Bently Nevada 3300/25 Velomitor Piezoelectric Velocity Sensor | API 670 Certified | Industrial Vibration Monitoring

Bently Nevada 3300/25 Velomitor Velocity Sensor (Industrial-Grade Vibration Monitoring Solution)

The Bently Nevada 3300/25-05-13-15-00-01-03-00 Velomitor is a high-performance piezoelectric velocity sensor engineered for critical rotating machinery vibration monitoring. Through self-generating piezoelectric technology and precision signal conditioning, it delivers real-time velocity measurements for predictive maintenance, machinery protection, and condition monitoring systems.

Designed for harsh industrial environments including power generation, oil & gas, petrochemical plants, steel mills, and heavy manufacturing facilities, this sensor addresses challenges such as unexpected equipment failures, inadequate vibration data accuracy, installation complexity in extreme temperatures, and compliance with international machinery protection standards.

With API 670 certification, rugged construction, and field-proven reliability, the 3300/25 Velomitor is trusted by maintenance engineers, reliability teams, OEM integrators, and plant operators worldwide. Contact our application engineers for configuration guidance, technical datasheets, and project quotations.

Core Features & Advantages

Self-Generating Piezoelectric Design
No external power required for signal generation. The piezoelectric element converts mechanical vibration directly into electrical signals, ensuring intrinsic safety and simplified wiring in hazardous areas.

Wide Frequency Response (10-1000 Hz)
Captures critical vibration signatures across low-speed to high-speed rotating equipment, enabling detection of imbalance, misalignment, bearing defects, and resonance conditions.

Extended Temperature Range (-50°C to +120°C)
Operates reliably in extreme ambient conditions—from arctic outdoor installations to high-temperature turbine casings—without signal degradation or calibration drift.

API 670 Certified for Machinery Protection
Meets stringent requirements of API Standard 670 for vibration, axial position, and bearing temperature monitoring in petroleum, chemical, and gas industry services, ensuring regulatory compliance and insurance acceptance.

Rugged Industrial Construction
Hermetically sealed stainless steel housing with integral cable connection resists moisture, oil, chemical exposure, and mechanical shock, extending sensor lifespan in demanding environments.

Plug-and-Play Integration
Compatible with Bently Nevada 3300 XL monitoring systems, DCS platforms, and third-party vibration analyzers via standard 4-20mA or voltage output interfaces, reducing commissioning time.

Typical Application Scenarios

This sensor is ideal for applications requiring continuous vibration monitoring, early fault detection, and compliance with machinery protection standards, especially in:

Power Generation & Turbomachinery
Monitor steam turbines, gas turbines, generators, and compressors in power plants. Detect rotor imbalance, blade fouling, and bearing wear before catastrophic failure, minimizing unplanned outages.

Oil & Gas Production and Refining
Ensure safe operation of centrifugal pumps, reciprocating compressors, and rotating equipment in upstream, midstream, and downstream facilities. Meet API 670 requirements for critical machinery protection systems.

Petrochemical & Chemical Processing
Protect high-value process pumps, blowers, and agitators from vibration-induced failures. Integrate with plant-wide condition monitoring systems for predictive maintenance scheduling.

Steel, Mining & Heavy Industry
Monitor crushers, mills, conveyors, and large motors in harsh, high-vibration environments. Reduce maintenance costs and extend equipment life through early anomaly detection.

Marine Propulsion & Offshore Platforms
Withstand corrosive saltwater environments and extreme temperature swings on vessels and offshore rigs, providing reliable vibration data for propulsion systems and auxiliary machinery.

Technical Parameters & Selection Guide

To facilitate engineering design and sensor selection, we provide standardized specifications and customization options for diverse project requirements.

Key Specifications:

• Model Number: 3300/25-05-13-15-00-01-03-00
• Part Number: 72626
• Sensor Type: Piezoelectric Velocity Transducer (Velomitor)
• Frequency Range: 10 Hz to 1000 Hz
• Operating Temperature: -50°C to +120°C (-58°F to +248°F)
• Sensitivity: Typically 100 mV/in/s (consult datasheet for exact calibration)
• Output Signal: Velocity proportional voltage
• Housing Material: Stainless steel, hermetically sealed
• Mounting: Stud mount (M10 or 3/8"-24 UNF thread options)
• Cable Connection: Integral armored cable or connector type (specify at order)
• Certification: API 670 compliant
• Protection Rating: IP67 (dust-tight, temporary immersion)

Selection Recommendations:
When selecting a velocity sensor, consider: maximum vibration amplitude expected, mounting surface temperature, required frequency range, compatibility with existing monitoring systems, and environmental exposure (moisture, chemicals, EMI). For assistance, provide equipment type, operating speed (RPM), mounting location, ambient conditions, and monitoring system interface requirements. Our engineers will recommend the optimal sensor configuration and accessories.

Extended Capabilities

System Integration & Accessories:

• Compatible with Bently Nevada 3300 XL Proximitor systems and 3500 rack monitoring platforms
• Optional extension cables, junction boxes, and mounting studs available
• Supports integration with SCADA, DCS, and PLC systems via analog or digital protocols
• Calibration certificates and traceability documentation provided upon request

Customization Options:

• Cable length and termination type (pigtail, connector, junction box)
• Special temperature ratings or hazardous area certifications (ATEX, IECEx)
• Custom sensitivity ranges for specific application requirements

Delivery, Service & Quality Assurance

Lead Time: Standard catalog items typically ship within 3-5 business days; custom configurations require 2-4 weeks depending on specifications.

Warranty: 12-month manufacturer warranty covering defects in materials and workmanship under normal operating conditions.

Technical Support: Remote application engineering assistance, installation guidance, and troubleshooting support available. On-site commissioning and training services can be arranged for large projects (region-dependent).

Documentation: Each sensor ships with product datasheet, dimensional drawings, wiring diagrams, calibration certificate, and installation/operation manual in English. Additional language versions available upon request.

Quality & Compliance: Manufactured to ISO 9001 standards. API 670 certification ensures compliance with international machinery protection requirements for critical service applications.

Frequently Asked Questions (FAQ)

Q: How does the Bently Nevada 3300/25 Velomitor velocity sensor integrate with existing vibration monitoring systems?
A: The sensor outputs a velocity-proportional analog signal compatible with most monitoring systems. It connects directly to Bently Nevada 3300 XL or 3500 series monitors, or to third-party systems via standard signal conditioning modules. Verify input impedance and signal range compatibility; our engineers can assist with interface specifications.

Q: What is the maximum operating temperature for this velocity sensor, and can it be used in high-temperature turbine applications?
A: The standard 3300/25 operates from -50°C to +120°C. For mounting surfaces exceeding 120°C (such as turbine casings), use thermal standoffs, heat sinks, or extension studs to isolate the sensor from extreme heat. Consult factory for high-temperature variants if required.

Q: Is the Bently Nevada Velomitor sensor suitable for hazardous area installations (explosive atmospheres)?
A: The standard model is not intrinsically safe certified. For hazardous locations (Class I Div 1/2, ATEX Zone 1/2), specify explosion-proof or intrinsically safe versions at time of order, or use approved barriers and enclosures. Contact us for certification documentation and compliance guidance.

Q: What mounting hardware and accessories are included with the sensor?
A: The sensor typically ships with a mounting stud. Additional accessories such as extension cables, junction boxes, mounting adapters, and calibration certificates are available separately. Specify requirements at order to ensure complete system delivery.

Q: Can this velocity sensor detect low-frequency vibrations below 10 Hz, such as from slow-speed equipment?
A: The 3300/25 Velomitor is optimized for 10-1000 Hz. For low-frequency monitoring (<10 Hz) on slow-speed machinery (e.g., large mills, kilns), consider accelerometer-based sensors or proximity probes. Our team can recommend the best sensor type based on equipment speed and fault signatures of interest.

Q: How often does the Bently Nevada 3300/25 sensor require recalibration, and what is the expected service life?
A: Piezoelectric sensors are highly stable; recalibration intervals of 2-5 years are typical, depending on operating conditions and industry standards. Expected service life exceeds 10 years in normal industrial environments. Periodic verification against a reference standard is recommended for critical safety applications.

Request a Quote & Technical Support

To receive a detailed selection proposal, pricing, or technical assistance, please provide the following information: project name, application type (equipment and operating conditions), required quantity, mounting environment (temperature, vibration levels), existing monitoring system interface, and delivery timeline. Our application engineers will respond with tailored recommendations and a formal quotation within 24 hours.

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