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Bently Nevada 3500/33 149986-01: Multi-Function Machinery Protection Module
Product Description
The Bently Nevada 3500/33 149986-01 is a high-performance multi-function machinery protection module, a key component of the Bently Nevada 3500 Machinery Protection and Condition Monitoring System. Engineered to deliver comprehensive oversight of rotating machinery health, this module integrates vibration, position, and temperature monitoring into a single, compact unit. It leverages advanced digital signal processing to detect early signs of mechanical faults—such as unbalance, misalignment, and bearing wear—providing critical data to operators and maintenance teams. By consolidating multiple measurement functions, it simplifies system architecture, reduces installation complexity, and ensures reliable protection for critical industrial assets.
Product Parameters
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Parameter
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Specification
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Input Channels
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3 universal channels supporting vibration, position, and RTD temperature sensors
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Vibration Measurement Range
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±500 mV peak (proximity probes); 0.05–200 mm/s (velocity transducers)
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Position Measurement Range
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0–1500 μm (shaft displacement, thrust bearing clearance)
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Temperature Measurement Range
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-50°C to +200°C (via 3-wire RTDs)
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Frequency Response
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0.1 Hz to 10 kHz (vibration); 0.05 Hz to 5 Hz (temperature)
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Sampling Rate
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64 kHz per channel
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Alarm Configuration
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Programmable alarm and danger thresholds with adjustable delays (0.05–120 s)
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Output Signals
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4–20 mA analog output per channel; digital data via 3500 backplane interface
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Product Specifications
- Power Supply: 24 VDC ± 15% with maximum current consumption of 300 mA, compatible with 3500 series redundant power supplies.
- Operating Temperature: -10°C to 65°C (14°F to 149°F), ensuring reliability in harsh industrial environments and enclosed control cabinets.
- Storage Temperature: -40°C to 85°C (-40°F to 185°F), maintaining durability during transportation and long-term storage.
- Humidity Resistance: 5% to 95% non-condensing, suitable for humid settings such as coastal facilities and wastewater treatment plants.
- Dimensions: 160 mm (width) × 100 mm (height) × 190 mm (depth) (6.3 in × 3.9 in × 7.5 in), designed for seamless rack mounting in 3500 system enclosures.
- Weight: Approximately 1.5 kg (3.3 lbs), lightweight for easy handling during installation and maintenance.
- Mounting: Rack-mounted with tool-less locking mechanisms, preventing vibration-induced displacement in high-shock environments.
- Certifications: Complies with API 670, IEC 61010-1, and IEC 61326-1, meeting global standards for industrial safety and electromagnetic compatibility.
Series
The 3500/33 149986-01 is a critical member of the Bently Nevada 3500 series, a modular suite of machinery protection and condition monitoring solutions. The 3500 series is renowned for its scalability, allowing users to customize systems with vibration monitors, communication gateways, power supplies, and multi-function modules like the 3500/33. Trusted across industries for its reliability and compliance with strict standards, the series protects rotating machinery in power generation, oil & gas, and manufacturing. This 3500/33 model enhances the series by offering integrated multi-parameter monitoring, reducing hardware redundancy and streamlining data flow within the system.
Features
Integrated Multi-Parameter Monitoring
3 universal channels support vibration (proximity/velocity), shaft position, and RTD temperature measurements, providing a holistic view of machinery health in one module.
Ultra-High Resolution Sampling
64 kHz per-channel sampling captures fine-grained signal details, enabling detection of subtle fault signatures (e.g., early bearing fatigue, gear mesh anomalies) for precise diagnostics.
Broad Sensor Compatibility
Works seamlessly with Bently Nevada 3300 series proximity probes, velocity transducers, and industry-standard RTDs, as well as third-party sensors, adapting to diverse equipment types.
Adaptive Alarm Logic
User-programmable alarm and danger thresholds with configurable delays (0.05–120 s) minimize false alarms while ensuring critical faults trigger immediate alerts, optimizing maintenance response times.
Backplane Integration
Connects to the 3500 system backplane for real-time data sharing with controllers and communication modules, enabling centralized monitoring, remote access, and SCADA/DCS integration.
Function
The primary function of the 3500/33 149986-01 is to monitor, process, and analyze key parameters of rotating machinery. It receives analog signals from vibration sensors (bearing housings/shafts), position sensors (thrust bearings/rotors), and temperature sensors (critical components), converting them to digital data via high-speed sampling. Advanced algorithms extract actionable metrics (e.g., vibration RMS, peak-to-peak displacement, temperature trends), which are compared against user-defined thresholds. When anomalies are detected, it activates relays or system alerts to notify operators, enabling proactive maintenance and preventing unplanned downtime.
Use
In industrial operations, the module is installed in 3500 system racks, connected to sensors mounted on rotating equipment such as turbines, compressors, pumps, and motors. It continuously tracks vibration patterns, shaft position, and component temperatures, feeding real-time data to local HMIs or centralized control systems. Operators use its insights to assess machinery health at a glance, while maintenance teams leverage historical trends for predictive maintenance planning. Its compact design and multi-parameter capability make it ideal for space-constrained environments where simplified system architecture is prioritized.
Application Fields
Power Generation
Monitors steam/gas turbines, generators, and boiler feed pumps in coal, gas, and nuclear plants, detecting rotor unbalance, bearing degradation, and overheating to ensure grid stability and prevent power outages.
Oil and Gas
Protects centrifugal compressors, pipeline pumps, and gas turbines in upstream drilling, midstream transportation, and downstream refining, withstanding high pressures and corrosive environments to safeguard energy infrastructure.
Chemical Processing
Tracks agitators, reactor mixers, and centrifuges in chemical plants, identifying vibration-induced leaks, shaft misalignment, or overheating to maintain process safety and regulatory compliance.
Pulp and Paper
Monitors paper machine rollers, dryer sections, and fan motors, detecting bearing wear or misalignment to minimize production disruptions and maintain product quality in high-speed manufacturing.
Mining and Metals
Safeguards crushers, conveyor drives, and slurry pumps in mining operations, withstanding dust, vibration, and temperature extremes to ensure continuous operation of critical extraction equipment.
In summary, the Bently Nevada 3500/33 149986-01 is a versatile, high-performance module that strengthens the 3500 series’ ability to protect rotating machinery. Its integrated monitoring, precision sampling, and seamless integration make it indispensable for industries seeking reliable, cost-effective solutions to optimize asset health and operational efficiency.
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