IMI Industrial Vibration Sensors Katalog Seite 44

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MEMS DC Response Energy Power Generation Series 3711 singe axis 3713 triaxial and 3741 single axis MEMS DC response accelerometers are designed to measure low frequency vibration and motion and are offered in full scale ranges from 2 to 200 g to accommodate a variety of testing requirements The units feature gas damped silicon MEMS sensing elements for uniform repeatable performance and offer high frequency overload protection Electrically the units offer a single ended or differential output signal with power signal and ground leads for each channel Supply voltage regulation permits operation from 6 to 30 VDC and the low noise low impedance output signal may be transmitted over long cable lengths without degradation Single axis MEMS DC Accelerometer Series 3711 n Hermetically sealed n Robust titanium housing n Single ended output Visit www pcb com for more information Triaxial MEMS DC Accelerometer Series 3713 n Hermetically sealed n Robust titanium housing n Single ended output Visit www pcb com for more information Single axis MEMS DC Accelerometer Series 3741 n Low profile and low mass n Anodized aluminum housing n Differential output Visit www pcb com for more information visit us online at www imi sensors com 1 716 684 0003 41 Wind Turbine Assessment Microphones Preamplifiers Energy Power Generation Microphones are used to measure the noise from the wind turbine both internally and externally The gearbox and the main bearing are typical noise sources which should be measured internally while the overall turbine noise is monitored externally Larson Davis a division of PCB Piezotronics manufacturers various Sound Level Meters and Microphones which can be used to make these different types of acoustic measurements By utilizing a narrowband FFT analysis higher frequency components can be analyzed to predict possible machine faults An analysis of the source of the audible noise can result in gearbox modifications so that the equipment runs quietly and efficiently In addition the low frequency content of blade generated noise can be quantified using octave analysis n High temperature 120 C preamplifier for prepolarized microphones n Type 1 compliant modern prepolarized 0 V and externally polarized 200 V microphones n Value oriented array microphones n TEDS compliant with IEEE standards Visit www pcb com acoustics for more information