DescriptionThe 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:
Hydro Radial Vibration
Hydro Air Gap
Hydro Velocity
Hydro Acceleration
Hydro Thrust
Multimode Hydro RV
Multimode Air Gap
Multimode Hydro Velocity l Multimode Thrust
Multimode Acceleration
Multimode Hydro Dynamic Pressure
Hydro Stator End Winding (SEW)
The monitor channels are programmed in pairs. Each channel may have separate or identical configurations.
The primary purpose of the 3500/46M Hydro Monitor is to provide the following:
Machinery protection by continuously comparing monitored parameters against configured alarm setpoints to drive alarms
Essential machine information for operations and maintenance personnel
Hydro Velocity channels provide early warning of pending machinery problems and assist in diagnosing them. Due to the nature of high-amplitude, low-frequency velocity events, the Hydro Velocity channel type cannot be used for automated machinery protection.
Each channel, depending on configuration, typically conditions its input signal to generate various parameters called static values. You can configure alert setpoints for each active static value and danger setpoints for any two of the active static values.
You can configure multimode channels to have up to eight sets of alarm parameters, including alert and danger set points and alarm time delays. Each set may be configured for a specific machine mode.
As the machine changes modes, the monitor can switch to a specific set using contacts on multimode I/O modules or software commands through a communications gateway.
External Termination Blocks
125808-08 Prox/Velom External Termination Block Euro Style connectors
125808-11 Multimode Prox/Velom External Termination Block Euro Style connectors
125808-12 Multimode Positive Input External Termination Block Euro Style connectors
125808-13 Multimode Recorder Output and Mode Input External Termination Block Euro Style connectors
128702-01 Recorder External Termination Block Euro Style connectors
128015-08 Prox/Velom External Termination Block Terminal Strip Connectors
128015-11 Multimode Prox/Velom External Termination Block Terminal Strip connectors
128015-12 Multimode Positive Input External Termination Block Terminal Strip Connectors
128015-13 Multimode Recorder Output and Mode Input External Termination Block Terminal Strip connectors
128710-01 Recorder External ET Block Terminal Strip connectors