Specifies a method for the determination of water flow, in a conduit running full, by measurement of the volume of water delivered into a volumetric tank in a known time interval. The application is generally for fixed laboratory installations with flow rates of less than 1500 kL/s. It is identical with and has been reproduced from ISO 8316:1987.
Table of contents
Header
About this publication
Preface
1 Scope and field of application
2 References
3 Symbols and definitions
3.1 Symbols (see alsoISO 4006)
3.2 Definitions
4 Principle
4.1 Statement of the principle
4.1.1 Static gauging method
4.1.2 Dynamic gauging method
4.1.3 Comparison of instantaneous and mean flow-rates
4.2 Accuracy of the method
4.2.1 Overall uncertainty in the volumetric measurement
4.2.2 Requirements for accurate measurements
5 Apparatus
5.1 Diverter
5.2 Time measuring apparatus
5.3 Volumetric tank
5.4 Level measuring apparatus
5.5 Calibration of the volumetric tank
6 Procedure
6.1 Static gauging method
6.2 Dynamic gauging method
6.3 Twin tanks method
6.4 Common provisions
7 Calculation of flow-rate
7.1 Calculation of volume flow-rate
7.2 Calculation of mass flow-rate
8 Calculation of the overall uncertainty in the flow-rate measurement
8.1 Sources of errors
8.1.1 Systematic errors
8.1.1.1 Errors due to the volumetric tank
8.1.1.2 Errors due to the level gauge
8.1.1.3 Errors due to the timing device
8.1.1.4 Errors due to the diverter system
8.1.1.5 Errors due to density measurement
8.1.1.6 Maximum permissible value
8.1.2 Random errors
8.1.2.1 Errors in the determination of the volume collected
8.1.2.2 Errors due to the diverter system
8.1.2.3 Errors due to dynamic gauging
8.2 Calculation of the overall uncertainty in flow-rate measurement
