The 3500/40M Proximitor Monitor is a 4-channel monitor that accepts input from
Bently Nevada proximity transducers, conditions the signal to provide various
vibration and position measurements, and compares the conditioned signals
with user-programmable alarms. The user can program each channel of the
3500/40M with the 3500 Rack Configuration Software to perform any of the
following functions:
 Radial Vibration
 Thrust Position
 Differential Expansion
 Eccentricity

Sensitivity
Radial Vibration
Thrust
Eccentricity
Differential
Expansion
REBAM
3.94 mV/µm (100 mV/mil) or
7.87 mV/µm (200 mV/mil).
3.94 mV/µm (100 mV/mil) or
7.87 mV/µm (200 mV/mil).
3.94 mV/µm (100 mV/mil) or
7.87 mV/µm (200 mV/mil).
0.394 mV/µm (10 mV/mil) or
0.787 mV/µm (20 mV/mil).
40 mV/µm (1000 mV/mil) or
80 mV/µm (2000 mV/mil).

Direct and Gap
Within ±0.33% of full-scale
typical, ±1% maximum.
1X and 2X
Within ±0.33% of full-scale
typical, ±1% maximum.
Smax
Within ±5% maximum.
ot 1X
±3% for machine speeds less
than 30,000 cpm.
±8.5% for machine speeds
greater than 30,000 cpm.

Rack configuration software: Allows users to program each channel to implement features such as radial vibration, thrust position, differential spread, eccentricity, and REBAM.

Listening channels: 4 channels, configured in pairs for dual-function operations (e.g., channels 1-2 for one function and channels 3-4 for another).

Signal processing: The input signal is adjusted to a static value with user-defined alarm and hazard setpoints.

Alarm monitoring: The monitored parameters are constantly compared to predefined set values, and an alert is triggered for any parameter that is out of range.

Purpose: To provide mechanical protection by comparing monitoring parameters to predefined alarm setpoints, providing critical operational data to maintenance personnel.