GB/T 29820.2-2024

Active

Assessment of uncertainty in the calibration and use of flow measurement devices—Part 2: Non-linear calibration relationships

流量测量装置校准和使用不确定度的评估 第2部分：非线性校准关系

Standard Type
GBT
ICS
17.120.10
CCS
N12
Status
Active
Issue Date
2024-12-31
Implementation
2025-07-01
Centralized Committee
中国机械工业联合会
Issuing Authority
国家市场监督管理总局、国家标准化管理委员会

Application Summary AI generated

This standard provides methods for evaluating measurement uncertainty when flow devices have non-linear calibration curves, such as those used with differential pressure meters or turbine flowmeters. It is applied in industrial flow measurement, laboratory calibration, and process control where the relationship between the measured signal and flow rate is not a straight line. The standard ensures accurate uncertainty assessment for devices like orifice plates, Venturi tubes, and Coriolis meters in sectors including oil and gas, water treatment, and chemical processing.

Related Standards

GB/Z 33902-2017 Measurement of fluid flow by means of pressure differential devices—Guidelines on the effect of departure from the specifications and operating conditions given in GB/T 2624 and the correction methods GB/Z 33875-2017 Guidelines for the use of GB/T 2624—2006 GB/Z 35140-2017 Measurement of fluid flow by means of pressure-differential devices—Guidelines for the specification of orifice plates, nozzles and Venturi tubes beyond the scope of GB/T 2624 GB/Z 35588-2017 Measurement of wet gas flow by means of pressure differential devices inserted in circular cross-section conduits GB/Z 44813-2024 Measurement of fluid flow in closed conduits—Effects of flow pulsations on flow-measurement instruments GB/T 18940-2003 Measurement of gas flow in closedconduits--Turbine meters GB/T 11826-2002 Rotating current meter GB/T 18660-2002 Measurement of conductive liquid flow in closed conduits--Method using electromagnetic flowmeters
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.