GB/T 39643-2020 Active National standards

GB/T 39643-2020 Geometrical product specifications (GPS)—Systematic errors and contributions to measurement uncertainty of length measurement due to thermal influences

Publish Date: 2020-12-14 Implement Date: 2021-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 39643-2020

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods

ICS Name: Comprehensive measurement of length and angle

Publish Date: 2020-12-14

Implement Date: 2021-07-01

Pages: 36 pages

Scope

This standard specifies the procedures for determining and correcting errors caused by temperature effects in length measurement of products according to the Geometrical Product Specifications (GPS), as well as the procedures for evaluating the measurement uncertainty components introduced by temperature effects.
This standard applies to length measurement in the industrial field.
Note 1: Temperature effects include: the average temperature is the standard reference temperature; the average temperature is not the standard reference temperature, and the average value takes into account changes in time and space; the temperature changes over time.
Note 2: Three scenarios need to be considered: the average temperature is the standard reference temperature; the average temperature is not the standard reference temperature, and the user makes corrections; the average temperature is not the standard reference temperature, and the user does not make corrections.
Note 3: According to the analysis of GB/T 18779.2, thermal effects are an important factor causing measurement uncertainty and systematic errors. This standard clarifies that temperature effects are an important source of measurement uncertainty and a significant factor in the formation of systematic errors through a more professional and detailed analysis of temperature effects. Although the temperature gradient is not discussed in detail, some information is provided in Appendix A.