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JJG 1135-2017 English PDF

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JJG 1135-2017: Thermogravimetric Analyzers
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Basic data

Standard ID JJG 1135-2017 (JJG1135-2017)
Description (Translated English) Thermogravimetric Analyzers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A54
Classification of International Standard 17.200
Word Count Estimation 17,123
Date of Issue 2017-02-28
Date of Implementation 2017-05-28
Regulation (derived from) General Administration of Quality Supervision, Inspection and Quarantine No. 23 of 2017
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to the initial verification of thermogravimetric analyzer, follow-up inspection and inspection in use.

JJG 1135-2017: Thermogravimetric 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.
Thermogravimetric Analyzers National Metrological Verification Regulation of the People's Republic of China Thermogravimetric analyzer 2017-02-28 released 2017-05-28 Implementation State Administration of Quality Supervision, Inspection and Quarantine issued Verification of thermogravimetric analyzer Coordinate Unit. National New Materials and Nanometer Metrology Technical Committee The main drafting unit. China Institute of Metrology Participated in the drafting unit. PerkinElmer Enterprise Management (Shanghai) Co., Ltd This procedure entrusts the National New Materials and Nanometer Metrology Technical Committee to explain The main drafters of this procedure. Wang Haifeng (China Institute of Metrology) Li Jia (China Institute of Metrology) Participate in the drafters. Huarui [PerkinElmer Enterprise Management (Shanghai) Co., Ltd.]

table of Contents

Introduction (II) 1 Scope (1) 2 terms and definitions (1) 3 Overview (1) 4 Measurement performance requirements (1) 5 General technical requirements (2) 5.1 appearance (2) 5.2 Functions (2) 6 Metering device control (2) 6.1 Test conditions (2) 6.2 Test items and verification methods (3) 6.3 Test cycle (6) APPENDIX A STANDARD SUBSTANCES, SAMPLE QUALITY AND TEMPERATURE RISING PROCEDURES (REFERENCE) (7) Appendix B Thermogravimetric Verification Test Original Recording Format (8) Appendix C Certificate of Verification and Verification Results Page Format (10)

Introduction

JJF1002 "National Metrological Verification Rules", JJF1001 "General Metrology Terms and Definitions" and JJF1059.1 "Measurement Uncertainty Assessment and Representation" together constitute the basic series that supports the development of this procedure specification. This procedure refers to the JJG 936-2012 "differential scanning calorimeter", GB/T 27762-2011 "thermogravimetric analysis Test Method for Calibration of Instrumental Quality Indication "and ASTME1582-2014" Calibration Method for Temperature of Thermogravimetric Analyzers " (StandardPracticeforCalibrationofTemperatureScaleforThermogravimetry) file Terms and definitions related to thermogravimetric analyzers, technical requirements and test methods. This order is the first release. Verification of thermogravimetric analyzer

1 Scope

This procedure applies to the initial verification of the thermogravimetric analyzer, subsequent verification and inspection in use.

2 terms and definitions

Curry point Curietemperature When the ferromagnetic material is heated to a certain temperature, the ferromagnetism changes to paramagnetism, which is called the Curie point or the home In the temperature.

3 Overview

The thermogravimetric analyzer measures the quality of the sample during the temperature rise of the program and characterizes the composition of the material (Moisture, volatile or ash), physical or chemical changes Characteristic temperature (volatilization, decomposition or oxidation) and chemical reactions Dynamics and other information. The thermogravimetric analyzer is usually composed of a heating furnace, a temperature control and measurement system, a mass weighing system, and operating software and Data processing system and so on. There are two forms of heating furnace, respectively, vertical and horizontal. Vertical furnace has two kinds of quality Weighing method, respectively, for the hanging and on the dish. hanging down the balance unit at the top, by a hanging hanging wire hanging The sample dish is a sample holder that supports the sample holder at the top of the stent and the lower end of the bracket. Thermogravimetric analyzer The two main measurement parameters are the mass and temperature, the unit of measurement were mg (mg) and degrees Celsius (℃).

4 Measurement performance requirements

The metrological performance requirements of the instrument are shown in Table 1. Table 1 instrument measurement performance requirements Test item measurement performance Mass zero drift ≤ 0.05mg Mass baseline drift ≤ 0.20mg Mass repeatability ≤ (0.001m0 0.004mg) Quality indication error does not exceed ± (0.001m0 0.020mg) Heating rate indication error does not exceed ± 3.0% Temperature repeatability Curie point ≤ 2.0 ℃ Melting point ≤1.0 ℃

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