330102-00-40-90-11-05 | Bently Nevada | 3300 XL 8 mm Proximity Probe

Description

The Bently Nevada 330102-00-40-90-11-05, also cataloged as the 330102 3300 XL 8 mm Proximity Probe, is designed for non-contact measurement of shaft vibration and position in rotating machinery. It operates with eddy-current technology, providing precise displacement signals when paired with a 3300 XL Proximitor Sensor and extension cable.

Hardware Specifications

• Part Number: 330102-00-40-90-11-05
• Manufacturer: Bently Nevada (GE Energy)
• Series: 3300 XL
• Product Type: 8 mm Proximity Probe
• Probe Tip Diameter: 8 mm
• Cable Length: Defined by suffix code (40 = 4.0 m)
• Connector Type: Specified by suffix (90 = right-angle connector)
• Thread Size: M10 x 1.0 (typical for 8 mm probes)
• Operating Temperature Range: -30 to 65 deg C
• Maximum Lead Resistance: 15 Ω
• Gap Voltage Validation: -10 VDC nominal target voltage
• Country of Origin: United States

Eddy-Current Probe Scaling

The 3300 XL 8 mm probe employs eddy-current scaling to convert shaft displacement into a proportional voltage signal. Gap voltage validation at -10 VDC ensures accurate calibration against standard targets. Cross-talk suppression circuitry minimizes interference between adjacent probes, maintaining fidelity in rotor dynamics monitoring. This design supports long-term stability in turbine and compressor applications.

Frequently Asked Questions (FAQ)

Q: Can the 330102 probe be hot-swapped during machine operation? A: No. The probe requires machinery shutdown before removal or replacement to maintain calibration integrity.

Q: What is the nominal gap voltage for calibration? A: The probe is calibrated to a -10 VDC gap voltage target.

Q: How does cable length affect signal accuracy? A: Cable length is factory-matched with the Proximitor Sensor; mismatched lengths can introduce scaling errors.

Field Installation Guidelines

• Install the probe with proper thread engagement (minimum 5 turns for M10 threads).
• Route the extension cable away from high-voltage conductors to reduce induced noise.
• Ensure shield grounding at the Proximitor Sensor end only.
• Verify probe tip alignment with the shaft surface for accurate displacement measurement.
• Maintain clearance from adjacent probes to avoid signal cross-talk.