Bently Nevada 330905-00-04-05-01-00 – Eddy Current Proximity Transducer System | 3300 XL Series
Engineering Background
The Bently Nevada 3300 XL Proximity Transducer System is the industry benchmark for non-contact shaft vibration and position measurement in rotating machinery. Engineered to API 670 standards, this system delivers continuous, real-time displacement data critical for turbomachinery protection and condition monitoring in power generation, oil & gas, and petrochemical facilities worldwide.
Product Positioning
Part number 330905-00-04-05-01-00 is a complete eddy current transducer system comprising a 5mm probe tip, 5-metre extension cable, and compatible driver/oscillator. Designed for direct integration with Bently Nevada 3500 and 3300 series monitoring racks, it provides procurement engineers with a fully validated, drop-in replacement or new-installation solution with zero re-calibration risk when sourced as a matched system.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 330905-00-04-05-01-00 |
| Series / Platform | Bently Nevada 3300 XL |
| Transducer Type | Eddy Current (Non-Contact) Proximity Probe |
| Probe Tip Diameter | 5 mm (0.197 in) |
| Extension Cable Length | 5 m (16.4 ft) |
| Driver Cable Length | 1 m (3.3 ft) |
| Linear Range | 0.25 – 2.25 mm (10 – 90 mil) |
| Scale Factor | 7.87 V/mm (200 mV/mil) |
| Frequency Response | DC – 10,000 Hz (–3 dB) |
| Supply Voltage | –24 VDC (nominal) |
| Output Voltage Range | –2 VDC to –18 VDC |
| Temperature Range (Probe) | –35°C to +177°C (–31°F to +351°F) |
| Temperature Range (Driver) | –35°C to +85°C (–31°F to +185°F) |
| Target Material | AISI 4140 Steel (standard); other alloys with calibration |
| Connector Type | MIL-C-5015 (probe); BNC (driver output) |
| Ingress Protection | IP67 (probe body) |
| Compliance | API 670, CE, RoHS |
| Weight | Approx. 300 g (complete system) |
| Country of Origin | USA |
Proven Application Environments
- Steam & Gas Turbines – Radial shaft vibration and axial position monitoring per API 670
- Centrifugal Compressors – Continuous displacement measurement for surge detection and rotor dynamics analysis
- Pumps & Gearboxes – Eccentricity and differential expansion monitoring in high-temperature environments
- Electric Motors (>1 MW) – Air-gap measurement and rotor orbit analysis
- Hydro Turbines – Thrust bearing position and shaft runout monitoring
- LNG / Petrochemical Trains – SIL-rated machinery protection in hazardous area installations
Engineering Advantages
- Matched System Calibration – Probe, extension cable, and driver are factory-calibrated as a set, eliminating field calibration errors and ensuring ±1% scale factor accuracy
- API 670 Compliance – Meets all requirements for machinery protection systems in critical rotating equipment
- Wide Temperature Tolerance – Probe rated to +177°C for direct installation adjacent to hot casings and bearing housings
- Non-Contact Measurement – Zero mechanical wear; continuous operation without maintenance intervals
- Rack Compatibility – Direct plug-in to Bently Nevada 3500/22M, 3500/40M, 3300/16, and 3300/20 monitor modules
- High Frequency Response – DC to 10 kHz bandwidth captures sub-synchronous, synchronous, and super-synchronous vibration components
System Architecture & Signal Flow
The 330905-00-04-05-01-00 operates on the eddy current principle: the probe tip generates a high-frequency electromagnetic field (typically 1–2 MHz). When a conductive target (rotor shaft) enters the field, eddy currents are induced, loading the oscillator circuit. The driver converts this impedance change into a linear DC voltage output (–2 V to –18 V), which is fed directly to the Bently Nevada monitor rack via the BNC output connector.
Signal chain: Probe Tip → Extension Cable (5 m) → Driver/Oscillator (1 m cable) → Monitor Rack Input Channel → 3500 System Manager / System 1 Software
Sourcing & Quality Verification
- Traceability – Each unit ships with original manufacturer documentation and serialized calibration records where available
- Inspection Protocol – All units undergo incoming inspection: visual, dimensional, and electrical verification against OEM datasheet parameters before listing
- Authenticity – Konmask sources exclusively from authorized distributors and verified industrial surplus channels; counterfeit screening is applied to every batch
- Condition – New (factory-sealed) or Refurbished-to-OEM-spec; condition stated explicitly on order confirmation
- Warranty – 12-month operational warranty against manufacturing defects
Procurement Process
- Submit RFQ – Contact support@konmask.com with your project quantity, required delivery date, and site location
- Quotation & Lead Time – Receive formal quotation within 24 business hours including DDP/DAP pricing options
- Order Confirmation – Purchase order accepted via email; proforma invoice issued for prepayment or net terms (approved accounts)
- Export Documentation – Commercial invoice, packing list, certificate of origin, and ECCN classification provided for all international shipments
- Shipping – DHL Express / FedEx International Priority standard; freight forwarding available for bulk orders
- After-Sales Support – Technical commissioning support available via WhatsApp/email; replacement guarantee for DOA units
Technical FAQ
Q: Can the 330905-00-04-05-01-00 be used with a 3500 series rack?
A: Yes. The 3300 XL probe system is fully compatible with Bently Nevada 3500/22M and 3500/40M monitor modules when used with the appropriate junction box or direct-connect configuration.
Q: What is the maximum shaft speed this system can monitor?
A: The 10 kHz frequency response supports shaft speeds up to approximately 600,000 RPM for 1× vibration; practical upper limit for most installations is 60,000 RPM with adequate signal resolution.
Q: Is field recalibration required after replacing a probe?
A: When replacing with an identical matched system (same part number), recalibration is not required per Bently Nevada application guidelines. Mixed-component systems require calibration verification.
Q: What target materials are supported?
A: Standard calibration is for AISI 4140 steel. Alternative target materials (stainless steel, titanium, Inconel) require application-specific calibration curves available from Bently Nevada or Konmask technical support.
Q: Do you provide ATEX/IECEx certified versions?
A: ATEX and IECEx variants are available under separate part numbers. Contact us with your hazardous area classification (Zone, Gas Group, Temperature Class) for the correct certified assembly.
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