Bently 350005-02-04-00-00-00

Technical Specifications

• Part Number: 350005-02-04-00-00-00
• Module Type: Dual-channel vibration transmitter (multi-parameter, analog output, independent signal conditioning)
• Primary Measurement Parameters: Simultaneous displacement (peak-to-peak), velocity (RMS), and acceleration (peak) per channel; user-selectable primary parameter per channel
• Measurement Ranges (Configurable per Channel): Displacement: 0–20 mm peak-to-peak (max); 0–5/10/15 mm peak-to-peak (selectable)
• Velocity: 0–100 mm/s RMS (max); 0–20/50/75 mm/s RMS (selectable)
• Acceleration: 0–200 g peak (max); 0–50/100/150 g peak (selectable)

Function Features

• Dual Independent Channels with Multi-Parameter Monitoring: Two fully isolated channels enable simultaneous monitoring of two machinery points, each supporting displacement, velocity, and acceleration measurements. This eliminates the need for multiple single-channel modules, reducing chassis space usage by 50% and simplifying system design for assets like turbines (monitoring both high-pressure and low-pressure rotors) or pumps (monitoring motor and impeller ends).
• Per-Channel Configurability: Each channel operates independently, allowing different measurement parameters, ranges, and filters to be set for each sensor. For example, Channel 1 can monitor shaft displacement (via proximity probe) on a turbine rotor, while Channel 2 monitors bearing acceleration (via piezoelectric sensor) on the same machine—tailoring data collection to specific component needs.
• Integrated Charge Amplifiers: Built-in, gain-adjustable charge amplifiers per channel enable direct connection to piezoelectric acceleration sensors, eliminating external signal conditioning hardware. This reduces wiring complexity, minimizes signal loss, and lowers overall system costs compared to modular setups with separate amplifiers.
• Redundant Analog Outputs: Four isolated 4–20 mA outputs (two per channel) provide redundant signal transmission to primary DCS and secondary monitoring systems. Galvanic isolation between channels and outputs prevents ground loops and cross-talk, ensuring data integrity in safety-critical applications like nuclear power or offshore oil.
• Granular Status Alerts: Four dedicated dry contacts deliver per-channel sensor fault and parameter threshold alerts. Thresholds are user-configurable via software or front-panel DIP switches, enabling targeted warnings for issues like excessive shaft displacement or high bearing acceleration—facilitating rapid troubleshooting and proactive maintenance.
• Programmable Filtering: Software-configurable low-pass and high-pass filters per channel allow users to isolate relevant frequency bands. For example, high-pass filtering can remove low-frequency noise from pipeline vibration, while low-pass filtering eliminates electrical interference from variable-frequency drives—ensuring accurate, actionable data.
• Seamless 3500 System Integration: Designed for 3500 chassis mounting, the module integrates with 3500 display modules, alarm logic solvers, and communication modules (Ethernet/Modbus/TCP). This modularity supports scalable system expansion, allowing users to add channels or parameters without replacing existing infrastructure.
• Extreme Environment Reliability: Wide temperature range (-40 °C to +70 °C) and robust shock/vibration resistance ensure operation in harsh conditions—from arctic oil fields and desert power plants to high-vibration mining equipment. The module maintains calibration and performance where standard monitoring devices fail.
• User-Friendly Operation: Front-panel LED indicators (power, channel activity, faults) and DIP switches for basic configuration enable on-site troubleshooting. Advanced settings are accessible via Bently’s 3500 Configuration Software, supporting both local and remote setup for distributed assets.
• Global Compliance: UL, CSA, and CE certifications meet international safety and EMC standards. Optional ATEX/IECEx certification extends use to explosive environments, making it suitable for global industrial projects without modifications.

Application Scenarios

• Power Generation (Steam Turbines): Installed in coal-fired and nuclear power plants to monitor steam turbine rotors. Channel 1 connects to a 3300 XL proximity probe for high-pressure rotor displacement, while Channel 2 uses a 330851 sensor for bearing acceleration. Redundant outputs send data to plant DCS and turbine protection systems, ensuring compliance with API 670 standards.
• Oil & Gas (Centrifugal Compressors): Deployed in offshore platforms and onshore refineries to monitor compressor casings and shafts. With ATEX certification, it operates in Zone 1 hazardous areas. Channel 1 monitors shaft displacement (proximity probe), Channel 2 tracks bearing velocity (velocity transducer), and threshold alerts trigger ESD system activation if limits are exceeded.
• Petrochemical (Ethylene Cracker Gearboxes): Used in ethylene plants to monitor large gearbox input and output shafts. Channel 1 (displacement) detects gear misalignment, while Channel 2 (acceleration) identifies gear tooth wear. Programmable filters isolate gear meshing frequencies, ensuring accurate fault detection and reducing unplanned downtime.
• Steel Manufacturing (Hot Rolling Mills): Installed in rolling mills to monitor work roll bearings and drive shafts. Channel 1 uses a velocity transducer for bearing vibration, Channel 2 employs an acceleration sensor for drive shaft resonance. The module’s EMI/RFI shielding resists interference from electric arc furnaces and rolling mill drives.
• Marine (LNG Carrier Propulsion Systems): Deployed in LNG carriers to monitor propulsion engine crankshafts and reduction gears. Channel 1 monitors crankshaft displacement (proximity probe), Channel 2 tracks gearbox acceleration (piezoelectric sensor). Wide temperature range withstands cryogenic-induced ambient fluctuations, and redundant outputs integrate with ship safety systems.
• Mining (SAG Mill Drives): Used in mining SAG mills to monitor pinion shafts and motor bearings. Channel 1 (displacement) detects pinion gear alignment issues, Channel 2 (acceleration) identifies motor bearing fatigue. Robust housing resists dust and vibration, while status alerts trigger maintenance before catastrophic drive failure.
• Aerospace (Jet Engine Test Stands): Installed in engine test facilities to monitor turbine blades and combustion chambers. Channel 1 (acceleration) captures high-frequency blade vibration, Channel 2 (displacement) tracks shaft movement during test cycles. High accuracy (±0.15%) meets aerospace certification requirements, and integrated filters remove test stand noise.
• Chemical Processing (Reactor Agitators): Deployed in chemical reactors to monitor agitator shafts and motor bearings. Channel 1 uses a proximity probe for shaft displacement (indicating seal wear), Channel 2 employs a velocity transducer for motor bearing vibration. PTFE-compatible wiring options resist corrosive environments, and threshold alerts prevent reactor leaks.
• Renewable Energy (Wind Turbine Gearboxes): Installed in wind farms to monitor gearbox planetary and sun gears. Channel 1 (acceleration) detects planetary gear wear, Channel 2 (displacement) tracks sun gear alignment. Data integrates with wind farm SCADA systems via 3500 communication modules, enabling remote condition monitoring and maintenance scheduling.