Advanced Velocity Sensing for Reliable Machinery Condition Monitoring
The Bently Nevada 330500-02-05 Velomitor Piezoelectric Velocity Sensor is a premium industrial vibration sensor developed for continuous monitoring of absolute vibration velocity in rotating machinery. As part of the renowned 330500 Velomitor Series, this sensor combines a solid-state piezoelectric sensing element with integrated electronics to deliver accurate, repeatable velocity measurements while eliminating the mechanical wear associated with traditional moving-coil transducers.
The 330500-02-05 configuration is designed for demanding industrial applications requiring international hazardous-area certifications and dependable long-term operation. Its compact 316L stainless-steel housing, hermetically sealed connector, and rugged construction make it an ideal solution for condition monitoring systems installed on motors, pumps, compressors, turbines, gearboxes, and other critical rotating assets.
Designed for seamless integration with Bently Nevada machinery protection systems, the 330500-02-05 enables maintenance teams to detect imbalance, bearing wear, shaft misalignment, mechanical looseness, and other vibration-related issues before they develop into costly equipment failures.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330500-02-05 |
| Product Type | Velomitor Piezoelectric Velocity Sensor |
| Series | 330500 Velomitor Series |
| Sensor Technology | Integrating Piezoelectric Velocity Sensor |
| Output Type | Velocity |
| Sensitivity | 3.94 mV/mm/s (100 mV/in/s) ±5% |
| Velocity Measurement Range | Up to 1270 mm/s (50 in/s) Peak |
| Frequency Response | 4.5 Hz to 5 kHz (±3 dB) |
| Broadband Accuracy | 6 Hz to 2.5 kHz (±0.9 dB) |
| Resonant Frequency | Greater than 12 kHz |
| Output Bias Voltage | -12 ±3 VDC |
| Dynamic Output Impedance | Less than 2400 Ω |
| Connector | 2-Pin MIL-C-5015 Hermetically Sealed Connector |
| Housing Material | 316L Stainless Steel |
| Mounting Adapter | M8 × 1 |
| Operating Temperature | -55°C to +121°C |
| Maximum Cable Length | Up to 305 m (1000 ft) |
| Hazardous Area Certification | CSA, ATEX, IECEx (configuration dependent) |
| Dimensions | 25.3 mm (Diameter) × 63.2 mm (Height) |
| Weight | Approximately 142 g (0.142 kg) |
Industrial Applications
The 330500-02-05 is engineered for permanent installation in industrial machinery where precise casing vibration measurements are essential for maintaining operational reliability.
Typical applications include:
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Steam turbines
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Gas turbines
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Electric motors
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Centrifugal pumps
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Industrial compressors
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Cooling tower fans
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Gearboxes
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Blowers
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Process machinery
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Paper and pulp equipment
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Mining systems
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Petrochemical processing plants
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Power generation facilities
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Water and wastewater treatment equipment
Its solid-state design provides outstanding reliability under continuous operation, while its wide frequency response supports accurate monitoring of common machinery faults including imbalance, looseness, misalignment, resonance, and bearing deterioration.
Why Choose This Sensor?
The 330500-02-05 is built for facilities that demand dependable vibration monitoring with minimal maintenance and maximum equipment availability.
Key advantages include:
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Solid-state piezoelectric technology with no moving mechanical parts
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Direct velocity output for efficient machinery diagnostics
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Excellent low-frequency response for casing vibration monitoring
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Wide dynamic measurement range for diverse industrial applications
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Rugged 316L stainless-steel housing for harsh environments
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Hermetically sealed industrial connector for enhanced durability
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M8 × 1 mounting configuration simplifies installation
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Hazardous-area certifications for challenging operating environments
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Compatible with Bently Nevada machinery protection and monitoring systems
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Supports predictive maintenance strategies that reduce downtime and maintenance costs
Technical FAQs
1. What is the primary function of the 330500-02-05?
It measures absolute vibration velocity on machine casings and bearing housings to support machinery protection and predictive maintenance.
2. What sensing technology does this model use?
The sensor utilizes a solid-state piezoelectric sensing element with integrated electronic signal conditioning.
3. What does the "-02-05" configuration indicate?
The -02 option specifies the M8 × 1 mounting adapter, while the -05 option identifies a version supplied with multiple international hazardous-area approvals.
4. What is the sensor sensitivity?
The nominal sensitivity is 3.94 mV/mm/s (100 mV/in/s) with a tolerance of ±5%.
5. What frequency range does the sensor support?
It provides a frequency response of 4.5 Hz to 5 kHz (±3 dB), making it suitable for most rotating machinery monitoring applications.
6. Can the sensor operate in harsh industrial environments?
Yes. Its corrosion-resistant 316L stainless-steel housing and hermetically sealed connector are designed for demanding industrial conditions.
7. Which machines commonly use this sensor?
It is widely installed on motors, pumps, compressors, turbines, fans, blowers, and gearboxes equipped with rolling-element bearings.
8. Does the sensor require routine maintenance?
No. Because it contains no moving mechanical components, it offers excellent long-term reliability with very low maintenance requirements.
9. What are its dimensions and weight?
The sensor measures 25.3 mm in diameter × 63.2 mm in height and weighs approximately 142 g.
10. Why is the 330500-02-05 a popular choice for predictive maintenance?
Its stable velocity output, rugged industrial construction, hazardous-area approvals, and proven reliability enable maintenance teams to detect machinery faults early, improving equipment availability while reducing unplanned shutdowns.
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