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JJF 1334-2012 PDF English

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JJF 1334-2012: Calibration Specification for Concrete Crack Width and Depth Measuring Instruments
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JJF 1334: Historical versions

Std IDVersionUSDBuyDeliver [PDF] inTitle (Description)
JJF 1334-2012English439 Add to Cart 4 days [Need to translate] Calibration Specification for Concrete Crack Width and Depth Measuring Instruments
JJF 1334-1990English199 Add to Cart 2 days [Need to translate] O.T.N. of Specular Gloss Primary Standard

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Basic data

Standard ID JJF 1334-2012 (JJF1334-2012)
Description (Translated English) Calibration Specification for Concrete Crack Width and Depth Measuring Instruments
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A52
Classification of International Standard 17.040
Word Count Estimation 19,115
Quoted Standard JJF 1001-2011; JJF 1059-1999; GB 50204-2002
Regulation (derived from) AQSIQ Announcement No. 35 of 2012
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to the measurement surface width (0. 01 ~ 10) mm, depth (35 ~ 500) mm concrete crack width and depth gauge calibration.

JJF 1334-2012: Calibration Specification for Concrete Crack Width and Depth Measuring Instruments




---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Concrete Crack Width and Depth Measuring Instruments People's Republic of China National Metrology Technical Specifications Concrete crack width and depth gauge calibration specification Issued on. 2012-03-02 2012-06-02 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Concrete crack width and depth Measuring instrument calibration specification Measuring Instruments NFP. National Engineering Geometrical Parameters Measurement Technology Committee Main drafting unit. Chongqing Institute of Metrology and Quality Inspection Beijing Institute of Metrology detection Jiangsu Province Institute of Metrology Participated in the drafting unit. Chengdu metrological supervision and verification testing hospital Shaanxi Provincial Academy of Building Research China Testing Technology Research Institute This specification project commissioned by the National geometric parameter measurement technology committee responsible for the interpretation The main drafters of this specification. Zhong Hua (Chongqing Institute of Metrology and Quality Inspection) Tao Lei (Chongqing Institute of Metrology and Quality Inspection) Sun Jing Yi (Beijing Institute of Metrology detection) Goal Orientation (Jiangsu Province Institute of Metrology) Drafters participate. Liu Jin (Chengdu metrological supervision and verification testing hospital) Zhang Yang (Shaanxi Provincial Academy of Building Research) Ran Qing (China Testing Technology Research Institute)

table of Contents

1 Scope (1) 2. References (1) 3 Overview (1) 4 Metrological characteristics (2) 4.1 Repeatability (2) 4.2 Indication error (2) 4.3 instrument comes standard board width and depth of the standard blocks (3) Calibration Condition 5 (3) Environmental conditions 5.1 (3) 5.2 Calibration with a standard device and other equipment (3) 6 calibration items and calibration methods (4) 6.1 Repeatability (4) 6.2 Indication Error (4) 6.3 instrument comes standard board width and depth of the standard blocks (5) 7 Calibration result expression (5) 8 Recalibration interval (5) Measurement Uncertainty Appendix A crack width measuring instrument error of indication (division value category) (6) Measurement Uncertainty Appendix B crack depth gauge indication error (8) Appendix C calibration standard's technical requirements (11) Appendix D calibration certificate content and in-page format (13) Concrete crack width and depth gauge calibration specification

1 Scope

This standard applies to the measurement surface width (0.01 ~ 10) mm, depth (35 ~ 500) mm concrete crack Stitch width and depth gauge calibration. 2. References This specification references the following documents. JJF 1001-2011 common measurement terms and definitions JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement Construction quality concrete structures GB 50204-2002 acceptance For dated references, only the dated edition applies to this specification; undated reference documents Member, the latest edition (including any amendments) applies to this specification.

3 Overview

Concrete crack width and depth gauge is used to detect concrete crack width and depth of the non-destructive measuring instruments, Mainly applicable to the construction industry. According to their functions into concrete crack width measuring instrument, concrete crack depth measurement Meter of concrete cracks and integrated measuring instrument. Concrete crack width measuring instrument is the use of electronic imaging technology, imaging surface cracks on the instrument display on the screen, Ruler measuring instruments on the use of the crack width of the screen, or by automatic measurement software, directly to the value of crack width was Shown on the screen. see picture 1.

1 crack width measuring instrument working schematic diagram

1- host; 2- Cable; 3-CCD probe; 4 - the standard width plate; 5- ruler; 6- display ...

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