Ultrasonic Gas Meter: Minimization of Sensivity to Transported Dust and Gas Property Variation

Projektinformationen

ID Finanzhilfevereinbarung: MAT1940024

Startdatum 1 Oktober 1994

Enddatum 30 September 1997

Finanziert unter

• Specific research and technological development programme (EEC) in the field of measurements and testing, 1990-1994

Gesamtkosten € 0,00

EU-Beitrag Keine Daten

Koordiniert durch

Siemens AG
Germany

Ziel

Ultrasonic gasmeter for domestic purposes are already available. For these kind of instruments the repeatability and accuracy of the flowmeter output are dependent on the fluid properties, the production tolerances and the choice of materials. A significant influence on the measurement arises from dust which affects the transducers, the reflection and distribution of the ultrasound, and the gas flow in the tube. Presently a filter is used to minimize these effects, but the additional pressure drop is undesirable.

The aim of this project is to overcome these difficulties and to improve ultrasonic gas flow meters in generic form. To this end, physical and computational modelling is being undertaken to study (i) the propagation of sound through a moving medium, (ii) the sensitivity of flow measurements to dust transport and dust deposition in the measuring tube and (iii) the sensitivity of flow measurements to gas properties. These theoretical investigations will help to design and construct some ultrasonic flow meter prototypes with different geometries. These meters will then be subjected to extensive laboratory tests (calibration, measurement of the dependence for different gases, measurements at different dust concentrations, determination of velocity profiles, etc.). The final instruments are intended to work without filters, showing the same reliability and precision of existing domestic gas meters. These new meters shall fulfill the OIML-specifications.

Wissenschaftliches Gebiet

• natural sciences › mathematics › pure mathematics › geometry
• natural sciences › physical sciences › acoustics › ultrasound

Programm/Programme

• FP3-MAT - Specific research and technological development programme (EEC) in the field of measurements and testing, 1990-1994

Thema/Themen

Data not available

Aufforderung zur Vorschlagseinreichung

Data not available

Finanzierungsplan

CSC - Cost-sharing contracts

Koordinator

Siemens AG

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• Adresse: 8000 München ; Deutschland
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Beteiligte (4)

BG PLC

Vereinigtes Königreich

• EU-Beitrag: Keine Daten
• Adresse: Ashby Road ; LE11 3GR Loughborough - Leicestershire
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Cranfield University

Vereinigtes Königreich

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• Adresse: Silsoe Campus Wharley End ; MK45 4DT Cranfield
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INSTITUTO SUPERIOR TECNICO

Portugal

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• Adresse: 1,Avenida Rovisco Pais 1 ; 1049-001 LISBOA
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UNIVERSITY OF ERLANGEN-NUREMBERG

Deutschland

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• Adresse: Egerlandstrasse 1 ; 91058 ERLANGEN
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