Bently Nevada 330104-00-05-05-01-05 Proximity Transducer – Non‑contact shaft vibration and position sensing for critical machinery

The 330104-00-05-05-01-05 is a Bently Nevada proximity transducer probe used in the classic 3300/3500 measurement chain. In typical setups, it pairs with a matching extension cable and a Proximitor sensor to deliver API 670‑grade non‑contact displacement measurements. From my experience, this model is a straightforward drop‑in when you need reliable radial vibration, shaft position, or thrust measurements on turbines, compressors, pumps, and gearboxes.

One thing I appreciate is how predictable the 3300‑series transducer system behaves: when used with the appropriate Proximitor, you get the familiar 200 mV/mil (≈7.87 mV/µm) scaling and stable gap readings that maintenance teams already trust. The “‑05‑05” options commonly indicate a 10 m system length (5 m probe + 5 m extension), which suits most installations without introducing signal degradation.

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

• Non‑contact eddy‑current sensing – Stable radial/axial measurements on metallic targets with no mechanical wear.
• Compatible 3300/3500 ecosystem – Works with Bently Nevada Proximitor sensors and monitors for consistent scaling and alarms.
• System length configured for 10 m – “‑05‑05” typically means 5 m probe + 5 m extension cable, a very common plant standard.
• 200 mV/mil sensitivity (typical) – When paired with the matching Proximitor, enabling API 670‑compliant measurements in many cases.
• Rugged build for harsh environments – Stainless steel probe body and shielded cabling for reliable service in heat and vibration.
• Backwards‑compatible maintenance – Easy replacement for aging probes while keeping existing cables, drivers, and monitor setups.

Technical Specifications

Brand / Model	Bently Nevada 330104-00-05-05-01-05
HS Code	9031800000 (Measuring/monitoring instruments, other)
Power Requirements	Passive probe; powered via compatible Bently Nevada Proximitor sensor (driver)
System Length	10 m typical (5 m probe + 5 m extension cable)
Sensitivity (with Proximitor)	200 mV/mil (≈7.87 mV/µm), typical for 3300‑series systems
Operating Temperature	Probe: −51 to +177°C; cable components typically to +121°C
Signal Input/Output Types	Eddy‑current displacement; DC gap + AC vibration voltage provided by Proximitor
Communication Interfaces	N/A (analog transducer system; Microdot‑style coax connections to Proximitor)
Installation Method	Threaded probe mounting into machine case; shielded coax to extension cable; Proximitor panel/DIN mounting
Dimensions & Weight	As configured; 5 m probe cable + 5 m extension cable; typical assembly ≈0.3–0.5 kg

Application Fields

This probe is used across rotating equipment where non‑contact measurements are the standard of care:

• Steam and gas turbines – radial vibration and shaft position into 3500 racks
• Centrifugal and screw compressors – vibration and axial/thrust position monitoring
• Large pumps, fans, blowers – condition monitoring and protection trips
• Gearboxes and expanders – early fault detection on bearings and rotors

A maintenance lead at a petrochemical site told me they swapped in this exact option set during a turnaround and saw “no re‑range or alarm headaches—just re‑gap and run.” That lines up with what we typically see on replacements in mature plants.

Advantages & Value

• Reliability – Stable signal over long cable runs and high temperature zones, proven in continuous service.
• Compatibility – Fits established 3300/3500 monitoring architectures, minimizing engineering and re‑commissioning effort.
• Lifecycle cost – Using the correct length options reduces spares complexity and avoids custom field changes.
• Technical support – Clear gap/sensitivity behavior makes diagnostics and balancing work quicker in most cases.

Installation & Maintenance

• Mounting – Install the probe through a rigid, properly threaded port aimed at the shaft or target surface. Ensure sufficient target area and material (ferromagnetic steel is typical).
• Cabling – Route the shielded coax away from high‑current power cables. Avoid tight bends; secure at regular intervals to prevent fretting.
• Environment – Place the Proximitor in a ventilated cabinet or junction box; follow plant EMC and grounding practices.
• Gap setting – With the Proximitor connected, adjust to the recommended mid‑range DC gap voltage (often around −10 to −12 V for many setups). Verify with the monitor scale factor.
• Routine checks – Periodically inspect probe tip cleanliness, cable clamps, and connector tightness. Verify readings during outages; firmware/monitor updates as per OEM guidance.
• Safety – Lock‑out/Tag‑out rotating equipment before work. Confirm hazardous area approvals match the installation zone if applicable.

Quality & Certifications

• CE and RoHS compliance
• UL/cUL and ATEX/IECEx availability depends on specific option codes
• Manufacturer production under ISO 9001 quality systems
• 365‑day warranty coverage from shipment

Commonly Paired Components (for a complete transducer system)

• Extension Cable – Bently Nevada 330130‑XX‑XX (length options to match the probe for total system length)
• Proximitor Sensor (Driver) – Bently Nevada 330180‑XX‑XX (provides DC gap + AC vibration output, 200 mV/mil scaling)
• Monitors – Bently Nevada 3500 series or 3300 legacy monitors for protection and trending

If you’re aligning with an existing spare strategy, you might notice this part number slots neatly into 10 m systems already in your plant. Share your current option codes and I can double‑check interchangeability before you place the order.