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BS ISO 24062:2023 2024

BS ISO 24062:2023 2024

$167.15

Measurement of fluid flow in closed conduits. Clamp-on ultrasonic transit-time meters for liquids and gases

Published By Publication Date Number of Pages
BSI 2024 44
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PDF Catalog

PDF Pages PDF Title
2 undefined
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
3.1 Quantities
10 3.2 Meter design
3.3 Thermodynamic conditions
11 3.4 Statistics
12 3.5 Calibration
3.6 Symbols and subscripts
13 4 Principle of measurement
4.1 General
14 4.2 Generic description
15 4.2.1 Transducers
16 4.2.2 Ultrasonic path configurations
17 4.2.3 Electronic unit functionality
18 4.3 Special considerations
4.3.1 Gas
4.3.2 Extreme temperatures
4.4 Additional measurements
4.4.1 Standard volume flow
19 4.4.2 Heat flow
4.4.3 Mass flow
5 Test and calibration
5.1 General
5.2 Individual testing — Flow calibration under flowing conditions
5.2.1 General
20 5.2.2 Laboratory flow calibration
21 6 Installation
6.1 General
6.2 Installation location
6.2.1 Upstream and downstream straight pipe length requirements and path configuration
22 6.3 Transmitter programming
6.4 Pressure and temperature inputs
23 6.5 Transducer installation
6.5.1 Transducer type
6.5.2 Transducer orientation
6.5.3 Coupling
6.5.4 Transducer mounting
25 6.6 Gas considerations
6.7 Cable
26 6.8 Additional installation effects
6.8.1 Non-steady flow
6.8.2 Contamination by secondary phase
6.8.3 Vibration
6.8.4 Thermal insulation
27 6.8.5 Stratification
6.8.6 Wall roughness signal considerations
6.8.7 Non-Newtonian fluids
6.9 Operational diagnostics
6.9.1 Fluid speed of sound
28 6.9.2 Gain
6.9.3 Signal to noise ratio
7 Maintenance
8 Uncertainty in measurement
8.1 General
29 8.2 Mathematical model
30 8.3 Evaluation of the contributory variances
8.3.1 Uncertainty of the cross-sectional area, u(A)
31 8.3.2 Uncertainty in the velocity profile, u(Kp)
32 8.3.3 Uncertainty of the path-geometry factor, u(Kg) and time measurement
8.3.4 Uncertainty of time measurement
8.3.5 Uncertainty of the delay time, u(t0)
8.3.6 Effect of multiple paths
33 8.4 Additional effects on measurement uncertainty
8.4.1 Effect of pipe material on sound speed
8.4.2 Effect of fluid sound speed
8.4.3 Reproducibility of transmitter mounting
8.4.4 External influences
34 Annex A (informative) Example of uncertainty calculation
41 Bibliography

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BS ISO 24062:2023 2024
$167.15