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Content archived on 2024-05-14

Improving the performance characteristics of peltron wheel flow meters

Objective



There are many types of liquid flow meters available for industrial measurement such as variable area (VA), ultrasonic electromagnetic and tracer (heat or particle) flow meters. However, meters, such as these, can be very expensive particularly non-intrusive remote types such as ultra sound flow meters), can be a safety hazard (e.g. glass VA meters) and can be restricted to small ranges of flow and very specific operating conditions (temperatures, pressures, viscosities, toxicity etc.). The Pehon wheel flow meter, on the other hand. has a high rangeability, it is small. relatively inexpensive. and can be constructed rom many materials (polymers. metals, ceramics etc.) so it can therefore be used in a range of corrosive and toxic. It can also be operated remotely, it is intrinsically safe and has a good speed of response. However, the associated pick-up coil and electronics are restricted to relatively small temperatures ranges (e.g. -30 to 135 degrees C). It would also be desirable to increase the maximum operating pressure (e.g. above 1000 bar) and it is also limited by the range of fluid viscosities with which it is able to measure. Litremeter Limited designs, specifies and manufactures Pelton wheel flow meters. It is the proposal of this project than using a detailed analysis of materials and electronics requirements and applying CFD modelling to gain an in-depth understanding of Pelton wheel fluid mechanics, it will be possible to greatly decrease the restrictions imposed by temperature and pressure and at the same time, increase the system's metrological performance. A summary of RTD objectives is given below: 1) To use CFD modelling to develop a less empirical understanding of Pelton wheel systems (i.e. clarify the inter-relationship of all perfomance and design variables and parameters) and hence increase the reproductibility, repeatability and accuracy of the flow meter. 2) Increase maximum operating average pressure and temperature to greater than 1000 Bar and 135 degrees C respectively 3) To increase the measurable range of fluid viscosity by decreasing current non-linearity problems 4) To develop the system to be more resistant to airbome noise. In order to achieve to achieve the above will require the application of state-of-the-art materials and electronics in conjunction with a CFD modelling phase which has. to date, never been applied to Pelton wheel flow meters. The project wiill require the co-operation of a number of research institutions and industrial specialists.

Call for proposal

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Coordinator

Litre Metre Ltd.
EU contribution
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Address
50/53,Rabans Close
HP19 3RS Aynesbury
United Kingdom

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Total cost
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