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JJG 171-2016: Ralative Density Balance for Liquid
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
JJG 171-2016	English	369	Add to Cart	3 days [Need to translate]	Ralative Density Balance for Liquid
JJG 171-2004	English	639	Add to Cart	3 days [Need to translate]	Verification Regulation of Ralative Density Balance for Liquid
JJG 171-2001	English	RFQ	ASK	3 days [Need to translate]	Railway locomotive wheel Checker VRof
JJG 171-1985	English	479	Add to Cart	4 days [Need to translate]	Verification Regulation of Liquid Specific Gravity Balance
JJG 171-1976	English	RFQ	ASK	3 days [Need to translate]	(Chinese Industry Standard)

JJG 171-2016: Ralative Density Balance for Liquid

---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.
Ralative Density Balance for Liquid National Metrological Verification Regulation of the People's Republic of China Liquid relative density balance 2016-11-25 release 2017-05-25 implementation State Administration of Quality Supervision, Inspection and Quarantine issued Liquid relative density balance test procedure uid Replacing JJG 171-2004 Focal unit. National Quality and Density Metrology Technical Committee Drafting unit. Shanghai Institute of Metrology and Testing Technology Shandong Institute of Metrology This procedure entrusts the National Quality Density Metrology Technical Committee to explain The main drafters of this procedure. Qu Chaoqing (Shanghai Institute of Metrology and Testing Technology) Shi Li (Shandong Institute of Metrology) Participate in the drafters. Wang Jian (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) 3.1 Terms (1) 3.2 Units of measurement (2) 4 Overview (2) 4.1 Principles (2) 4.2 Use (2) 4.3 Structure (2) 5 Measurement performance requirements (2) 5.1 Maximum allowable error (2) 5.2 Sensitivity (3) 5.3 Division value (3) 6 General technical requirements (3) 6.1 Appearance and logo (3) 6.2 hammer quality (4) 6.3 Supporting equipment requirements (4) 7 Metering device control (4) 7.1 Test conditions (4) 7.2 Verification Items and Verification Methods (5) 8 Verification and processing of test results (7) 8.1 Processing of test results (7) 8.2 Verification cycle (7) Appendix A (0 ~ 40.5) ℃ relative density of distilled water temperature (8) Appendix B Liquid Relative Density Balance Verification Record Form (9) Appendix C Liquid Relative Density Balance Verification Certificate Page Format (10) Appendix D Liquid Relative Density Balance Test Results Page Format (11)

Introduction

JJF1002 "National Metrological Verification Rules", JJF1001 "General Metrology Terms and Definitions" and JJF1229 "Terminology and definition of quality density metrology nouns" together constitute the basic system to support the revision of this procedure specification. The revision of this procedure is mainly based on years of practical application, the JJG 171-2004 part of the description of the repair change. Compared with JJG 171-2004, in addition to editorial changes, the main technical changes are as follows. --- added part of the reference file; --- cancel the special weight and other terms; --- increase the hammer, riding code and other related terms; --- modify the relative density value correction value formula. The previous version of this procedure is released as follows. Liquid relative density balance; JJG 171-2004; --- JJG 171-1985 liquid specific gravity balance. Liquid relative density balance test procedure

1 Scope

This procedure applies to the relative density of liquid relative density of not more than 2.0000 mechanical liquid balance (hereinafter referred to as Balance) of the first test, follow-up test and use of the inspection.

2 reference file

JJG 99-2006 weight Terminology and definitions of quality density metrology nouns JJF1229-2009 OIMLR76-1..2006 (E) Non-automaticweighinginstruments For dated references, only the dated edition applies to this rule; references that are not dated , The latest version (including all amendments) applies to this procedure.

3 terms and units of measurement

3.1 terminology 3.1.1 hammer system weighing system By a relatively fixed volume and quality of the hammer, double hook code and hanging wire composed of the system. 3.1.2 hammer plumb By a relatively fixed volume and mass of glass rods. At 20 ° C, the hammer volume is 5 cm3. 3.1.3 riding rider Place and move the special weight on the beam slot. 3.1.4 hook code hookedweight The top with a hook of 15g weight. 3.1.5 beam slot channelbeam Evenly distributed on the balance beam 10 V-shaped groove, specifically placed a variety of riding code. 3.1.6 Spacing of beams by beam spaceofbeamgraduation The center distance of two adjacent notches. 3.1.7 relative density ralativedensity Refers to the ratio of the material density ρ1 to the reference substance density ρ2 under the specified conditions, that is, d = ρ1 ρ2 , For the amount of dimensionless. The "relative density" in this procedure refers to the ratio of the liquid density ρ at the temperature t to the distilled water at a temperature of 20 ° C, i.e. dt20, whose expression is dt20 = ρ ρ water 3.1.6 Density scale value scaleinterval The relative density difference between any adjacent two slots of the balance. The balance of this rule is equal to one 0.0001 (relative density value). ...