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AS ISO 5167.3:2023
$175.82
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full, Part 3: Nozzles and Venturi nozzles
AS ISO 5167.3:202X identically adopts ISO 5167 3:2022, which specifies the geometry and method of use (installation and operating conditions) of nozzles and Venturi nozzles when they are inserted in a conduit running full to determine the flowrate of the fluid flowing in the conduit
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Terms and definitions
4 Principles of the method of measurement and computation
5 Nozzles and Venturi nozzles
5.1 ISA 1932 nozzle
5.1.1 General shape
5.1.2 Nozzle profile
5.1.2.1
5.1.2.2
5.1.2.3
5.1.2.4
5.1.2.5
5.1.2.6
5.1.2.7
5.1.2.8
5.1.2.9
5.1.3 Downstream face
5.1.3.1
5.1.3.2
5.1.4 Material and manufacture
5.1.5 Pressure tappings
5.1.5.1
5.1.5.2
5.1.6 Coefficients of ISA 1932 nozzles
5.1.6.1 Limits of use
5.1.6.2 Discharge coefficient, C
5.1.6.3 Expansibility [expansion] factor, ε
5.1.7 Uncertainties
5.1.7.1 Uncertainty of discharge coefficient, C
5.1.7.2 Uncertainty of expansibility [expansion] factor ε
5.1.8 Pressure loss, Δϖ
5.2 Long radius nozzles
5.2.1 General
5.2.2 Profile of high-ratio nozzle
5.2.2.1
5.2.2.2
5.2.2.3
5.2.2.4
5.2.2.5
5.2.2.6
5.2.2.7
5.2.3 Profile of low-ratio nozzle
5.2.3.1
5.2.3.2
5.2.4 Material and manufacture
5.2.5 Pressure tappings
5.2.5.1
5.2.5.2
5.2.6 Coefficients of long radius nozzles
5.2.6.1 Limits of use
5.2.6.2 Discharge coefficient, C
5.2.6.3 Expansibility [expansion] factor, ε
5.2.7 Uncertainties
5.2.7.1 Uncertainty of discharge coefficient C
5.2.7.2 Uncertainty of expansibility [expansion] factor ε
5.2.8 Pressure loss, Δϖ
5.3 Throat-tapped nozzles
5.3.1 General
5.3.2 Profile of throat-tapped nozzle
5.3.2.1
5.3.2.2
5.3.2.3
5.3.2.4
5.3.2.5
5.3.2.6
5.3.3 Material and manufacturing
5.3.4 Pressure tappings
5.3.4.1 Angular position of the pressure tappings
5.3.4.2 Circularity and edge of pressure tappings
5.3.4.3 Upstream tapping
5.3.4.4 Throat tapping
5.3.5 Coefficients
5.3.5.1 Limits of use
5.3.5.2 Discharge coefficient, C
5.3.5.3 Expansibility [expansion] factor, ε
5.3.6 Uncertainties
5.3.6.1 Uncertainty of discharge coefficient C
5.3.6.2 Uncertainty of expansibility [expansion] factor ε
5.3.7 Calibration and extrapolation
5.3.8 Pressure Loss
5.4 Venturi nozzles
5.4.1 General shape
5.4.1.1
5.4.1.2
5.4.1.3
5.4.1.4
5.4.1.5
5.4.1.6
5.4.1.7
5.4.1.8
5.4.1.9
5.4.2 Material and manufacture
5.4.2.1
5.4.2.2
5.4.3 Pressure tappings
5.4.3.1 Angular position of the pressure tappings
5.4.3.2 Upstream pressure tappings
5.4.3.3 Throat pressure tappings
5.4.4 Coefficients
5.4.4.1 Limits of use
5.4.4.2 Discharge coefficient, C
5.4.4.3 Expansibility [expansion] factor, ε
5.4.5 Uncertainties
5.4.5.1 Uncertainty of discharge coefficient C
5.4.5.2 Uncertainty of expansibility [expansion] factor ε
5.4.6 Pressure loss
6 Installation requirements
6.1 General
6.2 Minimum upstream and downstream straight lengths for installation between various fittings and the primary device
