Bently Nevada 3500/46M 176449-06 Hydro Monitor
The 176449-06 Hydro Monitor for multi-parameter protection and multimode operation in a 3500 rack.
Key Information
3500/46M 176449-06 is the Bently Nevada Hydro Monitor spare identified in the current 3500/46M documentation. It is not a 3500/50M tachometer part.
The monitor conditions selected hydro-machine transducer signals, compares measurements with programmed alarms and supports operating-mode changes where a plant requires different protection settings.
Functions
- Processes compatible proximity, air-gap, velocity, acceleration and dynamic-pressure signal families.
- Supports hydro measurement functions such as radial vibration, thrust position and stator-related monitoring when correctly configured.
- Provides multiple alarm or setpoint arrangements for changing machine operating modes.
- Offers front buffered outputs for service measurements and recorder outputs for plant interfaces.
Specifications
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Complete Identification | 3500/46M 176449-06 |
| Product Family | 3500 Machinery Protection System |
| Product Role | Hydro Monitor |
| Input Capacity | One to four sensor signals |
| Typical Power Consumption | 7.7 W |
| Recorder Outputs | Four 4–20 mA outputs |
| Buffered Output Impedance | 550 Ω |
| Rack Position | One full-height front slot with matching rear I/O slot |
Installation
- Identify the fitted rear I/O module and every sensor loop before removing the existing monitor.
- Restore channel functions, mode logic, scaling, alarm levels and plant communication settings from the controlled backup.
- Keep external termination blocks and cables matched to the external-I/O option; do not combine them with an internal-termination module.
- Functionally test each operating mode and protective output after commissioning.
Lifecycle
- Maintain the monitor, rear I/O and transducer records as one protection-loop package.
- Verify rack firmware and configuration-software compatibility before installing a replacement.
- Retain proof-test results and alarm-change authorization with the machine safety documentation.
FAQ
Why is the correct identity 3500/46M 176449-06 rather than 3500/50M 176449-06?
Bently Nevada assigns part 176449-06 to the Hydro Monitor; the 3500/50M family uses different tachometer monitor spares.
Which rear I/O should accompany 3500/46M 176449-06?
Select it from the sensor mix, termination method and whether multimode or positive-input channels are required.
How are operating modes changed on 3500/46M 176449-06?
Use the configured rack contact logic or supported software-gateway method defined by the plant design.
What configuration must be preserved for 3500/46M 176449-06?
Save every channel function, sensor scale, mode setpoint group, alarm delay and communication mapping.
Can 3500/46M 176449-06 be commissioned from a single static check?
No. Each sensor path, alarm path and configured operating mode should be validated separately.
What information should accompany a 3500/46M 176449-06 quotation request?
Provide rear-I/O part numbers, sensor models, rack revision, mode logic and the existing configuration backup.
