Bently Nevada 330104-00-04-10-02-05 Proximity Probe – 3300 XL 8 mm sensing for shaft vibration and position

The Bently Nevada 330104-00-04-10-02-05 is part of the 3300 XL 8 mm proximity transducer system widely used on turbines, compressors, and critical pumps. It’s the probe element of the system and, when paired with the matching 3300 XL Proximitor Sensor and a 330130 extension cable, delivers stable, 200 mV/mil (7.87 mV/µm) displacement measurements. From my experience, plants choose this probe when they want drop‑in compatibility with existing Bently Nevada racks and monitors, plus dependable performance at elevated temperatures.

Order Placement Process and Guarantees

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

Key Features

• 3300 XL 8 mm sensing – Provides the classic Bently Nevada eddy-current measurement chain with excellent linearity for shaft vibration and axial position.
• System sensitivity: 200 mV/mil (7.87 mV/µm) – When used with the matching 3300 XL Proximitor Sensor, you get the expected scale factor for consistent trending.
• High-temperature probe and cable – Typically handles –51 to +177°C at the probe/extension cable, suitable for most hot bearing housings.
• Rugged, sealed construction – Designed for harsh industrial environments; you might notice fewer drift issues after thermal cycling compared with older generations.
• Drop-in compatibility – Works with 330130 extension cables and the 3300 XL Proximitor Sensor; system lengths of 5 m, 7 m, 9 m (and in many cases 14 m) are supported by matching options.
• Flexible mounting options – The 330104 series offers different thread and length options; this variant code configures mounting/thread, integral lead length, and connector style.

Technical Specifications

Application Fields

Typical deployments include:

• Steam and gas turbines – radial vibration and differential expansion monitoring
• Centrifugal/reciprocating compressors – shaft vibration, axial position, and rod drop (with proper brackets)
• Critical pumps and fans – bearing housing vibration and shaft orbit analysis
• Gearboxes – shaft relative vibration and thrust position trends

A maintenance lead at a refinery told us they swapped this probe into an existing 3300 XL chain during a short outage and were trending data within an hour. That’s fairly typical when system length and options are matched correctly.

Advantages & Value

• Reliability – Stable output across temperature swings; the 3300 XL design is proven in continuous service.
• Compatibility – Works with installed Bently Nevada racks/monitors; simplifies spares strategy.
• Lower commissioning effort – Known sensitivity and setup procedures reduce calibration time.
• Lifecycle cost – Durable probe/cable set typically extends service intervals; fewer unplanned replacements.
• Technical support – We can help verify option codes (thread, cable length, approvals) against your Bill of Materials to avoid mismatches.

Installation & Maintenance

• Cabinet/monitoring – Use the intended 3300 XL Proximitor Sensor in a ventilated enclosure; keep monitor wiring shielded and grounded at one end only.
• Mechanical mounting – Thread probe into a rigid, properly aligned bracket or bearing housing; locknut tightened per OEM torque. Avoid angular misalignment to the target surface.
• Gap setting – Set mid-gap around ~2.0 mm (80 mil) using feeler gauges; verify bias voltage at the monitor falls within the expected window.
• Cable routing – Respect minimum bend radius; keep away from high-voltage cables; do not splice probe leads—use the correct 330130 extension cable to achieve the system length.
• Routine checks – Periodically clean the probe tip, confirm tight hardware, and re-check bias voltages. Firmware updates apply to the monitoring system rather than the probe, but they’re worth scheduling during turnarounds.
• Safety – Isolate machinery before installation; ensure target material is conductive and surface is clean and flat for best linearity.

Quality & Certifications

• Manufacturer quality systems typically ISO 9001
• CE marking and RoHS compliance for most 3300 XL configurations
• Warranty: 365 days (our supply policy)

Commonly Paired Components

• Bently Nevada 330130 – 3300 XL extension cable (select length to achieve 5 m / 7 m / 9 m / 14 m system)
• Bently Nevada 3300 XL 8 mm Proximitor Sensor – required driver that conditions the probe signal and provides the 200 mV/mil output

If your plant uses mixed thread standards or non-standard system lengths, one thing I appreciate is how the 3300 XL family typically covers those options within the ordering code. This specific variant code defines the mounting thread, integral cable length, connector, and approval options—happy to verify against your BOM so everything mates properly on site.