3500/42M 140734-02大卡
Product Name
The 3500/42M 140734-02 module is a high-performance vibration monitoring module, part of Bently Nevada’s 3500 machinery protection system, designed for continuous condition monitoring of rotating equipment. The “3500” identifies it as part of Bently Nevada’s flagship 3500 series, renowned for industrial machinery protection; “42M” specifies its configuration as a 4-channel monitoring module with advanced vibration analysis capabilities, where “M” denotes enhanced memory for data logging. The “140734-02” is the unique part number, indicating hardware revision and compatibility with various sensors (accelerometers, velocity transducers, proximity probes) used in machinery health monitoring. This module serves as a critical component in detecting early signs of equipment degradation (e.g., bearing wear, misalignment, imbalance) in turbines, compressors, and pumps, enabling predictive maintenance in power plants, refineries, and chemical facilities.
Product Description
Gas Turbine Condition Monitoring
In a 50MW gas turbine power plant, the 3500/42M 140734-02 module monitors 4 critical vibration points: turbine shaft radial vibration (X/Y axes) and bearing housing vibration (horizontal/vertical). It processes signals from proximity probes (measuring shaft displacement up to 254μm) and accelerometers (capturing 0.1-10kHz vibration frequencies), converting them into actionable data such as peak-to-peak amplitude, velocity, and acceleration.
When turbine shaft vibration exceeds the alert threshold (125μm peak-to-peak), the module triggers an alarm within 10ms, logging the event with a 1ms timestamp and 2 seconds of pre-alarm data for post-analysis. Its advanced FFT (Fast Fourier Transform) analysis (up to 1600 lines of resolution) identifies specific fault frequencies—for example, detecting a 2× rotational frequency spike indicative of misalignment, allowing maintenance to be scheduled during planned outages. The module integrates with the plant’s DCS via Modbus TCP/IP, transmitting real-time vibration data (updated every 100ms) while storing 30 days of 1-minute trend data in non-volatile memory. In the turbine’s high-temperature environment (up to 65°C), its thermal stability ensures measurement accuracy drift <0.5% per 10°C, maintaining reliable monitoring during start-stop cycles.
