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JJF 1140-2006

JJF 1140-2006_English: PDF (JJF1140-2006)
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JJF 1140-2006English499 Add to Cart 4 days Calibration Specification for Square Testers JJF 1140-2006 Valid JJF 1140-2006

BASIC DATA
Standard ID JJF 1140-2006 (JJF1140-2006)
Description (Translated English) Calibration Specification for Square Testers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A52
Classification of International Standard 17.040
Word Count Estimation 21,290
Date of Issue 2006/3/8
Date of Implementation 2006-09-08
Older Standard (superseded by this standard) JJG 243-1993
Quoted Standard JJF 1001-1998; JJF 1059-1999; JJF 1094-2002; JB/T 10015-1999; JJG 39-2004; JJG 117-2005; JJG 118-1996; JJG 396-2002
Drafting Organization Shanghai Measurement and Testing Technology Research Institute
Administrative Organization National Technical Committee geometric angle measurement
Regulation (derived from) State Administration of Quality Supervision, Inspection and Quarantine Notice 2006 No. 33
Summary This standard applies to square to check the calibration.

JJF 1140-2006
Calibration Specification for Square Testers
National Metrology Technical Specification of the People's Republic
Square ruler calibration specification
Released on.2006-03-08
2006-09-08 implementation
The General Administration of Quality Supervision, Inspection and Quarantine issued
Square ruler calibration specification
Sq
uareTesters
Replace JJG243-1993
This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine on March 8,.2006, and
Implemented on September 8,.2006.
Focal Point. National Geometric Angle Measurement Technical Committee
Main drafting unit. Shanghai Institute of Metrology and Testing Technology
Participated in the drafting unit. Zhengzhou Quality Inspection Center
This specification is interpreted by the focal point
The main drafters of this specification.
Liao Wei (Shanghai Institute of Metrology and Testing Technology)
Shen Zhize (Shanghai Institute of Metrology and Testing Technology)
Participate in the drafters.
Wang Bozhen (Zhengzhou Quality Inspection Center)
table of Contents
1 range (1)
2 Citations (1)
3 Overview (1)
4 Measurement characteristics (3)
4.1 Indicators (3)
4.2 Force measurement (3)
4.3 Surface roughness of work surface (3)
4.4 Flatness of the working surface of the flat probe (3)
4.5 Flatness of work surface (3)
4.6 Parallelism of the two work surfaces on the left and right (3)
4.7 Verticality of the column guide rail facing the work surface (3)
4.8 Measurement repeatability (3)
4.9 indication error (3)
5 Calibration conditions (3)
5.1 Environmental conditions (3)
5.2 Calibration standard and corresponding equipment (4)
6 Calibration items and calibration methods (4)
6.1 Indicators (4)
6.2 Force measurement (4)
6.3 Surface roughness of work surface (4)
6.4 Flatness of the working surface of the flat probe (4)
6.5 Flatness of work surface (4)
6.6 Parallelism of the two work surfaces on the left and right (5)
6.7 Verticality of the column guide rail facing the work surface (6)
6.8 Measurement repeatability (6)
6.9 indication error (7)
7 Calibration result expression (7)
8 re-study interval (7)
Appendix A Measurement Uncertainty Analysis of Calibration Results of Right Angle Inspection Instrument (8)
Appendix B Example of calculating the flatness of the work surface (14)
Appendix C Outline and technical requirements of standard squares (15)
Appendix D Calibration Certificate Content Requirements (16)
Square ruler calibration specification
1 Scope
This specification applies to the calibration of the square ruler.
2 Citations
This specification refers to the following documents.
JJF 1001-1998 General measurement terms and definitions
JJF 1059-1999 Measurement Uncertainty Evaluation and Representation
JJF 1094-2002 Technical Specifications for Measuring Instrument Characteristics
JB/T 10015-1999 square ruler
JJG39-2004 mechanical comparator verification procedures
JJG117-2005 plate verification procedure
JJG118-1996 Torsion spring type comparator verification procedure
JJG396-2002 Inductance Micrometer Calibration Procedure
Use of this specification should be done with the current valid version of the above cited documents.
3 Overview
The square ruler uses a comparative measurement method or a direct measurement method for measuring accuracy levels of 0 and below.
The perpendicularity of the square. The square ruler can also be called a square ruler, a verticality tester, and the like.
The form and basic parameters of the square ruler are shown in Table 1.
Table 1 Form and basic parameters of the square ruler
No. Basic parameters I type right angle ruler type II right angle ruler
1 Measuring range (63~1000)mm (63~500)mm
2 Measure the accuracy of the square at level 0, level 1, level 2
3 The aperture of the clamp indicator is φ8mm or φ28mm
4 Measurement method Fixed measurement Continuous measurement
5 Indexing scale value ≤ 0.001mm
6 indicator range of indication range ±