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JJG 171-2016: Ralative Density Balance for Liquid
Status: Valid JJG 171: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 171-2016 | English | 369 |
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Ralative Density Balance for Liquid
| Valid |
JJG 171-2016
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| JJG 171-2004 | English | 639 |
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Verification Regulation of Ralative Density Balance for Liquid
| Obsolete |
JJG 171-2004
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| JJG 171-2001 | English | RFQ |
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Railway locomotive wheel Checker VRof
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JJG 171-2001
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| JJG 171-1985 | English | 479 |
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Verification Regulation of Liquid Specific Gravity Balance
| Obsolete |
JJG 171-1985
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| JJG 171-1976 | English | RFQ |
ASK
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(Chinese Industry Standard)
| Obsolete |
JJG 171-1976
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PDF similar to JJG 171-2016
Basic data | Standard ID | JJG 171-2016 (JJG171-2016) | | Description (Translated English) | Ralative Density Balance for Liquid | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A53 | | Word Count Estimation | 16,144 | | Date of Issue | 2016-11-25 | | Date of Implementation | 2017-05-25 | | Older Standard (superseded by this standard) | JJG 171-2004 | | Regulation (derived from) | State Administration of Quality Supervision, Inspection and Quarantine Notice No.116 of 2016 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine | 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).
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