Bently Nevada 330901-00-90-10-02-05 – Proximity Probe Assembly for Precise Shaft Vibration and Position

The Bently Nevada 330901-00-90-10-02-05 is part of the 3300 series proximity transducer family used across critical rotating assets—turbines, compressors, pumps, and large motors. From my experience, this model is typically selected when you need stable non-contact measurement of shaft vibration or axial position, and you want the long-term reliability that plants expect from Bently Nevada. Paired with a matching 3300/3300 XL Proximitor sensor and an extension or integral cable, it delivers the standard 200 mV/mil signal that most protection systems are tuned for.

You might notice the code “-00-90-10-02-05” in the model. In many cases, these option blocks indicate build details such as the cable exit angle, cable length, and mounting/thread style; for maintenance teams, that removes guesswork when replacing like-for-like in the field. One thing I appreciate is how consistently these assemblies hold calibration across temperature and time, which reduces rework during outages.

Our Order Process and Guarantees

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

Key Features

• Non-contact eddy-current measurement – Stable shaft vibration and position signals without mechanical wear.
• 200 mV/mil system sensitivity – Works with standard Bently Nevada Proximitor sensors for easy integration with legacy and new systems.
• Factory-configured mechanical options – The build code typically covers cable exit (often 90°), cable length (e.g., 10 m), and mounting/thread selection to match existing hardware.
• Industrial temperature capability – Designed for hot machinery environments commonly found around turbines and compressors.
• High EMC robustness – In many cases, the system rejects electrical noise well when routed and grounded per Bently practices.
• Drop-in replacement behavior – Minimizes recalibration and downtime when replacing like-for-like assemblies.

Technical Specifications

Brand / Model	Bently Nevada 330901-00-90-10-02-05
HS Code	903180 (Other measuring or checking instruments)
Power Requirements	Passive probe; powered via compatible 3300/3300 XL Proximitor sensor
Signal Input/Output	Eddy-current proximity signal; system output typically 200 mV/mil (≈7.87 mV/µm) from Proximitor
Operating Temperature	Probe/cable assemblies in this series are commonly rated for elevated machinery temps; selection depends on build options
Dimensions & Weight	Factory-configured; compact probe with integral cable. The model code often reflects a 90° cable exit and ~10 m cable length
Communication Interfaces	None (analog proximity signal via Proximitor to monitor)
Installation Method	Threaded mounting into a probe sleeve or bracket; cable routed to panel/field-mounted Proximitor sensor

Application Fields

Typically installed on:

• Steam and gas turbines (radial vibration, differential expansion, thrust position)
• Compressors and fans (radial vibration, shaft orbit analysis)
• Pumps and gearboxes (early detection of rubs, misalignment, and looseness)
• Large motors and generators (bearing condition and shaft position trending)

Advantages & Value

• Reliability in harsh environments – Probes in this family are known to hold calibration even with heat and vibration.
• System compatibility – Works with Bently Nevada Proximitor sensors and standard protection monitors, reducing engineering time.
• Cost of downtime reduction – Like-for-like replacement behavior typically avoids retuning thresholds and logic.
• Lifecycle support – Easy to source with defined option codes; maintenance teams can standardize spares.

Installation & Maintenance

• Mounting – Install the probe in a rigid sleeve or bracket; keep the tip square to the target. A 90° cable exit helps with tight clearances around bearing housings.
• Gap calibration – Set the DC gap using the Proximitor output (e.g., 200 mV/mil systems often target ~-10 V mid-gap). Verify with a feeler gauge if accessible.
• Cable routing – Route away from high-voltage conductors; keep bends gentle. Ground and shield per Bently Nevada practices to minimize noise.
• Cabinet & ventilation – Mount Proximitor sensors in a clean, ventilated enclosure; maintain separation from high-heat sources.
• Routine checks – Inspect connectors, verify gap voltage, and clean probe tips during scheduled outages. Firmware updates apply to the monitoring rack, not the passive probe.
• Safety – Lock-out/tag-out rotating equipment. Confirm clearance before rotating equipment is brought back online.

Quality & Certifications

• Manufacturer-compliant for industrial vibration monitoring systems; models in this family commonly carry CE marking
• RoHS conformity is typical for current production variants
• Backed by our 365-day warranty; traceable sourcing available on request

Suggested Supporting Components

To complete the transducer system, you’ll usually pair this probe with:

• Compatible 3300/3300 XL Proximitor sensor (matching the probe type and range)
• Extension or integral cable as specified by the model code and installation distance
• Monitor channels (e.g., machinery protection system) set for 200 mV/mil input

A maintenance manager shared that swapping in like-for-like 3300-series probes during a turbine outage kept their protection thresholds unchanged—no nuisance trips on restart, which saved them hours.