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GB/T 46081-2025Vacuum technology - Vacuum gauges - Specifications, calibration and measurement uncertainties for spinning rotor gauges (English PDF)

真空技术真空计磁悬浮转子真空计的规范、校准和测量不确定度

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Issued by

State Administration for Market Regulation, National Standardization Administration

Level / Type

National · Recommended

Issue date

August 29, 2025

Implementation date

August 29, 2025

Scope

GB/T 46081-2025 is the English-translated version of 真空技术真空计磁悬浮转子真空计的规范、校准和测量不确定度.

GB/T 46081-2025 defines the terms related to the magnetic suspension rotor vacuum gauge, which it abbreviates SRG and which the page's English title renders as spinning rotor gauge, specifies the parameters required for such gauges and describes in detail their calibration procedures and the uncertainty components these require; clause 1 states that the document is applicable up to a pressure limit of 2 Pa.

The index is short and lists, after the scope, the normative references and the terms and definitions, clause 4 on symbols and abbreviations, clause 5 on the principle of the magnetic levitation rotor vacuum gauge, clause 6 on its specifications, clause 7 on additional optional specifications for magnetically suspended rotor vacuum gauges, clause 8 on calibration and clause 9 on measurement uncertainty during use, followed by a list of references; the index shows no appendix.

Clause 2 cites ISO 3529-1, ISO 3529-3, ISO 3567, ISO 27893, ISO/IEC Guide 98-3, ISO/IEC Guide 99, IEC 60050 (300-311) and IEC 60050 (300-312), each with a note naming the corresponding Chinese document, namely GB/T 3163-2024, GB/T 34873-2017, GB/T 34876-2017, GB/T 27418-2017 and GB/T 2900.77-2008.

The draft breaks off inside that list of normative references, during the IEC 60050 (300-312) entry, so no clause text after clause 2 is shown.

The introduction states that the document extends ISO 3567 and supplements ISO 27893 for describing the characteristics of magnetically suspended rotor vacuum gauges used in calibration or as reference vacuum gauges, that such gauges are used to measure high and medium vacuum pressures, and that for pressure value transmission and the measurement of medium and high vacuum pressures it is recommended to provide the parameters, calibration results and uncertainties it specifies.

The document is an identical adoption of ISO 24477:2025, was proposed by the China Machinery Industry Federation and is under the jurisdiction of the National Technical Committee on Vacuum Technology Standardization (SAC/TC18).

The page records no earlier edition that it replaces; it was issued on 29 August 2025 and has applied since 29 August 2025.

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Document preview — GB/T 46081-2025

National Standard of the People's Republic of China

ICS: 23.160
Classification: J 78

Issued by: State Administration for Market Regulation, National Standardization Administration

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Symbols and abbreviations
5 Principle of Magnetic Levitation Rotor Vacuum Gauge
6 Specifications for Magnetic Levitation Rotor Vacuum Gauges
7 Additional (optional) specifications for magnetically suspended rotor vacuum gauges
8 Calibration
9 Measurement uncertainty during use
Reference

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is equivalent to ISO 24477:2025 "Vacuum technology - Vacuum gauges - Specifications, calibration and measurement of magnetically suspended rotor vacuum gauges". Certainty".

Introduction

This document is an extension of ISO 3567 for describing the characteristics of magnetically suspended rotor vacuum gauges (SRGs) for use in calibration or as reference vacuum gauges. and a supplement to ISO 27893.

Magnetic levitation rotor vacuum gauges are used to measure high vacuum and medium vacuum pressure. Use this type of vacuum gauge for pressure value transmission and measurement.

For medium and high vacuum pressures, it is recommended to provide the relevant parameters, calibration results and uncertainties specified in this document.

1 Scope

This document defines the terms related to the magnetic suspension rotor vacuum gauge (SRG) [2]-[4], specifies the parameters required for the SRG, and describes in detail the The calibration procedures and required uncertainty components for these vacuum gauges are given in this document.

This document is applicable up to a pressure limit of 2 Pa.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document.

ISO 3529-1 Vacuum technology - Vocabulary - Part 1: Basic terms General terms)

Note: GB/T 3163-2024 Vacuum technical terminology (ISO 3529-1:2019, ISO 3529-2:2020, ISO 3529-3:2014, MOD)

ISO 3529-3 Vacuum technology - Vocabulary - Part 3: Total and partial pressure vacuum gauges

Note: GB/T 3163-2024 Vacuum technical terminology (ISO 3529-1:2019, ISO 3529-2:2020, ISO 3529-3:2014, MOD)

ISO 3567 Vacuum technology - Direct comparison calibration of vacuum gauges with standard vacuum gauges

Note: GB/T 34873-2017 Vacuum gauge calibration by direct comparison with a standard vacuum gauge (ISO 3567:2011, IDT)

ISO 27893 Vacuum technology - Evaluation of the uncertainty of calibration results by direct comparison of vacuum gauges with standard vacuum gauges

Note: GB/T 34876-2017 Vacuum technology Vacuum gauge and standard vacuum gauge direct comparison calibration results uncertainty assessment (ISO 27893:2011, IDT)

ISO /IEC Guide 98-3 Uncertainty in measurement Part 3: Guide to the expression of uncertainty in measurement (GUM..1995)

Note: GB/T 27418-2017 Evaluation and expression of uncertainty in measurement (ISO /IEC Guide 98-3.2008, MOD)

ISO /IEC Guide 99 International Vocabulary of Metrology Basic and General Concepts and Related Terms (VIM) [Internationalvocabu-

IEC 60050 (300-311) International Electrotechnical Vocabulary - Electrical and electronic measurements and instrumentation - Part 311: General terms for measurement

Note: GB/T 2900.77-2008 Electrical terminology Electrical and electronic measurement and instrumentation Part 1: General terminology for measurement [IEC 60050(300-311).2001,IDT]

IEC 60050 (300-312) International Electrotechnical Vocabulary - Electrical and electronic measurements and instrumentation - Part 312: General techniques for electrical measurement

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 30 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 3529-1 · ISO 3529-3 · ISO 3567 · ISO 27893 · ISO/IEC Guide 98-3 · ISO/IEC Guide 99 · IEC 60050

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