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The MPC4 machinery protection card is the central element in the series machineryprotection system (MPS). This very versatile card is capable of measuring and monitoring up to four dynamic signal inputs and up to two speed inputs simultaneously.
The dynamic signal inputs are fully programmable and can accept signals representing acceleration, velocity and displacement (proximity), among others. On-board multi-
channel processing allows measurement of various physical parameters, including relative and absolute vibration, S max , eccentricity, thrust position, absolute and differential housing
expansion, displacement and dynamic pressure.
Digital processing includes digital filtering, integration or differentiation (if required),
rectification (RMS, mean value, true peak or true peak-to-peak), order tracking (amplitude and phase) and measurement of the sensor-target gap. The speed (tachometer) inputs accept signals
from a variety of speed sensors, including systems based on proximity probes, magnetic pulse pick-up sensors or TTL signals. Fractional tachometer ratios are also supported.