Bently 350005-01-02-00-00-00

Technical Specifications

• Part Number: 350005-01-02-00-00-00
• Module Type: Single-channel vibration transmitter (displacement-optimized, analog output, signal conditioning)
• Primary Measurement Parameters: Shaft displacement (peak-to-peak, optimized); selectable vibration velocity (RMS) and acceleration (peak)
• Measurement Ranges (Configurable): Displacement: 0–15 mm peak-to-peak (default); 0–5/10/20 mm peak-to-peak (user-selectable via DIP switches)
• Velocity: 0–50 mm/s RMS
• Acceleration: 0–50 g peak

Function Features

• Displacement-Optimized Signal Conditioning: Enhanced hardware and firmware are tailored for low-frequency shaft displacement measurement (0.1 Hz–1,000 Hz), delivering ±0.15% accuracy—far superior to standard modules for capturing subtle shaft movements. This precision is critical for detecting early-stage issues like shaft misalignment, rotor rub, and axial drift in turbines, compressors, and large gearboxes, where small displacements can lead to catastrophic failures.
• Single-Channel Targeted Monitoring: The dedicated single-channel design focuses processing power exclusively on critical shaft measurements, eliminating cross-channel interference. This makes it ideal for retrofitting into existing 3500 systems where specific assets (e.g., turbine high-pressure rotor, compressor pinion shaft) require enhanced displacement monitoring without full system overhauls.
• Multi-Parameter Measurement Flexibility: While optimized for displacement, users can switch between displacement, velocity, and acceleration measurements via front-panel DIP switches. This adaptability supports diverse machinery types—using displacement for shaft monitoring, velocity for pump bearings, and acceleration for high-speed motors—reducing the need for multiple specialized modules.
• Dual Isolated Analog Outputs: Two independent 4–20 mA outputs provide redundant signal transmission to primary DCS and secondary monitoring systems. Galvanic isolation prevents ground loops and signal corruption, a non-negotiable requirement for safety-critical applications like nuclear power plant turbines and offshore oil compressors.
• Dual Status Outputs for Granular Alerts: Separate dry contacts for sensor faults and displacement threshold alerts enable precise troubleshooting. The displacement threshold output can be configured to trigger warnings at user-defined levels (e.g., 80% of API 670 limits), allowing maintenance teams to address issues before they escalate to unplanned downtime.
• Advanced EMI/RFI Shielding: Module-level EMI filtering and shielded input terminals protect against electromagnetic interference from variable-frequency drives, high-voltage cables, and industrial radios. This ensures stable, accurate displacement measurements in electrically noisy environments like steel mills, petrochemical refineries, and mining operations.
• Seamless 3500 System Integration: Designed to slot directly into Bently’s 3500 chassis, the module integrates seamlessly with 3500 display modules, alarm logic solvers, and communication modules (Ethernet/Modbus). This modularity allows users to scale from single-point monitoring to full machinery protection systems, leveraging existing 3500 infrastructure and reducing capital costs.
• Extreme Environment Reliability: With a temperature range of -40 °C to +70 °C and robust shock/vibration resistance, the module operates reliably in harsh conditions—from arctic oil pipelines and desert power plants to high-vibration mining equipment. It maintains calibration and accuracy even in environments that degrade standard monitoring devices.
• User-Friendly On-Site Operation: Front-panel DIP switches for range selection and parameter switching, paired with LED indicators (power, signal, fault, threshold alert), enable on-site setup and troubleshooting without specialized software. Technicians can reconfigure the module in minutes, minimizing downtime during maintenance or machinery changes.
• Global Compliance & Hazardous Area Support: UL, CSA, and CE certifications ensure compliance with international electrical safety and EMC standards. Optional ATEX/IECEx certification allows installation in explosive environments (e.g., offshore oil rigs, chemical plant reactors) without additional enclosures, expanding its application scope.

Application Scenarios

• Nuclear Power (Reactor Coolant Pumps): Installed in nuclear power plants to monitor reactor coolant pump shaft displacement. The module’s enhanced displacement accuracy detects subtle rotor movement that could indicate seal degradation or bearing wear, while dual outputs send data to safety-grade DCS and plant monitoring systems. Compliance with strict nuclear safety standards ensures reliable operation in containment areas.
• Oil & Gas (Centrifugal Compressors): Deployed in offshore oil platforms and onshore refineries to monitor centrifugal compressor shaft displacement. When equipped with optional ATEX/IECEx certification, it operates safely in Zone 1 hazardous areas. The displacement threshold alert triggers maintenance before rotor rub or misalignment causes costly compressor failure.
• Petrochemical (Ethylene Cracker Turbines): Used in ethylene cracker plants to monitor steam turbine shaft misalignment and axial movement. The module’s low-frequency response captures thermal expansion-induced shaft displacement, ensuring compliance with API 670 standards. Integration with plant ESD systems provides automatic shutdown capability if displacement exceeds safe limits.
• Steel Manufacturing (Rolling Mill Gearboxes): Installed in steel mills to monitor rolling mill gearbox input and output shaft displacement. The module’s high resolution detects gear meshing-induced shaft movement, while the EMI/RFI shielding resists interference from nearby electric arc furnaces. Displacement alerts prevent gear tooth failure and unplanned production stops.
• Power Generation (Steam Turbines): Deployed in coal-fired and gas-fired power plants to monitor steam turbine high-pressure and low-pressure rotor displacement. The optimized displacement measurement detects rotor imbalance and misalignment, while dual redundant outputs ensure critical data reaches plant DCS and turbine protection systems. This supports compliance with grid reliability requirements.
• Marine (LNG Carrier Propulsion Shafts): Installed in LNG carriers to monitor propulsion shaft displacement and vibration. The module’s wide temperature range withstands cryogenic-induced ambient temperature fluctuations in LNG cargo holds, while its compact size fits within the limited space of ship engine rooms. Data integrates with shipboard navigation and control systems.
• Mining (SAG Mill Pinion Shafts): Used in mining SAG (Semi-Autogenous Grinding) mills to monitor pinion shaft displacement—a key indicator of gear alignment and bearing health. The module’s robust design withstands dust, vibration, and temperature extremes in underground and surface mining operations. Compatible with Bently 3300 XL proximity probes for reliable, long-term operation.
• Aerospace (Jet Engine Test Stands): Installed in jet engine test stands to monitor engine shaft displacement during ground testing and certification. The high accuracy (±0.15% for displacement) ensures compliance with strict aerospace quality standards, while EMI/RFI shielding prevents interference from test stand instrumentation and radar systems.
• Chemical Processing (Reactor Agitator Shafts): Deployed in chemical reactors to monitor agitator shaft displacement, which indicates bearing wear, impeller imbalance, or seal degradation. The module’s compatibility with proximity probes allows non-intrusive monitoring of shafts in corrosive or high-pressure reactor environments. Displacement alerts prevent reactor leaks and product contamination.