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BENTLY 125736-01 Velocity Transducer
Product Overview
The BENTLY 125736-01 is a high-precision velocity transducer engineered for continuous vibration monitoring in industrial automation systems, specifically designed to convert mechanical vibrations from rotating equipment into electrical signals for analysis. As a critical component of Bently Nevada’s machinery protection portfolio, this transducer plays a pivotal role in predictive maintenance strategies across industries such as oil & gas, power generation, and manufacturing. The 125736-01 integrates seamlessly with BENTLY’s 3500 Series monitoring systems, delivering reliable velocity measurements to detect early signs of equipment degradation, such as bearing wear, imbalance, or misalignment, and enabling proactive maintenance to minimize unplanned downtime.
Featuring a rugged piezoelectric design, the BENTLY 125736-01 captures vibration velocities ranging from 0.1 to 100 in./sec (2.54 to 2540 mm/sec) with ±1% accuracy, ensuring precise data acquisition even in high-vibration environments. Its hermetically sealed stainless-steel enclosure (IP67-rated) and corrosion-resistant construction protect against dust, moisture, and harsh industrial conditions, making it suitable for both indoor and outdoor installations. The transducer’s low-output impedance and built-in signal conditioning minimize electromagnetic interference, while its compatibility with standard mounting configurations simplifies integration into existing monitoring networks.
In automation ecosystems, the 125736-01 serves as the front-end sensor for vibration analysis, feeding real-time velocity data to monitoring systems for trend analysis, alarm activation, and condition-based maintenance. Its wide frequency response (10 to 10,000 Hz) enables detection of various fault signatures, supporting comprehensive machinery health assessments. By providing actionable insights into equipment dynamics, this transducer enhances operational safety, extends component lifespan, and optimizes maintenance efficiency in mission-critical applications.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 125736-01 |
| Manufacturer | Bently Nevada |
| Product Type | 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 125736-01 ensures 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 fault diagnosis.
Rugged Industrial Design: With a hermetically sealed stainless-steel housing and IP67 rating, the transducer withstands harsh environments, including water immersion, dust, and corrosive gases. This durability makes it ideal for offshore platforms, refineries, and heavy manufacturing settings.
Easy System Integration: The 125736-01 features a standard threaded mount and 2-wire connectivity, simplifying installation in existing monitoring systems. It pairs seamlessly with BENTLY’s 3500 Series modules and third-party data acquisition systems, reducing integration complexity.
Reliable Signal Conditioning: Built-in signal conditioning and low-output impedance minimize noise interference, ensuring clean vibration signals for accurate analysis. The piezoelectric design eliminates moving parts, enhancing long-term reliability and reducing maintenance needs.
Wide Operational Range: Capable of operating from -40°C to +121°C, the transducer suits high-temperature applications like turbine casings and engine compartments. Its 1000 g shock resistance further ensures durability in high-impact environments.
Application Areas
The BENTLY 125736-01 is essential for vibration monitoring in industries where equipment reliability is critical:
- Oil & Gas: Monitors compressors, pumps, and turbines in refineries, pipelines, and offshore platforms to detect misalignment or bearing wear, preventing costly shutdowns.
- Power Generation: Installed on steam turbines, generators, and auxiliary equipment in thermal and nuclear plants to maintain grid stability and optimize energy production.
- Manufacturing: Used in high-speed rotating machinery such as motors, fans, and conveyor systems to ensure production continuity in automotive, chemical, and food processing facilities.
- Mining: Deployed on crushers, mills, and ventilation systems to monitor equipment health in harsh mining environments, reducing downtime and maintenance costs.
Specific applications include:
- Bearing Condition Monitoring: Detects early signs of bearing degradation by analyzing velocity waveforms, allowing proactive replacement before catastrophic failure.
- Imbalance Detection: Identifies rotational imbalance in turbines and pumps, enabling timely balancing to reduce mechanical stress.
- Structural Vibration Analysis: Measures casing vibrations in reciprocating engines to assess structural integrity and prevent fatigue failures.
Related Products
- BENTLY 3300 XL 8 mm Proximity Probe: Complements the 125736-01 by measuring shaft displacement, providing comprehensive vibration analysis when used alongside velocity monitoring.
- BENTLY 3500/42M Vibration Monitor: Processes signals from the 125736-01 to provide real-time vibration analysis, alarm triggering, and data trending.
- BENTLY 3500/22M Keyphasor Module: Supplies rotational reference signals for phase-locked vibration analysis with the 125736-01, enhancing fault diagnosis accuracy.
- BENTLY 330500 Proximity Probe System: A high-precision displacement sensor suite compatible with the 125736-01 for combined velocity and displacement monitoring.
- BENTLY 1900/65A Vibration Monitor: A compact solution for basic vibration analysis, suitable for integrating the 125736-01 in smaller systems.
- BENTLY 3500/05 Rack Enclosure: Houses the 3500/42M and other modules, providing a centralized platform for monitoring with the 125736-01.
Installation and Maintenance
Pre-installation Preparations:
Before installing the BENTLY 125736-01, ensure the mounting surface is flat and free of debris. Use a torque wrench to secure the transducer to the equipment (recommended torque: 11–14 N·m) to optimize vibration transfer. 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 125736-01, ensure the mounting surface is flat and free of debris. Use a torque wrench to secure the transducer to the equipment (recommended torque: 11–14 N·m) to optimize vibration transfer. 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 for loose connections, corrosion, or physical damage. Use a handheld vibrometer to compare 125736-01 readings with reference sensors and ensure consistency.
- Environmental Upkeep: Clean the transducer’s housing with a dry cloth or compressed air to remove dust and debris, especially in dusty environments. Avoid using solvents that may damage the enclosure.
- Periodic Calibration: Annually calibrate the 125736-01 using a vibration shaker table to maintain measurement accuracy. Document calibration results for compliance and traceability.
- Spare Parts Management: Store spare 125736-01 transducers in a temperature-controlled environment (10–30°C) with low humidity to preserve performance and ensure rapid replacement during emergencies.
Product Guarantee
Our company provides a 12-month quality warranty for the BENTLY 125736-01, 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 requirements, our global supply chain network ensures rapid delivery of the 125736-01 and related spare parts. Our technical support team is available 24/7 to assist with installation, calibration, and troubleshooting, delivering reliable solutions to maintain your industrial monitoring systems.
For inquiries, contact us via WhatsApp at +86 18859254943 or email at sales@ygplc.com.
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BENTLY 3500/45 176449-04 base
BENTLY 3500/65 145988-02 exchange
BENTLY 330876-03-50-00-00 DI module
BENTLY 3500/22M 138607-01 AI card
BENTLY 3500/93 135785-02C Pulse encoder
BENTLY 3500/92 136180-01 Remote module
BENTLY 3500/15 114M5330-01 Main processor
BENTLY 3500/77M 176449-07 Pulse input
BENTLY 3500/54 133396-01 Analog quantity
