ISO 17089-2:2012

Measurement of fluid flow in closed conduits - Ultrasonic meters for gas — Part 2: Meters for industrial applications

This part of ISO 17089 specifies requirements and recommendations for ultrasonic gas meters (USMs), which utilize acoustic signals to measure the flow in the gaseous phase in closed conduits. This part of ISO 17089 is applicable to transit time USMs and is focused towards industrial flow measurement. Included are meters comprising meter bodies as well as meters with field-mounted transducers. There are no limits on the size of the meter. It can be applied to the measurement of almost any type of gas; such as but not limited to air, hydrocarbon gases, and steam. This part of ISO 17089 specifies performance, calibration (when required), and output characteristics of USMs for gas flow measurement and deals with installation conditions. NOTE It is possible that national or other regulations apply which can be more stringent than those in this part of ISO 17089.

Mesurage de débit des fluides dans les conduites fermées — Compteurs à ultrasons pour gaz — Partie 2: Compteurs pour applications industrielles

General Information

• Status: Published
• Publication Date: 23-Sep-2012
• ICS: 17.120.10 - Flow in closed conduits
• Technical Committee: ISO/TC 30/SC 5 - Velocity and mass methods
• Drafting Committee: ISO/TC 30/SC 5 - Velocity and mass methods
• Current Stage: 9092 - International Standard to be revised
• Completion Date: 22-Jan-2024

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 17089-2
First edition
2012-10-01
Measurement of fluid flow in closed
conduits — Ultrasonic meters for gas —
Part 2:
Meters for industrial applications
Mesurage de débit des fluides dans les conduites fermées —
Compteurs à ultrasons pour gaz —
Partie 2: Compteurs pour applications industrielles
Reference number
ISO 17089-2:2012(E)
©
ISO 2012

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ISO 17089-2:2012(E)
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ii © ISO 2012 – All rights reserved

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ISO 17089-2:2012(E)
Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, and symbols . 1
3.1 Terms and definitions . 1
3.2 Symbols and subscripts . 6
3.3 Abbreviations . 7
4 Principles of measurement . 7
4.1 Transit time ultrasonic meters . 7
4.2 Flare or vent gas meters . 8
4.3 Factors affecting performance . 9
4.4 Description of generic types . 9
4.5 Impact of pressure and temperature on the flowmeter geometry .14
4.6 USM measurement uncertainty determination .14
4.7 USM classification .14
5 Meter characteristics .15
5.1 Performance indications .15
5.2 Operating conditions .15
5.3 Meter body, materials, and construction .15
5.4 Connections .16
5.5 Dimensions .16
5.6 Ultrasonic ports .16
5.7 Pressure tapping .
...