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GB/T 18779.5-2020Geometrical product specifications(GPS). Inspection by measurement of workpieces and measuring equipment - Part 5: Uncertainty in verification testing of indicating measuring instruments (English PDF)

产品几何技术规范（GPS）工件与测量设备的测量检验第5部分：指示式测量仪器的检验不确定度

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 14, 2020

Implementation date

July 1, 2021

Scope

GB/T 18779.5-2020 is the English-translated version of 产品几何技术规范（GPS）工件与测量设备的测量检验第5部分：指示式测量仪器的检验不确定度.

GB/T 18779.5-2020 is the Chinese standard "Geometrical product specifications(GPS). Inspection by measurement of workpieces and measuring equipment - Part 5: Uncertainty in verification testing of indicating measuring instruments".

Its scope clause reads: This part of GB/T 18779 specifies the concept and terminology for evaluating the uncertainty of detection values: Inspection of GPS-indicating measuring instruments In the test, the test value is obtained through the instrument according to the test agreement reached between the institutions: Note: The measurement uncertainty of the measured value is different from the measurement uncertainty caused by the indicating measuring instrument when measuring the workpiece: In this part of GB/T 18779 only Involving the former: For the latter, see JJF1059:1 and GB/T 18779:2: When the inspection of an indicating measuring instrument includes multiple detection values, some are related to the instrument display value, and some are related to other measurement characteristics: Off, this part of GB/T 18779 only involves the former: This section specifies how to evaluate the uncertainty of the test value after the test protocol is determined, and does not involve the applicability of the test protocol: This section applies to all specifications of the indicating measuring instrument in the GPS general standard (see GB/T 20308):. Its clauses include terms and definitions.

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Document preview — GB/T 18779.5-2020

National Standard of the People's Republic of China

ICS: 17.040.40
Classification: J 42

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General
5 measured
6 Responsibility criteria of testing party
7 Specific problems in the detection of indicating measuring instruments
Appendix A (informative appendix) Guidelines for using alternative testing equipment
Appendix B (informative appendix) and GPS matrix model relationship

1 Scope

This part of GB/T 18779 specifies the concept and terminology for evaluating the uncertainty of detection values: Inspection of GPS-indicating measuring instruments

In the test, the test value is obtained through the instrument according to the test agreement reached between the institutions:

Note: The measurement uncertainty of the measured value is different from the measurement uncertainty caused by the indicating measuring instrument when measuring the workpiece: In this part of GB/T 18779 only

Involving the former: For the latter, see JJF1059:1 and GB/T 18779:2:

When the inspection of an indicating measuring instrument includes multiple detection values, some are related to the instrument display value, and some are related to other measurement characteristics:

Off, this part of GB/T 18779 only involves the former:

This section specifies how to evaluate the uncertainty of the test value after the test protocol is determined, and does not involve the applicability of the test protocol:

This section applies to all specifications of the indicating measuring instrument in the GPS general standard (see GB/T 20308):

2 Normative references

The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article

Pieces: For undated references, the latest version (including all amendments) applies to this document:

GB/T 16857:1 Technical Specification for Product Geometrical Quantities (GPS) Acceptance Testing and Re-inspection Testing of Coordinate Measuring Machines Part 1: Words

Exchange (GB/T 16857:1-2002, eqvISO 10360-1:2000)

GB/T 18779:1 Technical Specification for Product Geometrical Quantity (GPS) Measurement Inspection of Workpieces and Measuring Equipment Part 1: Inspection According to Specifications

Rules for determining qualified or unqualified inspection (GB/T 18779:1-2002, eqvISO 14253-1:1998)

GB/T 18779:6 Product Geometric Technical Specification (GPS) Measurement Inspection of Workpieces and Measuring Equipment Part 6: Instruments and Workpieces

General rules for acceptance/rejection (GB/T 18779:6-2020, ISO /T R14253-6:2012, MOD)

GB/T 24634 Product Geometric Technical Specification (GPS) General concepts and requirements for GPS measuring equipment (GB/T 24634-2009,

ISO 14978:2006, IDT)

GB/T 24637:2 Product Geometric Technical Specification (GPS) General Concepts Part 2: Basic Principles, Specifications, Operational Sets and Uncertainties

Fixed degree (GB/T 24637:2-2020, ISO 17450-2:2012, MOD)

JJF1001-2011 General measurement terms and definitions

JJF1059:1-2012 Measurement Uncertainty Evaluation and Expression

3 Terms and definitions

GB/T 16857:1, GB/T 18779:1, GB/T 18779:6, GB/T 24634, GB/T 24637:2, JJF1001-2011,

The following terms and definitions defined in JJF1059:1-2012 apply to this document:

3:1

Test (For GPS-indicating measuring instruments) Measurement preparations, measurements, mathematical calculations and decision-making actions based on the detection protocol: […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 29 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 16857 · GB/T 18779 · ISO 14978 · GB/T 24637 · ISO 17450

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