Bently Nevada 330103-05-10-10-02-05 – 3300 XL 8 mm Proximity Probe for Reliable Shaft Vibration and Position Measurement

The 330103-05-10-10-02-05 appears to be a Bently Nevada 3300 XL 8 mm proximity probe assembly, designed for critical machinery protection and condition monitoring. From my experience, this series is the go-to choice when you need stable, low-drift shaft displacement measurements on turbines, compressors, pumps, or large motors—especially where uptime is king and false trips are not acceptable.

Company’s Order Placement Process and Guarantees

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

Key Features

• 3300 XL 8 mm sensing tip – Helps achieve a typical 2.0 mm (80 mil) linear range with low thermal drift when paired with the matching Proximitor.
• Proven eddy-current technology – Stable shaft vibration and position measurements on conductive targets (AISI 4140 standard), even in oily environments.
• System-matched performance – Nominal 7.87 mV/µm (200 mV/mil) sensitivity with the 3300 XL Proximitor 330180 for consistent readings across assets.
• Rugged construction – IP68 probe tip, oil-resistant cable, and threaded mounting for secure installation near high-speed rotating shafts.
• Flexible options – Thread form and cable length are determined by the option codes; armored or non-armored variants are commonly available.
• Compatibility – Typically used with Bently Nevada 330180 Proximitor and 3500/3701/1900 series monitors for API 670 style protection systems.

Technical Specifications

Application Fields

You might notice that these probes show up in most API 670 environments. Typical uses include:

• Steam and gas turbines – Shaft vibration/position monitoring for trip and trending.
• Compressors and expanders – Radial vibration and axial position measurements.
• Pumps and motors – Bearing condition and shaft movement diagnostics in process lines.
• Gearboxes and generators – Detecting rubs, misalignment, and early imbalance issues.

Compatible Accessories / Supporting Components

• 330180 Proximitor (3300 XL) – Required driver for the 8 mm system; provides power and scaling.
• 330130 Extension Cable – Extends probe cable length while maintaining system matching.
• Mounting hardware (e.g., brackets and jam nuts) – For rigid, repeatable probe positioning.
• 3500/3701/1900-series monitors – Typically used for protection and condition monitoring.

Advantages & Value

• Reliability under harsh conditions – Typically resists oil splash, temperature swings, and electrical noise found in real plants.
• System compatibility – Works with standard Bently Nevada proximitor/monitor ecosystems many sites already deploy.
• Lifecycle savings – Stable scaling and fewer nuisance trips reduce unplanned downtime and maintenance callouts.
• Expert support – We help verify option codes, cable lengths, and threads so the new probe lands as a drop-in replacement.

Installation & Maintenance

• Mounting and cabinet standards – Install the Proximitor in a ventilated control cabinet; maintain separation from high-voltage lines.
• Probe positioning – Use a rigid bracket, maintain perpendicularity to the shaft, and set the gap using the Proximitor bias voltage (typically around -10 Vdc mid-range).
• Wiring and grounding – Route sensor cables away from VFD power lines, observe minimum bend radius, and ground as per Bently Nevada guidelines.
• Routine checks – Verify bias voltage during turnarounds, clean the probe tip if fouled, and re-check tightness of jam nuts.
• Calibration practice – For best results, keep probe, extension cable, and Proximitor as a matched set; avoid mixing unless you re-calibrate.
• Firmware/monitor updates – Keep rack or monitor firmware current to ensure stable trending and diagnostics.

Quality & Certifications

• Certifications: CE compliance; RoHS alignment is typical for current production. Manufactured under ISO 9001 quality systems.
• Warranty: 365-day warranty coverage from delivery date.

One thing I appreciate is how predictable the 330103 behaves once gapped correctly—less chasing drift, more time focusing on actual machine faults. If you’d like, I can help decode the “-05-10-10-02-05” option set to confirm thread type, cable length, and armor so it matches your existing probes.