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JJG 75-2022 English PDF

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Q: Should I purchase the latest version JJG 75-2022?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 75-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$659.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 75-2022: Standard Platinum-10%Rhodium/Platinum Thermocouples
Status: Valid

JJG 75: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 75-2022	659	Add to Cart	5 days	Standard Platinum-10%Rhodium/Platinum Thermocouples	Valid
JJG 75-1995	559	Add to Cart	3 days	Verification Regulation of the Standard Platinum-10% Rhodium/Platinum Thermocouple	Obsolete
JJG 75-1982	RFQ	ASK	3 days	Verification Regulation of the Standard Platinum Rhodium 10-Platinum Thermocouple	Obsolete

Similar standards

JJG 229 JJF 1187 JJF 1107 JJG 111 JJG 075 JJF 075

Basic data

Standard ID: JJG 75-2022 (JJG75-2022)
Description (Translated English): Standard Platinum-10%Rhodium/Platinum Thermocouples
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A54
Word Count Estimation: 32,398
Date of Issue: 2022-12-27
Date of Implementation: 2023-06-27
Issuing agency(ies): State Administration for Market Regulation

JJG 75-2022: Standard Platinum-10%Rhodium/Platinum 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.
National Metrology Verification Regulations of the People's Republic of China Standard Platinum Rhodium 10-Platinum Thermocouple Released on 2022-12-27 2023-06-27 Implementation Released by the State Administration for Market Regulation Standard Platinum Rhodium 10-Platinum Thermocouple Verification Regulations Replace JJG 75-1995 Responsible Unit. National Temperature Measurement Technical Committee Main drafting unit. China Institute of Metrology Participated in the drafting unit. Beijing Institute of Metrology and Testing Sciences Hubei Institute of Metrology and Testing Technology Xinjiang Uygur Autonomous Region Institute of Metrology and Testing Kunming Dafang Automatic Control Technology Co., Ltd. Fluke Testing Instruments (Shanghai) Co., Ltd. This regulation entrusts the National Temperature Measurement Technical Committee to be responsible for interpretation The main drafters of this regulation. Zheng Wei (National Institute of Metrology) Participating drafters. Tang Lei (National Institute of Metrology, China) Zhang Xiwen (Beijing Institute of Metrology and Testing Sciences) Luo Xiaoping (Hubei Provincial Institute of Metrology and Testing Technology) Xue Wenyan (Xinjiang Uygur Autonomous Region Institute of Metrology and Testing) Li Fuhong (Kunming Dafang Automatic Control Technology Co., Ltd.) Chen Yu [Fluke Testing Instruments (Shanghai) Co., Ltd.]

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 Overview(1) 4 Metrological performance requirements (2) 4.1 Thermoelectric characteristics (2) 4.2 Stability(2) 5 General technical requirements (2) 5.1 Electrodes(3) 5.2 Identification(3) 5.3 Structure (3) 6 Measuring Instrument Control(3) 6.1 Test conditions (3) 6.2 Verification items (5) 6.3 Verification method (5) 6.4 Processing of verification results (8) 6.5 Verification period(9) Appendix A (0~1085)℃ Temperature Zone Standard Platinum Rhodium 10-Platinum Thermocouple Thermoelectromotive Force-Temperature Calculation Method (10) Appendix B Platinum Rhodium 10-Platinum Thermocouple Thermoelectromotive Force-Temperature Reference Function (11) Appendix C Verification Record Format (14) Appendix D Verification Certificate/Verification Result Notification Inner Page Format (17) Appendix E Special Requirements for Calibration of Standard Platinum-Rhodium 10-Platinum Thermocouples with Fixed Sleeve (18) Appendix F Example of Verification Result Calculation (19) Appendix G Additional Cleaning Methods for Standard Platinum-Rhodium 10-Platinum Thermocouples(20) Appendix H Measurement Uncertainty Evaluation Example (21)

Introduction

JJF1002 "Rules for Writing National Metrology Verification Regulations", JJF1001 "General Metrology Terms and Definitions", JJF1059.1 "Assessment and Expression of Measurement Uncertainty" together constitute the basic series supporting the formulation and revision of this regulation specification. Compared with JJG 75-1995, except editorial modifications, the main technical changes are as follows. --- Increased the introduction part; --- Extend the lower limit of the scope of application of the regulations to 0°C; --- Increase the description of the standard thermocouple structure; --- The requirements for the thermal electromotive force of thermocouples have been adjusted; --- Deleted the operation part of making thermocouple; ---Adjusted some verification operation methods; --- Deleted the differential method measurement; --- Added the content of standard platinum-rhodium 10-platinum thermocouple with fixed casing structure. The previous releases of JJG 75-1995 are as follows. ---JJG 75-1982; --- Gauge (G) Heat-5-1965. Standard Platinum Rhodium 10-Platinum Thermocouple Verification Regulations

1 Scope

This regulation is applicable to the first-class and second-class standard platinum-rhodium 10-platinum thermocouples at (0~1084.62) °C for the first verification and subsequent verification. Continue checking.

2 References

JJF1007-2007 Terms and definitions of temperature measurement terms GB/T 1598-2010 Platinum rhodium 10-platinum thermocouple wire, platinum rhodium 13-platinum thermocouple wire, platinum rhodium 30-platinum rhodium 6 heat Galvanic wire GB/T 16839.1 Thermocouple Part 1.Electromotive force specification and tolerance For dated references, only the dated version applies to this regulation; for undated references document, its latest version (including all amendments) applies to this regulation.

3 Overview

Thermocouples use the Seebeck effect to measure temperature. Platinum Rhodium 10-Platinum Thermocouple It is a thermometer with high accuracy and good physical and chemical properties in the thermocouple series. Platinum-rhodium 10-platinum thermocouple, its positive pole (SP) is a platinum-rhodium alloy containing 10% rhodium, and its negative pole (SN) is pure platinum. standard platinum Rhodium 10-platinum thermocouples are mainly used for temperature value transmission, and can also be used for precision temperature measurement in a wider range. The basic structure of a standard platinum-rhodium 10-platinum thermocouple is shown in Figure 1.Electrodes and double-hole ceramic tubes (alumina content is not low at 95%) constitute the most basic structure of a standard platinum-rhodium 10-platinum thermocouple. The outer diameter of the double-hole ceramic tube is ϕ (3~4)mm, The hole diameter is ϕ (0.8~1.0)mm, the length is (500~550)mm, the appearance is clean and no breakage is allowed. usually at The exposed electrode part of the standard platinum-rhodium 10-platinum thermocouple is covered with a section of plastic insulating tube, and this junction should be maintained during use. structure to avoid electrode short circuit and external contamination. A part of the standard platinum-rhodium 10-platinum thermocouple is equipped with a removable ceramic outer sheath on the basis of the basic structure tube, encapsulating the reference terminal and leading out the measurement line, the structure is shown in Figure 2.It is mainly used for base metal thermocouples and armored Calibration of thermocouples or direct temperature measurement. This type of thermocouple needs to remove the ceramic outer protective sleeve before the verification. other features See Appendix E for special requirements. Figure 1 Schematic diagram of the basic structure of a standard platinum-rhodium 10-platinum thermocouple ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 75-2022_English be delivered?

Answer: Upon your order, we will start to translate JJG 75-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJG 75-2022_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 75-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version JJG 75-2022?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 75-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.