BS EN ISO 6789-2:2017
$198.66
Assembly tools for screws and nuts. Hand torque tools – Requirements for calibration and determination of measurement uncertainty
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 52 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 5 | European foreword Endorsement notice |
| 7 | Foreword |
| 8 | Introduction |
| 10 | 1 Scope 2 Normative references 3 Terms, definitions and symbols |
| 11 | 3.1 Terms and definitions 3.2 Symbols, designations and units |
| 13 | 4 Requirements for calibration 4.1 Calibration during use 4.2 Calibration method 4.3 Calibration system |
| 14 | 5 Measurement error 5.1 Calculation of the relative measurement error 5.2 Exemplary calculations of the relative measurement error 5.2.1 Example 1 |
| 15 | 5.2.2 Example 2 |
| 16 | 6 Sources of uncertainty 6.1 General |
| 17 | 6.2 Evaluation of Type B uncertainties due to the torque tool 6.2.1 Scale, dial or display resolution, r |
| 19 | 6.2.2 Variation due to the reproducibility of the torque tool, brep |
| 20 | 6.2.3 Variation due to the interface between the torque tool and the calibration system |
| 21 | 6.2.4 Variation due to the variation of the force loading point, bl |
| 22 | 6.3 Evaluation of Type A uncertainty due to the torque tool 6.3.1 General 6.3.2 Variation due to the repeatability of the torque tool, bre 7 Determination of the calibration result 7.1 Determination of the relative standard measurement uncertainty, w |
| 23 | 7.2 Determination of the relative expanded measurement uncertainty, W 7.3 Determination of the relative measurement uncertainty interval, W’ |
| 24 | 8 Calibration certificate |
| 25 | Annex A (informative) Calculation example for an indicating torque tool (Type I) |
| 34 | Annex B (informative) Calculation example for a setting torque tool (Type II) |
| 43 | Annex C (normative) Minimum requirements for the calibration of the torque measurement device and the estimation of its measurement uncertainty |
| 50 | Bibliography |
