The Bently Nevada 3500/40M Proximitor Monitor (176449-01+135489-04) is a high-precision module designed for monitoring shaft displacement and vibration in critical rotating machinery. As part of the 3500 Series, this module interfaces with AC Proximitor probes to convert physical displacement into precise electrical signals for condition monitoring and machinery protection.

This version of the 3500/40M supports dual or triple modular redundant (TMR) configurations, ensuring reliable operation in safety-critical systems. By continuously tracking shaft position and vibration, the module enables early detection of mechanical issues such as misalignment, imbalance, or looseness. This allows plant operators to take preventive actions before machinery damage occurs.

The module is widely deployed in industries such as power generation, oil & gas, petrochemical, and other sectors where the protection of high-value rotating equipment is critical.

Product Parameters

Product Applications

The 3500/40M Proximitor Monitor is used for precise machinery monitoring in various industrial applications:

• Turbine Monitoring – Measures rotor position and vibration for early fault detection.

• Compressor & Pump Protection – Detects bearing wear, imbalance, and mechanical looseness.

• Generator Monitoring – Ensures rotor stability and prevents vibration-induced damage.

• Oil & Gas Facilities – Integrates with remote monitoring systems for real-time equipment protection.

• Petrochemical & Process Plants – Provides condition-based monitoring for critical rotating equipment.

• Predictive Maintenance Programs – Supports trend analysis and fault diagnostics using high-fidelity shaft displacement data.

Product Advantages

• High Accuracy – Delivers precise shaft displacement and vibration measurements.

• Redundant Operation – Supports TMR or dual redundancy for continuous operation even during module faults.

• Rapid Response – Provides real-time monitoring for immediate detection of abnormal machinery conditions.

• Integrated Signal Conditioning – Built-in filtering and amplification optimize measurement quality.

• Diagnostic Indicators – LED indicators clearly show channel status and probe signal integrity.

• Seamless Integration – Compatible with all 3500 Series modules and AC Proximitor probes.

• Robust Industrial Design – Withstands vibration, electrical noise, and temperature variations in harsh environments.

FAQ

1. What types of probes are compatible with this module?

The 3500/40M is compatible with Bently Nevada AC Proximitor probes.

2. How many channels does the module support?

It supports 1–2 channels per module depending on configuration.

3. What is the frequency response of the module?

The module has a typical frequency response of 0–10 kHz.

4. Can it be used in redundant configurations?

Yes, it supports both dual and triple modular redundancy (TMR) for enhanced reliability.

5. Can the module interface with DCS or PLC systems?

Yes, processed outputs can be routed to SCADA, PLC, or DCS systems for monitoring and control.

6. How are diagnostics displayed?

LED indicators show channel status, probe signal integrity, and module faults.

7. What excitation voltage does the module provide to probes?

It supplies an excitation voltage of 8–12 VDC to Proximitor probes.

8. Is hot-swapping supported?

No, the module should be powered down before installation or removal to maintain system integrity.

9. What types of signals are output by the module?

It outputs processed shaft displacement, gap measurements, and vibration information.

10. Can this module detect mechanical issues like misalignment or imbalance?

Yes, continuous monitoring allows detection of misalignment, imbalance, looseness, and other mechanical faults.