HOME Cart(0) Quotation About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (18 Oct 2025)

JJF 1224-2009 English PDF

US$309.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1224-2009: Calibration Specification for Reinforced Concrete Covermeter and Floorslab Thickness Tester
Status: Valid

JJF 1224: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1224-2009	English	309	Add to Cart	3 days [Need to translate]	Calibration Specification for Reinforced Concrete Covermeter and Floorslab Thickness Tester	Valid	JJF 1224-2009
JJF 1224-1990	English	279	Add to Cart	3 days [Need to translate]	O.T.N.for Pressure Primary Standard in the Range from 0 to 2500Pa	Obsolete	JJF 1224-1990

PDF similar to JJF 1224-2009

Standard similar to JJF 1224-2009

JJG 1114 JJF 1280 JJF 1126 JJF 1233 JJF 1215 JJF 1214

Basic data

Standard ID	JJF 1224-2009 (JJF1224-2009)
Description (Translated English)	Calibration Specification for Reinforced Concrete Covermeter and Floorslab Thickness Tester
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A52
Classification of International Standard	17.040
Word Count Estimation	13,177
Date of Issue	2009-07-10
Date of Implementation	2009-10-10
Quoted Standard	JJF 1001-1998; JJF 1059-1999; JJF 1094-2002; GB 50204-2002
Regulation (derived from)	AQSIQ Announcement No. 78 of 2009
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to reinforced protective layer thickness measuring instrument and the slab thickness measuring instrument calibration.

JJF 1224-2009: Calibration Specification for Reinforced Concrete Covermeter and Floorslab Thickness Tester

---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 Reinforced Concrete Covermeter and Floorslab Thickness Tester People's Republic of China National Metrology Technical Specifications Reinforced protective layer, floor thickness Measuring instrument calibration specification Posted 2009-07-10 2009-10-10 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Reinforced protective layer, floor thickness Measuring instrument calibration specification This specification by the State Administration of Quality Supervision, Inspection and Quarantine approved on July 10, 2009, and from From October 10, 2009 into effect. NFP. National Engineering Geometrical Parameters Measurement Technology Committee The main drafting units. China Institute of Metrology Beijing Institute of Metrology detection Guangdong Provincial Institute of Metrology Shanghai Measurement and Testing Technology Research Institute Zhibo the Beijing Science and Technology Co., Ltd. Participated in the drafting unit. China Testing Technology Research Institute Hilti (China) Co., Ltd. This specification by the responsible National Engineering Geometrical Parameters Technical Commission explained The main drafters of this specification. Zhang Heng (China Institute of Metrology) Wu Xun (Beijing Institute of Metrology detection) Zhang Yong (Guangdong Institute of Metrology) Liu Yin (Shanghai Institute of Measurement and Testing) Pipe Jun (Beijing Zhibo Technology Co., Ltd.) Drafters participate. Ran Qing (China Testing Technology Research Institute) Wang Conghui (Hilti (China) Co., Ltd.)

1 Scope (1) 2. Referenced Documents (1) 3 Terms (1) 4 Overview (1) 5 Metrological characteristics (1) 5.1 measurement repeatability (1) 5.2 indication error (1) 6 calibration conditions (3) Environmental conditions 6.1 (3) 6.2 Calibration with a standard block (3) 7 calibration items and calibration methods (3) 7.1 Measurement repeatability (3) 7.2 Indication Error (4) 8 calibration results expression (4) 8.1 calibration certificate (4) 8.2 calibration measurement uncertainty (4) 9 Recalibration interval (4) Appendix A reinforced protective layer thickness measuring instrument error of measurement results are shown Uncertainty Evaluation (5) Appendix B Technical requirements standard blocks (7) Appendix C calibration certificate contents (8) Reinforced protective layer, floor thickness gauge calibration specification

1 Scope

This standard applies to the thickness of the slab thickness gauges and gauge calibration reinforced protective layer.

2 Citations

This specification references the following documents. JJF 1001-1998 common measurement terms and definitions JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement JJF 1094-2002 measuring instrument characteristics evaluation Construction quality concrete structures GB 50204-2002 acceptance When using this specification it should be noted that using the currently valid version of the documents cited.

3 Terms

Reinforced protective layer thickness (thicknessoftheconcreteprotectivecoating). refers to the outer edge of the steel surface To its distance from the surface of the protective layer.

4 Overview

Reinforced protective layer, floor thickness gauge refers reinforced protective layer thickness measuring instrument and slab thickness gauge. they It is the principle of electromagnetic nondestructive testing instrument for building structures and physical protection layer thickness slab thickness measuring. Reinforced protective layer thickness gauge probes (having a transmitter and receiver functions) transmits electromagnetic signals, the protection layer steel Tendons secondary induced magnetic field, the probe is received by the instrument to give reinforced protective layer thickness or bar diameter Measurements. Instrument can also be used to measure the distribution of steel. Slab thickness gauge transmitter and receiver probes were placed on the surface and the bottom surface of the floor test, launch probe launch Electromagnetic signals received by the receiving probe magnetic field attenuated signal, after processing equipment to obtain thickness measurements of the floor. Schematic diagram of the instrument shown in Figure 1, respectively, as shown in Figure 2.

5 Metrological characteristics

5.1 Measurement repeatability Reinforced protective layer thickness measuring instrument measurement repeatability requirements of Table 1, the slab thickness gauge measurement repeatability asked to see Table 2. 5.2 Indication error 5.2.1 reinforced protective layer thickness measuring instrument Reinforced protective layer thickness measuring instrument shows the measured value of the maximum permissible error according to the thickness of the protective layer of reinforced division, asked to see Table 1.

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1224-2009_English be delivered?

Answer: Upon your order, we will start to translate JJF 1224-2009_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1224-2009_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1224-2009_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version JJF 1224-2009?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJF 1224-2009 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.