XM-120 Standard Dynamic Measurement Module

The XM® 120 Standard Dynamic Measurement modules are general-purpose monitors. They are suited for monitoring shaft, casing, or pedestal vibration in rotating equipment that have operating speeds greater than 700 RPM.


  • Two channels connect common vibration sensors (e.g., eddy current probes, accelerometers) and any sensor that outputs a voltage signal
  • One tachometer channel that accepts input from most speed measurement sensors and can measure speeds 1…1.2M RPM with pulse rates 1…50,000 events per revolution
  • Signal processing provides synchronous or asynchronous measurements
  • Signal processing provides two levels of integration and FFT processing with as many as 30 measured parameters
  • Two isolated, 4…20 mA outputs
  • Single on-board relay
  • Four virtual relays or four additional relays (when connected to an XM® 441 Expansion Relay Module)