Bently Nevada 330140-08-50-12-00-00 3300 XL 8mm Proximity Probe

Bently Nevada 330140-08-50-12-00-00 3300 XL Proximity Probe System

The Bently Nevada 330140-08-50-12-00-00 delivers industrial-grade non-contact displacement sensing for critical rotating equipment. Engineered with an 8mm sensing head and 12-meter integrated cable, this 3300 XL proximity probe provides reliable shaft position and vibration data in the harshest operating conditions.

Key Technical Parameters

• Part Number: 330140-08-50-12-00-00
• Probe Tip Diameter: 8mm ( ±0.05mm tolerance)
• Integrated Cable Length: 12 meters (39.4 feet)
• Linear Operating Range: 2.0mm nominal
• Frequency Response: DC to 10 kHz (-3dB point)
• Temperature Range: -40 °C to +105 °C continuous operation
• Thread Specification: 8mm x 1.0 metric fine thread
• Body Material: 300 series stainless steel
• Cable Type: Low-noise coaxial construction
• Connector: BNC or TNC termination options

Industrial Application Scenarios

This proximity probe serves mission-critical machinery monitoring across power generation, oil and gas, petrochemical, and heavy manufacturing sectors. Deploy it for continuous vibration surveillance on steam turbines, gas compressors, centrifugal pumps, electric motors, and gearbox assemblies. The extended 12-meter cable eliminates the need for field splicing in installations where proximitor housings must be mounted at significant distances from the measurement point.

Complete Monitoring Solutions

When integrated with Bently Nevada 3300 XL Proximitor sensors and rack-mounted monitoring systems, the 330140-08-50-12-00-00 forms a complete transducer system. This configuration enables real-time tracking of radial vibration, axial position, differential expansion, and eccentricity. The system supports both API 670 machinery protection applications and predictive maintenance programs, providing early fault detection for bearing wear, rotor imbalance, misalignment, and rub conditions.

Installation Best Practices

Mount the probe perpendicular to the shaft surface with a target gap of 1.0mm ±0.5mm for optimal linearity. Ensure the observed surface is smooth, clean ferromagnetic material with minimum thickness of 24mm (3 probe diameter). Route the cable away from high-voltage power lines and variable frequency drives to minimize electromagnetic interference. Use proper grounding techniques and maintain bend radius greater than 50mm throughout the cable run.

Frequently Asked Questions

Q: What distinguishes the 12-meter cable version from shorter models?
A: The factory-terminated 12m cable eliminates field splicing requirements, reducing installation time and potential failure points in remote mounting applications where proximitor housings are located far from the probe installation point.

Q: Is this probe compatible with legacy 3300 series systems?
A: Yes, the 3300 XL series maintains full backward compatibility with original 3300 proximitor systems when properly configured, enabling seamless upgrades without complete system replacement.

Q: What shaft surface finish is required for accurate measurements?
A: Target surface roughness should not exceed 6.3 ¼m Ra (250 ¼in). Smoother surfaces improve measurement accuracy and reduce electrical runout.

Q: Can this probe measure non-ferrous materials?
A: No, eddy current proximity probes require ferromagnetic targets. For non-ferrous shafts, consider installing a ferromagnetic sleeve or using alternative sensing technologies.

Q: How do I verify probe calibration in the field?
A: Use a Bently Nevada TK-3E test kit or equivalent calibration fixture to verify the voltage-to-gap relationship across the full operating range. Factory calibration certificates are available upon request.

Quality Standards & Warranty Coverage

Manufactured under ISO 9001:2015 certified processes with full traceability documentation. Each probe undergoes 100% electrical testing and calibration verification before shipment. Comprehensive 12-month warranty protects against manufacturing defects and material failures. Extended warranty programs available for critical service applications requiring maximum reliability assurance.

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