Bently Nevada 330980-71-05 – Proximitor-type vibration transducer component for 3300/3500 machinery protection

The Bently Nevada 330980-71-05 is specified for proximity-based shaft vibration and position measurements, typically deployed with 3300/3500 rack monitors. From my experience, users select this part as a field-mount component in a proximity transducer chain (probe + extension cable + Proximitor/sensor), where it delivers a clean dynamic signal for radial vibration and a stable DC gap voltage for position/clearance readings. It seems to be a straight swap in many brownfield upgrades, with minimal rewiring when you keep the original probe and cable options consistent.

Order Placement Process and Guarantees

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

Key Features

• Designed for proximity measurements – When matched with the correct eddy-current probe and extension cable, it provides dynamic (AC) vibration and DC gap outputs for precise shaft monitoring.
• 3300/3500 monitor compatibility – In most cases, it integrates smoothly with Bently Nevada 3300 and 3500 racks for protection and condition monitoring.
• Stable bias voltage – You might notice quick bias checks make fault finding easier in the field, helping technicians verify gap and setup in minutes.
• Industrial temperature range – Built for plant environments, typically supporting wide ambient temperatures common around turbines, compressors, and pumps.
• Field-mount housing – Compact surface-mount enclosure simplifies placement near the machine, keeping cable lengths within spec.
• Option coding – The “-05” option typically denotes a 5 m cable length in the chain specification, helping with drop-in replacements.

Technical Specifications

Application Fields

This model is typically specified in continuous vibration and position monitoring on rotating assets:

• Steam and gas turbines – radial vibration, thrust position, and differential expansion setups
• Centrifugal and reciprocating compressors – protection and diagnostic measurements
• Large pumps and motors – protection against rubbing, misalignment, and looseness
• Gearboxes and generators – early fault detection through shaft dynamics

Advantages & Value

• Drop‑in compatibility – In many cases it reuses existing probe/cable runs, avoiding rework and reducing downtime.
• Signal integrity – Proven analog output chain that plays nicely with 3300/3500 monitors for trip/relaibility logic.
• Lower lifecycle cost – Stable bias and robust cabling typically mean fewer nuisance trips and quicker field diagnostics.
• Procurement confidence – Clear options coding (e.g., “-05” length) makes specification control straightforward during MRO purchases.

Installation & Maintenance

• Mounting – Fix the unit on a rigid surface near the machine. Keep runs short and observe minimum bend radius on cables.
• Wiring – Use shielded cables, ground at a single point, and route away from high‑current drives to minimize EMI.
• Gap setup – Set probe gap to the recommended nominal; verify DC bias voltage after thermal soak.
• Routine checks – Inspect connectors and cable integrity quarterly; confirm bias and AC amplitude against baseline trends.
• Firmware/monitor – If used with a 3500 rack, keep monitor firmware aligned with your site standard; re-validate alarm setpoints after replacement.
• Safety – De-energize the monitor channel before rewiring; follow site lockout/tagout procedures.

Quality & Certifications

• Manufacturer quality system typically aligned with ISO 9001
• CE and RoHS conformity are commonly available for Bently Nevada proximity transducer components
• 365‑day warranty coverage provided with supply

Common Supporting Components

To build a complete proximity transducer chain, the following are typically paired with the 330980-71-05 (match options for length and thread):

• Bently Nevada 330103 / 330104 – 8 mm eddy‑current proximity probes (various thread and tip options)
• Bently Nevada 330130 – Extension cable series, assorted lengths
• Bently Nevada 330180 – 3300 XL Proximitor Sensor module for 8 mm probes

Quick customer note: a maintenance lead on a steam turbine line mentioned that swapping to the same “-05” length kept their bias within 0.1 V of baseline without re-tubing the conduit. That small detail saved them a full shift.