Bently Nevada 330105-02-12-20-02-05 – 3300 XL Proximity Transducer Component for Shaft Vibration and Position Monitoring

The Bently Nevada 330105-02-12-20-02-05 belongs to the 3300 XL proximity transducer family that plants use to measure shaft vibration, radial/axial position, and rotor-to-stator clearance on critical rotating machinery. From my experience, this configured code indicates a specific mechanical thread and length/cable build suitable for tight installations around compressors, steam/gas turbines, large pumps, and gearboxes. You might notice that it drops seamlessly into existing 3300 XL systems, pairing with a 3300 XL Proximitor Sensor and extension cable to deliver the familiar -200 mV/mil (7.87 mV/µm) system output in most cases.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery time: 1 week for in-stock; no more than one month at the latest
• Payment: 50% advance payment, full payment for delivery
• Express delivery: FedEx, UPS, DHL

Key Features

• 3300 XL ecosystem compatibility – Typically used with 3300 XL Proximitor Sensor and matching extension cable for non-contact displacement measurements.
• Precision shaft measurements – Supports vibration and position monitoring with a system sensitivity around -200 mV/mil (7.87 mV/µm) when paired with the appropriate proximitor.
• Rugged build for harsh areas – The probe/cable assemblies in this family are designed for elevated temperatures and industrial oil environments.
• Configurable mechanics – The “-02-12-20-02-05” option set usually denotes thread type, case length, and cable/connector configuration to match common machine housings.
• Stable long-term performance – In many cases, the 3300 XL design provides excellent linearity and gap stability, reducing drift-related nuisance alarms.
• Drop-in replacement behavior – Helps maintain calibration and measurement philosophy across installed Bently Nevada racks and monitors.

Technical Specifications

Application Fields

Plants typically deploy this model on:

• Large steam and gas turbines for radial vibration and thrust position monitoring
• API-compliant compressors (reciprocating and centrifugal) for critical bearing/shaft measurements
• High-speed pumps, fans, and blowers where non-contact measurements reduce maintenance frequency
• Gearboxes and generators where tight clearances demand stable eddy-current sensing

Advantages & Value

• Reliability you can plan around – The 3300 XL platform is well-proven; it seems to hold calibration well even with thermal cycling.
• Compatibility with installed base – Works with Bently Nevada monitors and proximitor modules, cutting engineering time and re-wiring.
• Lower lifecycle cost – Stable performance and easy interchangeability typically reduce spare holdings and downtime risk.
• Supportable long term – Wide availability of probe mounts, sleeves, and extension cables (e.g., 330130) keeps maintenance straightforward.

Installation & Maintenance

• Environment & cabinet: Use standard industrial control cabinets for monitors; ensure ventilation and keep proximitor modules within their thermal limits.
• Mounting: Install the probe using the correct threaded sleeve; set target material and gap per spec (a mid-range DC gap is typically preferred for linearity).
• Wiring: Route coax cables away from high-voltage and VFD lines; avoid tight bends; use proper strain relief at probe and proximitor ends.
• Safety: De-energize associated equipment before installation; verify hazardous area practices where applicable; follow lockout/tagout.
• Routine care: Inspect tip and cable condition during shutdowns; clean oil residue; verify gap voltage and sensitivity; update firmware on associated monitors as recommended.
• Calibration: Perform system check with a calibrated micrometer or target; confirm -200 mV/mil (7.87 mV/µm) response on dynamic tests if using an 8 mm proximitor.

Quality & Certifications

• CE compliant; RoHS-conforming construction for most 3300 XL probe/cable assemblies
• Manufacturing quality aligned with ISO-based processes
• Typical warranty: 365 days (as provided above)

Compatible & Supporting Components

• 3300 XL Proximitor Sensor (5 mm/8 mm variants) – required for system power and signal conditioning
• 330130 Extension Cable – common cable family for 3300 XL systems
• Mounting sleeves/adapters – UNF or metric sleeves matched to the probe thread option

One thing I appreciate is how forgiving the system is during outages—technicians can swap a damaged probe or cable, reset the gap, and bring the machine back without recoding the monitor. A maintenance supervisor recently told us they shaved a full turnaround shift by keeping one spare probe/cable set per train; that seems to be a smart policy for high-criticality assets.