Precision Velocity Monitoring for Critical Rotating Equipment
The Bently Nevada 330500-02-01 Velomitor Piezo-Velocity Sensor is a high-performance industrial vibration sensor designed to measure absolute vibration velocity on bearing housings, machine casings, and structural components. Unlike traditional moving-coil velocity transducers, the 330500 Series utilizes a solid-state piezoelectric sensing element with integrated electronics, providing outstanding reliability, excellent frequency response, and long-term measurement stability.
The 330500-02-01 configuration is engineered for permanent installation in machinery condition monitoring systems, making it ideal for rotating equipment equipped with rolling-element bearings. Its compact stainless-steel construction, rugged sealed connector, and maintenance-free design ensure dependable operation in demanding industrial environments.
Whether installed on pumps, motors, compressors, fans, or turbines, the 330500-02-01 helps maintenance teams identify imbalance, misalignment, bearing deterioration, and mechanical looseness at an early stage, reducing downtime and extending equipment service life.
Product Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330500-02-01 |
| Product Type | Velomitor Piezo-Velocity Sensor |
| Series | 330500 Velomitor |
| Sensor Technology | Integrating Piezoelectric Velocity Sensor |
| Output Type | Velocity |
| Sensitivity | 3.94 mV/mm/s (100 mV/in/s) ±5% |
| Velocity 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 |
| Connector Type | 2-Pin MIL-C-5015 Hermetically Sealed Connector |
| Housing Material | 316L Stainless Steel |
| Mounting Thread | 3/8-24 UNF |
| Maximum Cable Length | 305 m (1000 ft) |
| Operating Temperature | -55°C to +121°C |
| Protection | Industrial Sealed Construction |
| Dimensions | 25.3 mm Diameter × 63.2 mm Height |
| Weight | Approximately 142 g (0.142 kg) |
Typical Applications
The 330500-02-01 is designed for continuous vibration monitoring across a broad range of industrial rotating machinery where vibration velocity provides an effective indication of mechanical health.
Typical applications include:
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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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Steam turbines
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Gas turbines
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Gearboxes
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Blowers
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Process machinery
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Paper mills
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Mining equipment
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Petrochemical plants
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Power generation facilities
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Water treatment systems
Its solid-state design eliminates the wear associated with conventional moving-coil velocity sensors, providing consistent performance even during long-term continuous operation.
Key Features & Benefits
Designed for demanding industrial environments, the 330500-02-01 delivers dependable vibration monitoring with minimal maintenance.
Key advantages include:
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Solid-state piezoelectric technology with no moving parts
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Direct velocity output simplifies machinery diagnostics
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Excellent low-frequency response for casing vibration measurement
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Wide dynamic measurement range
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Rugged 316L stainless-steel construction
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Hermetically sealed connector for harsh industrial environments
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Flexible mounting orientation without performance degradation
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Long cable capability for remote installations
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Compatible with Bently Nevada condition monitoring systems
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Supports predictive maintenance strategies that reduce unplanned downtime and maintenance costs
Technical FAQs
1. What is the primary function of the 330500-02-01?
It measures absolute vibration velocity on machine housings and bearing casings for machinery condition monitoring.
2. How does a Velomitor differ from an accelerometer?
A Velomitor internally integrates the acceleration signal and provides a direct velocity output, which is widely used for overall machinery vibration assessment.
3. What type of sensing technology does it use?
It utilizes a solid-state piezoelectric sensing element with integrated signal conditioning electronics.
4. What is the sensor sensitivity?
The nominal sensitivity is 3.94 mV/mm/s (100 mV/in/s).
5. What operating temperature range does it support?
The sensor operates from -55°C to +121°C.
6. Can the sensor be mounted in any orientation?
Yes. Because it contains no moving mechanical components, it can be installed vertically, horizontally, or at virtually any angle without affecting normal operation.
7. Which machinery is best suited for this sensor?
It is commonly installed on motors, pumps, compressors, turbines, fans, blowers, and gearboxes equipped with rolling-element bearings.
8. What connector does the sensor use?
The sensor features a rugged 2-pin MIL-C-5015 hermetically sealed connector.
9. What are the physical dimensions and weight?
The housing measures 25.3 mm in diameter × 63.2 mm in height and weighs approximately 142 g.
10. Why choose the 330500-02-01 for machinery monitoring?
Its maintenance-free solid-state construction, reliable velocity output, excellent frequency response, and durable industrial design make it an outstanding choice for continuous vibration monitoring and predictive maintenance programs.
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