BSI 14/30298973 DC:2014 Edition
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BS EN 60051-1. Direct acting indicating analogue electrical measuring instruments and their accessories. Part 1. Definitions and general requirements common to all parts
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 56 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | FOREWORD |
| 8 | INTRODUCTION |
| 9 | 1 Scope 2 Normative references |
| 10 | 3 Terms and definitions |
| 13 | 3.1.25 3.1.26 3.1.27 |
| 16 | 3.2.21 3.2.26 3.2.27 |
| 17 | 3.2.29 3.2.30 3.3.1.1 3.3.1.2 |
| 18 | 3.3.15.1 3.3.15.2 |
| 19 | 3.3.16.1 3.3.16.2 |
| 22 | 3.7.6 |
| 23 | 3.9.1 |
| 24 | 4 Description, classification and compliance 4.1 Description 4.1.1 description according to methods of operation or nature 4.1.2 description according to using methods 4.1.3 description according to environmental conditions 4.1.4 description according to mechanical conditions 4.1.5 description according to degrees of protection |
| 25 | 4.2 Classification 4.3 Compliance with the requirements of this standard 5 Requirements 5.1 Reference conditions 5.2 Limits of intrinsic uncertainty, fiducial value 5.2.1 Limits of intrinsic uncertainty 5.2.2 Correspondence between intrinsic uncertainty and accuracy class 5.2.3 Fiducial value |
| 27 | 5.3 Nominal range of use and variations 5.3.1 Nominal range of use |
| 28 | 5.3.2 Limits of variations 5.3.2.1 General 5.3.2.2 Variation due to a magnetic field of external origin 5.3.2.3 Variation due to an electric field of external origin (electrostatic instruments only) |
| 29 | 5.3.2.4 Variation due to ferromagnetic supports 5.3.2.5 Variation due to conductive supports 5.3.3 Conditions for the determination of variations 5.4 Operating uncertainty, overall system uncertainty and variations 5.4.1 Under non-reference conditions, the operating uncertainty of an instrument together with its non-interchangeable accessory(ies) (if any) or accessory is the combination of the intrinsic uncertainty and variations due to every influence quantit… 5.4.2 For the instrument used together with its external interchangeable accessory, instrument, accessory and lead constitute a system, and the overall system uncertainty depends on their respective intrinsic uncertainty and variations. Refer to Ann… 5.5 Electrical requirements 5.5.1 Dielectric intensity and others electrical safe requirements |
| 30 | 5.5.2 Self-heating |
| 31 | 5.5.3 Permissible overloads 5.5.3.1 Continuous overload 5.5.3.2 Overloads of short duration 5.5.4 Limiting operating range of temperature 5.5.5 Deviation from zero 5.5.6 Electromagnetic compatibility (EMC) 5.5.6.1 General 5.5.6.2 Electromagnetic environment of instruments |
| 32 | 5.5.6.3 Test of immunity to electrostatic discharges 5.5.6.4 Test of immunity to electromagnetic RF fields 5.5.6.5 Fast transient burst test 5.5.6.6 Test of immunity to conducted disturbances, induced by radio-frequency fields 5.5.6.7 Surge immunity test 5.5.6.8 Oscillatory waves immunity test |
| 33 | 5.6 Constructional requirements 5.6.1 General constructional requirements 5.6.2 Damping 5.6.2.1 Overshoot 5.6.2.2 Response time 5.6.2.3 Impedance of the external measuring circuit 5.6.3 Sealing to prevent access 5.6.4 Scales 5.6.4.1 Scale divisions |
| 34 | 5.6.4.2 Scale numbering 5.6.4.3 Direction of deflection 5.6.4.4 Limits of the measuring range |
| 35 | 5.6.5 Stopper 5.6.6 Preferred values 5.6.7 Adjusters, mechanical and/or electrical 5.6.7.1 Zero adjuster(s) 5.6.7.2 Span adjuster(s) |
| 36 | 5.6.8 Effects of mechanical actions 5.6.8.1 Vibration test 5.6.8.2 Shock test 5.6.8.3 Response test to vibration and shock (collision) 5.6.9 Mechanical resistance to shock and impact 5.6.10 Resistance to heat and protection against the spread of fire |
| 37 | 5.6.11 Degrees of protection provided by enclosure 5.6.12 Connected terminals 6 Information, markings and symbols 6.1 Information |
| 38 | 6.2 Markings, symbols and their locations |
| 39 | 6.3 Markings relating to the reference values and nominal ranges of use of influence quantities 6.4 The symbols for marking instruments and accessories |
| 43 | 6.5 Markings and symbols for terminals 6.5.1 Requirements for markings |
| 44 | 6.5.2 Earthing (grounding) terminals 6.5.3 Measuring circuit terminals 6.5.4 Special markings for terminals 6.6 Instructions for use |
| 45 | 7 Package and storage 8 Test rules 8.1 Type of test 8.2 Type tests 8.3 Routine tests 8.4 Recurrent tests |
| 46 | 8.5 Nonconformity classification 8.6 Judgement of test results |
| 47 | Annex A (normative) Limits of intrinsic uncertainty and variations |
| 50 | Annex B (informative) Relationship between ambient temperature and relative humidity |
| 51 | Annex C (informative) Intrinsic uncertainty, operating uncertainty and overall system uncertainty C.1 The kinds of uncertainty C.2 Operating uncertainty C.2.1 Estimating absolute operating uncertainty according to type test results |
| 52 | C.2.2 Estimating absolute operating uncertainty according to limit of intrinsic uncertainty and limit of variations due to every influence specified by this standard C.3 Overall system uncertainty |
| 53 | C.4 Fiducial operating uncertainty |
| 54 | Annex D (normative) Routine Tests |
| 55 | Annex E (informative) OVERVOLTAGE CATEGORY |
| 56 | Bibliography |
