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JJF 1962-2022 English PDF

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US$329.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1962-2022: Calibration Specification for Magnetic Suspension Spinning Rotor Gauges
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1962-2022	329	Add to Cart	3 days	Calibration Specification for Magnetic Suspension Spinning Rotor Gauges	Valid

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Basic data

Standard ID: JJF 1962-2022 (JJF1962-2022)
Description (Translated English): Calibration Specification for Magnetic Suspension Spinning Rotor Gauges
Sector / Industry: Metrology & Measurement Industry Standard
Word Count Estimation: 15,161
Date of Issue: 2022-04-29
Date of Implementation: 2022-10-29
Issuing agency(ies): State Administration for Market Regulation

JJF 1962-2022: Calibration Specification for Magnetic Suspension Spinning Rotor Gauges

---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 Magnetic Suspension Spinning Rotor Gauges National Metrology Technical Specifications of the People's Republic of China Calibration specification for magnetic levitation rotor vacuum gauge Released on 2022-04-29 Implementation on 2022-10-29 Released by the State Administration for Market Regulation Calibration specification for magnetic levitation rotor vacuum gauge Responsible unit. National Pressure Measurement Technical Committee Main drafting unit. China Institute of Metrology Participating in the drafting unit. Lanzhou Institute of Space Technology Physics This specification entrusts the National Pressure Measurement Technical Committee to be responsible for interpretation The main drafters of this specification. Yu Hongyan (National Institute of Metrology) Wang Jinku (National Institute of Metrology) Participating drafters. Feng Yan (Lanzhou Institute of Space Technology Physics) Cheng Yongjun (Lanzhou Institute of Space Technology Physics)

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 Terms and units of measurement(1) 3.1 Terminology(1) 3.2 Units of measurement(1) 4 Overview(2) 5 Metrological characteristics(2) 6 Calibration conditions(3) 6.1 Environmental conditions (3) 6.2 Measuring standards and other equipment (3) 7 Calibration Items and Calibration Methods(3) 7.1 Calibration items(3) 7.2 Calibration method(3) 7.2.1 Preparations (3) 7.2.2 Residual damping (4) 7.2.3 Adaptation coefficient (5) 7.2.4 Disassembly(5) 8 Calibration result expression(5) 9 Recalibration interval(5) Appendix A Magnetic Suspension Rotor Vacuum Gauge Calibration Record Format (6) Appendix B Calibration Certificate (Inner Page) Format (7) Appendix C Example of Evaluation of Measurement Uncertainty for Calibration of Adaptation Coefficient (8)

Introduction

JJF 1071-2010 "Rules for Compilation of National Metrology Calibration Standards", JJF 1001-2011 "General Metrology Terminology and Definition", JJF 1059.1-2012 "Evaluation and Expression of Measurement Uncertainty" and GB/T 3163-2007 "Vacuum Technology "Technical Terms" together constitute the basic series of specifications formulated by this specification. This specification refers to GB/T 34873-2017 "Direct Comparison and Calibration of Vacuum Gauge and Standard Vacuum Gauge", GB/T 34876-2017 "Uncertainty of Calibration Results of Direct Comparison of Vacuum Technology Vacuum Gauges and Standard Vacuum Gauges" "Assessment" was formulated, the basic principles were adopted, and the specific methods and technical indicators were refined, supplemented and improved. Revise. This specification is published for the first time. Calibration specification for magnetic levitation rotor vacuum gauge

1 Scope

This specification is applicable to the calibration of magnetic levitation rotor vacuum gauges with a measuring range of (1×10-4~1)Pa.

2 References

This specification references the following documents. JJF 1008-2008 pressure measurement terminology GB/T 3163-2007 Vacuum Technical Terms GB/T 3164-2007 Graphical symbols for vacuum technology GB/T 34873-2017 Direct comparison and calibration of vacuum gauges and standard vacuum gauges GB/T 34876-2017 Inaccurate calibration results of direct comparison of vacuum technology vacuum gauges with standard vacuum gauges Quantitative assessment For dated references, only the dated version applies to this specification; for undated references document, its latest version (including all amendments) applies to this specification.

3 Terminology and units of measurement

3.1 Terminology 3.1.1 vacuum gauge An instrument for measuring the pressure of gases or vapors below atmospheric pressure. [GB/T 3163-2007, definition 4.1.2] Vacuum measurements made on the basis of the principle that the attenuation of the rotational speed of a magnetic levitation rotor is related to the external friction of gas molecules around it meter. [JJF 1008-2008, definition 11.30] 3.1.3 Calibration chamber calibrationchamber The vacuum chamber used to house the instrument being calibrated in a standard setup. 3.1.4 Residual pressure residualpressure The lowest pressure achievable in the calibration chamber. [ISO 3567.2011(E), definition 3.16] 3.1.5 Adaptation factor accommodationfactor,σ The ratio of the pressure measurement value of the magnetic levitation rotor vacuum gauge to the standard pressure value. 3.1.6 residual damping residualdrag, poffs When the magnetic levitation rotor vacuum gauge measures the pressure, the eddy current generated due to the uneven magnetic field of the rotor causes the rotor speed to drop, causing the vacuum gauge to display the pressure value. 3.2 Units of measurement ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1962-2022_English be delivered?

Answer: Upon your order, we will start to translate JJF 1962-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1962-2022_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1962-2022_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.