Bently Nevada 330703-000-050-10-01-05 – 3300 XL 8 mm Proximitor Sensor for Reliable Shaft Vibration and Position Monitoring

The Bently Nevada 330703-000-050-10-01-05 is part of the 3300 XL 8 mm proximity transducer system that plants rely on for continuous machine protection. From my experience, this model is typically used with 3300 XL 8 mm probes and extension cables to deliver a clean voltage signal for both shaft vibration and shaft position (gap), feeding directly into monitors like the 3500 series. You might notice that it’s chosen when technicians want stable 200 mV/mil sensitivity and long-term drift control without constantly re-zeroing the channel.

Our 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

• 3300 XL 8 mm system compatibility – Works with standard 3300 XL 8 mm probes and 330130 extension cables to form a matched transducer chain.
• Stable 200 mV/mil sensitivity – Delivers the industry-familiar scale factor (≈7.87 mV/μm) for both dynamic vibration and DC gap measurement.
• Designed for API 670-class protection – In many cases used in API 670 compliant systems for critical rotating assets.
• Low-noise signal conditioning – The Proximitor Sensor conditions the eddy-current probe signal for dependable long cable runs and clean monitoring.
• Rugged industrial build – Typically installed in proximity to the machine, with shielding and grounding to resist EMI in harsh environments.
• Simple wiring to the monitor – Screw-terminal connections make it straightforward to land into 3500/3300 monitors or compatible vibration modules.

Technical Specifications

Application Fields

This model is widely applied on critical rotating assets: steam and gas turbines, compressors, large motors, pumps, gearboxes, and generators. In most cases it’s paired with 3500/40M or 3500/42M monitors for alarm and trip logic. A typical retrofit scenario is replacing an aging proximitor in a pump train—technicians often report cleaner baselines and quicker settling when the transducer chain is correctly matched (probe + extension + proximitor).

Advantages & Value

• Reliability under harsh conditions – From my experience, the 3300 XL design resists electrical noise and temperature swings better than generic substitutes.
• Compatibility that reduces downtime – Drop-in with existing 3300/3500 channels, typical 200 mV/mil scaling means minimal reconfiguration during swap-outs.
• Lower lifecycle cost – Stable calibration reduces false alarms and troubleshooting hours, which in many cases saves more than the hardware cost.
• Strong technical ecosystem – Documentation, diagnostics, and broad field experience make commissioning predictable.

Installation & Maintenance

• Cabinet and environment – Install in a clean, dry enclosure (typically IP54 or better) with adequate ventilation; avoid high-heat zones and strong EMI sources.
• Wiring practices – Use the matched 3300 XL probe and extension cable; maintain bend radius; separate probe wiring from power cables; ensure single-point grounding to minimize noise.
• Monitor connections – Land the proximitor output to the designated Bently Nevada monitor terminals; verify polarity and shield terminations.
• Safety – De-energize circuits before working; for hazardous areas, select the appropriately approved option code and barriers (this specific code appears to be general-purpose).
• Routine checks – Periodically verify gap voltage, inspect connectors, clean terminals, and, when firmware is applicable on the monitoring side, keep it current to improve diagnostics.
• Calibration – Keep the transducer chain matched (probe + extension + proximitor). Re-verify scale factor if any component is replaced.

Quality & Certifications

• CE marked and RoHS compliant in typical configurations
• UL/CSA approvals commonly available across the 3300 XL family
• Manufacturer-grade build for API 670-class protection systems
• Warranty: 365 days