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Nevada 3500 40M
The Bently Nevada 3500/40M is a Proximitor™ preamplifier monitoring module manufactured by Baker Hughes (Bently Nevada). As a core module in the 3500 series vibration monitoring system, it is specifically designed for rotating machinery (such as steam turbines, compressors, pumps, etc.) to monitor key parameters including shaft displacement, vibration amplitude, and differential expansion, providing real-time mechanical protection and predictive maintenance.+
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1. Core Parameters & Technical Specifications
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Parameter
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Specification
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Description
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|---|---|---|
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Measurement Channels
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4 Channels
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Simultaneously monitors multiple points (e.g., radial vibration, axial displacement, etc.)
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Measurement Range
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Vibration: 0.5 Hz – 10 kHz; Displacement: ±2 mm (±80 mils)
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Covers a wide range from extremely low frequency to high frequency
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Accuracy
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±0.5%
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High-precision measurement, meeting standards such as API 670
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Dynamic Range
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Vibration: Up to 2000 µm (peak-to-peak)
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Adapts to amplitude changes under different working conditions
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Power Requirement
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24 VDC (AC 85-132V optional)
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Multi-voltage compatibility, suitable for global industrial environments
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Environmental Adaptability
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Operating Temperature: -40°C to +85°C; Protection Level: IP65
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Resistant to harsh industrial environments
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Dimensions & Weight
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Approx. 229 mm x 89 mm x 41 mm
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Compact design, weight approx. 1.5 kg
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Communication Interface
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4-20 mA, Modbus RTU, Ethernet/IP, RS-485
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Supports multiple industrial protocols for easy integration
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2. Main Product Features
Multifunctional Integration
- Proximitor Function: Not only monitors vibration, but also measures shaft displacement, Differential Expansion, shaft Eccentricity, and REBAM® (Rotating Element Balance and Misalignment) parameters.
- Early Warning Protection: Triggers mechanical protection alarms by comparing measured values with user-set alarm thresholds to prevent equipment damage.
High Precision & Reliability
- Adopts 16-bit ADC and programmable filters, with ±0.5% system accuracy to ensure data accuracy.
- Equipped with strong anti-interference capability and a wide operating temperature range (-40°C to +85°C), suitable for extreme industrial environments.
Flexible Installation & Compatibility
- Supports multiple installation methods such as EIA standard rail mounting, panel cutout mounting, and wall mounting.
- Seamlessly integrates with the 3500 system and supports multiple output signals (analog and digital) for easy docking with DCS/PLC systems.
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3. Structure & Composition
- Input Terminal Block: Used to connect proximity probes, seismic sensors, or tachometers.
- Signal Processing Circuit: Includes filters, amplifiers, and analog-to-digital converters (ADC), responsible for converting analog signals into digital signals.
- Internal Isolation Design: Provides electrical isolation to protect the module from high-voltage interference.
- Communication Interface: Located on the back or side of the module, connected to the communication bus of the 3500 system.
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4. Typical Application Fields
- Power Generation Industry: Shaft displacement and vibration monitoring of steam turbines and generator sets (API 670 standard).
- Petrochemical Industry: Online condition monitoring of compressors and pump groups.
- Power and Metallurgy Industry: Mechanical protection of large motors and turbines.
- Paper and Textile Industry: Operation condition monitoring of long-shaft equipment.
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5. Installation & Maintenance Recommendations
Pre-installation Preparation
- Confirm that the 3500 rack is correctly installed and powered on.
- Prepare I/O interfaces and sensor cables in accordance with the installation manual (e.g., Model 140734-01 manual).
Physical Installation
- Slide the 3500/40M module into the full-height module slot of the rack, ensuring the connector is fully engaged.
- Connect the sensor cable to the input port on the back of the module
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