JJF 2221-2025 Active National Metrology Technical Specifications JJF

JJF 2221-2025 Calibration Specification for Apparatus of Transient Measurements of Thermal Conductivity

Publish Date: 2025-03-27 Implement Date: 2025-09-27 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: JJF 2221-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: -

Publish Date: 2025-03-27

Implement Date: 2025-09-27

Pages: 16 pages

Scope

This specification is applicable to the thermal conductivity calibration of thermal conductivity transient measurement instruments of various types, including hotline, tropical, plane heat sources, and thermal bridges. The thermal conductivity measurement range is (0.020～0.20) Wm-1K-1, and the temperature range is (20～60)℃.

Development Information

Word Count: 16 Thousand words Pages: 16 pages

Referenced Standards

JJF 1001-1998 General Terms in Metrology and Their Definitions JJF 1001-2011 General Terms in Metrology and Their Definitions JJF 1007-2007 Temperature Metrological Terms and Their Definitions JJF 1059.1-2012 Evaluation and Expression of Uncertainty in Measurement JJF 1071-2010 The Rules for Drafting National Calibration Specification GB/T 10297-2015 Test method for thermal conductivity of nonmetal solid materials—Hot-wire method GB/T 32064-2015 Determination of thermal conductivity and thermal diffusivity of building materials:transient plane heat source method ISO 22007-1

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