14691 on technical drawing.
Symbols for quantity are italicized. Symbols representing units or abbreviations in
foreign languages are in regular style. Subscripts should also follow this principle.
7.7 Citing method
Whenever possible, the method of citing specific parts of the published literature should
be adopted instead of repeating the cited original material. If repetition is necessary, the
source of this material should be indicated in square brackets.
For example: the noun term "comparison" is quoted in the specification, which should
be expressed in the text as follows:
Under specified conditions, the process of comparing the magnitude values reproduced
by the same measuring instrument with the same accuracy class or specified uncertainty
range. [JJF 1069-2007, Terms and Definitions 3.9]
Citations should take the form below without citing page numbers.
[JJF 1069-2007, Terms and Definitions 3.9]
7.7.1 References to the specification itself
In general, it is mentioned in the form of "this Specification...".
7.7.2 Citing certain terms in the text
For example, use the following form:
- "According to Clause 3...";
- "According to 3.1...";
- "According to the detailed rules given in 3.1.1...";
- "See Annex B";
It is not necessary to use the word "article".
7.7.3 Citing tables and figures
Every table and every figure in the specification shall be mentioned in the text. For
example, use the following form:
- "Given in Table 2...";
- "(See Table 2)";
- "(See Figure 3)".
7.7.4 Citing relevant content from other bibliography
Citations must be authoritative.
When citing, its number should be indicated.
References to specific clauses in other documents should use the form given in 8.7.2 or
8.7.3. At the same time, indicate the number of the referenced document before the