Bently Nevada 330140-08-10-11-05-00 | 3300 XL 8mm Proximity Transducer

Bently Nevada 330140-08-10-11-05-00 | 3300 XL 8mm Proximity Transducer

The Bently Nevada 330140-08-10-11-05-00 delivers precision non-contact displacement measurement for critical rotating machinery. Engineered within the proven 3300 XL platform, this 8mm proximity transducer combines rugged construction with exceptional measurement accuracy for turbomachinery protection and diagnostic applications across power generation, oil & gas, and heavy industrial sectors.

Core Technical Parameters

• Model: 330140-08-10-11-05-00
• Probe Diameter: 8mm (0.315″)
• System Platform: 3300 XL Proximity Series
• Linear Range: 1.0-2.0mm (40-80 mils)
• Frequency Response: DC to 10 kHz (-3dB)
• Operating Temperature: -40 °C to +105 °C (-40 °F to +221 °F)
• Thread Standard: 5/8-18 UNF-2A
• Housing Material: Corrosion-resistant stainless steel
• Compliance: API 670 4th Edition, ISO 20816
• Cable Type: Integral armored coaxial with BNC connector

Industrial Application Scenarios

This proximity transducer excels in mission-critical monitoring environments where shaft position and dynamic vibration data drive protection logic and predictive maintenance decisions:

• Steam Turbines: Radial vibration, thrust position, and differential expansion measurement for generator sets and mechanical drive applications
• Gas Turbines: Compressor stage monitoring, surge detection, and rotor eccentricity tracking in aero-derivative and industrial frames
• Centrifugal Compressors: Multi-stage vibration profiling and seal clearance monitoring in process gas and refrigeration service
• Large Motors & Generators: Bearing clearance verification and rotor position tracking in synchronous machines above 1MW
• Hydro Turbines: Guide bearing displacement and thrust collar position monitoring in Francis and Kaplan configurations
• Industrial Fans & Blowers: Unbalance detection and bearing wear trending in forced draft, induced draft, and process ventilation systems

Solution Advantages & Performance Benefits

Deploying the 330140-08-10-11-05-00 delivers measurable operational value through proven reliability and measurement precision. The stainless steel construction ensures long-term stability in environments with temperature cycling, chemical exposure, and mechanical stress. Its 8mm diameter enables retrofitting into existing installations while the standardized 3300 XL interface guarantees compatibility with legacy proximitor modules and current monitoring platforms.

Field-replaceable design minimizes downtime during maintenance cycles, while factory calibration ensures measurement accuracy from initial commissioning through years of continuous operation. The wide frequency response captures both slow-roll baseline data and high-frequency dynamic events, enabling comprehensive condition monitoring from startup through full-load operation.

Common Technical Questions & Answers

Q: Which proximitor module pairs with this probe?
A: The 330140-08-10-11-05-00 operates with any 3300 XL proximitor including the 330180 and 330780 series. Verify voltage output requirements match your monitoring system input specifications (typically -200 mV/mil sensitivity).

Q: Can this probe be used in hazardous area installations?
A: When combined with intrinsically safe barriers and certified proximitor modules, this probe supports Class I Division 2, Zone 2, ATEX, and IECEx applications. Consult installation drawings for specific barrier requirements and entity parameters.

Q: What is the recommended installation gap setting?
A: Install the probe to achieve a 1.27mm (50 mils) nominal gap at operating temperature. This positions the measurement within the linear range center, allowing ±30 mils bidirectional displacement tracking before approaching range limits.

Q: How do I verify probe functionality after installation?
A: Use a Bently Nevada TK-3 test kit or equivalent proximitor tester to verify DC gap voltage and dynamic response. Typical gap voltage should read -8 to -10 VDC at 50 mils with a -200 mV/mil sensitivity slope.

Q: What target material and surface finish are required?
A: The probe requires ferromagnetic target material (typically 4140 steel shaft) with minimum 75mm (3″) diameter. Surface finish should be 32 microinch Ra or better for optimal linearity and minimal electrical runout.

Warranty & Technical Support

Every unit ships with a comprehensive 12-month manufacturer warranty protecting against material and workmanship defects. Our engineering team provides pre-sales application consultation, installation guidance, and post-commissioning troubleshooting support to ensure optimal system performance throughout the product lifecycle.

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