Industrial-Grade Vibration Monitoring for Critical Rotating Equipment
The Bently Nevada 330500-00-05 Velomitor Piezoelectric Velocity Sensor is a high-performance vibration sensor engineered for continuous machinery condition monitoring. Designed specifically for rotating equipment equipped with rolling-element bearings, this sensor accurately measures absolute vibration velocity from bearing housings, machine casings, and structural surfaces. It utilizes solid-state piezoelectric technology with integrated electronics to deliver dependable measurements in harsh industrial environments.
Unlike traditional moving-coil velocity transducers, the 330500 series contains no moving mechanical components, significantly reducing wear and extending operational lifespan. Its rugged design makes it an excellent choice for predictive maintenance programs and machinery protection systems.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Product Type | Velomitor Piezoelectric Velocity Sensor |
| Model Number | 330500-00-05 |
| Sensor Technology | Integrating piezoelectric accelerometer |
| Measurement Type | Absolute vibration velocity |
| Sensitivity | 3.94 mV/mm/s (100 mV/in/s) ±5% |
| Frequency Response | 4.5 Hz to 5 kHz (±3 dB) |
| Secondary Frequency Range | 6 Hz to 2.5 kHz (±0.9 dB) |
| Peak Velocity Range | Up to 1270 mm/s (50 in/s) |
| Maximum Cable Length | 305 m (1000 ft) |
| Connector Type | 2-pin MIL-C-5015 hermetically sealed connector |
| Housing Material | 316L stainless steel |
| Operating Temperature | -55°C to +121°C |
| Shock Resistance | Up to 5000 g peak |
| Humidity Resistance | Up to 100% non-submerged |
| Dimensions | 25.3 mm diameter × 63.2 mm height |
| Weight | Approx. 142 g |
Industrial Applications
The 330500-00-05 is extensively deployed in machinery health monitoring programs across multiple industries.
Typical applications include:
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Steam turbine monitoring
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Gas turbine protection systems
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Industrial compressors
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Large centrifugal pumps
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Electric motors
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Cooling tower fans
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Blowers and ventilation systems
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Gearboxes
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Water treatment facilities
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Power generation plants
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Petrochemical processing facilities
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General rotating equipment condition monitoring
Its ability to provide continuous vibration data allows maintenance teams to identify equipment deterioration before failures occur.
Key Advantages
Solid-State Reliability
No moving internal components significantly reduce mechanical wear and increase service life.
Excellent Measurement Stability
Delivers accurate velocity measurements across a wide frequency range suitable for predictive maintenance applications.
Extreme Environmental Durability
316L stainless steel construction and hermetic sealing support operation in harsh industrial environments.
Flexible Installation
Can be mounted vertically, horizontally, or at various angles without performance degradation.
Long Cable Capability
Supports cable runs up to 305 meters without significant signal loss.
Supports Predictive Maintenance Programs
Helps facilities reduce unplanned downtime and extend equipment lifespan through early fault detection.
Technical FAQs
1. What does the 330500-00-05 measure?
It measures absolute vibration velocity from machine housings, bearing casings, and structures.
2. What type of sensor technology does it use?
It uses an integrating piezoelectric accelerometer with embedded electronics.
3. Is it suitable for continuous monitoring?
Yes. It is specifically designed for permanent industrial condition monitoring applications.
4. Does it contain moving mechanical components?
No. It uses solid-state technology without moving parts.
5. Which machines commonly use this sensor?
Turbines, compressors, motors, pumps, fans, and gearboxes.
6. Can it operate in high-temperature environments?
Yes. It supports temperatures from -55°C to +121°C.
7. Is it resistant to industrial shock and vibration?
Yes. It is rated for up to 5000 g peak shock survivability.
8. Can it be installed in hazardous environments?
Certain configurations carry hazardous area approvals depending on certification requirements.
9. Is professional installation recommended?
Yes. Proper mounting and integration are essential for accurate measurements.
10. Is the 330500 series still widely used?
Yes. It remains a popular vibration monitoring solution in predictive maintenance programs worldwide.
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