Bently Nevada 330106-05-30-90-02-05 (CN) – 3300 XL 8 mm Proximity Probe for Critical Shaft Vibration and Position Monitoring

The 330106-05-30-90-02-05 (CN) is part of the Bently Nevada 3300 XL proximity transducer system—typically paired with the 330130 extension cable and a 3300 XL Proximitor Sensor—to give reliable, API 670‑ready measurements of shaft vibration, radial/axial position, and rotor clearance on turbomachinery. From my experience, this model is the go-to when plants want stable readings across long operating hours and a wide temperature envelope, without re‑calibration headaches.

Company’s 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 delivery: FedEx, UPS, DHL

Key Features

• 3300 XL 8 mm sensing – Eddy‑current probe designed for ferromagnetic targets; ideal for shafts, thrust runners, and collar surfaces.
• System sensitivity – When used with a matching 3300 XL Proximitor Sensor, the system typically provides 200 mV/mil (≈7.87 mV/µm) output proportional to displacement.
• Robust industrial build – Rugged probe body and cable designed for oil & gas and power machinery environments, including high temps near bearing housings.
• API 670 friendly – Commonly deployed to meet API 670 monitoring practices for critical rotating assets.
• Compatibility – Works with Bently Nevada 330130 extension cables and 3300 XL Proximitor Sensors; backward compatible in many cases with existing racks.
• Flexible mounting – Threaded installation with jam nut or probe holders; option codes define thread type, cable length, and temperature capability.

Technical Specifications

Brand / Model	Bently Nevada 330106-05-30-90-02-05 (CN), 3300 XL Series (8 mm probe)
HS Code	9031.80 (Measuring/monitoring instruments, other)
Power Requirements	N/A (probe is passive). Powered via associated 3300 XL Proximitor Sensor.
Dimensions & Weight	8 mm tip diameter; threaded body and cable length defined by option codes. Weight varies with length (application dependent).
Operating Temperature	Probe/cable options typically support elevated temperatures near machinery; exact rating depends on selected option code (high‑temp variants commonly used up to the high hundreds °C region at the tip). Proximitor Sensor typically: ambient cabinet range.
Signal Input/Output Types	Eddy‑current displacement measurement; system output via Proximitor Sensor is analog voltage proportional to gap (typically 200 mV/mil). Buffered dynamic output available at the Proximitor.
Communication Interfaces	None on the probe. Analog wiring to the Proximitor; downstream connection to monitors/PLC/DCS via standard terminals.
Installation Method	Threaded probe with jam nut or holder. Connect to 330130 extension cable, then to a 3300 XL Proximitor Sensor. Typical cold gap set via feeler gauges per OEM procedures.

Application Fields

You might notice this probe shows up wherever downtime is expensive. Typical deployments:

• Steam and gas turbines – radial vibration and shaft position
• Compressors and expanders – journal and thrust monitoring
• Large pumps and blowers – bearing housing measurements
• Generators and gearboxes – casing and rotor dynamics monitoring

A maintenance lead from a refinery told me their 3300 XL probes “just stay put” through outages and startups—no drift, which is what you want when the first hour after a restart is the most telling.

Advantages & Value

• Reliability – Stable output over temperature and time, which typically reduces nuisance alarms and false trips.
• Compatibility – Seamless with existing Bently Nevada 3300/3500 racks and many legacy installations.
• Lifecycle savings – Durable cabling and hardware mean fewer probe replacements and faster turnarounds during outages.
• Supportability – Clear option coding and well‑documented setup eases spares planning and field service.

Installation & Maintenance

• Mounting – Install the threaded probe with a proper jam nut or holder. Maintain the specified thread engagement and orientation to the shaft.
• Gap setting – Set the cold gap with feeler gauges to the monitor’s recommended nominal (often around 1.0 mm, but follow your machinery OEM and Bently Nevada guidance).
• Wiring – Route the probe lead to the 330130 extension cable, then to the 3300 XL Proximitor Sensor. Keep cable runs away from high‑power lines and ensure proper shielding/grounding.
• Cabinet & ventilation – Mount Proximitor Sensors in a dry, ventilated panel; observe the ambient ratings. DIN rail or bulkhead as specified.
• Safety – Lock‑out/tag‑out rotating equipment before adjustments. Verify hazardous area approvals if installed in classified zones.
• Routine checks – Periodic cleaning of probe tips, inspection of cable armor, verification of gap and bias voltage, and firmware updates on downstream monitors where applicable.
• Calibration – System verification with a micrometer or target simulator is typically recommended after shutdowns or component replacement.

Quality & Certifications

• Manufacturer quality system: typically ISO 9001
• CE marking; RoHS compliance in most configurations
• Hazardous area certifications (e.g., ATEX/IECEx) available for selected options; verify against your code string
• Warranty: 365 days from delivery

Related Components (often ordered together)

• Bently Nevada 330130 – 3300 XL Extension Cable (length per option code)
• Bently Nevada 3300 XL Proximitor Sensor – Matched to 5 mm/8 mm probes
• Probe holders, brackets, and jam nuts matched to the thread option in your code

One thing I appreciate is how the 3300 XL lineup stays consistent across revisions—the -05-30-90-02-05 (CN) option string simply narrows mounting thread, cable and temperature selections. If you can share your exact mounting thread and target temperature, I can double‑check the option mapping and confirm lead time.