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BENTLY 128275-01 Vibration Accelerometer
Product Overview ：BENTLY 128275-01
The BENTLY 128275-01 is a high-performance vibration accelerometer designed for critical machinery health monitoring in industrial automation systems. Engineered as part of Bently Nevada’s advanced sensor portfolio, this accelerometer converts mechanical vibrations into electrical signals for real-time analysis, enabling predictive maintenance and fault detection in turbines, compressors, and rotating equipment across industries such as oil & gas, power generation, and manufacturing. The 128275-01 integrates seamlessly with BENTLY’s 3500 Series monitoring systems, delivering precise acceleration measurements to support operational safety and efficiency.
Featuring a rugged piezoelectric design, the BENTLY 128275-01 captures vibration accelerations ranging from ±50 g to ±500 g with ±1% accuracy, ensuring reliable data acquisition even in high-vibration environments. Its hermetically sealed titanium 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 accelerometer’s low-noise output and built-in signal conditioning minimize interference, while its compatibility with standard 4–20 mA or voltage output configurations simplifies integration into existing monitoring networks.
In automation ecosystems, the 128275-01 serves as a front-end sensor for vibration analysis, feeding real-time acceleration data to monitoring systems for trend analysis and alarm activation. Its wide frequency response (0.5 to 10,000 Hz) enables detection of various fault signatures, from bearing wear to structural resonance. By providing actionable insights into equipment health, this accelerometer helps reduce unplanned downtime, extend component lifespan, and optimize maintenance schedules in mission-critical applications.
Technical Specifications ：BENTLY 128275-01
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 128275-01 |
| Manufacturer | Bently Nevada |
| Product Type | Vibration Accelerometer |
| Sensing Element | Piezoelectric ceramic |
| Measurement Range | ±50 g, ±100 g, ±250 g, ±500 g (user-selectable) |
| Frequency Response | 0.5–10,000 Hz (±3 dB) |
| Output Signal | 4–20 mA or 0–10 V DC (user-configurable) |
| Sensitivity | 100 mV/g (configurable per range) |
| Physical Dimensions | 38 mm (diameter) × 51 mm (length) |
| Weight | 0.3 kg |
| Operating Temperature | -54°C to +121°C |
| Mounting | Threaded mounting (1/4-28 UNF or M6×1) |
| Environmental Rating | IP67, NEMA 4X |
| Shock Resistance | 5000 g (11 ms) |
Key Features and Advantages ：BENTLY 128275-01
High-Accuracy Vibration Measurement: The 128275-01 provides precise acceleration readings with ±1% accuracy, enabling early detection of subtle mechanical issues. Its wide frequency response and selectable measurement ranges (up to ±500 g) accommodate both low-intensity and high-impact vibration monitoring, supporting comprehensive machinery health analysis.
Rugged Industrial Design: The accelerometer’s hermetically sealed titanium housing and IP67 rating protect against harsh environmental factors, including water immersion, extreme temperatures, and corrosive gases. This durability ensures reliable performance in offshore platforms, refineries, and other challenging industrial environments.
Flexible Integration Options: With user-configurable output signals (4–20 mA or 0–10 V DC) and multiple mounting options, the 128275-01 simplifies installation in existing monitoring systems. Its compatibility with BENTLY’s 3500 Series and third-party data acquisition systems reduces integration complexity and costs.
Low Noise and High Reliability: The built-in signal conditioning and low-output impedance minimize electromagnetic interference, ensuring clean vibration signals. The piezoelectric design eliminates moving parts, reducing wear and enhancing long-term reliability, even in continuous high-vibration applications.
Wide Operational Range: Capable of operating from -54°C to +121°C, the 128275-01 suits both ambient and high-temperature applications, such as turbine casings, engine compartments, and industrial ovens. Its high shock resistance (5000 g) further ensures durability in impact-prone environments.
Application Areas ：BENTLY 128275-01
The BENTLY 128275-01 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, bearing wear, or cavitation, preventing costly shutdowns and safety hazards.
- Power Generation: Installed on steam turbines, generators, and auxiliary equipment in thermal and nuclear plants to maintain grid stability, optimize energy production, and comply with safety regulations.
- Manufacturing: Used in high-speed rotating machinery like motors, fans, and conveyor systems to ensure production continuity and product quality in automotive, chemical, and food processing facilities.
- Mining and Metals: 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 acceleration waveforms, allowing proactive replacement before catastrophic failure.
- Structural Health Analysis: Measures vibration in industrial structures to assess resonance and fatigue, preventing structural failures in critical equipment.
- Machine Performance Optimization: Provides real-time acceleration data to optimize machine settings, reducing energy consumption and mechanical stress.
Related Products ：BENTLY 128275-01
- BENTLY 3300 XL 8 mm Proximity Probe: A complementary displacement sensor for measuring shaft position, often used alongside the 128275-01 for comprehensive vibration analysis.
- BENTLY 3500/42M Vibration Monitor: Processes signals from the 128275-01 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 128275-01.
- BENTLY 123M4610 Velocity Transducer: A velocity-measuring sensor that complements the 128275-01 for combined acceleration and velocity monitoring.
- BENTLY 3500/05 Rack Enclosure: Houses vibration monitoring modules (e.g., 3500/42M) for centralized data acquisition with the 128275-01.
- BENTLY 1900/65A Vibration Monitor: A compact monitor for basic vibration analysis, suitable for integrating the 128275-01 in smaller systems.
Installation and Maintenance ：BENTLY 128275-01
Pre-installation Preparations:
Before installing the BENTLY 128275-01, verify the mounting surface is flat, clean, and free of debris. Use a torque wrench to secure the accelerometer to the equipment (recommended torque: 5–7 N·m) to ensure optimal vibration transfer. Route shielded cables away from high-voltage lines to minimize electromagnetic interference, and configure the output signal (4–20 mA or 0–10 V DC) based on the monitoring system requirements. Calibrate the accelerometer with a known vibration source to ensure measurement accuracy before commissioning.
Before installing the BENTLY 128275-01, verify the mounting surface is flat, clean, and free of debris. Use a torque wrench to secure the accelerometer to the equipment (recommended torque: 5–7 N·m) to ensure optimal vibration transfer. Route shielded cables away from high-voltage lines to minimize electromagnetic interference, and configure the output signal (4–20 mA or 0–10 V DC) based on the monitoring system requirements. Calibrate the accelerometer with a known vibration source to ensure measurement accuracy before commissioning.
Maintenance Suggestions:
- Routine Inspections: Conduct quarterly visual checks for loose connections, corrosion, or physical damage to the 128275-01. Use a handheld vibrometer to compare readings with the accelerometer for calibration verification.
- Environmental Cleaning: Remove dust, debris, and corrosive residues from the accelerometer’s housing using a dry cloth or compressed air, especially in dusty or humid environments. Avoid using solvents that may damage the enclosure.
- Periodic Calibration: Annually calibrate the 128275-01 using a vibration shaker table to maintain measurement accuracy. Document calibration results and compare them against baseline data to identify performance drifts.
- Spare Parts Management: Store spare 128275-01 accelerometers in a temperature-controlled environment (10–30°C) with low humidity to preserve sensor performance. Test spares periodically to ensure functionality.
Product Guarantee ：BENTLY 128275-01
Our company provides a 12-month quality warranty for the BENTLY 128275-01, covering hardware defects under normal use. In the event of abnormal performance—such as signal inaccuracies or functional failures—we offer prompt replacement services to minimize downtime. For legacy or urgent requirements, our global supply chain network ensures rapid delivery of the 128275-01 and related spare parts. Our technical support team is available 24/7 to assist with installation, calibration, and troubleshooting, ensuring reliable operation to safeguard your industrial systems.
For inquiries, contact us via WhatsApp at +86 18859254943 or email at sales@ygplc.com.
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