JJF 1140-2006 English PDF

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JJF 1140-2006: Calibration Specification for Square Testers
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1140-2006	549	Add to Cart	4 days	Calibration Specification for Square Testers	Valid

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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: 21,252
Date of Issue: 3/8/2006
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Older Standard (superseded by this standard): JJG 243-1993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
Regulation (derived from): State Administration of Quality Supervision, Inspection and Quarantine Notice 2006 No. 33
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to square to check the calibration.

JJF 1140-2006: Calibration Specification for Square Testers

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
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 Scope (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 ±0.05mm Type I square ruler (common shape is shown in Figure 1). The table is fixed at the left and right ends or one end is fixed. Fixed, one end adjustable, the instrument has a reversing device. Type II square ruler (common shape as shown in Figure 2) The table is a one-piece type, and the instrument has no reversing device. ......

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