GB/T 5275.2-2014
Gas analysis.Preparation of calibration gas mixtures using dynamic volumetric methods.Part 2:Volumetric pumps (English Version)
- Standard No.
- GB/T 5275.2-2014
- Language
- Chinese, Available in English version
- Release Date
- 2014
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2023-07
- Replace By
- GB/T 5275.2-2022
- Latest
- GB/T 5275.2-2022
- Scope
- This part of GB/T 5275 specifies the method of continuously generating a mixed gas for calibration with a positive displacement pump. This method uses a multi-piston positive displacement pump to prepare a mixed gas for calibration containing two or more components with pure gas or mixed gas. This kind of pump can be used to prepare a mixed gas whose volume fraction range of gas phase components in the equilibrium gas is above 0.1%. The relative expanded uncertainty U of the measurement is obtained by multiplying the relative composite uncertainty by the inclusion factor k=2, and its value No more than 0.5%. Multiple positive displacement pumps run in series to obtain a lower concentration of mixed gas. The lowest concentration that can be prepared by a series set of two positive displacement pumps is 10-5. Moreover, using premixed gas instead of pure gas to prepare mixed gas can also obtain lower concentration mixed gas. See Appendix A for the results and uncertainty calculations. The advantage of this method is that a large amount of mixed gas can be prepared continuously, and multi-component mixed gas can be prepared.
GB/T 5275.2-2014 Referenced Document
- GB/T 10628-2008 Gas analysis.Comparison methods for determining and checking the composition of calibration gas mixtures
- GB/T 5275.1-2014 Gas analysis.Preparation of calibration gas mixtures using dynamic volumetric methods.Part 1:Methods of calibration
GB/T 5275.2-2014 history
- 2022 GB/T 5275.2-2022 Gas analysis—Preparation of calibration gas mixtures using dynamic methods—Part 2: Piston pumps
- 2014 GB/T 5275.2-2014 Gas analysis.Preparation of calibration gas mixtures using dynamic volumetric methods.Part 2:Volumetric pumps
GB/T 5275.2-2014 -All Parts
GB/T 5275.1-2024 Gas analysis - Dynamic method for preparation of calibration gas mixtures - Part 1: General requirements
GB/T 5275.10-2009 Gas analysis.Preparation of calibration gas mixtures using dynamic volumetric methods.Part 10:Permeation method
GB/T 5275.11-2014 Gas analysis.Preparation of calibration gas mixtures using dynamic volumetric methods.Part 11:Electrochemical generation
GB/T 5275.2-2022 Gas analysis—Preparation of calibration gas mixtures using dynamic methods—Part 2: Piston pumps
GB/T 5275.4-2014 Gas analysis.Preparation of calibration gas mixtures using dynamic volumetric methods.Part 4:Continuous syringe injection method
GB/T 5275.5-2014 Gas analysis.Preparation of calibration gas mixtures using dynamic volumetric methods.Part 5:Capillary calibration devices
GB/T 5275.6-2023 Preparation of gas mixtures for calibration by dynamic method of gas analysis - Part 6: Critical flow orifice
GB/T 5275.7-2014 Gas analysis.Preparation of calibration gas mixtures using dynamic volumetric methods.Part 7:Thermal mass-flow controllers
GB/T 5275.8-2014 Gas analysis.Preparation of calibration gas mixtures using dynamic volumetric methods.Part 8:Diffusion method
GB/T 5275.9-2014 Gas analysis.Preparation of calibration gas mixtures using dynamic volumetric methods.Part 9:Saturation method