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JJF 1631-2017 English PDF

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JJF 1631-2017: Calibration Specification for Continuous Thermocouples
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Basic data

Standard ID JJF 1631-2017 (JJF1631-2017)
Description (Translated English) Calibration Specification for Continuous Thermocouples
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A54
Classification of International Standard 17.200
Word Count Estimation 28,263
Date of Issue 2017-09-26
Date of Implementation 2017-12-26
Quoted Standard JJG 160-2007
Regulation (derived from) General Administration of State Quality Inspection Announcement 2017 No. 78
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard is applicable to the calibration of continuous thermocouples using the data in Appendix A as indexing tables in the range of 80��C to 80��C. The calibration of continuous thermocouples in other temperature ranges can also refer to this standard.

JJF 1631-2017: Calibration Specification for Continuous Thermocouples

---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.
(Continuous thermocouple calibration specification) People's Republic of China National Measurement Specifications Continuous thermocouple calibration specification Calibration Specification for Contoured Thermocouples 2017-09-26 Posted 2017-12-26 Implementation General Administration of Quality Supervision, Inspection and Quarantine released Continuous thermocouple calibration specification The focal point. National Temperature Measurement Technical Committee The main drafting unit. Beijing Institute of Metrology China Institute of Metrology Chongqing Materials Research Institute Co., Ltd. Tianjin Institute of Measurement Supervision and Inspection Participate in the drafting unit. Shandong Institute of Metrology Zhejiang Ritter Electrical Co., Ltd This specification entrusts the national temperature measurement technical committee to be responsible for explaining The main drafters of this specification. Zhang Ke (Beijing Institute of Metrology and Measurement) Chen Wei Xin (China Institute of Metrology) Chen Lixin (Chongqing Institute of Materials Co., Ltd.) Tian Yun (Tianjin Institute of Metrology and Supervision) Participate in the drafters. Wu Jian (Beijing Institute of Metrology and Measurement) Li Ying (Shandong Institute of Metrology) Wu Gallen (Zhejiang Rant Electrical Co., Ltd.)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2 References (1) 3 Terms (1) 3.1 Continuous Thermocouple (1) 3.2 Thermal materials (1) 3.3 indication deviation (1) 3.4 Uniformity (1) 4 Overview (1) 5 Metrology (2) 5.1 indication deviation (2) 5.2 Uniformity (2) 6 Calibration conditions (2) 6.1 Environmental conditions (2) 6.2 Measuring standard equipment and ancillary equipment (2) 7 Calibration Items and Calibration Methods (3) 7.1 Calibration Items (3) 7.2 Calibration Methods (3) 7.3 Calibration Results Processing (6) 8 expression of calibration results (7) Appendix A Continuous thermocouple indexing table (9) Appendix B Thermocouple test furnace calibration deviation indication method (13) Appendix C Continuous Thermocouple Calibration Original Record (16) Appendix D Calibration Certificate Internal Page Format (19) Appendix E continuous thermocouple temperature indication deviation calibration uncertainty evaluation example (20)

Introduction

This specification is based on JJF 1071-2010 "National Metrology Calibration Rules Preparation Rules" drafting, in which the measurement results are not The determination of the degree of certainty is based on JJF 1059.1-2012 "Evaluation and Expression of Measurement Uncertainty". This specification is first released. Continuous thermocouple calibration specification

1 Scope

This standard applies to continuous thermocouple data in Appendix A indexing table, in the range of 80 ℃ ~ 800 ℃ calibration. Continuous thermocouple calibration in other temperature ranges can also refer to this specification.

2 reference documents

This specification cites the following documents. JJG160-2007 standard platinum resistance thermometer For dated references, only the dated version applies to this specification; for undated references The latest version (including all amendments) applies to this specification.

3 Terms

3.1 Continuous thermocouple continuousthermocouples An able to detect the highest temperature along the line, for temperature alarm over the armored thermocouple. 3.2 Thermal materials thermo-sensitivematerial Filled with continuous thermocouple between two hot electrodes and between the hot electrode and the metal sleeve with a negative resistance - temperature Coefficient properties of powdered inorganic material. 3.3 Indication deviation indicationdeviation In the reference end is 0 ℃, the continuous thermocouple thermocouple output on its index table deviation from the temperature converted into Degree value. 3.4 uniformity uniformityofvalue Among the series of indication deviations obtained at several temperature locations along a length distribution of a continuous thermocouple at a specific temperature, most The difference between the maximum value and the minimum value.

4 Overview

Continuous thermocouple also known as heat-seeking thermocouple, is a thermocouple without fixed hot junction, through the armor process will be Thermal material (filler material) and K-type thermocouple together, in a certain temperature range, can be continuously generated With the contact with the hottest temperature in the corresponding thermoelectric power signal, you can get the highest temperature along the line. In a row Thermocouples are provided with terminals on either or both sides of the thermocouple to measure the thermoelectric power potential from either side or from one side respectively. continuous Thermocouple temperature measurement range is generally 80 ℃ ~ 800 ℃, the length of 2m to 40m or so, covering a wide range of savings A large number of temperature sensors and electrical test equipment. Widely used in chemical, mechanical, energy, shipping, aviation, telecommunications, electricity Force, storage and other large, large-scale, large space places and dangerous areas of fever, overheating monitoring, pre Police and so on. Continuous thermocouple structure shown in Figure 1.

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