Applications& 65306; Used for measuring periodic motion, to check the imbalance and deflecting of moving machinery. Specifically designed for present measuring various mechanical vibration. So as to provide the data for the quality control, run time and equipment upkeep. * VM-6380-2 can not only show 2 same parameters in one display for 2 position measurement, but also can show 3 different parameters of velocity, acceleration and displacement in 1 display. * VM-6380-3 can not only show 3 same parameters in one display for 3 position measurement, but also can show 3 different parameters of velocity, acceleration and displacement in 1 display. Features: * Uses piezoelectric acceleration transducer to convert vibration signal. * In accordance with ISO 2954,GB13823.3, used for periodic measurements, to detect out-of-balance,misalignment and other mechanical faults in rotating machines. * Specially designed for easy on site vibration measurement of all rotating machinery for quality control, commissioning, and predictive maintenance purposes. * 3 accelerators for 3-channel vibration measurement. * 3 same parameters in one display for 3 position measurement or 1 positionmeasurement specified, showing 3 different parameters of velocity, acceleration and displacement in 1 display. * Bearing condition monitoring function. * LCD digital display with back light. * Lightweight and easy to use. * Wide frequency range (10Hz.~10kHz.) * Automatic power shut off to conserve power. * AC output socket for headphones and recording. * Optional headphones for use as electronic stethoscope. * Optional software and cable for RS232C. Specifications:       Sensor    3 Piezoelectric Transducers        Measuring Range    Acceleration    0.1~400m/s² 0.3~1312ft/s² 0.0~40g Equivalent Peak        Velocity    0.01~400mm/s 0.004~16.0inch/sTrue RMS        Displacement    0.001~4.0 mm 0.04~160.0 mil Equivalent Peak-peak        Frequency Range    Acceleration    10Hz~10kHz        Velocity    10Hz~1kHz        Displacement    10Hz~1kHz        Accuracy    5% of Reading+2 digits        Operating Conditions    Temperature    0~50ºC        Humidity    <90%RH        Power Supply    4x1.