Select options for pricing
  • Call for availability



  • Accepts 1 to 4 signals
  • Front panel LEDs: OK, TX/RX, Bypass
  • Power consumption: 7.7 watts, typical
  • Multimode positive input I/O 50 kΩ
  • Approvals available:
    • CSA / NRTL / C (Class 1, Division 2)
    • ATEX / IECEx / CSA (Class 1, Zone 2)


The Bently Nevada 3500/46M Hydro Monitor is a four-channel instrument that accepts input from proximity, seismic and air gap sensors. The monitor conditions the signal to provide vibration as well as position measurements and compares the conditioned signals with user-programmable alarms. Hydro Radial Vibration channels combine the shaft gap movement with the NX amplitude to provide a measurement to alarm on shear-pin failure.