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JJF 1262-2010 English PDF

US$579.00 · In stock
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JJF 1262-2010: Calibration Specification for Sheathed Thermocouples
Status: Valid

JJF 1262: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1262-2010	English	579	Add to Cart	5 days [Need to translate]	Calibration Specification for Sheathed Thermocouples	Valid	JJF 1262-2010
JJF 1262-1990	English	239	Add to Cart	2 days [Need to translate]	O.T.N. of the Secondary Standard for Middle frequency Vibration	Obsolete	JJF 1262-1990

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Basic data

Standard ID	JJF 1262-2010 (JJF1262-2010)
Description (Translated English)	Calibration Specification for Sheathed Thermocouples
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A54
Classification of International Standard	17.200
Word Count Estimation	25,230
Date of Issue	2010-09-06
Date of Implementation	2010-12-06
Quoted Standard	GB/T 18404-2001; GB/T 16839.1-1997; GB/T 16839.2-1997; GB/T 4989-1994
Regulation (derived from)	AQSIQ Announcement No. 100 of 2010
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to measuring range (-40 ~ 1100)��C, metal sleeve length not less than 500mm of inexpensive metal sheathed thermocouple calibration.

JJF 1262-2010: Calibration Specification for Sheathed 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.
Calibration Specification for Sheathed Thermocouples People's Republic of China National Metrology Technical Specifications Sheathed thermocouple calibration specification Issued on. 2010-09-06 2010-12-06 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Sheathed thermocouple calibration specification les This specification by the State Administration of Quality Supervision, Inspection and Quarantine approved on September 6, 2010, and from From December 6, 2010 into effect. Focal point. the National Technical Committee of temperature measurement Main drafting unit. Liaoning Provincial Institute of Metrology Participated in the drafting. Northeastern University Dandong City Institute of Measurement and Testing Technology Jinzhou City metrological verification tests This specification temperature measured by the National Technical Committee is responsible for interpretation The main drafters of this specification. Hou Sulan (Liaoning Provincial Institute of Metrology) Xu Hongguang (Liaoning Provincial Institute of Metrology) Xing Zhihong (Liaoning Provincial Institute of Metrology) Drafters participate. Wang Hao (Northeastern University) Song Guangyuan (Institute of Measurement and Testing Technology Dandong City) Zhao Yuzhu (Jinzhou City metrological verification tests)

1 Scope (1) 2. Referenced Documents (1) 3 Overview (1) 4 Metrological characteristics (1) 4.1 Insulation resistance at room temperature (1) 4.2 shows the value of tolerance (1) Calibration Condition 5 (2) 5.1 environmental conditions (2) 5.2 Calibration with standard equipment and ancillary equipment (2) 6 calibration items and calibration methods (3) 6.1 calibration items (3) 6.2 Calibration method (4) 6.3 Data Processing (5) Expression 7 Calibration results (5) 8 recalibration intervals (6) Appendix A to select the calibration reference temperature sheathed even point (7) Appendix B sheathed thermocouple thermal emf and the deviation of the indexing table is calculated (8) Appendix C sheathed thermocouple calibration records reference format (11) Appendix D sheathed thermocouple calibration reference format (13) Appendix EK, N, E, J, T-type sheathed thermocouple thermal emf tolerance table (14) Appendix FK, N, E, J, T-type thermocouples Baidu whole point differential thermal electromotive force table (16) Appendix G sheathed thermocouple thermal emf measurements Uncertainty Evaluation Examples (17) Sheathed thermocouple calibration specification

1 Scope

This standard applies to the measurement range (-40 ~ 1100) ℃, the metal sleeve length not less than 500mm inexpensive metal Sheathed thermocouple calibration.

2 Citations

GB/T 18404-2001 sheathed thermocouple cables and thermocouples GB/T 16839.1-1997 Thermocouples - Part 1. indexing table GB/T 16839.2-1997 Thermocouples - Part 2. Tolerances GB/T 4989-1994 thermocouple compensation wire When using this specification it should be noted that using the currently valid version of the documents cited.

3 Overview

Sheathed thermocouple (hereinafter referred to as sheathed thermocouple) thermocouple wire is insulated with inorganic, metallic armor casing package Even cable installation made for a variety of industrial process temperature measurement thermocouple. By measuring the form of the end structure is divided into insulation Type, exposed junction type, then shell and separate insulated. Material divided by the temperature sensing element armor nickel-chromium - nickel silicon thermocouple (K type), armored nickel-chromium silicon - Ni-Si-Mg thermocouple (N-type), armored nickel-chromium - copper-nickel thermocouple (E-type), armored iron - copper Ni thermocouple (J-type) and armored copper - copper-nickel thermocouple (T type).

4 Metrological characteristics

4.1 Insulation resistance at room temperature Armored dual temperature insulation resistance should be consistent with Table 1. Table 1 armored dual temperature insulation resistance project Test temperature No indexing the minimum insulation resistance length (20 ± 15) ℃ K, N, E, J, T Not less than 1m Rr · L≥1000MΩ · m Less than 1m Rr≥1000MΩ 4.2 Indication Tolerance Indication armor even tolerance shown in Table 2.

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