JJF 1224-2009
Calibration Specification for Reinforced Concrete Covermeter and Floorslab Thickness Tester (English Version)

Standard No.

JJF 1224-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

National Metrological Technical Specifications of the People's Republic of China

Latest

JJF 1224-2009

Scope

This specification is applicable to the calibration of steel protective layer thickness measuring instruments and floor slab thickness measuring instruments.

JJF 1224-2009 Referenced Document

• GB 50204-2002 Code for acceptance of constructional quality of concrete structures
• JJF 1001-1998 General Terms in Metrology and Their Definitions
• JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement
• JJF 1094-2002 T.S. for Evaluation of the Characteristics of Measuring Instruments*， 2024-04-19 Update

JJF 1224-2009 history

• 2009 JJF 1224-2009 Calibration Specification for Reinforced Concrete Covermeter and Floorslab Thickness Tester
• 1970 JJF 1224-1990 0~2500 Pa pressure benchmark operation technical specification