JJF 1059.1-2012: Evaluation and expression of uncertainty in measurement

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Scope

a) The general method for evaluating and expressing measurement
uncertainty specified in this specification is applicable to measurement
fields of various accuracy levels, such as.
1) The establishment of national measurement standards and
measurement standards at all levels and the comparison of values;
2) The setting value of standard substance and the release of standard
reference data;
3) Preparation of technical documents such as measurement methods,
verification procedures, verification system tables, calibration
specifications, etc.;
4) Expression of measurement results and measurement capabilities in
measurement qualification recognition, measurement confirmation,
quality certification, laboratory accreditation;
5) Calibration, verification and other measurement services of measuring
instruments;
6) Measurement in the fields of scientific research, engineering, trade
settlement, medical and health care, safety protection, environmental
monitoring, resource protection.
b) This specification mainly concerns the measurement uncertainty of the
measured estimated value that is clearly defined and can be characterized
by a unique value. As for the measured quantity value that appears as a
distribution of a series of values or depends on one or more parameters
(for example, with time as the parameter variable), the description of the
measured quantity value shall be a set of values, the distribution and
relationship shall be given.
c) This specification is also applicable to the evaluation and expression of
uncertainties in the design and theoretical analysis of experiments,
measuring methods, measuring devices, complex components and
systems.
d) This specification mainly applies to the following conditions.
1) It can be assumed that the probability distribution of the input is
symmetrically distributed;
2) It can be assumed that the probability distribution of the output is
approximately normal distribution or t distribution;
3) The measurement model is a linear model, a model that can be
converted into a linear model, or a model that can be approximated by
a linear model.

Basic Data

Standard ID	JJF 1059.1-2012 (JJF1059.1-2012)
Description (Translated English)	Evaluation and expression of uncertainty in measurement
Sector / Industry	Metrology and Measurement Industry Standard
Classification of Chinese Standard	A50
Classification of International Standard	17.020
Word Count Estimation	64,651
Older Standard (superseded by this standard)	JJF 1059-1999
Quoted Standard	JJF 1001-2011; GB/T 70-2008; GB 3101-1993; ISO/IEC GUIDE 98-3-2008; ISO 3534-1-2006; GB/T 4883-2008
Regulation (derived from)	New version of " Evaluation and Expression of Uncertainty in Measurement Technical specifications" released; AQSIQ Announcement No. 199 of 2012
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to the level of accuracy of measurement of various fields. Required by this specification Evaluation and Expression of Uncertainty in Measurement general method, for example: a) Basis of measurement and at all levels of national meas