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Product Introduction
The Bently Nevada 330709-000-040-50-02-00 3300 XL 11 mm Proximity Probe is a high-performance, non-contact vibration and displacement transducer specifically designed for industrial and power generation machinery monitoring applications. It belongs to the Bently Nevada 3300 XL Series, a globally recognized line of proximity measurement systems known for their exceptional accuracy, stability, and reliability in harsh operating environments.
The 330709-000-040-50-02-00 probe operates using the eddy current principle, generating an electromagnetic field that interacts with the conductive target surface, such as a rotating shaft. The resulting signal is converted into a proportional voltage that represents the gap or vibration amplitude. When combined with the 3300 XL Proximitor Sensor and extension cable, it provides precise real-time monitoring of shaft displacement and vibration, essential for predictive maintenance and machinery protection.
With its robust stainless-steel body, high thermal resistance, and superior EMI shielding, this probe ensures long-term measurement stability even in the most demanding industrial settings, such as turbines, compressors, and pumps. The model is compliant with API 670 standards, ensuring compatibility with global condition monitoring systems.
Technical Specifications
| Parameter | Description |
|---|---|
| Model | Bently Nevada 330709-000-040-50-02-00 |
| Series | 3300 XL 11 mm Proximity Probe |
| Measurement Principle | Eddy Current (non-contact displacement) |
| Nominal Sensitivity | 200 mV/mil (7.87 mV/μm) |
| Linear Range | 2.0 mm (80 mils) |
| Usable Measurement Range | 0.25 mm to 2.25 mm |
| Frequency Response | DC to 10 kHz (±3 dB) |
| Standard Target Material | AISI 4140 steel |
| Operating Temperature (Probe) | -35°C to +177°C |
| Storage Temperature | -55°C to +200°C |
| Temperature Coefficient | < 0.1% per °C |
| Probe Tip Diameter | 11 mm |
| Mounting Thread | M14 × 1.5 |
| Mounting Type | Front mount |
| Probe Body Material | Stainless steel, corrosion-resistant |
| Cable Type | Double-shielded coaxial cable |
| Electrical Isolation | Tip isolated from probe body |
| Compliance Standards | API 670, CE, CSA, ATEX (system dependent) |
| Weight | 0.25 kg |
| Total Length | 5.0 meters |
Product Applications
The Bently Nevada 330709-000-040-50-02-00 Proximity Probe is used across a broad range of rotating and reciprocating machinery where precise monitoring of vibration and shaft displacement is essential for safe and efficient operation. The probe’s non-contact measurement capability allows it to detect early signs of mechanical faults such as imbalance, misalignment, and bearing wear, preventing costly downtime.
Main applications include:
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Gas and Steam Turbines: Accurate shaft vibration and axial position measurement for rotor stability monitoring.
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Compressors: Continuous observation of shaft motion to detect misalignment, looseness, or early-stage bearing failure.
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Pumps: Non-contact displacement measurement to detect mechanical looseness or shaft deflection.
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Electric Motors and Generators: Reliable monitoring of rotor position to identify imbalance or eccentricity.
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Fans and Blowers: Detection of unbalance and resonance to optimize maintenance intervals.
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Gearboxes and Industrial Drives: Monitoring mechanical integrity and preventing catastrophic gear or bearing failures.
The probe’s durable design and wide operational range make it a preferred solution for critical machinery across oil & gas, petrochemical, power generation, and process industries.
Product Advantages
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High Precision: Delivers 200 mV/mil output with excellent linearity across the measurement range.
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Thermally Stable Design: Maintains accuracy from -35°C to +177°C, even in fluctuating thermal conditions.
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Superior EMI/RFI Immunity: Double-shielded cable ensures signal integrity in electrically noisy environments.
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Rugged Construction: Stainless steel body provides high corrosion resistance and mechanical durability.
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API 670 Compliance: Fully compatible with industry-standard machinery protection systems.
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Wide Frequency Response: Suitable for both low- and high-speed rotating machinery monitoring.
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Non-contact Measurement: Eliminates mechanical wear, reducing maintenance requirements.
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Flexible Installation: 5-meter cable supports integration into complex or space-limited machinery layouts.
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High Reliability: Proven design ensures stable long-term operation in harsh industrial conditions.
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Seamless System Integration: Compatible with all 3300 XL Proximitor Sensors and extension cables.
FAQ
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What measurement principle does the 330709-000-040-50-02-00 probe use?
It operates using the eddy current principle, detecting changes in the electromagnetic field to measure vibration and displacement. -
Is this probe compatible with other 3300 XL system components?
Yes, it is designed for full compatibility with 3300 XL Proximitor Sensors and extension cables, forming a complete transducer system. -
What is the standard system output sensitivity?
The probe provides a consistent output of 200 mV/mil (7.87 mV/μm) when calibrated with the Proximitor Sensor. -
How does the probe maintain accuracy under temperature variations?
It features temperature-compensated materials and design, minimizing drift across a wide thermal range. -
What kind of target surface is recommended for calibration?
The probe is factory-calibrated for AISI 4140 steel, which provides a standardized response for most industrial applications. -
Can the probe detect both vibration and shaft position?
Yes, it measures both dynamic vibration (motion) and static displacement (position). -
How does the shielding improve performance?
The double-shielded coaxial cable significantly reduces electromagnetic and radio frequency interference, ensuring clean signal output. -
What is the linear operating range of the probe?
The probe maintains full linearity within 2.0 mm (80 mils), ensuring accurate displacement readings. -
Does the probe meet industrial protection standards?
Yes, it complies with API 670, CE, and CSA standards for vibration and displacement monitoring systems. -
How should the probe be mounted for optimal performance?
It must be mounted perpendicular to the target shaft with a precise gap setting to ensure accurate calibration and signal response.
Related Models (Same Series)
| Model | Description |
|---|---|
| 330708-00-10-90-02-00 | Standard 11 mm probe with extended cable for large machinery |
| 330706-05-46-10-02-00 | Reverse-mount 11 mm probe for rear installation applications |
| 330704-005-040-10-02-00 | Standard front-mount probe with 5 m cable for versatile use |
| 330704-000-040-10-02-05 | Compact probe for small turbine and compressor monitoring |
| 330703-000-100-10-02-00 | High-precision probe for confined installation spaces |
| 330703-010-070-10-01-00 | Medium-range proximity probe for balanced rotor systems |
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|---|---|
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| 330130-040-00 | 8 mm proximity probe for standard industrial monitoring |
| 330780-51-00 | 3300 XL Proximitor Sensor compatible with 11 mm probes |
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