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JJF 1001-2011: General Terms in Metrology and Their Definitions
JJF 1001-2011
JJF
METEROLOGICAL TECHNICAL SPECIFICATION
OF THE PEOPLE’S REPUBLIC OF CHINA
General terms in metrology and their definitions
ISSUED ON: NOVEMBER 30, 2011
IMPLEMENTED ON: MARCH 01, 2012
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of PRC
Table of Contents
Introduction ... 12
1 Scope ... 14
2 Normative references ... 14
3 Quantity and unit ... 14
3.1 Quantity [VIM1.1] ... 14
3.2 System of quantities [VIM1.3]... 15
3.3 International system of quantities, ISQ [VIM1.6] ... 15
3.4 Base quantity [VIM1.4] ... 16
3.5 Derived quantity [VIM1.5] ... 16
3.6 Dimension of a quantity [VIM1.7] ... 16
3.7 Quantity of dimension one [VIM1.8] ... 18
3.8 Measurement unit [VIM1.9] ... 18
3.9 Symbol of measurement unit ... 19
3.10 System of units [VIM1.13] ... 19
3.11 Coherent derived unit [VIM1.12] ... 19
3.12 Coherent system of units [VIM1.14] ... 20
3.13 International System of Units (SI) [VIM1.16] ... 20
3.14 Legal unit of measurement ... 21
3.15 Base unit [VIM1.10] ... 22
3.16 Derived unit [VIM1.11] ... 22
3.17 Off-system measurement unit [VIM1.15] ... 22
3.18 Multiple unit [VIM1.17] ... 23
3.19 Submultiple of a unit [VIM1.18] ... 23
3.20 Quantity value [VIM1.19] ... 24
3.21 True quantity value, true value of quantity [VIM2.11] ... 25
3.22 Conventional quantity value [VIM2.12] ... 25
3.23 Numerical quantity value, numerical value of quantity [VIM1.20] ... 26
3.24 Quantity equation [VIM1.22] ... 26
3.25 Unit equation [VIM1.23] ... 27
3.26 Conversion factor between units [VIM1.24] ... 27
3.27 Numerical value equation [VIM1.25] ... 27
3.28 Ordinal quantity [VIM1.26] ... 28
3.29 Quantity-value scale [VIM1.27] ... 28
3.30 Ordinal quantity-value scale [VIM1.28] ... 28
3.31 Conventional reference scale [VIM1.29] ... 29
3.32 Nominal property [VIM1.30] ... 29
4 Measurement ... 29
4.1 Measurement [VIM2.1] ... 29
4.2 Metrology ... 30
4.3 Metrology [VIM2.2] ... 30
4.4 Measurement principle [VIM2.4] ... 30
4.5 Measurement method [VIM2.5] ... 30
4.6 Measurement procedure [VIM2.6] ... 31
4.7 Measurand [VIM2.3] ... 31
4.8 Influence quantity [VIM2.52] ... 32
4.9 Comparison ... 33
4.10 Calibration [VIM2.39] ... 33
4.11 Calibration diagram [VIM4.30] ... 34
4.12 Calibration curve [VIM4.31] ... 34
4.13 Calibration hierarchy [VIM2.40] ... 34
4.14 Metrological traceability [VIM2.41] ... 35
4.15 Metrological traceability chain [VIM2.42] ... 36
4.16 Metrological traceability to a measurement unit [VIM2.43] ... 36
5 Measurement results ... 37
5.1 Measurement result, result of measurement [VIM2.9] ... 37
5.2 Measured quantity value [VIM2.10] ... 37
5.3 Measurement error, error of measurement [VIM2.16] ... 38
5.4 Systematic measurement error, systematic error of measurement [VIM2.17]
... 38
5.5 Measurement bias [VIM2.18] ... 39
5.6 Random measurement error, random error of measurement [VIM2.19] ... 39
5.7 Correction [VIM2.53] ... 39
5.8 Measurement accuracy, accuracy of measurement [VIM2.13] ... 40
5.9 Measurement trueness, trueness of measurement [VIM2.14] ... 40
5.10 Measurement precision [VIM2.15] ... 40
5.11 Intermediate precision condition of measurement [VIM2.22] ... 41
5.12 Intermediate measurement precision [VIM2.23] ... 41
5.13 Measurement repeatability [VIM2.21] ... 42
5.14 Measurement repeatability condition of measurement [VIM2.20] ... 42
5.15 Measurement reproducibility condition of measurement [VIM2.24] ... 42
5.16 Measurement reproducibility [VIM2.25] ... 42
5.17 Experimental standard deviation ... 43
5.18 Measurement uncertainty, uncertainty of measurement [VIM2.26] ... 43
5.19 Standard uncertainty [VIM2.30] ... 44
5.20 Type A evaluation of measurement uncertainty [VIM2.28] ... 44
5.21 Type B evaluation of measurement uncertainty [VIM2.29] ... 44
5.22 Combined standard uncertainty [VIM2.31] ... 45
5.23 Relative standard uncertainty [VIM2.32] ... 45
5.24 Definitional uncertainty [VIM2.27] ... 45
5.25 Uncertainty report [VIM2.33] ... 46
5.26 Target uncertainty [VIM2.34] ... 46
5.27 Expanded uncertainty [VIM2.35] ... 46
5.28 Coverage interval [VIM2.36] ... 46
5.29 Coverage probability [VIM2.37] ... 47
5.30 Coverage factor [VIM2.38] ... 47
5.31 Measurement model, model of measurement [VIM2.48] ... 47
5.32 Measurement function [VIM2.49] ... 47
5.33 Input quantity in a measurement model [VIM2.50] ... 48
5.34 Output quantity in measurement model [VIM2.51] ... 48
5.35 Metrological comparability of measurement results [VIM2.46] ... 48
5.36 Metrological compatibility of measurement results [VIM2.47] ... 49
6 Measuring instruments ... 50
6.1 Measuring instrument [VIM3.1] ... 50
6.2 Measuring system [VIM3.2] ... 50
6.3 Indicating measuring instrument [VIM3.3] ... 50
6.4 Displaying measuring instrument [VIM3.4] ... 50
6.5 Material measure [VIM3.6] ... 51
6.6 Measuring equipment ... 51
6.7 Measuring transducer [VIM3.7] ... 51
6.8 Sensor [VIM3.8] ... 51
6.9 Detector [VIM3.9] ... 52
6.10 Measuring chain [VIM3.10] ... 52
6.11 Displayer ... 53
6.12 Recorder ... 53
6.13 Index ... 53
6.14 Scale of measuring instrument ... 53
6.15 Scale length ... 53
6.16 Scale division ... 54
6.17 Scale spacing ... 54
6.18 Scale interval ... 54
6.19 Adjustment of a measuring system [VIM3.11] ... 54
6.20 Zero adjustment of a measuring system [VIM3.12] ... 55
7 Property of measuring instruments ... 55
7.1 Indication [VIM4.1] ... 55
7.2 Blank indication [VIM4.2] ... 55
7.3 Indication interval [VIM4.3] ... 55
7.4 Nominal quantity value [VIM4.6] ... 56
7.5 Nominal indication interval [VIM4.4] ... 56
7.6 Range of a nominal indication interval, span of a nominal indication interval
[VIM4.5] ... 56
7.7 Measuring interval [VIM4.7]... 57
7.8 Steady state operating condition [VIM4.8] ... 57
7.9 Rated operating condition [VIM4.9] ... 57
7.10 Limiting operating condition [VIM4.10] ... 57
7.11 Reference operating condition [VIM4.11] ... 58
7.12 Sensitivity of a measuring system [VIM4.12] ... 58
7.13 Selectivity of a measuring system [VIM4.13] ... 58
7.14 Resolution [VIM4.14] ... 59
7.15 Resolution of a display device [VIM4.15] ... 60
7.16 Discrimination threshold [VIM4.16] ... 60
7.17 Dead band [VIM4.17] ... 60
7.18 Detection limit, limit of detection [VIM4.18] ... 60
7.19 Stability of a measuring instrument [VIM4.19] ... 60
7.20 Instrument bias [VIM4.20] ... 61
7.21 Instrument drift [VIM4.21] ... 61
7.22 Variation due to an influence quantity [VIM4.22] ... 61
7.23 Step response time [VIM4.23] ... 61
7.24 Instrumental measurement uncertainty [VIM4.24] ... 62
7.25 Null measurement uncertainty [VIM4.29] ... 62
7.26 Accuracy class [VIM4.25] ... 62
7.27 Maximum permissible measurement errors [VIM4.26] ... 63
7.28 Datum measurement error [VIM4.27] ... 63
7.29 Zero error [VIM4.28] ... 63
7.30 Intrinsic error ... 63
7.31 Fiducially error ... 63
7.32 Error of indication ... 64
8 Measurement standards ... 64
8.1 Measurement standard, etalon [VIM5.1] ... 64
8.2 International measurement standard [VIM5.2] ... 65
8.3 National measurement standard [VIM5.3] ... 65
8.4 Primary measurement standard [VIM5.4] ... 66
8.5 Secondary measurement standard [VIM5.5] ... 66
8.6 Reference measurement standard [VIM5.6] ... 67
8.7 Working measurement standard [VIM5.7] ... 67
8.8 Traveling measurement ...