Abstract: A vibration transducer (22) is mounted to a rotating machine (20) for sensing vibration thereof. An output electrical signal from the vibration transducer is analyzed to generate a level display (18) of vibrational displacement per unit time, a speed display (22) indicative of rotational speed, and a bearing condition display (20) indicative of bearing condition, all displays derived directly from the vibration transducer signal. The electrical signal is transformed (36) into a frequency spectrum that has an amplitude for each of a plurality of narrow frequency ranges or bins. Each frequency bin has a characteristic center frequency and a predefined width or band of frequencies. A speed analysis program (38) identifies a set of at least first, second and third order related frequency bins, i.e. frequency bins whose center frequencies are an even multiple of each other, that have a significantly high amplitude and provides the lowest bin center frequency as a control signal to the speed display.

Abstract: A vibration transducer (22) is mounted to a rotating machine (20) for sensing vibration thereof. An output electrical signal from the vibration transducer is analyzed to generate a level display (18) of vibrational displacement per unit time, a speed display (22) indicative of rotational speed, and a bearing condition display (20) indicative of bearing condition, all displays derived directly from the vibration transducer signal. The electrical signal is transformed (36) into a frequency spectrum that has an amplitude for each of a plurality of narrow frequency ranges or bins. Each frequency bin has a characteristic center frequency and a predefined width or band of frequencies. A speed analysis program (38) identifies a set of at least first, second and third order related frequency bins, i.e. frequency bins whose center frequencies are an even multiple of each other, that have a significantly high amplitude and provides the lowest bin center frequency as a control signal to the speed display.

Abstract: A lightweight, snap together filter is provided for use under high stress environmental conditions. The casing and cover of the filter may be molded from high strength plastics and has been designed to snap together by a snap lock mechanism to secure a subtantially pressure tight filter assembly. The filter assembly may be utilized in an aircraft and other vehicles that may be exposed to extreme environmental conditions. The filter is designed to withstand a wide range of temperatures.

Abstract: A continuous and valveless sorber device is described which utilizes a novel rotating sorption bed which operates through at least three zones (sorption, desorption and cooling). The rotating sorption bed is contained within a plurality of manifolds and the sorption bed and the manifolds are sealed to one another via sealing means. Contaminated fluid is directed through the sorption zone of the rotating sorption bed where the contaminants are removed by sorbents. The bulk of the fluid which is then cleaned is available for use. A portion of the clean fluid (regeneration fluid) is used to cool the sorbent in the cooling zone of the rotating sorption bed. The warmed regeneration fluid is then heated by a regeneration heater and is subsequently directed into the desorption zone of the rotating sorption bed where the hot clean regeneration fluid is used to desorb and carry away the contaminants from the sorbent.