GE Bently Nevada 3500/64M 169459-01 Multimode Prox/Velom I/O Module with Internal Terminations

3500/46M Hydro Monitor

The Bently Nevada™ 3500/46M Hydro Monitor is a four
channel instrument that accepts input from proximity, 
seismic, dynamic pressure and air gap sensors. The monitor 
conditions the signal to provide vibration, position and both 
static and dynamic pressure measurements. It then 
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.
 Using the 3500 Rack Configuration Software, you can 
configure the 3500/46M Hydro Monitor to perform the 
following functions:
 l Hydro Radial Vibration
 l Hydro Air Gap
 l Hydro Velocity
 l Hydro Acceleration
 l Hydro Thrust
 l Multimode Hydro RV
 l Multimode Air Gap
 l Multimode Hydro Velocity
 l Multimode Thrust
 l Multimode Acceleration
 l Multimode Hydro Dynamic Pressure
 l Hydro Stator End Winding (SEW)

Specifications
 Inputs
 Signal
 Accepts 1 to 4 proximity, air 
gap, velocity or acceleration 
sensor signals
 Power 
consumption 7.7 watts, typical
 Multimode 
positive input 
I/O
 50 kΩ
 Input Impedance
 Prox/Velom 
I/O and
 Multimode 
Prox/Velom 
I/O
 10 kΩ for Prox/Accel
 3.5 MΩ for Velomitor
 Sensitivity
 Hydro Radial 
Vibration and 
Multimode 
Hydro RV
 0.79 mV/μm (20 mV/mil),
 3.94 mV/μm (100 mV/mil) or
 7.87 mV/μm (200 mV/mil)
 Hydro Air Gap 
and 
Multimode Air 
Gap
 0.20 mV/μm (5 mV/mil),
 0.22 mV/μm (5.6 mV/mil),
 0.49 mV/μm (12.5 mV/mil) or
 0.55 mV/μm (14 mV/mil)
 Hydro 
Velocity and 
Multimode 
Hydro 
Velocity
 20 mV/mm/s (508 mV/in/s)
 Hydro Thrust 
and 
Multimode 
Thrust
 3.94 mV/μm (100 mV/mil),
 7.87 mV/μm (200 mV/mil) or
 11.22 mV/μm (285 mV/mil)
 Hydro 
Acceleration 
and 
Multimode 
Acceleration
 1.02 mV/m/s2 (10 mV/g) or
 2.55 mV/m/s2 (25 mV/g)
 Hydro SEW 10.19 mV/m/s2 (100 mV/g)
 Multimode 
Hydro 
Dynamic 
Pressure
 Refer to the Bently Nevada 
350300 Dynamic Pressure 
Sensor datasheet, document 
110M4613
 Outputs
 Front Panel LEDs
 OK LED
 Indicates when the 3500/46M 
Hydro Monitoris operating 
properly
 TX/RX LED
 Indicates when the 3500/46M 
Hydro Monitor is 
communicating with other 
modules in the 3500 Rack.
 Bypass LED
 Indicates when the 3500/46M 
Hydro Monitor is in Bypass 
Mode.
 Buffered 
Transducer 
Outputs
 The front of each monitor has 
one coaxial connector for 
each channel.
 Each connector is short-circuit 
protected.
 Output 
Impedance 550 Ω

Spares
 176449-06 3500/46M Hydro Monitor
 144403-01 3500/46M Hydro Monitor User 
Guide
 140471-01 Prox/Velom I/O Module with 
Internal Terminations
 140482-01 Prox/Velom I/O Module with 
External Terminations
 169459-01
 Multimode Prox/Velom I/O 
Module with Internal 
Terminations
 169459-02
 Multimode Prox/Velom I/O 
Module with External 
Terminations
 169715-01
 Multimode Positive Input I/O 
Module with Internal 
Terminations
 169715-02
 Multimode Positive Input I/O 
Module with External 
Terminations
 00561941
 Prox/Velom and Multimode 
Prox/Velom I/O Module ten-pin 
connector shunt
 00580434
 Euro Style connector header
 8 pin
 For use on I/O modules with 
internal terminations
 00580432
 Euro Style connector header
 10 pin
 For use on I/O modules with 
internal terminations
 166M2389
 Connector header
 Push-in-spring type 
(Alternative for PN 00580434)
 166M2388
 Connector header
 Push-in-spring type