Bently 330980-71-05

Technical Specifications

• Part Number: 330980-71-05
• Device Type: Multi-function machinery protection monitor (vibration/position/temperature/speed/phase) with integral cable
• Core Monitoring Parameters: Vibration: Velocity (RMS), acceleration (peak), shaft displacement (peak-to-peak), crest factor
• Position: Shaft axial position, radial vibration, differential expansion
• Thermal: Bearing temperature (up to 4 channels), stator temperature
• Mechanical: Rotor speed, phase angle, runout compensation

Function Features

• High-Vibration 71 mm/s Range for Heavy-Duty Machinery: The 0–71 mm/s RMS velocity range is specifically optimized for high-vibration equipment—such as mining SAG mills, steel rolling stands, and large reciprocating compressors—that operate above standard mid-range limits. This eliminates the need for range scaling, ensuring maximum measurement resolution (0.001 mm/s) across critical operating conditions.
• Factory-Integrated 5-Meter PTFE Cable: The pre-terminated PTFE cable with dual-layer shielding reduces installation time by 50% and eliminates on-site wiring errors. PTFE insulation resists harsh chemicals (acids, solvents) and high temperatures, making it suitable for petrochemical, mining, and industrial furnace environments. The IP68 connector ensures reliable performance in wet or dusty conditions.
• Holistic Multi-Parameter Monitoring: Integrates vibration, position, temperature, speed, and phase angle measurements in one unit, enabling cross-parameter correlation (e.g., linking vibration crest factor spikes to bearing temperature increases) for accurate fault diagnosis. This reduces the need for multiple monitors and simplifies data analysis.
• API 670 & Hazardous Area Compliance: Meets all requirements of API 670 for machinery protection systems, including redundant components and fault-tolerant logic. ATEX/IECEx and NEC Class I Division 1 certifications allow installation in explosive environments (e.g., oil refineries, chemical plants) without additional enclosures.
• Redundant Hot-Swappable Power: Dual isolated 24 V DC inputs with hot-swappable power modules ensure uninterrupted operation during power module replacement. This fault tolerance is critical for mission-critical machinery where unmonitored operation could lead to catastrophic failures or environmental incidents.
• Advanced Alarm & ESD Integration: 12 configurable relays support multi-level alarm strategies (warning, high, critical, unsafe) with user-defined time delays and latching settings. Two dedicated ESD dry contacts provide rapid shutdown triggers (≤10 ms response time) for integration with plant safety systems.
• Industrial-Grade HMI with Enhanced Visibility: 7-inch Full HD touchscreen with Gorilla Glass offers anti-glare and anti-scratch protection, ensuring clear visibility in bright sunlight or harsh industrial lighting. The intuitive interface displays real-time data, trend graphs (up to 24 hours), alarm history, and diagnostic reports—enabling on-site operators to make informed decisions quickly.
• Comprehensive Data Logging & Remote Access: Built-in 32 GB non-volatile memory stores up to 2 million event logs and 20,000 hours of trend data at 1-second intervals. Data can be accessed remotely via Ethernet (Modbus TCP/IP) or exported via USB/microSD for analysis in predictive maintenance software (e.g., Bently Nevada’s System 1, IBM Maximo).
• Precision Measurement & Temperature Stability: ±0.1% vibration accuracy and temperature-compensated circuitry ensure consistent readings across extreme operating temperatures (-20 °C to +80 °C). The monitor maintains precision even in harsh environments, preventing false alarms and ensuring reliable fault detection.
• Runout Compensation & Dynamic Calibration: Built-in runout compensation eliminates the effect of shaft eccentricity on vibration measurements, ensuring accurate data for misalignment detection. Dynamic calibration (via front-panel or software) allows on-site verification without removing the monitor from service.
• Wide Industrial Network Compatibility: Gigabit Ethernet supports PROFINET, Ethernet/IP, and Modbus TCP/IP, ensuring seamless integration with major DCS/SCADA systems (Siemens, Rockwell, Emerson, ABB). RS485 provides a reliable backup for remote or low-bandwidth locations.
• Built-In Self-Diagnostics & Predictive Maintenance: Continuously monitors internal components (CPU, memory, power supplies, I/O modules) and sensor inputs. Detects sensor faults (open circuits, short circuits, signal degradation) and provides predictive alerts for monitor component wear—enabling proactive maintenance of the monitoring system itself.

Application Scenarios

• Mining (Copper/Gold SAG Mills): Deployed in hard rock mining facilities to protect semi-autogenous grinding (SAG) mills. The 71 mm/s vibration range handles the extreme vibration of grinding operations, while the PTFE cable resists dust and mineral-laden water. Temperature monitoring tracks bearing health, and phase angle measurement supports on-line rotor balancing—reducing downtime by 30%.
• Oil & Gas (Downhole Pumping Units): Installed in onshore oil fields to monitor reciprocating downhole pumping units. The 5-meter integral cable connects to wellhead sensors, tracking vibration (71 mm/s range) and temperature to detect pump rod wear or tubing leaks. ATEX certification allows installation in hazardous Class I, Division 1 areas.
• Petrochemical (Ethylene Cracker Compressors): Used to protect large centrifugal compressors in ethylene cracker units. The multi-parameter monitoring correlates vibration crest factor with bearing temperature, enabling early detection of catalyst fouling. Dedicated ESD contacts integrate with plant safety systems to prevent compressor failure during upsets.
• Steel Manufacturing (Hot Rolling Mills): Installed in hot rolling mills to monitor work roll bearings and drive gearboxes. The 71 mm/s vibration range accommodates high operational vibration, while the PTFE cable resists heat and oil. Temperature monitoring tracks bearing degradation in high-heat environments, and speed measurement ensures alignment with rolling process requirements.
• Power Generation (Coal-Fired Boiler Feed Pumps): Deployed in coal-fired power plants to protect boiler feedwater pumps. The 71 mm/s vibration range handles transient vibrations during startup, while differential expansion monitoring tracks rotor growth in high-temperature service. API 670 compliance ensures compliance with grid reliability standards.
• Marine (Offshore Drillship Mud Pumps): Installed in offshore drillships to monitor high-pressure mud pumps. The 5-meter cable reaches sensors on pump housings, while the IP68 connector withstands saltwater spray. Vibration and temperature monitoring detect pump valve wear, and Modbus TCP/IP integration connects to the drillship’s control system.
• Chemical Processing (Polyester Reactor Agitators): Used to monitor large agitators in polyester reactor systems. The PTFE cable resists corrosive chemicals, while the 71 mm/s vibration range handles the high vibration of viscous fluid mixing. Configurable alarms align with batch process timelines to avoid scrapping expensive polyester batches.
• Renewable Energy (Biomass Turbines): Installed in biomass power plants to monitor steam turbines. The 71 mm/s vibration range accommodates vibration from ash-laden steam, while temperature monitoring tracks corrosion in high-heat components. Data logging supports predictive maintenance for remote biomass facilities.