Bently Nevada 330105-02-12-10-02-05 Proximitor Sensor – Precision eddy-current driver for 3300 XL 8 mm vibration and position monitoring

The Bently Nevada 330105-02-12-10-02-05 is part of the 3300 XL 8 mm transducer system. It pairs with the 330103 proximity probe and 330104 extension cable to deliver a conditioned, calibrated signal (typically 200 mV/mil, 7.87 mV/µm) directly to Bently Nevada monitors such as 3500, 3300, and 1900 series. From my experience, plants choose this Proximitor when they need stable long-term shaft vibration and axial position measurements on critical rotating machinery—turbines, compressors, large pumps, and gearboxes—without constant recalibration headaches.

Order Placement Process and Guarantees

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

Key Features

• Matched 3300 XL 8 mm system – Works with 330103 probe and 330104 extension cable for factory-calibrated performance.
• Standard scale factor – Typically 200 mV/mil (7.87 mV/µm) for straightforward integration with Bently Nevada monitors.
• Wide linear range – Designed for an 8 mm tip system with the usual 80 mil (≈2 mm) linear span, suiting most turbomachinery gaps.
• Robust signal conditioning – Stable gap and dynamic outputs for both vibration and position measurements.
• Industry-proven compatibility – Commonly used with 3500/40M, 3500/42M, 3300, and 1900/65A monitors; easy drop-in on existing racks.
• Industrial temperature range – Built for cabinet or field mounting in typical plant environments.
• Noise immunity – Coaxial cabling and shield grounding practices help reduce EMI in high-voltage areas.

Technical Specifications

Application Fields

This model is commonly deployed on steam and gas turbines, centrifugal and screw compressors, critical process pumps, fans/blowers, gearboxes, and generators. You might notice that plants standardizing on 3500 racks often keep a few 330105 units as spares for fast recovery during outages.

• Radial shaft vibration and position on journal bearings
• Thrust position monitoring with appropriate probe mounting
• Startup/slow-roll runout checks and rotordynamic diagnostics
• Condition monitoring programs where absolute sensitivity matters

Advantages & Value

• Reliability under real plant conditions – Stable calibration and low drift help avoid nuisance alarms.
• Seamless compatibility – Works as a drop-in replacement in many 3300/3500 installations, minimizing downtime.
• Inventory simplicity – Shared scale factor across 8 mm systems reduces spares complexity.
• Lifecycle savings – Less rework during turnarounds and predictable performance typically translate to lower maintenance cost.
• Technical support – We can help with option-code selection and system-length matching (5 m / 7 m / 9 m) to keep readings within spec.

Installation & Maintenance

• Environment – Mount in a clean, dry cabinet (IP54/NEMA 12 or better is typical). Keep away from high-frequency drives and high-voltage bus bars when possible.
• Wiring – Use the specified coax cables; maintain shield continuity and a single-point ground to reduce EMI. Avoid tight bends and mechanical stress on connectors.
• System length – Match probe + extension cable lengths (e.g., 5 m, 7 m, 9 m) to the Proximitor to keep calibration correct.
• Gap setup – Set the DC gap near mid-range (often around -10 V at the monitor) for best linearity; verify with a micrometer target if available.
• Routine checks – Inspect connectors for looseness/corrosion, confirm baseline gap voltage, and review vibration trends after major maintenance.
• Safety – De-energize the monitor channel before reconnecting cables. Follow plant lockout/tagout and hazardous area practices where applicable.

Quality & Certifications

• Conforms to CE and RoHS requirements; agency approvals (CSA/ATEX/IECEx) are available on many option codes.
• Manufacturer reputation for long-term stability in critical machinery protection systems.
• Supply warranty: 365 days; units are typically new or professionally tested before shipment.

Recommended Supporting Components

• Bently Nevada 330103-XX-XX-XX – 3300 XL 8 mm proximity probe (various thread/process lengths).
• Bently Nevada 330104-XX-XX-XX – 3300 XL extension cable (system length matching: 5 m / 7 m / 9 m).
• Bently Nevada 3500/40M, 3500/42M – Vibration/position monitor modules commonly paired with 330105 sensors.