Abstract: A method of detecting corrosion in a conduit or container comprises measuring the thickness of a wall of the conduit or container with one or more pulse-echo ultrasound devices, wherein the method comprises the following steps: (i) receiving signals indicative of A-scan data from the one or more pulse-echo ultrasound devices, wherein the A-scan data comprises a plurality of A-scan spectra; (ii) determining which of the A-scan spectra have a distorted waveform such that a reliable wall thickness measurement cannot be determined; (iii) analysing the A-scan spectra identified in step (ii) as having a distorted waveform to determine one or more A-scan spectral characteristics of each spectrum that are causing the distortion; (iv) resolving the waveform characteristics based on the determined spectral characteristics causing the waveform distortion so as to produce modified A-scan spectra; (v) determining thickness measurements of the wall based on the modified A-scan spectra; and (vi) determining the extent to wh

Abstract: A method of detecting corrosion in a conduit or container comprises measuring the thickness of a wall of the conduit or container with one or more pulse-echo ultrasound devices, wherein the method comprises the following steps: (i) receiving signals indicative of A-scan data from the one or more pulse-echo ultrasound devices, wherein the A-scan data comprises a plurality of A-scan spectra; (ii) determining which of the A-scan spectra have a distorted waveform such that a reliable wall thickness measurement cannot be determined; (iii) analysing the A-scan spectra identified in step (ii) as having a distorted waveform to determine one or more A-scan spectral characteristics of each spectrum that are causing the distortion; (iv) resolving the waveform characteristics based on the determined spectral characteristics causing the waveform distortion so as to produce modified A-scan spectra; (v) determining thickness measurements of the wall based on the modified A-scan spectra; and (vi) determining the extent to wh

Abstract: A method for controlling a process stream comprises detecting interfaces that are present in the process stream under a set of conditions using a phased array ultrasound probe, reconstructing an image of the interfaces, and providing the image, or information derived therefrom, to a control system. The control system either modifies or maintains the set of conditions in process stream. The method may be used for controlling an industrial process stream, such as a process stream in a chemical or petrochemical processing plant.

Abstract: A venturi-based vacuum system that provides a compensated vacuum supply to a vacuum utilization device. The system creates a vacuum by means of a source gas passing through a standard venturi with a flow control valve controlling the flow of that source gas and thus, the level of vacuum produced. A feedback system is provided that makes the vacuum system self-compensating. The feedback system senses the level of vacuum in a vacuum supply outlet to the vacuum utilization device and uses that sensed level to control the setting of the flow control valve. As such, changes in flow in the vacuum utilization device that result in changes in the vacuum level from the vacuum system are compensated for by a corresponding change in the setting of the flow control valve to maintain the vacuum level at a constant level.