The Bently Nevada 330104-00-10-10-02-05, also cataloged as the 330104 proximity probe, operates as a dedicated hardware component for eddy‑current displacement measurement within 3300 XL transducer systems.
Suffix Breakdown & Model Matrix
330104: 3300 XL 8 mm proximity probe with 3/8‑24 UNF or metric equivalent thread, integral armor.
00: Unthreaded length option (0 mm).
10: Overall case length option (1.0 in / 25.4 mm).
Linear range 2.0 mm (80 mils); scale factor 7.87 V/mm (200 mV/mil); PPS tip; stainless steel case; armored cable; CSA/ATEX/IECEx approvals
Eddy-Current Probe Scaling
The 3300 XL 8 mm probe family is engineered for:
Gap voltage validation at -10 VDC reference targets.
Rotor dynamics monitoring with stable linearity across 0.25–2.3 mm.
Cross‑talk suppression in multi‑channel installations.
Thermal stability maintained across -52 to +177 deg C operating range.
Frequently Asked Questions (FAQ)
Q: Can the probe be hot‑swapped during operation? A: No. Removal or insertion must be performed with the monitoring system powered down to maintain calibration integrity.
Q: What approvals are included in this configuration? A: The suffix “05” specifies CSA, ATEX, and IECEx certifications for hazardous area compliance.
Q: How does the integral armor affect installation? A: The armored cable provides mechanical protection in harsh environments, reducing risk of abrasion and fluid ingress.
Field Installation Guidelines
Install probe tip perpendicular to shaft surface for accurate displacement readings.
Maintain insertion depth to align with -10 VDC gap reference calibration.
Route armored cable with shielding grounded at a single point to minimize interference.
Avoid sharp bends in cable to prevent conductor fatigue.
Confirm driver calibration after installation to ensure proper sensitivity scaling.
Ensure probe case clearance in confined turbine applications.
