JJG 395-2016 English PDF

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JJG 395-2016: Carbon-sulfur Analyzers
Status: Valid

JJG 395: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 395-2016	329	Add to Cart	3 days	Carbon-sulfur Analyzers	Valid
JJG 395-1997	439	Add to Cart	3 days	Verification regulation for carbon-sulfur analyzer	Obsolete

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Basic data

Standard ID: JJG 395-2016 (JJG395-2016)
Description (Translated English): Carbon-sulfur Analyzers
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A61
Word Count Estimation: 14,130
Date of Issue: 2016-11-25
Date of Implementation: 2017-05-25
Older Standard (superseded by this standard): JJG 395-1997
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 395-2016: Carbon-sulfur Analyzers

---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.
Carbon-sulfur Analyzers National Metrological Verification Regulation of the People's Republic of China Fixed carbon deposition sulfur analyzer 2016-11-25 release 2017-05-25 implementation State Administration of Quality Supervision, Inspection and Quarantine issued Test procedure for determination of carbon fixation sulfur analyzer Analy zers Replacing JJG 395-1997 Responsible unit. National Environmental Chemical Metrology Technical Committee The main drafting unit. Shanghai Institute of Metrology and Testing Technology Participated in the drafting unit. Jiangsu Province Institute of Metrology This procedure entrusts the National Environmental Chemistry Metrology Technical Committee to explain The main drafters of this procedure. Huang Wei (Shanghai Institute of Metrology and Testing Technology) Ren Shuzhen (Shanghai Institute of Metrology and Testing Technology) Ding Min (Shanghai Institute of Metrology and Testing Technology) Participate in the drafters. Cai Yeqiang (Jiangsu Institute of Metrology)

table of Contents

Introduction (II) 1 Scope (1) 2 Overview (1) 3 Measurement performance requirements (1) 4 General technical requirements (2) 4.1 appearance and functional inspection (2) 4.2 Insulation resistance (2) 4.3 Insulation strength (2) 5 Measuring instruments (2) 5.1 Test conditions (2) 5.2 Verification Project (3) 5.3 Verification method (3) 5.4 Test result processing and verification cycle (4) Appendix A Carbon sequestration sulfur analyzer Verification of the original record (5) Appendix B Verification Certificate/Verification Result Notice Page Format (7)

Introduction

This procedure is based on JJF1002 "National Metrological Verification Rules", JJF1001 "General measurement terms and Definition "to write. Compared with JJG 395-1997 "carbon fixation sulfur analyzer", in addition to editorial changes, the main technical changes As follows. --- increase the automatic high-speed carbon and sulfur analyzer; Adjust the measurement range and maximum allowable error of the infrared carbon and sulfur analyzer. JJG 395-1997, carbon Measuring range of 0.0010% ~ 3.00%, sulfur measurement range of 0.0010% to 0.300%, ultra-low carbon and low sulfur The maximum allowable error is ± 0.0005%. In this procedure, the measurement range of carbon is 0.005% ~ 4.00% The range of 0.003% ~ 0.200%, ultra-low carbon and low sulfur maximum allowable error of ± 0.002% and ± 0.001%; --- Adjust the repeatability of the infrared carbon and sulfur analyzer. In JJG 395-1997, the repeatability of carbon and sulfur means Standard were 1.0% and 4.0%, the rules, the indicators were 0.8% and 3.0%; --- to cancel the weighing stability requirements; --- increase the insulation resistance and dielectric strength of the two conventional safety performance indicators. The previous release of this procedure. --- JJG 395-1997. Test procedure for determination of carbon fixation sulfur analyzer

1 Scope

This procedure applies to the infrared carbon and sulfur analyzer and automatic high-speed carbon and sulfur analyzer for the first time, the subsequent verification and Check in.

2 Overview

Carbon stabilized sulfur analyzer (hereinafter referred to as instrument) is mainly used for steel, metallurgy, machinery manufacturing processing, casting colored Quantitative Analysis of Carbon and Sulfur in Steel, Iron and Other Materials in Metals and Other Industries. Determination of metal, ore, ceramics and other objects The content of carbon and sulfur contained in the quality, mainly infrared carbon and sulfur analyzer and automatic high-speed carbon and sulfur analyzer two categories instrument. Infrared carbon and sulfur analyzer is the principle of a certain quality of the sample after flux in the high-frequency furnace in the high-temperature heating combustion, So that the sample of carbon, sulfur and oxygen reaction to produce carbon dioxide and sulfur dioxide gas, driven by the carrier gas through the gas The treatment system enters the detection chamber of carbon dioxide and sulfur dioxide, using carbon dioxide and sulfur dioxide at 4260 nm And 7400nm, with a strong characteristic absorption of this feature, by measuring the gas absorption of light intensity analysis of carbon dioxide And sulfur dioxide content, resulting in the sample carbon and sulfur content of the percentage. Automatic high-speed carbon and sulfur analyzer, including gas capacity of carbon and sulfur analyzer and conductivity of carbon and sulfur analyzer. Gas volume method Carbon and sulfur analyzer (volumetric method) is the principle of carbon measurement for the gas volume method, the sample in the high temperature furnace into the oxygen combustion, carbon Is oxidized to carbon dioxide, absorbed with potassium hydroxide to absorb the difference between before and after the volume, calculated by determining the carbon content; Sulfur for the iodine method, sulfur generated by combustion of sulfur dioxide, starch absorption to produce sulfurous acid, and then iodine (or iodic acid Potassium) solution titrated to light blue for the end, from the consumption of iodine volume obtained sulfur content. Conductivity method Carbon and sulfur analyzer (Conductivity Method) is the principle of the sample after the high temperature combustion generated by the mixed gas, after the absorption of the conductivity cell, the solution conductivity Rate changes, so as to determine the carbon and sulfur content.

3 Measurement performance requirements

Infrared carbon and sulfur analyzer and automatic high-speed carbon and sulfur analyzer metering performance requirements are shown in Table 1 and Table 2, respectively. Table 1 Infrared carbon and sulfur analyzer metering performance requirements Item Name Carbon content Maximum allowable error Maximum permissible error of sulfur content Indication error % (Mass fraction) 0.005 to 0.010 ± 0.002 0.003 to 0.010 ± 0.001 0.010 to 0.100 ± 0.005 > 0.010 to 0.100 ± 0.005 > 0.100 to 1.000 ± 0.010 > 0.100 to 0.200 ± 0.010 > 1.00 ~ 4.00 ± 0.030 Repeatability /% carbon. ≤ 0.8, sulfur. ≤ 3.0 Analysis time < 1min ......

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