HOME Cart(9) Quotation About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

JJF 1709-2018 English PDF

US$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1709-2018: Calibration Specification for Standard Glass Floats
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1709-2018	English	279	Add to Cart	3 days [Need to translate]	Calibration Specification for Standard Glass Floats	Valid	JJF 1709-2018

PDF similar to JJF 1709-2018

Standard similar to JJF 1709-2018

JJF 1943 GB/T 36126 GB/T 1885 JJF 1212 JJF 1070 JJF 1708

Basic data

Standard ID	JJF 1709-2018 (JJF1709-2018)
Description (Translated English)	Calibration Specification for Standard Glass Floats
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A53
Word Count Estimation	12,150
Date of Issue	2018-06-25
Date of Implementation	2018-09-25
Regulation (derived from)	State Administration of Markets, Announcement No. 13 of 2018
Issuing agency(ies)	State Administration for Market Regulation

JJF 1709-2018: Calibration Specification for Standard Glass Floats

---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 Standard Glass Floats National Metrology Technical Specification of the People's Republic Standard Glass Float Calibration Specification Published on.2018-06-25 2018-09-25 implementation State Administration of Markets issued Standard Glass Float Calibration Specification Focal Point. National Quality Density Measurement Technical Committee Main drafting unit. China Institute of Metrology Guangdong Institute of Metrology Participated in the drafting unit. Xinjiang Uygur Autonomous Region Metrology and Testing Institute Jiangsu Institute of Metrology This Code entrusts the National Quality Density Measurement Technical Committee to explain The main drafters of this specification. Xu Changhong (China Institute of Metrology) Yang Jinyong (Guangdong Institute of Metrology) Participate in the drafters. Xu Qiusha (Xinjiang Uygur Autonomous Region Metrology and Testing Institute) Zhou Xu (Jiangsu Institute of Metrology) Li Zhanhong (China Institute of Metrology)

Introduction (II) 1 Scope (1) 2 References (1) 3 terms and units of measurement (1) 3.1 Terminology (1) 3.2 Unit of measurement (1) 4 Overview (1) 5 Measurement characteristics (2) 5.1 Appearance (2) 5.2 Standard temperature (2) 5.3 Density value (2) 6 Calibration conditions (2) 6.1 Environmental conditions (2) 6.2 Standard and other equipment (2) 7 Calibration items and calibration methods (2) 7.1 Calibration Project (2) 7.2 Visual inspection (2) 7.3 Calibration method (2) 7.4 Data Processing (3) 8 Expression of calibration results (3) 9 re-study interval (3) Appendix A Example of Standard Glass Float Calibration Uncertainty Evaluation (4) Appendix B Standard Glass Float Calibration Record Reference Format (6) Appendix C Standard Glass Float Calibration Certificate Inner Page Reference Format (7)

Introduction

JJF 1071-2010 "Rules for the Preparation of National Metrology Calibration Specifications", JJF 1001-2011 "General Terms of Measurement and Definition", JJF 1059.1-2012 "Measurement Uncertainty Evaluation and Representation" together constitutes support for the development of this specification The basic series of specifications. The main technical contents of this calibration specification are as follows. --- Calibration method, comprehensive reference to the experimental methods in ISO and ASTM, combined with the actual measurement experiments, Set specific calibration parameters. For example, the standard temperature is 23 ° C, the waiting time is 15 min, and the like. --- The choice of density measurement method, combined with the application status of China, the liquid density measurement uses the glass float method. In the ISO and ASTM standards, the density bottle method is mainly mentioned, and it is also mentioned that other criteria can be used. Density measurement method required for accuracy. --- Analysis of the influence components of the glass float during the calibration process, and gives the calibration uncertainty Analysis of the example. This specification is the first release. Standard Glass Float Calibration Specification

1 Scope

This specification applies to the calibration of standard glass floats.

2 reference files

This specification refers to the following documents. JJG86-2011 standard glass float meter JJF 1229-2009 Terms and definitions of mass density measurement Plastics -- Determination of density of non-foam plastics -- Part 1 . Dipping method, liquid Relative density bottle method and titration method (Plastics-Methodsfordeterminingthedensityofnon-celular plastics-Part 1. Immersionmethod, liquidpyknometermethodandtitrationmethod) Plastics -- Determination of density of non-foam plastics - Part 2 (Plastics-Methodsfordeterminingthedensityofnon-celularplastics-Part 2.Density Gradientcolumnmethod ASTMD1505-10 Test Method for Density of Plastics by Density Gradient Method (StandardTestMethod forDensityofPlasticsbytheDensity-GradientTechnique) For dated references, only dated versions apply to this specification; undated quotations The latest version (including all amendments) applies to this specification.

3 terms and units of measure

3.1 Terminology 3.1.1 standard glass float standardglassfloats Used in density gradient tubes to calibrate special glass beads of liquid density in the tube. 3.1.2 density gradient tube densitygradienttube It is an instrument that performs density measurement based on changes in liquid density gradient. Forming a liquid column in a density gradient tube, liquid The density of the liquid in the column is continuously changed from top to bottom, and the density of the liquid in the tube is calibrated with a float. 3.2 Unit of measurement The density unit is kg/m3 or g/cm3.

4 Overview

Density gradient tube method is widely used in density measurement in petrochemical and pharmaceutical industries. Its measurement principle is that it will be two a liquid mixture of one or more different densities, forming a liquid column in the density gradient tube, the density of the liquid column being in accordance with the height position Set linear changes. The standard glass float (hereinafter referred to as the float) and the sample to be tested are suspended in the density gradient tube degree. The density value of the liquid column in the density gradient tube is calibrated by the density value known from the float, thereby completing the Measure the density of the sample.

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1709-2018_English be delivered?

Answer: Upon your order, we will start to translate JJF 1709-2018_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 1709-2018_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1709-2018_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 [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.