Abstract: The invention relates to an adaptor for mounting a pressure sensor for a high temperature system comprising a sensor carrier means with an axis of elongation, said carrier means being provided at one axial end thereof with mounting means for sealingly mounting said carrier means in a hole of the wall, with an end face of said carrier means within said borescope hole being provided with an opening for entrance of pressure fluid from the interior of the gas tubine wall into said carrier means, said carrier means further being provided at the other axial end thereof with a recess for sealingly receiving the pressure sensor.

Abstract: A process and a computer implemented system for controlling an axial compressor through measurement of pressure fluctuations of the turbulent fluid layer in the region of the compressor housing in at least one stage of the compressor by means of at least one pressure sensing device sensitive to differential pressure fluctuations affecting the blades at the characteristic frequency of the stage. The process and computer implemented system use a characteristic peak which emerges under load in a smoothed frequency signal derived from a transform of the pressure measurement to achieve optimal efficiency while, at the same time, avoiding destructive surge and stall conditions in the compressor.

Abstract: A process and a computer implemented system for monitoring vibration in the blades of the rotor and stator of an axial compressor through measurement of pressure fluctuations of the dynamic pressure field in the region of the compressor housing in at least one stage of the compressor by means of at least one pressure sensing device sensitive to differential pressure fluctations affecting the blades at the characteristic frequency of the stage. The process and computer implemented system also assist in the control of the compressor by forwarding a status respecting rotor and stator mechanical vibration to the control unit.

Abstract: A process and device for detecting fouling of an axial compressor by measuring of pressure fluctuations within at least one of the stages of said compressor in the region of the compressor housing by means of at least one pressure sensing device, deriving a frequency signal from the signals delivered from said pressure sensing device, checking whether each of said frequency signals comprises at least one characteristic peak in the region of a characteristic frequency assigned to one of said compressor stages, and deriving a fouling parameter from said frequency signal, which parameter depends on a peak parameter indicative of the form of said characteristic peak and indicating the status of fouling of the compressor.