JJF 1866-2020 English PDF

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JJF 1866-2020: Calibration Specification for Immersion Oscillation-type Electronic Liquid Density Meters
Status: Valid

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JJF 1866-2020	599	Add to Cart	5 days	Calibration Specification for Immersion Oscillation-type Electronic Liquid Density Meters	Valid

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Basic data

Standard ID: JJF 1866-2020 (JJF1866-2020)
Description (Translated English): Calibration Specification for Immersion Oscillation-type Electronic Liquid Density Meters
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A53
Word Count Estimation: 26,218
Date of Issue: 2020-09-11
Date of Implementation: 2021-03-11
Regulation (derived from): Announcement No. 40 (2020) of the State Administration for Market Regulation
Issuing agency(ies): State Administration for Market Regulation

JJF 1866-2020: Calibration Specification for Immersion Oscillation-type Electronic 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.
Calibration Specification for Immersion Oscillation-type Electronic Liquid Density Meters National Metrology Technical Specifications of the People's Republic of China Calibration specification for immersed vibration electronic liquid densitometer 2020-09-11 released 2021-03-11 implementation Issued by the State Administration for Market Regulation Immersion vibrating e-liquid Density meter calibration specification Focal point. National Technical Committee of Quality Density Measurement Main drafting unit. Shandong Institute of Metrology China Institute of Metrology Heilongjiang Institute of Metrology Participated in the drafting. Shandong Metrology and Testing Center Guangdong Institute of Metrology Qingdao Aobang Measuring Instruments Co., Ltd. This specification entrusts the National Quality Density Measurement Technical Committee to be responsible for the interpretation The main drafters of this specification. Li Wansheng (Shandong Institute of Metrology) Shi Wencai (China Institute of Metrology) Xu Xiuhua (Heilongjiang Institute of Metrology) Participating drafters. Chen Yueting (Shandong Metrology and Testing Center) Shen Youdi (Guangdong Institute of Metrology) Zhao Yucheng (Shandong Institute of Metrology) Chen Hui (Qingdao Aobang Measuring Instruments Co., Ltd.)

table of Contents

Introduction (Ⅱ) 1 scope (1) 2 Reference documents (1) 3 Terms and measurement units (1) 3.1 Term (1) 3.2 Unit of measurement(1) 4 Overview (1) 5 Measurement characteristics (2) 6 Calibration conditions (2) 6.1 Environmental conditions (2) 6.2 Measurement standards and other equipment (2) 7 Calibration items and calibration methods (3) 7.1 Preparation before calibration (3) 7.2 Indication error and repeatability (4) 8 Calibration results (8) 9 Recalibration interval (8) Appendix A (0~40)℃ pure water density table (excluding air) (9) Appendix B The capillary constant α of liquids with a density less than the density of water (11) Appendix C Capillary Constant α of Several Other Liquids (13) Appendix D Density Standard Liquid Calibration Method Density Meter Calibration Original Record (14) Appendix E Density standard liquid and bench-top vibrating tube densitometer calibration method Density meter calibration original record (15) Appendix F First-class standard density meter calibration method densitometer calibration original record (16) Appendix G Calibration Certificate Inner Page Format (17) Appendix H Evaluation of Uncertainty in Calibration of Indication Error of Submerged Vibratory Electronic Liquid Densitometer (19)

Introduction

JJF 1071 "Rules for the Compilation of National Metrology and Calibration Specifications", JJF 1001 "General Metrology Terms and Definitions", JJF 1059.1 "Evaluation and Expression of Measurement Uncertainty" together constitutes 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 Float Gauge", JJG86 "Standard Glass Float Meter", JJG1058 "Laboratory Vibrating Liquid Density Meter", GB/T 6682 "Analytical Practice Laboratory Water Specifications and Test Methods" and ISO 15212-1 "Vibration Density Meter Part 1.Laboratory Instruments" (Oscilation-typedensitymeters-Part 1.Laboratoryinstruments) related content. This specification is released for the first time. Calibration specification for immersed vibration electronic liquid densitometer

1 Scope

This specification applies to submerged vibrating e-liquid with a measuring range of (650~2000)kg/m3 under static pressure Calibration of densitometer and micro-vibration cylinder electronic liquid densitometer.

2 Reference documents

This specification refers to the following documents. JJG42 working glass float gauge JJG86 standard glass float gauge JJG1058 laboratory vibrating liquid density meter GB/T 6682 Analytical laboratory water specifications and test methods ISO 15212-1 Vibration-type Density Meter Part 1.Laboratory Instruments (Oscilation-typedensity meters-Part 1.Laboratoryinstruments) For dated reference documents, only the dated version applies to this specification; for undated references The latest version (including all amendments) is applicable to this specification.

3 Terms and units of measurement

3.1 Term 3.1.1 Immersion oscilation-type electronic liquid density meter densitymeter The measuring sensor is completely immersed in the liquid, according to the resonance frequency of the vibration sensor and the temperature measured by the temperature sensor. An instrument for calculating the density of a liquid. 3.2 Unit of measurement The unit of density is kg/m3 or g/cm3.

4 overview

The immersion vibration type electronic liquid density meter (hereinafter referred to as the density meter) is mainly composed of vibration sensors, temperature sensors, Data processing unit and display unit. The liquid density ρ in the vibration sensor has a corresponding function to its vibration period Number relationship. The functional relationship between the two can be simply described as formula (1). ρ=ƒ(k,T,t) (1) Where. k---Density meter coefficient; T---vibration period; t---Liquid temperature. ......

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