Description
3. Key Technical Specifications
- Module Type: 3500/40 Proximitor Monitor
- Channels: 4 independent
- Transducer Type: Eddy current proximity (3300 XL series compatible)
- Measurements: Radial vibration, position, gap voltage
- Frequency Range: Standard vibration monitoring bands
- Resolution: High resolution for precise shaft position
- Operating Temperature: -30°C to +65°C
- Status: Front panel LEDs for alarm and OK status
- I/O: Paired with Proximitor I/O module
- Power: Backplane powered from rack
4. Product Introduction
The Bently Nevada 350040-01-05 is a 4-channel Proximitor Monitor for the 3500 system. It conditions signals from eddy current proximity probes to provide radial vibration, shaft position, and gap measurements.
It is a core module for monitoring journal bearing machines. The -01-05 configuration supports standard proximity transducer inputs for vibration and thrust position applications.
- 350040-01-05
- 350040-01-05
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No OK LED | Probe or wiring issue | ✅ High | Measure gap voltage at terminals | Verify probe gap and cable integrity |
| High vibration alarm | Actual machine issue or probe fault | ✅ High | Compare with adjacent channels | Cross-check with other monitors |
| Erratic readings | Loose connector | ✅ High | Inspect probe cable and I/O connections | Reseat and test continuity |
| No position signal | Improper scaling | ✅ Medium | Check configuration parameters | Verify transducer scale factor |
| Channel fault | I/O module problem | ✅ Medium | Swap I/O if possible | Test with known good probe |
Use the configuration software to view live gap voltages and waveforms for diagnosis.
6. Frequently Asked Questions (FAQ)
What probes work with the 350040-01-05? It is designed for Bently Nevada 3300 XL 8mm, 11mm, and similar eddy current proximity transducers. Confirm compatibility for your probe diameter and system length.
How many machines can one module monitor? Typically one or two shafts depending on measurement requirements (X-Y vibration pairs plus thrust).
Is this module hot-swappable? In most cases yes, but confirm your rack configuration and follow procedures to avoid alarms during swap.
What is the difference between 3500/40 and other monitors? The 3500/40 is specifically for proximity probe signals. Use 3500/42M for more advanced vibration analysis options.
Do I need to configure each channel individually? Yes. Set gap voltages, alarm setpoints, and filter options per channel in the 3500 configuration software.
How do you test these Proximitor monitors? We connect calibrated probes or simulators, verify gap voltage linearity, alarm activation, and signal accuracy across the full range.
Why keep spares of the 350040-01-05? Proximitor monitors are critical for shaft vibration protection. A tested spare minimizes downtime on critical rotating equipment.



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