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

JJF 2029-2023 English PDF

US$659.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 2029-2023: Calibration Specification for Differential Pressure Liquid Density Meters
Status: Valid
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJF 2029-2023English659 Add to Cart 5 days [Need to translate] Calibration Specification for Differential Pressure Liquid Density Meters Valid JJF 2029-2023

Standard similar to JJF 2029-2023

JJF 1033   JJF 1050   JJF 1030   

Basic data

Standard ID JJF 2029-2023 (JJF2029-2023)
Description (Translated English) Calibration Specification for Differential Pressure Liquid Density Meters
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 30,324
Date of Issue 2023-03-15
Date of Implementation 2023-09-15
Issuing agency(ies) State Administration for Market Regulation

JJF 2029-2023: Calibration Specification for Differential Pressure Liquid Density Meters

---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.
National Metrology Technical Specifications of the People's Republic of China JJF 2029-2023 Specification for Calibration of Differential Pressure Liquid Density Meter Released on 2023-03-15 2023-09-15 Implementation Released by the State Administration for Market Regulation Differential pressure liquid density meter Calibration specification Responsible unit: National Mass Density Measurement Technical Committee Main drafting unit: Guangdong Institute of Metrology China Institute of Metrology South China National Metrology and Testing Center Participating in the drafting unit: Shandong Metrology and Testing Center Shanghai Institute of Metrology and Testing Technology This specification entrusts the National Mass Density Measurement Technical Committee to be responsible for interpretation The main drafters of this specification: Shen Youdi (Guangdong Institute of Metrology) Xu Changhong (National Institute of Metrology) Yang Jinyong (South China National Metrology and Testing Center) Participating drafters: Chen Yueting (Shandong Metrology and Testing Center) Chen Chaoyun (Shanghai Institute of Metrology and Testing Technology)

Table of contents

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 Terms and units of measurement(1) 4 Overview(1) 5 Metrological characteristics(2) 6 Calibration conditions(2) 6:1 Environmental conditions (2) 6:2 Measuring standards and other equipment (2) 7 Calibration Items and Calibration Methods(3) 7:1 Preparations before calibration (3) 7:2 Indication error(4) 7:3 Repeatability(6) 7:4 Data processing (6) 8 Calibration Results(7) 9 Recalibration interval(8) Appendix A (0~40)℃ pure water density table (excluding air) (9) Appendix B Capillary constant α of liquids with density less than that of water (11) Appendix C Capillary constant α of several other liquids (20°C) (13) Appendix D Liquid Density Meter Calibration Record Format (14) Appendix E Calibration Certificate Inner Page Format (17) Appendix F Example of Calibration Uncertainty Evaluation of Indication Error of Liquid Density Meter (18)

Introduction

JJF 1071 "Rules for Compilation of National Metrology and Calibration Standards", JJF 1001 "General Metrology Terms and Definitions", JJF 1059:1 "Evaluation and Expression of Measurement Uncertainty" together constitute the basic system supporting the formulation of this calibration specification: column specification: The measurement characteristics, calibration items and calibration methods of this specification mainly refer to JJG42 "Working Glass Buoyometer", JJG86 "Standard Glass Float Meter", JJG1058 "Laboratory Vibration Liquid Density Meter", JJG370 "On-line Vibration Tube Liquid Density Meter", JJG999 "Weighing Digital Display Liquid Density Meter", JJF 1866 "Immersion Vibration Electronic Liquid Density Meter" Specifications for Calibration of Meters and GB/T 6682 "Specifications and Test Methods for Water in Analytical Laboratories": This specification is published for the first time: Specification for Calibration of Differential Pressure Liquid Density Meter

1 Scope

This specification applies to the calibration of differential pressure liquid density meters with a measurement range of (650~2000) kg/m3 under static conditions:

2 References

This specification references the following documents: JJG42 working glass float gauge JJG86 standard glass float gauge JJG370 Online Vibrating Tube Liquid Density Meter JJG999 Weighing digital display liquid density meter JJG1058 Laboratory Vibration Liquid Density Meter JJF 1866 Calibration specification for immersion vibration electronic liquid density meter GB/T 6682 Analytical laboratory water specifications and test methods For dated references, only the dated version applies to this specification; for undated references document, its latest version (including all amendments) applies to this specification:

3 Terminology and units of measurement

3:1 Terminology 3:1:1 differential pressure The pressure difference between the upper and lower pressure sensors of the instrument is usually expressed by Δp: 3:2 Units of measurement The unit of density is kg/m3 or g/cm3:

4 Overview

Differential pressure liquid density meter (hereinafter referred to as liquid density meter) is mainly composed of upper and lower pressure sensors, temperature sensors, It is composed of data processing unit and display unit: Its functional relationship can be simply described as formula (1): ρ= Δp g·h (1) In the formula: ρ---liquid density, kg/m3; Δp---differential pressure, Pa; g---Gravity acceleration, m/s2; h---the distance between the pressure sensors, m:

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 2029-2023_English be delivered?

Answer: Upon your order, we will start to translate JJF 2029-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 2029-2023_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 2029-2023_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.