Meggitt Sensing Systems introduces microprocessor-based vibration amplifier for jet engine, aircraft APU measurements

SAN JUAN CAPISTRANO, Calif., 15 Nov. 2012. Meggitt Sensing Systems, a Meggitt group division, has applied the Endevco 6634C vibration amplifier to meet the demands of jet engine testing and aircraft auxiliary power unit vibration measurements.

The Endevco 6634C microprocessor-based vibration amplifier is designed to condition and display rotating machinery data while offering simultaneous outputs as broadband, acceleration, velocity, and displacement. The Endevco 6634C is designed to accept inputs from a single-ended, differential piezoelectric or ISOTRON (IEPE) accelerometer, velocity coil, or remote charge converter.

Full-scale AC and DC output ranges, as well as sensitivity, are user programmable in selectable engineering units and are representative of acceleration, velocity, or displacement. Programming is accomplished from the front-panel keyboard or optional RS-232 computer interface. Units have an optional six-pole filter, which may be programmed from the front panel. Up to 10 setups can be stored and recalled from the non-volatile memory, while two TTL- compatible latched alarm outputs provide warning and alert functions. An optional, 19-inch mounting rack, also available from Meggitt Sensing Systems, can accommodate up to six units.

Able to accept and condition multiple transducer output types, the Endevco 6634C vibration amplifier is well suited for the turbine and generator health monitoring of jet engines, generators, turbines, and pumps. They are also well suited for aerospace engine test cell applications which incorporate the use of high-temperature accelerometers, or where vibration data is required to be expressed in terms of velocity. These rugged units can be used with other balanced differential output devices. Additional applications include fixed and mobile test cells for small turbofans, air cyclers, and in-laboratory test rigs.