Bently Nevada 330101-02-12-10-11-00 3300 XL 8 mm Proximity Probe

Bently Nevada 330101-02-12-10-11-00 3300 XL 8 mm Proximity Probe

Configured for rotor dynamic displacement measurement in turbine supervisory instrumentation (TSI) systems, the Bently Nevada 330101-02-12-10-11-00 (330101 proximity probe) provides direct eddy-current signal acquisition.

Suffix Breakdown & Model Matrix

• 330101: 3300 XL 8 mm Proximity Probe model
• 02: Unthreaded length option
• 12: Overall case length option
• 10: Total probe cable length (1.0 meter)
• 11: Connector and cable-type option (miniature coaxial ClickLoc connector with protector)
• 00: Agency approval option (Standard / Non-hazardous)

Hardware Specifications

Gap Voltage Validation

The probe output is referenced to a nominal -10 VDC gap voltage target, ensuring consistent displacement scaling across interchangeable probes. This validation supports accurate rotor dynamics monitoring and suppresses cross-talk between adjacent channels.

Frequently Asked Questions

Q: Does the probe support hot-swap installation? A: No. The probe requires full system power-down before mechanical removal or replacement to avoid signal integrity issues.

Q: What is the typical backplane current load when connected via Proximitor? A: The probe itself is passive; current load is defined by the Proximitor sensor, typically within milliamps range.

Q: Can the probe be used with non-3300 XL extension cables? A: No. Only 3300 XL extension cables are supported to maintain scaling accuracy and interchangeability.

Field Installation Guidelines

• Ensure probe tip is aligned perpendicular to the shaft surface for accurate displacement measurement.
• Maintain shield continuity by grounding the coaxial cable shield at the Proximitor end only.
• Avoid routing probe cables parallel to high-voltage conductors to minimize induced noise.
• Engage NPT threads with a minimum of 5 turns to secure mechanical stability.
• Verify gap voltage at installation (-10 VDC nominal) before commissioning.