Abstract: An electrical capacitance tomography (ECT) system for determining, in use, a distribution of a fluid in a vessel is described which comprises a plurality of electrodes disposed in or about the vessel; and a processor operably coupled to the electrodes and being configured to determine from outputs therefrom, by an ECT method, the distribution of fluid in the vessel wherein at least some of the plurality of electrodes are mesh electrodes. Aspects of the invention provide such an apparatus and methods of carrying out tomography including such electrodes and methods of constructing a system. The electrodes are more robust and lighter than electrodes previously used enabling the use in space applications.

Abstract: In order to measure a fluid flow or flow conditions of a fluid flow through an apparatus, electrodes are provided across which capacitance values are determined. The capacitances are used in conjunction with a predetermined model to determine a revised model for the system. If the modelled to be satisfactory, then the values representative of the flow conditions are output. If it is not, then the model is tuned to reduce the error. A novel arrangement of electrodes is also provided along with apparatus embodying the method. The invention also provides a way of determining fluid properties, for example, density, volume present contained within a vessel or tank whether flowing or stationary.

Abstract: In order to measure a fluid flow or flow conditions of a fluid flow through an apparatus, electrodes are provided across which capacitance values are determined. The capacitances are used in conjunction with a predetermined model to determine a revised model for the system. If the modelled to be satisfactory, then the values representative of the flow conditions are output. If it is not, then the model is tuned to reduce the error. A novel arrangement of electrodes is also provided along with apparatus embodying the method. The invention also provides a way of determining fluid properties, for example, density, volume present contained within a vessel or tank whether flowing or stationary.

Abstract: In order to measure a fluid flow or flow conditions of a fluid flow through an apparatus, electrodes are provided across which capacitance values are determined. The capacitances are used in conjunction with a predetermined model to determine a revised model for the system. If the modelled to be satisfactory, then the values representative of the flow conditions are output. If it is not, then the model is tuned to reduce the error. A novel arrangement of electrodes is also provided along with apparatus embodying the method. The invention also provides a way of determining fluid properties, for example, density, volume present contained within a vessel or tank whether flowing or stationary.

Abstract: In order to measure a fluid flow or flow conditions of a fluid flow through an apparatus, electrodes are provided across which capacitance values are determined. The capacitances are used in conjunction with a predetermined model to determine a revised model for the system. If the modelled to be satisfactory, then the values representative of the flow conditions are output. If it is not, then the model is tuned to reduce the error. A novel arrangement of electrodes is also provided along with apparatus embodying the method. The invention also provides a way of determining fluid properties, for example, density, volume present contained within a vessel or tank whether flowing or stationary.