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BENTLY 125800-01 Vibration Velocity Transducer
Product Overview
The BENTLY 125800-01 is a high-performance vibration velocity transducer engineered for critical machinery health monitoring in industrial automation systems. As a core component of Bently Nevada’s vibration monitoring portfolio, this transducer converts mechanical vibrations into electrical signals, enabling precise measurement and analysis of equipment condition in turbines, compressors, and generators. The 125800-01 integrates seamlessly with BENTLY’s 3500 Series monitoring systems, delivering reliable velocity data to support predictive maintenance and prevent catastrophic failures across industries such as oil & gas, power generation, and manufacturing.
Designed with a rugged piezoelectric sensing element, the BENTLY 125800-01 captures vibration velocities ranging from 0.1 to 100 in./sec (2.54 to 2540 mm/sec) with ±1% accuracy, ensuring robust performance in high-vibration environments. Its hermetically sealed enclosure (IP67-rated) and stainless-steel construction protect against dust, moisture, and corrosive elements, making it suitable for harsh industrial settings. The transducer’s low-output impedance and built-in signal conditioning minimize electromagnetic interference, while its compatibility with standard 2-wire installations simplifies integration into existing monitoring networks.
In automation ecosystems, the 125800-01 serves as a front-end sensor for vibration analysis, feeding real-time velocity data to monitoring systems for trend analysis and alarm activation. Its wide frequency response (10 to 10,000 Hz) enables detection of various fault signatures, from bearing wear to mechanical imbalance. By providing actionable insights into equipment health, this transducer helps reduce unplanned downtime, extend component lifespan, and optimize maintenance schedules in mission-critical applications.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 125800-01 |
| Manufacturer | Bently Nevada |
| Product Type | Vibration Velocity Transducer |
| Sensing Element | Piezoelectric ceramic |
| Measurement Range | 0.1–100 in./sec (2.54–2540 mm/sec) |
| Frequency Response | 10–10,000 Hz |
| Output Signal | 2–10 V peak-to-peak (unamplified) |
| Sensitivity | 100 mV/(in./sec) (4 mV/(mm/sec)) |
| Physical Dimensions | 38 mm (diameter) × 76 mm (length) |
| Weight | 0.45 kg |
| Operating Temperature | -40°C to +121°C |
| Mounting | Threaded mounting (1/2-20 UNF or M14×1.5) |
| Environmental Rating | IP67, NEMA 4X |
| Shock Resistance | 1000 g (11 ms) |
Key Features and Advantages
High-Accuracy Vibration Measurement: The 125800-01 delivers precise velocity readings with ±1% accuracy, enabling early detection of subtle mechanical issues. Its wide frequency response captures both low-frequency imbalance and high-frequency bearing defects, supporting comprehensive machinery health analysis. This precision is critical for identifying developing faults before they escalate into costly failures.
Rugged Industrial Design: The transducer’s hermetically sealed stainless-steel housing and IP67 rating protect against harsh environmental factors, including water immersion, dust, and corrosive gases. This durability ensures reliable performance in challenging environments such as offshore platforms, refineries, and mining operations, where exposure to extreme conditions is common.
Easy System Integration: With a standard threaded mount and 2-wire connectivity, the 125800-01 simplifies installation in existing monitoring systems. It is fully compatible with BENTLY’s 3500 Series modules and third-party data acquisition systems, reducing integration complexity and lowering total cost of ownership. The transducer’s plug-and-play design minimizes setup time and configuration errors.
Low Noise and High Reliability: The built-in signal conditioning and low-output impedance of the 125800-01 minimize electromagnetic interference, ensuring clean vibration signals for accurate analysis. The piezoelectric design eliminates moving parts, reducing wear and enhancing long-term reliability, the transducer requires minimal maintenance, making it suitable for 24/7 industrial operations.
Wide Operational Range: Capable of operating from -40°C to +121°C, the 125800-01 suits both ambient and high-temperature applications, such as turbine casings and engine compartments. Its shock resistance (1000 g) further ensures durability in high-impact environments, making it a versatile choice for a wide range of industrial machinery.
Application Areas
The BENTLY 125800-01 is essential for vibration monitoring in industries where equipment reliability is critical:
- Oil & Gas: Deployed on compressors, pumps, and turbines in refineries, pipelines, and offshore platforms, the 125800-01 detects misalignment, bearing wear, or cavitation, preventing unplanned shutdowns and ensuring operational continuity. It supports safety and efficiency in upstream, midstream, and downstream operations.
- Power Generation: Installed on steam turbines, generators, and auxiliary equipment in thermal and nuclear plants, this transducer maintains grid stability by monitoring vibration levels. It helps optimize energy production by identifying issues that could impact generator performance or cause power output fluctuations.
- Manufacturing: Used in high-speed rotating machinery like motors, fans, and conveyor systems, the 125800-01 ensures production continuity in automotive, chemical, and food processing facilities. It enables proactive maintenance to avoid production delays and quality inconsistencies.
- Mining and Metals: Mounted on crushers, mills, and ventilation systems, the transducer monitors equipment health in harsh mining environments. It reduces downtime by detecting early signs of wear, allowing scheduled maintenance to replace components before failure.
Specific applications include:
- Bearing Condition Monitoring: The 125800-01 detects early signs of bearing degradation by analyzing velocity waveforms, enabling proactive replacement before catastrophic failure. This prevents unexpected downtime and reduces maintenance costs.
- Imbalance Detection: Identifies rotational imbalance in turbines and pumps, enabling timely balancing to reduce mechanical stress and extend component life. This improves energy efficiency and minimizes vibration-related damage.
- Structural Vibration Analysis: Measures casing vibrations in reciprocating engines to assess structural integrity and prevent fatigue failures. It supports predictive maintenance strategies to ensure equipment longevity.
Related Products
- BENTLY 3300 XL 8 mm Proximity Probe: A complementary displacement sensor for measuring shaft position, often used alongside the 125800-01 for comprehensive vibration analysis. It provides shaft displacement data to complement velocity measurements.
- BENTLY 3500/42M Vibration Monitor: Processes signals from the 125800-01 to provide real-time vibration analysis, alarm triggering, and data trending. It integrates seamlessly with the transducer for the complete monitoring solution.
- BENTLY 3500/22M Keyphasor Module: Supplies rotational reference signals for phase-locked vibration analysis with the 125800-01, enabling order tracking and precise fault localization.
- BENTLY 330500 Proximity Probe System: A high-precision displacement sensor suite compatible with the 125800-01 for combined velocity and displacement monitoring, enhancing the accuracy of machinery health assessments.
- BENTLY 1900/65A Vibration Monitor: A compact monitor for basic vibration analysis, suitable for integrating the 125800-01 in smaller systems or distributed monitoring applications.
- BENTLY 3500/05 Rack Enclosure: Houses the 3500 Series modules, including vibration monitors paired with the 125800-01, providing a centralized and protected environment for monitoring hardware.
Installation and Maintenance
Pre-installation Preparations:
Before installing the BENTLY 125800-01, verify that the mounting surface is flat, clean, and free of debris to ensure optimal vibration transfer. Use a torque wrench to secure the transducer to the equipment (recommended torque: 11–14 N·m), and ensure the mounting location is representative of the machinery’s vibration characteristics. Route shielded cables away from high-voltage lines to minimize electromagnetic interference, and connect the transducer to the monitoring system using a 2-wire configuration. Calibrate the system with a known vibration source to validate measurement accuracy before commissioning.
Before installing the BENTLY 125800-01, verify that the mounting surface is flat, clean, and free of debris to ensure optimal vibration transfer. Use a torque wrench to secure the transducer to the equipment (recommended torque: 11–14 N·m), and ensure the mounting location is representative of the machinery’s vibration characteristics. Route shielded cables away from high-voltage lines to minimize electromagnetic interference, and connect the transducer to the monitoring system using a 2-wire configuration. Calibrate the system with a known vibration source to validate measurement accuracy before commissioning.
Maintenance Suggestions:
- Routine Inspections: Perform quarterly visual checks of the 125800-01 for loose connections, corrosion, or physical damage. Use a handheld vibrometer to compare the transducer’s readings with reference sensors and ensure consistency. Document any deviations for further analysis.
- Environmental Cleaning: Remove dust, debris, and contaminants from the transducer’s housing using a dry cloth or compressed air, especially in dusty or dirty environments. Avoid using solvents that may damage the enclosure or sensing element.
- Periodic Calibration: Annually calibrate the 125800-01 using a vibration shaker table to maintain measurement accuracy. Compare output signals against certified reference standards and adjust as needed. Maintain detailed calibration records for compliance and traceability.
- Spare Parts Management: Store spare 125800-01 transducers in a controlled environment (10–30°C, humidity <50%) to preserve performance. Rotate inventory regularly and test spares periodically to ensure functionality during emergency replacements.
Product Guarantee
Our company provides a 12-month quality warranty for the BENTLY 125800-01, covering hardware defects under normal use. In the event of abnormal performance or functional failure, we offer prompt replacement services to minimize downtime. For discontinued models or urgent demands, our global supply chain network ensures rapid response to customer needs for scarce spare parts. Our technical support team is available 24/7 to assist with installation, calibration, and troubleshooting, delivering reliable services to support the continuous and stable operation of industrial systems.
For inquiries, contact us via WhatsApp at +86 18859254943 or email at sales@ygplc.com.
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