Bently Nevada 330904-00-03-50-02-00 – Non-Contact Shaft Vibration Measurement | 3300 XL NSv Proximity Transducer System
Engineering Background: The Bently Nevada 3300 XL NSv (Non-Standard voltage) Proximity Transducer System is a precision eddy-current sensing solution engineered for continuous, non-contact measurement of shaft radial vibration, axial position, and differential expansion in rotating machinery. Developed under Bently Nevada’s industry-leading condition monitoring philosophy, this system is the preferred choice for turbines, compressors, pumps, and gearboxes operating in critical process environments.
Product Positioning: Part number 330904-00-03-50-02-00 represents a fully configured transducer system comprising a probe, extension cable, and proximitor/oscillator-demodulator. It is designed for direct integration with Bently Nevada 3300 series monitoring racks and is compatible with System 1 condition monitoring software. This unit is sourced, inspected, and verified by Konmask.com for procurement engineers requiring traceable, OEM-grade components.
Complete Technical Specifications
- Part Number: 330904-00-03-50-02-00
- Series / Platform: Bently Nevada 3300 XL NSv
- Measurement Type: Eddy-current, non-contact proximity
- Measured Parameters: Radial shaft vibration, axial position, differential expansion
- Probe Tip Diameter: 8 mm (standard)
- Cable Length (Extension): 5.0 m (per part number suffix -50-)
- Output Signal: NSv (Non-Standard voltage) DC output
- Supply Voltage: -24 VDC (nominal)
- Frequency Range: DC to 10,000 Hz
- Operating Temperature: -35°C to +121°C (probe); -35°C to +85°C (proximitor)
- Target Material: AISI 4140 steel (standard calibration)
- Linear Range: 0.25 mm to 2.54 mm (10 mil to 100 mil)
- Scale Factor: 7.87 V/mm (200 mV/mil) nominal
- Connector Type: Integral coaxial, field-replaceable
- Approvals / Certifications: CE, ATEX, FM (refer to current Bently Nevada datasheet for region-specific listings)
- Weight: Approx. 40 g (probe assembly)
- Country of Origin: USA
Proven Application Environments
- Steam and gas turbines (power generation, petrochemical)
- Centrifugal and axial compressors (upstream oil & gas, LNG)
- High-speed pumps and motor-driven equipment
- Gearboxes and expanders in refinery service
- Rotating machinery protected under API 670 machinery protection standards
- Continuous online condition monitoring systems integrated with DCS/PLC
Engineering Advantages
- Non-contact measurement eliminates mechanical wear and enables indefinite service life
- NSv output provides direct compatibility with 3300 XL monitoring modules without signal conditioning
- Wide temperature range supports installation in high-heat turbine bearing housings
- Factory-matched system (probe + cable + proximitor) ensures calibrated scale factor accuracy out of the box
- Plug-and-play replacement for existing 3300 XL installations — no rack reconfiguration required
- Traceable calibration — each system ships with documentation supporting ISO 9001 maintenance records
System Architecture & Signal Flow
The 330904-00-03-50-02-00 operates as a three-component eddy-current system:
- Probe (330904): Generates a high-frequency electromagnetic field at the probe tip; detects changes in target distance via impedance variation.
- Extension Cable (-50-): 5-metre coaxial cable transmits the RF signal between probe and proximitor with minimal signal loss.
- Proximitor/Oscillator-Demodulator (-02-00): Converts the RF impedance signal into a calibrated DC voltage proportional to gap distance; outputs NSv signal to the monitoring rack input card.
Signal output feeds directly into Bently Nevada 3300 XL monitor input channels, enabling real-time vibration and position data acquisition within System 1 or third-party SCADA/DCS platforms via 4–20 mA or Modbus interfaces.
Sourcing & Quality Verification
- Units sourced from authorized distribution channels and verified OEM surplus inventory
- Each unit undergoes visual inspection, connector integrity check, and functional verification prior to dispatch
- Serialization and labeling cross-checked against Bently Nevada part number matrix
- Packaging: anti-static, moisture-barrier bag with rigid outer carton; suitable for international air freight
- Documentation available: datasheet, calibration reference, and commercial invoice upon request
Procurement Process
- Step 1: Confirm part number 330904-00-03-50-02-00 matches your rack slot and cable run requirement
- Step 2: Submit inquiry or place order via Konmask.com product page
- Step 3: Receive proforma invoice with lead time and shipping options (DHL / FedEx / sea freight)
- Step 4: Payment via T/T, PayPal, or credit card; export documentation prepared for customs clearance
- Step 5: Shipment with tracking; technical support available post-delivery for installation queries
Technical FAQ
Q: Is this system compatible with the Bently Nevada 3500 series rack?
A: No. The 330904 series is designed for the 3300 XL platform. For 3500 series compatibility, refer to the 330180 or 330730 probe families.
Q: Can the extension cable length be customized?
A: The -50- suffix denotes a 5-metre extension. Other standard lengths (1 m, 3 m, 9 m) are available as separate part numbers. Custom lengths require factory order.
Q: What target material is the scale factor calibrated for?
A: Standard calibration is for AISI 4140 steel. For non-standard target materials (e.g., titanium, Inconel), a correction factor must be applied per Bently Nevada application note.
Q: Is a spare proximitor available separately?
A: Yes. The proximitor module can be ordered independently. Contact Konmask.com with your specific suffix requirements.
Q: What is the typical lead time?
A: In-stock units ship within 3–5 business days. Ex-stock international delivery is typically 5–10 business days via express courier.
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