Description
Product Introduction & Engineering Value
I’ve seen plenty of turbine trips blamed on sensors when the actual problem was an aging monitor module. The BENTLY 350040-01-00 (176449-01) has remained a common choice because it accurately conditions proximity transducer signals before they reach the plant protection logic.
As a member of the 3500 Series, the 3500/40M continuously measures shaft vibration, thrust position, differential expansion, eccentricity, and other rotating equipment parameters. It integrates directly into existing 3500 racks and supports configurable alarm thresholds for critical assets.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | BENTLY Nevada |
| Model | 350040-01-00 |
| Spare Part Number | 176449-01 |
| Product Family | 3500/40M Series |
| Product Type | Proximitor Monitor |
| Monitoring Channels | 4 |
| Sensor Input | Eddy-current proximity transducers |
| Typical Power Consumption | Approximately 7.7 W |
| Configuration Software | 3500 Rack Configuration Software |
| Measured Parameters | Radial vibration, thrust position, differential expansion, eccentricity, REBAM |
| Rack Installation | 3500 Series Rack |
| Output | Configurable static values and programmable alarm outputs |
Field Application & “The Trench” Experience
A combined-cycle power station reported intermittent high-vibration alarms on a steam turbine immediately after replacing several proximity probes. Probe calibration was verified, but the monitor continued reporting unstable values. Installing a tested 350040-01-00 (176449-01) restored stable measurements. Subsequent testing confirmed that the original monitor had developed intermittent signal-conditioning faults after years of continuous service.
Typical applications include:
- Steam turbine journal bearing vibration monitoring
- Boiler feed pump thrust position protection
- Centrifugal compressor shaft displacement monitoring
350040-01-00 176449-01
350040-01-00 176449-01
Transparency SOP: QA & Testing
Before shipment, every module is subjected to documented inspection and functional verification.
- ✓ PCB inspection for contamination, corrosion, and damaged components
- ✓ Connector and backplane interface examination
- ✓ Power-on verification in a compatible 3500 rack
- ✓ Channel response verification using calibrated proximity transducer simulators
- ✓ Alarm configuration validation
- ✓ Burn-in observation prior to final packaging
- ✓ Anti-static packaging with traceable serial documentation
The Veteran’s Tech Trap Guide
⚠️ Don’t assume every proximity probe calibration matches the previous configuration. Probe sensitivity and extension cable combinations directly affect measurement accuracy.
⚠️ Firmware compatibility matters. Older rack firmware may not support every feature available in later 3500/40M revisions. Always verify software and firmware compatibility before commissioning.
PRO TIP: If replacing only the monitor, save the existing rack configuration before removal. Restoring the original configuration eliminates many startup issues caused by incorrect measurement scaling or alarm settings.
Dynamic FAQ
Q1. What does the 350040-01-00 monitor?
It accepts signals from proximity transducers and measures shaft vibration, thrust position, differential expansion, eccentricity, and related rotating machinery parameters.
Q2. Is 176449-01 the same as 350040-01-00?
Yes. 176449-01 is the spare part number commonly associated with the 3500/40M Proximitor Monitor, while 350040-01-00 identifies a specific ordering configuration.
Q3. Which transducers are supported?
The monitor is designed for compatible BENTLY Nevada eddy-current proximity transducers, including commonly deployed 3300 XL systems, when configured according to the application requirements.
Q4. Does replacing the monitor require recalibration?
Not necessarily. If the replacement module uses the same configuration and the transducer system remains unchanged, recalibration may not be required. Functional verification after installation is still recommended.
Q5. How is New Surplus inventory verified?
New Surplus units are inspected for unused condition, verified for part number authenticity, visually examined, and functionally tested where applicable before shipment.
Q6. Can this monitor be installed in any 3500 rack?
It is intended for compatible BENTLY Nevada 3500 Series racks with the correct I/O module and supported firmware/software revisions. Compatibility should be confirmed before installation.
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