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Product Introduction
The Bently Nevada 330703-000-050-10 3300 XL 11 mm Proximity Probe is a high-precision, non-contact displacement sensor designed for continuous monitoring of shaft vibration, rotor position, and dynamic movement in critical rotating machinery. Part of the renowned 3300 XL series, it delivers reliable and stable measurements even under extreme industrial conditions. Its rugged stainless-steel body and ceramic sensing tip provide long-term durability and exceptional performance for turbines, compressors, motors, and pumps. The probe’s design ensures seamless integration with Bently Nevada 3300 XL Proximitor® sensors, enabling predictive maintenance and early fault detection across a wide range of heavy-duty applications.
Product Specifications
| Parameter | Description |
|---|---|
| Model Number | 330703-000-050-10 |
| Series | 3300 XL Proximity Probes |
| Measurement Range | 11 mm non-contact displacement |
| Sensitivity | 5 mV/µm nominal |
| Frequency Response | DC to 10 kHz |
| Linearity | ±1 % of full-scale |
| Insulation Resistance | >100 MΩ at 500 V DC |
| Dielectric Strength | 2.5 kV AC for 1 minute |
| Operating Temperature | –40 °C to +120 °C |
| Housing Material | Stainless steel |
| Probe Tip Material | High-density ceramic |
| Shock/Vibration Rating | Up to 20 g, 10–2000 Hz |
| Output Compatibility | Bently Nevada 3300 XL Proximitor® sensors |
| Mounting Style | Precision threaded mounting |
| Total Length | 1.0 m |
| Weight | 0.07 kg |
Applications
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Turbomachinery Monitoring – Detects shaft vibration and axial or radial displacement for turbines, compressors, and large pumps.
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Power Generation – Provides real-time feedback for generator shaft monitoring to prevent unplanned outages.
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Petrochemical Equipment – Ensures reliability of refinery compressors and process pumps operating in harsh environments.
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Industrial Motors – Integrates with predictive maintenance systems to detect imbalance or misalignment.
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Rotating Equipment Diagnostics – Aids in troubleshooting rotor bow, bearing wear, and shaft whip in continuous-duty machinery.
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System Upgrades and Retrofits – Compatible with existing Bently Nevada infrastructure, simplifying modernization projects.
Advantages
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High Accuracy and Stability – Maintains ±1 % linearity over its entire measurement range.
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Rugged Industrial Design – Stainless-steel housing and ceramic sensing tip withstand corrosive or abrasive environments.
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Excellent EMI Shielding – Multi-layered cable and probe construction reduce interference in electrically noisy areas.
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Predictive Maintenance Ready – Enables early detection of vibration issues to minimize downtime and maintenance costs.
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Easy Integration – Fully compatible with 3300 XL Proximitor® sensors for plug-and-play operation.
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Wide Operating Temperature Range – Designed for dependable performance in extreme industrial conditions.
Frequently Asked Questions (FAQ)
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What sensing technology does this probe use?
It uses eddy-current technology to measure the distance between the probe tip and the rotating shaft surface. -
Is the probe fully compatible with all 3300 XL Proximitor® sensors?
Yes, it is factory-calibrated for seamless integration with any 3300 XL Proximitor® within the specified range. -
What is the typical output sensitivity of the probe?
The nominal sensitivity is 5 mV/µm of shaft movement. -
Can it withstand high vibration environments found in large turbines?
Yes, it is rated for continuous exposure up to 20 g within 10–2000 Hz. -
Does the probe require field calibration after installation?
No, it comes pre-calibrated; only periodic system checks are recommended. -
How is electromagnetic interference minimized?
The probe employs multi-layer shielding and precision connectors to protect signal integrity. -
Can the probe measure both radial and axial shaft motion?
Yes, with appropriate mounting orientation, it can measure either radial or axial displacement. -
What target materials are best for accurate measurement?
Conductive metallic targets, such as steel or similar ferromagnetic alloys, provide optimal performance. -
Is it suitable for 24/7 continuous operation in critical equipment?
Yes, it is designed for permanent installation and continuous monitoring in demanding environments. -
What is the recommended operating temperature range for accurate measurements?
It performs reliably from –40 °C to +120 °C.
Related Models – Same Series
| Model | Description |
|---|---|
| 330703-000-040-50-11-00 | 3300 XL 11 mm probe, reverse-mount configuration |
| 330703-000-040-90-01-00 | 3300 XL 11 mm probe with extended cable length |
| 330703-000-040-90-01-CN | 3300 XL 11 mm probe with CN regional configuration |
| 330701-00-10-10-11-05 | 3300 XL 11 mm probe, standard configuration |
| 330702-00-30-10-02-00 | 3300 XL 8 mm proximity probe |
| 330702-00-30-50-01-05 | 3300 XL 8 mm probe with long cable |
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| 330300-90-00 | High-Temperature Proximitor® Sensor |
| 330302-000-050-10-90-01-00 | High-Temperature Proximity Probe |
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