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JJF 1376-2012 English PDF

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JJF 1376-2012: Calibration Specification for Box-type Resistance Furnace
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JJF 1376-2012English439 Add to Cart 4 days [Need to translate] Calibration Specification for Box-type Resistance Furnace Valid JJF 1376-2012

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Basic data

Standard ID JJF 1376-2012 (JJF1376-2012)
Description (Translated English) Calibration Specification for Box-type Resistance Furnace
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 19,184
Quoted Standard GB/T 10066.4; JB/T 8195.1; JB/T 8195.7
Regulation (derived from) AQSIQ Announcement No. 206 of 2012
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to working temperature not higher than 1300��C box-type resistance furnace (hereinafter referred to as box-type furnace) calibration. Other similar resistance furnace can also refer to the specification for calibration.

JJF 1376-2012: Calibration Specification for Box-type Resistance Furnace

---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 Box-type Resistance Furnace People's Republic of China National Metrology Technical Specifications Box resistance furnace calibration specification Issued on. 2012-12-12 2013-03-12 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Box resistance furnace calibration specification Focal point. the National Technical Committee of temperature measurement Main drafting unit. Liaoning Provincial Institute of Metrology Participated in the drafting unit. Shenyang Metrology hospital Zhejiang Institute of Metrology National Quality Supervision and Inspection Center Furnace This specification commissioned the National Technical Committee is responsible for interpretation of temperature measurement The main drafters of this specification. Hou Sulan (Liaoning Provincial Institute of Metrology) Wang Hao (Liaoning Provincial Institute of Metrology) Dong Liang (Liaoning Provincial Institute of Metrology) Drafters participate. Luo Tao (Shenyang Metrology Institute) Shen Zhong only (Zhejiang Institute of Metrology) Lee Kun (EAF National Quality Supervision and Inspection Center)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 Terms (1) 3.1 Working temperature (1) 3.2 nominal temperature (1) 3.3 Workspace (1) 3.4 furnace temperature uniformity (1) 3.5 furnace temperature stability (1) 3.6 Deviation furnace (1) 3.7 maximum temperature in the furnace (2) 4 Overview (2) 4.1 Principles and structures (2) 4.2 Purpose (2) 5 Metrological characteristics (2) 5.1 furnace temperature uniformity (2) 5.2 furnace temperature stability (2) Furnace temperature deviation 5.3 (2) 5.4 maximum temperature in the furnace (2) Calibration Condition 6 (2) 6.1 environmental conditions (2) 6.2 standards and other measuring equipment (2) 7 calibration items and calibration methods (3) 7.1 calibration items (3) 7.2 Visual inspection (3) 7.3 Calibration method (3) 7.4 Data Processing (5) Expression 8 calibration results (6) 9 Recalibration interval (6) Appendix A box-type resistance furnace calibration records reference format (7) Appendix B Box resistance furnace calibration reference format (8) Calculation Examples Appendix C box-type resistance furnace (9) Appendix D box measurement uncertainty Resistance Furnace Uniformity Evaluation Examples (10)

Introduction

This specification is based on JJF 1071-2010 "National Calibration Specifications writing rules" were prepared. GB/T 10066.4-2004 "Standard Test Method for electric devices - Part 4. Indirect resistance furnaces", JB/T 8195.7- 2007 "Indirect resistance furnaces - Part 7. SX series of experiments using a box furnace," is the technical basis for the drafting work. The main technical content of this specification is as follows. --- Select temperature zone uses a GB/T 10066.4-2004 Test methods "electric equipment - Part 4. Indirect resistance furnaces "method (see specification 7.3.2); --- Distributed measurement points using the GB/T 10066.4-2004 the provisions (see specification 7.3.3); --- Measuring furnace temperature uniformity and formulas using the GB/T 10066.4-2004 Method (see Specification 7.4.1), in the calculation formula increases the amount of correction; Measurement Method --- furnace temperature stability are the same as GB/T 10066.4-2004, but the formula is not the same (see Regulation Fan 7.4.2); --- Increasing the oven temperature calibration methods and formulas deviation (see specification 7.4.3); --- Increasing the maximum temperature in the furnace calibration methods and calculation formulas (see specification 7.4.4); --- Volume greater than 0.15m3 box resistance furnace calibration, using GB/T 10066.4-2004 Methods (See Specification 7.3.3b); --- Furnace temperature furnace temperature uniformity and stability requirements cited reference JB/T 8195.7-2007 "indirect resistance furnace Part 7. SX series of experiments using a box furnace "and JB/T 8195.1-1999" indirect RX series box-type resistance furnace Resistance furnace "technical requirements (see Table 1); --- Measurement Uncertainty furnace temperature uniformity of assessment, according to JJF 1059-1999 "Measurement Uncertainty Table Show "(see Appendix D). This specification is the first release. Box resistance furnace calibration specification

1 Scope

This standard applies to working temperature not higher than 1300 ℃ box resistance furnace (hereinafter referred to as box furnace) calibration. Other similar resistance furnace can also be calibrated with reference to the present specification. 2. References GB/T 10066.4 Test methods for electroheat installations - Part 4. Indirect resistance furnaces JB/T 8195.1 indirect resistance furnace RX series box-type resistance furnace JB/T 8195.7 Indirect resistance furnaces - Part 7. SX series of experiments using a box furnace For dated references, only the dated edition applies to this specification; undated references, The latest version (including any amendments) applies to this specification.

3 Terms

GB/T 10066.4-2004 "Standard Test Method for electric devices - Part 4. Indirect resistance furnaces" as defined below The terms and definitions apply to this specification. 3.1 Operating temperature workingtemperature Normal temperature box furnace design provisions, usually a range of temperatures. In this temperature range box furnace Should be able to meet the prescribed furnace temperature uniformity, etc., on this temperature range, the lower limit respectively, said maximum and minimum operating temperature. [GB/T 10066.4-2004,3.5] 3.2 nominal temperature nominaltemperature Temperature according to the test method requirements specified value or temperature value determined in advance as required. [Quote part GB/T 5170.1-2008,3.1.5] 3.3 Workspace workingzone Regulations and indicated on drawings, furnace temperature uniformity to meet other requirements, allows the furnace space to place the burden of designing a box furnace between. [GB/T 10066.4-2004,3.7] 3.4 furnace temperature uniformity furnacetemperatureuniformity When the box furnace at calibration temperature to reach thermal equilibrium, the temperature measuring point temperature of each zone, the measured maximum, minimum paid Actual temperature difference between the center of each of the actual temperature. [GB/T 10066.4-2004,3.15] 3.5 furnace temperature stability furnacetemperaturestability Box furnace at calibration temperature, thermally stable state is reached, the center (monitoring) dot the measured temperature of the maximum and minimum The difference between the average value, respectively. [GB/T 10066.4-2004,3.16] 3.6 furnace temperature deviation furnacetemperaturedeviation When a box furnace to reach thermal equilibrium, each temperature measurement point temperature zone within the specified time, the measured maximum, minimum paid Actual temperature and the nominal temperature, respectively, and lower deviation. [Section references GB/T 5170.1-2008,3.2.4]

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