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JJF 1721-2018 English PDF

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US$419.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1721-2018: Calibration Specification for Carbonization Depth Measuring Instruments and Calipers
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1721-2018	419	Add to Cart	4 days	Calibration Specification for Carbonization Depth Measuring Instruments and Calipers	Valid

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Basic data

Standard ID: JJF 1721-2018 (JJF1721-2018)
Description (Translated English): Calibration Specification for Carbonization Depth Measuring Instruments and Calipers
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A52
Word Count Estimation: 18,191
Date of Issue: 2018-12-25
Date of Implementation: 2019-03-25
Regulation (derived from): State Administration of Markets, Announcement No. 34 of 2018
Issuing agency(ies): State Administration for Market Regulation

JJF 1721-2018: Calibration Specification for Carbonization Depth Measuring Instruments and Calipers

---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.
(Carbonization depth gauge and gauge calibration specifications) National Metrology Technical Specification Carbonization depth gauge and gauge calibration specifications Published on.2018-12-25 2019-03-25 implementation State Market Supervisory Administration released Carbonization depth gauge and Measuring rule calibration specification Focal Point. National Geometric Quantity Engineering Measurement Technology Committee Main drafting unit. Guangxi Zhuang Autonomous Region Metrology and Inspection Institute Henan Institute of Metrology Participated in drafting unit. Xiamen Saibao Industrial Technology Research Institute Co., Ltd. Anhui Institute of Metrology This specification entrusts the National Geometric Quantity Engineering Parameter Measurement Technical Committee to explain The main drafters of this specification. Yang Mingzhu (Guangxi Zhuang Autonomous Region Metrology and Testing Institute) Huang Yuzhu (Henan Institute of Metrology) Jia Xiaojie (Henan Institute of Metrology) Participate in the drafters. Chang Hao (Xiamen Saibao Industrial Technology Research Institute Co., Ltd.) Ma Lin (Anhui Institute of Metrology) Li Shuangding (Guangxi Zhuang Autonomous Region Metrology and Testing Institute) Su Yixiong (Guangxi Zhuang Autonomous Region Metrology and Testing Institute)

Introduction (III) 1 Scope (1) 2 References (1) 3 terms (1) 4 Overview (1) 5 Measurement characteristics (3) 5.1 zero error (3) 5.2 Indication variability (3) 5.3 indication error (3) 5.4 proofreading block height (4) 6 Calibration conditions (4) 6.1 Environmental conditions (4) 6.2 Measurement standards and other equipment (4) 7 Calibration items and calibration methods (4) 7.1 Calibration Project (4) 7.2 Calibration method (4) 8 calibration result expression (5) 9 re-study interval (5) Appendix A Example of Calibration Uncertainty Evaluation of Indicator Error of Pointed Carbonation Depth Gauge (6) Appendix B Example of Calibration Uncertainty Evaluation for Numerical Display Carbonization Depth Gauge Indication Error (8) Appendix C Calibration Certificate Contents and Inner Page Format (10)

Introduction

This specification is based on JJF 1071-2010 "Rules for the preparation of national metrological calibration specifications", JJF 1001-2011 Measurement Terms and Definitions, JJF 1094-2002 "Measuring Instrument Characteristics" and JJF 1059.1-2012 Volume Uncertainty Assessment and Representation is based on and based on the basis. This specification is the first release. Carbonization depth gauge and gauge calibration specifications

1 Scope

This specification applies to the measurement of the depth of carbonization with a graduation value/resolution of 0.25 mm and an upper limit of the measurement range up to 8 mm. Instrument, and the degree of resolution/resolution is 0.01mm, 0.02mm, the measurement range is up to 70mm carbonization depth measurement Calibration of the ruler. Other types of carbonization depth gauges and gauges are also available for reference.

2 reference files

This specification refers to the following documents. JJG30 universal caliper JGJ/T 23 Rebound method for testing concrete compressive strength For dated references, only dated versions apply to this specification; undated quotations The latest version (including all amendments) applies to this specification.

3 terms

3.1 Carbonization depth carbonizationdepth The vertical distance between the carbonized and uncarbonized interface of the concrete to the concrete surface. 3.2 Rebound method Using a spring-driven weight hammer, the concrete surface is struck by the impact rod (the force-transmitting rod), and the weight is detected to be rebounded. The distance returned, with the rebound value (ratio of the bounce distance to the initial length of the spring) as an indicator related to the intensity, A method of determining the strength of concrete.

4 Overview

The carbonization depth measuring instrument and measuring ruler are used to measure the surface carbonization layer of the measured surface when the concrete strength is measured by the rebound method. Dedicated equipment for depth. It is widely used for the measurement of the depth of carbonized layers on concrete and other building materials. How it is read Divided into pointer, cursor and digital. Its outline structure is shown in Figure 1, Figure 2, Figure 3, and Figure 4. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1721-2018_English be delivered?

Answer: Upon your order, we will start to translate JJF 1721-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1721-2018_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1721-2018_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 Sales@ChineseStandard.net. 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.