JJG 300-2002 English PDF

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JJG 300-2002: Verification Regulation of Small Angle Testers
Status: Valid

JJG 300: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 300-2002	269	Add to Cart	3 days	Verification Regulation of Small Angle Testers	Valid
JJG 300-1982	199	Add to Cart	2 days	Verification Regulation of Small Angle Tester	Obsolete

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Basic data

Standard ID: JJG 300-2002 (JJG300-2002)
Description (Translated English): Verification Regulation of Small Angle Testers
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A52
Word Count Estimation: 10,150
Date of Issue: 2002-04-02
Date of Implementation: 2002-07-01
Older Standard (superseded by this standard): JJG 300-1982
Quoted Standard: JJF 1001-1998; JJG 1059-1999
Issuing agency(ies): State Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to small angle tester's initial verification, testing and use of the follow-up inspection.

JJG 300-2002: Verification Regulation of Small Angle 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.
Verification Regulation of Small Angle Testers National Metrology Verification Regulations of the People's Republic Small angle checker Released on.2002-04-02 2002-07-01 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Replace JJG 300-1982 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on April 2,.2002, and It will take effect on July 1,.2002. Focal Point. National Geometric Angle Measurement Technical Committee Drafting unit. Shaanxi Institute of Metrology and Testing This regulation entrusts the National Geometrical Angle Measurement Technical Committee to explain The main drafters of this procedure. Zhang Hui (Shaanxi Institute of Metrology and Testing) Chang Qing (Shaanxi Institute of Metrology and Testing)

table of Contents

1 Scope (1) 2 Citations (1) 3 Overview (1) 4 Metrology performance requirements (1) 4.1 Flatness of working surface of reinforced workbench (1) 4.2 Flatness of the working surface of the flat workbench (2) 4.3 Distance between the axes of the two positioning indicators (2) 4.4 Parallelism of the axis of the two positioning indicators (2) 4.5 The coincidence of the spherical apex of the spherical cap with its sleeve axis (2) 4.6 Technical Specifications for Selected Positioning Indicators (2) 5 General technical requirements (2) 5.1 Appearance (2) 5.2 Interaction of various parts (2) 6 measuring instrument control (2) 6.1 Verification conditions (2) 6.2 Verification project (3) 6.3 Verification method (3) 6.4 Processing of verification results (5) 6.5 verification period (5) Small angle checker verification procedure

1 Scope

This procedure applies to the first verification, subsequent verification and in-use inspection of the small angle inspection instrument.

2 Citations

This procedure refers to the following documents. JJF1001-1998 General measurement terms and definitions JJF1059-1999 Measurement Uncertainty Evaluation and Representation Use of this procedure should take care to use the current valid version of the above cited documents.

3 Overview

The small angle checker is a measuring instrument used to generate standard small angles, and the standard angular range produced by it 0'~40', mainly used for verification of self-collimator, image level, electronic level and other measuring instruments, see the working principle figure 1. figure 1 Its principle formula is. θ = arcsin (H/L). Since the angle θ is small, the principle formula can also be written as θ=H/L (unit. radians)

4 Metrological performance requirements

4.1 Flatness of working surface of reinforced workbench It is not more than 1 μm in the range of 60 mm in the center of the table, and is not allowed to be recessed. ......

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