GB/T 45856-2025 Active National standards

GB/T 45856-2025 Vacuum technology—Vacuum gauges—Specifications,calibration and measurement uncertainties for Pirani gauges

Publish Date: 2025-08-01 Implement Date: 2025-11-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 45856-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Vacuum technology and equipment

ICS Name: Vacuum technology

Publish Date: 2025-08-01

Implement Date: 2025-11-01

Pages: 20 pages

Scope

This document establishes the parameters of Pirani vacuum gauges, describes their calibration steps, and specifies the measurement uncertainties that need to be considered when using these vacuum gauges.
This document is applicable to Pirani vacuum gauges with a working pressure range of 0.01 Pa to 150 kPa.
When calibrating Pirani vacuum gauges and using them as reference standards, this document supplements ISO 3567 and ISO 27893.
Additionally, this document also describes the methods of characterizing the response time and hysteresis of Pirani vacuum gauges.