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Product Introduction
The Bently Nevada 3500/40-03-00 Proximitor Monitor is a high-precision module designed for use within the Bently Nevada 3500 Machinery Protection System, which is widely used across industrial facilities for monitoring rotating machinery. This monitor provides continuous, accurate measurement of shaft vibration, thrust position, and radial displacement using proximity probes and Proximitor sensors.
Built with advanced signal processing and conditioning circuits, the 3500/40-03-00 converts raw probe signals into meaningful engineering data for machinery diagnostics and protection. It features dual independent input channels, each capable of being configured for various measurement modes, offering flexibility for diverse machinery configurations such as turbines, compressors, and pumps.
The module is fully compatible with Bently Nevada proximity probe systems such as the 3300, 3300 XL, and NSv series, ensuring a seamless integration with existing setups. It is engineered to provide exceptional measurement accuracy, reliability, and response time, which are essential for modern predictive maintenance and protection systems.
Technical Specifications
| Parameter | Description |
|---|---|
| Model Number | 3500/40-03-00 |
| Product Type | Proximitor Monitor |
| Channels | Two independent input channels |
| Input Type | Proximity probe and Proximitor sensor signals |
| Measurement Types | Shaft radial vibration, Thrust position, Differential expansion |
| Input Voltage Range | -24 VDC to +24 VDC |
| Sensitivity | 200 mV/mil (7.87 mV/μm) typical |
| Transducer Compatibility | Compatible with Bently Nevada 3300, 3309, and 3300 XL probes |
| Frequency Response | 0.5 Hz to 10 kHz (-3 dB) |
| Amplitude Accuracy | ±0.25% of full-scale output |
| Phase Accuracy | ±0.5° nominal |
| Alarm Levels | Two levels per channel (Alert and Danger) |
| Output Signals | 4–20 mA proportional to measured variable; Buffered dynamic output via BNC |
| Communication Interface | Configurable via 3500 Rack software |
| Relay Interface | Compatible with 3500/32M and 3500/33M relay modules |
| Power Supply Voltage | 24 VDC (supplied from rack backplane) |
| Power Consumption | 6.5 W typical |
| Operating Temperature | -30°C to +65°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | Up to 95% non-condensing |
| EMC Compliance | Meets IEC 61326, EN 61000-6-4/6-2 |
| Shock Resistance | 30 g peak, 11 ms half-sine |
| Vibration Resistance | 5–2000 Hz, 0.3 mm peak displacement |
| Mounting Type | 3500 Rack-mounted (single slot) |
| Dimensions (W × H × D) | 241.3 x 24.4 x 241.8 mm |
| Weight | 0.91 kg |
| Certifications | CE, CSA, ATEX, IECEx compliant |
Product Applications
The Bently Nevada 3500/40-03-00 Proximitor Monitor plays a critical role in machinery protection and performance optimization. It is commonly used for real-time vibration monitoring, providing early warning of potential mechanical issues before they lead to costly failures.
Typical applications include:
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Steam Turbines: Measurement of radial vibration and thrust displacement for early detection of imbalance or shaft rubbing.
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Gas Compressors: Monitoring shaft vibration to detect misalignment, bearing wear, and rotor instability.
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Electric Generators: Used to monitor eccentricity, rotor vibration, and alignment accuracy.
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Industrial Pumps: Continuous vibration monitoring for detecting cavitation, bearing issues, and imbalance.
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Centrifuges and Fans: Ensures smooth mechanical operation and minimizes unplanned shutdowns.
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Critical Machinery Systems: Integration with control systems for predictive maintenance and asset reliability programs.
Its versatility and robustness make it suitable for oil and gas, power generation, chemical processing, paper mills, and marine propulsion systems.
Product Advantages
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High-Resolution Vibration Monitoring: Offers precise detection of shaft vibration amplitude and phase angle.
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Dual Independent Channels: Each channel can be configured individually for different measurement types.
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Excellent Noise Immunity: Designed with advanced filtering and shielding to minimize electrical interference.
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Fast Response Time: Provides immediate updates to control systems for protective actions.
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Multiple Alarm Levels: Built-in dual alarm thresholds (Alert and Danger) for reliable fault indication.
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Compatibility with Bently Nevada Sensors: Ensures seamless integration across the 3300 and 3300 XL probe systems.
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Rack Hot-Swap Capability: Can be replaced without system shutdown, reducing maintenance downtime.
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Comprehensive Data Accessibility: Provides buffered and proportional outputs for both local and remote analysis.
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Robust Industrial Design: Built to operate under vibration, temperature extremes, and harsh process conditions.
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Enhanced System Integration: Works efficiently with other 3500 modules such as 3500/25 Keyphasor and 3500/32M Relay modules.
FAQ
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What measurement modes are supported by the 3500/40-03-00 Proximitor Monitor?
It supports multiple modes including radial vibration, thrust position, and differential expansion monitoring. -
How many input channels does this module provide?
It provides two fully independent channels that can be configured separately for different measurements. -
Is the module compatible with older Bently Nevada probe systems?
Yes, it is compatible with 3300, 3309, and 3300 XL proximity probe systems. -
How are alarms managed on this module?
Each channel supports two alarm setpoints—Alert and Danger—that can trigger relays or control actions via relay modules. -
What is the frequency range for vibration monitoring?
The monitor provides a wide frequency response range of 0.5 Hz to 10 kHz, suitable for low- and high-speed machinery. -
Can dynamic signals be accessed for vibration analysis?
Yes, buffered dynamic outputs are available on front BNC connectors for external analyzers. -
How is the configuration of the module performed?
Configuration is done through the 3500 rack configuration software, allowing users to select measurement mode and alarm thresholds. -
What level of amplitude accuracy does this module provide?
The amplitude accuracy is within ±0.25% of full-scale, ensuring precise vibration and position readings. -
Can the 3500/40-03-00 be hot-swapped during system operation?
Yes, the module supports hot-swapping, allowing replacement without powering down the 3500 rack. -
Is the module certified for hazardous or industrial environments?
Yes, it is certified under CE, CSA, ATEX, and IECEx standards for safe use in industrial and hazardous areas.
Related Models (Same Series)
| Model Number | Description |
|---|---|
| 3500/40-01-K0 | Dual Channel Proximitor Monitor |
| 3500/40M-01 | Enhanced Proximitor Monitor |
| 3500/42M-01 | Velocity and Acceleration Monitor |
| 3500/25-01-01-04-01 | Enhanced Keyphasor Module |
| 3500/32M-01 | Four Channel Relay Module |
| 3500/33M | Sixteen Channel Relay Module |
Popular Models from the Same Brand
| Model Number | Description |
|---|---|
| 330103-00-05-10-02-00 | Standard Proximity Probe |
| 330130-040-00 | Extension Cable for Proximity System |
| 330180-91-05 | Proximitor Sensor for Shaft Vibration |
| 3500/15-01-00 | Power Supply Module |
| 3500/22M-01 | Transient Data Interface Module |
| 3500/60-01-00 | Temperature Monitoring Module |
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