BENTLY NEVADA 330780-51-05 – 3300 XL Proximity Extension Cable for Reliable Machine Vibration Monitoring

The BENTLY NEVADA 330780-51-05 is a factory-terminated extension cable used in 3300 XL proximity transducer systems. From my experience, this model is chosen when teams want stable, low-noise transmission from the probe to the Proximitor sensor over longer runs inside machinery skids or cabinets. It’s typically paired with 3300 XL 5 mm/8 mm probes and their matching Proximitors for shaft vibration, axial position, and Keyphasor reference measurements on compressors, turbines, pumps, and generators.

One thing I appreciate is how consistently it maintains signal integrity in electrically “busy” environments. You might notice that installations using genuine 3300 XL cabling see fewer nuisance trips and a cleaner signal into the rack modules, which in many cases translates into steadier trending and more confident trips/alerts.

Our Order 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 system compatibility – Designed for use with 3300 XL proximity probes and Proximitors used in API 670-class vibration monitoring.
• Low-noise coax construction – Stable eddy-current signal transmission helps reduce pickup and drift, especially around VFDs and high-current cables.
• Factory-terminated connectors – Consistent quality at both ends; typically reduces installation time and rework on site.
• Rugged industrial jacket – Suitable for harsh plant environments; routing through trays or conduits is straightforward in most cases.
• Service-friendly – Clear identification and reliable mating simplify swaps during turnarounds and unplanned outages.

Technical Specifications

Application Fields

Typically used across critical rotating assets where precise proximity measurements are needed:

• Steam and gas turbines – radial vibration and thrust position channels
• Compressors and expanders – continuous condition monitoring to API 670 practices
• Large motors, pumps, and fans – bearing protection and trend analysis
• Gearboxes – shaft dynamics and Keyphasor reference routing

Advantages & Value

• Reliability – Genuine 3300 XL cabling seems to deliver fewer intermittent faults compared to mixed vendor builds.
• Compatibility – Drop-in fit with existing 3300 XL probes/Proximitors; no adapter kits or custom terminations.
• Cost Control – Reduces time spent chasing noise issues; lower risk of unscheduled trips saves real money.
• Technical Support – Clear model traceability makes troubleshooting faster during outages.

Installation & Maintenance

• Install Proximitor modules in a ventilated control cabinet; maintain typical clearances for heat dissipation.
• Route the cable away from high-voltage conductors and VFD output leads; maintain gentle bend radius and strain relief.
• Use clean, tight connections at both ends; avoid over-tightening which can damage coax terminations.
• During turnarounds, visually inspect jacket condition, verify continuity, and confirm system gap and calibration at the proximitor.
• Firmware updates apply to the monitoring rack; the cable is passive, but keeping the system firmware current improves diagnostics.

Quality & Certifications

• RoHS-compliant materials in most builds; CE conformity typically applies to the complete monitoring system
• Manufacturer’s warranty is generally 1 year; we provide a 365-day warranty on this item
• Traceable part/model coding for maintenance records and spares management

A quick note from the field

A maintenance lead at a refinery shared that swapping in 3300 XL extension cables across a mixed fleet reduced intermittent probe alarms during startups. It wasn’t dramatic at first, but over a few weeks the trend noise dropped and the team stopped “chasing ghosts” in their 1X and 2X plots. That’s the kind of small win that adds up.