Bently Nevada 3500/45 176449-04 Differential Expansion/Axial Position Monitor

Function Features

• Dual Core Parameter Monitoring: The module focuses on simultaneous monitoring of differential expansion and axial position of rotating machinery. It can handle static displacement, 1X/2X rotational speed components and overall vibration parameters at the same time, meeting the full-dimensional condition evaluation needs of rotating machinery.
• Strong Sensor Compatibility: It achieves high-precision signal matching with Bently 3300XL series eddy current probes and can also adapt to multiple common industrial transducers. This compatibility eliminates the need for additional signal conversion devices and reduces the complexity of system configuration.
• Intelligent Alarm and Redundant Protection: It supports two-level alarm settings of Alert and Danger, with delay triggering and locking functions to avoid false alarms. In TMR configuration, it uses an inter-module comparison redundancy voting mechanism. A single point of failure will not affect the overall protection function of the system, ensuring the reliability of alarm signals.
• Superior Anti-interference Performance: It adopts patented CableLoc technology to effectively suppress RFI and EMI interference. It can maintain stable signal transmission without additional shielding measures, ensuring the accuracy of monitoring data in complex electromagnetic environments.
• Powerful Data Analysis and Communication: It has built-in spectrum analysis and waveform capture functions, and supports FFT algorithm to accurately locate fault frequencies and assist in fault diagnosis. It integrates multiple industrial communication protocols and supports historical data traceback and trend analysis, providing data support for equipment health assessment.
• Convenient Hot-swappable Design: It adopts a modular structure suitable for 3500 series rack installation and supports hot-swapping. Maintenance personnel can replace the module without shutting down the entire system, which improves maintenance efficiency and reduces production losses caused by maintenance downtime.

Application Scenarios

• Steam Turbines in Power Industry: It is widely used in coal-fired and gas-fired power plants to monitor the axial displacement and differential expansion data of steam turbine rotors in real time. When the data exceeds the dangerous threshold, it triggers a shutdown protection immediately to prevent friction damage between the rotor and the cylinder. It also transmits data to professional software for trend analysis to assist in formulating maintenance plans.
• Compressors in Petrochemical Industry: In refineries and LNG receiving stations, it manages centrifugal compressor clusters in a centralized way. It collects displacement signals of multiple compressors and pushes the data to the enterprise ERP system through the Modbus TCP protocol, realizing the correlation analysis of equipment health status and production efficiency and optimizing the allocation of maintenance resources.
• Rolling Mills in Metallurgical Industry: In the hot rolling production lines of steel mills, it connects to the eddy current probes on the bearing seats of rolling mills to collect high-frequency vibration and axial displacement data in real time. It uses FFT spectrum analysis to identify early signs of faults such as gear wear and bearing damage, avoiding unplanned downtime of the production line.
• Wind Turbines in Wind Power Industry: It is applied to onshore and offshore wind farms as part of the main control module of wind turbines. It monitors the position parameters of key components during the yaw and pitch processes of wind turbines and communicates with the SCADA system through Ethernet to ensure the stable and efficient operation of the wind farm.
• Marine Rotating Machinery: It is used to monitor rotating equipment such as marine turbines and pumps on offshore oil and gas drilling platforms. Its wide temperature operating range and strong anti-interference ability enable it to adapt to the harsh marine environment with high humidity and salt spray, ensuring the safe operation of marine equipment and the smooth progress of offshore operations.