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Product Description
The Bently Nevada 3500/40M Proximitor Monitor is a four-channel machinery protection and condition monitoring module designed to work with proximity transducers. It processes vibration, position, and REBAM signals, providing accurate measurements and programmable alarms. Each channel can be configured independently using 3500 Rack Configuration Software to perform radial vibration, thrust position, differential expansion, eccentricity, or REBAM monitoring. The system ensures continuous protection by comparing monitored parameters against set alarm limits.
Technical Specifications
| Parameter | Specification |
|---|---|
| Channels | 4 (programmable in pairs) |
| Supported Functions | Radial vibration, Thrust, Differential expansion, Eccentricity, REBAM |
| Inputs | 1–4 proximity transducer signals |
| Power Consumption | 7.7 W typical |
| Input Impedance | 10 kΩ |
| Sensitivity | Radial Vibration/Thrust/Eccentricity: 3.94 or 7.87 mV/μm; Differential Expansion: 0.394 or 0.787 mV/μm; REBAM: 40 or 80 mV/μm |
| Output Impedance | 550 Ω |
| Transducer Power Supply | -24 VDC |
| Frequency Response | User programmable, depending on mode |
| Accuracy | ±0.33% full scale typical (varies by function) |
| Operating Temperature | -30°C to +65°C (standard I/O) |
| Storage Temperature | -40°C to +85°C |
| Humidity | 95% non-condensing |
| Dimensions | 241.3 × 24.4 × 241.8 mm |
| Weight | 0.91 kg |
| Rack Space | 1 full-height front slot (monitor), 1 full-height rear slot (I/O module) |
Applications
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Turbomachinery monitoring for steam, gas, and hydro turbines.
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Condition monitoring of compressors, pumps, and motors.
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Thrust position tracking in axial bearing systems.
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Differential expansion monitoring in thermal machinery.
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Eccentricity measurement for rotor alignment and condition.
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Rolling element bearing analysis using REBAM.
Advantages
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Multi-function capability in one module, reducing hardware requirements.
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High measurement accuracy for reliable machine protection.
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Flexible configuration per channel pair for customized monitoring.
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Supports hazardous area approvals for industrial environments.
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Buffered outputs for easy signal analysis without interrupting monitoring.
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Compatible with the full Bently Nevada 3500 rack system.
FAQ
Q1: What types of measurements can the 3500/40M perform?
A1: Radial vibration, thrust position, differential expansion, eccentricity, and REBAM.
Q2: How many channels does the monitor have?
A2: It has four channels, programmable in pairs.
Q3: Can each channel be configured independently?
A3: Channels are configured in pairs, so two channels share the same function.
Q4: What is the power consumption?
A4: The module typically consumes 7.7 W.
Q5: What is the accuracy of measurements?
A5: ±0.33% of full scale typical, depending on the measurement function.
Q6: Is the module suitable for hazardous areas?
A6: Yes, it has ATEX, IECEx, and CSA approvals depending on the I/O module type.
Q7: What is the size and weight of the monitor?
A7: 241.3 × 24.4 × 241.8 mm, 0.91 kg.
Q8: Does it provide buffered outputs?
A8: Yes, each channel has a buffered transducer output.
Q9: How is alarm configuration handled?
A9: Via the 3500 Rack Configuration Software, with adjustable alert and danger setpoints.
Q10: Can it operate in marine environments?
A10: Yes, it is certified for ABS and DNV GL marine applications.
Related Models (Same Series or Function)
| Model | Description | Dimensions (mm) | Weight |
|---|---|---|---|
| 3500/40M-01-00 | Proximitor Monitor, Internal Termination | 241.3×24.4×241.8 | 0.91 kg |
| 3500/40M-02-00 | Proximitor Monitor, External Termination | 241.3×24.4×241.8 | 0.91 kg |
| 3500/40M-03-00 | Proximitor Monitor, Internal Barrier | 241.3×24.4×241.8 | 0.91 kg |
| 3500/42M | Proximitor/Seismic Monitor | 241.3×24.4×241.8 | 0.91 kg |
| 3500/44M | Aeroderivative GT Vibration Monitor | 241.3×24.4×241.8 | 0.91 kg |
| 3500/46M | Hydro Monitor | 241.3×24.4×241.8 | 0.91 kg |
Popular Bently Nevada Models
| Model | Description | Dimensions (mm) | Weight |
|---|---|---|---|
| 3500/42M-01-00 | Proximitor Seismic Monitor | 241.3×24.4×241.8 | 0.91 kg |
| 3500/44 | Aeroderivative Monitor | 241.3×24.4×241.8 | 0.91 kg |
| 3500/50 | Keyphasor Module | 241.3×24.4×241.8 | 0.91 kg |
| 3500/53 | Overspeed Detection Module | 241.3×24.4×241.8 | 0.91 kg |
| 3500/60 | Temperature Monitor | 241.3×24.4×241.8 | 0.91 kg |
| 3500/65 | Keyphasor Module | 241.3×24.4×241.8 | 0.91 kg |
