Bently Nevada 330905-00-10-05-02-05 – High-Accuracy Proximity Transducer System | 3300 XL NSv Platform
Engineering Background: The Bently Nevada 3300 XL NSv series represents the industry benchmark for non-contacting eddy-current proximity measurement in rotating machinery protection and condition monitoring. Designed to meet API 670 requirements, this transducer system delivers sub-micron resolution for radial vibration, axial position, and differential expansion measurement on critical turbomachinery assets including steam turbines, gas turbines, compressors, and pumps.
Product Positioning: Part number 330905-00-10-05-02-05 is a complete proximity transducer system comprising a matched probe, extension cable, and Proximitor® sensor. The system is factory-calibrated as a matched set, ensuring traceability and measurement accuracy across the full operating range. It is the preferred choice for OEM integrators, EPC contractors, and plant reliability engineers requiring certified, drop-in-compatible replacement components for existing 3300 XL installations.
Complete Technical Specifications
- Part Number: 330905-00-10-05-02-05
- Series / Platform: Bently Nevada 3300 XL NSv Proximity Transducer System
- Measurement Type: Non-contacting eddy-current (radial vibration, axial position, differential expansion)
- Probe Tip Diameter: 8 mm (standard)
- Linear Range: 2.0 mm (80 mil) nominal
- Scale Factor: 7.87 V/mm (200 mV/mil)
- Frequency Response: DC to 10,000 Hz (–3 dB)
- Operating Temperature: –35°C to +177°C (probe); –35°C to +85°C (Proximitor® sensor)
- Supply Voltage: –24 VDC (nominal)
- Output Voltage Range: –1 VDC to –21 VDC
- Extension Cable Length: 5.0 m (standard configuration)
- Connector Type: Integral coaxial, MIL-spec compatible
- Approvals / Certifications: CE, ATEX, IECEx (intrinsically safe configurations available)
- Compliance Standard: API 670 (5th Edition)
- Weight: Approx. 200 g (complete system)
- Country of Origin: United States
Proven Application Environments
- Steam turbine radial bearing vibration monitoring (power generation)
- Gas turbine axial thrust position measurement (oil & gas)
- Centrifugal compressor shaft differential expansion (petrochemical)
- Boiler feed pump vibration protection (utility plants)
- Gearbox and motor shaft eccentricity measurement (heavy industry)
- Retrofit and direct replacement for legacy 3300 XL installations
Engineering Advantages
- Factory-Matched System: Probe, cable, and Proximitor® sensor are calibrated as a matched set — eliminates field calibration errors and ensures API 670 traceability.
- NSv Technology: Non-Standard Voltage output option provides enhanced noise immunity in high-EMI environments typical of large rotating machinery.
- Wide Temperature Range: Probe rated to +177°C enables direct installation in high-temperature bearing housings without thermal barriers.
- Drop-In Compatibility: Fully backward-compatible with existing 3300 XL monitor racks (3300/16, 3300/20, 3500 series) — no rack modifications required.
- Long-Term Availability: Sourced from authorized distribution channels with full OEM documentation and serialization.
System Architecture & Signal Flow
The 330905-00-10-05-02-05 operates as a three-component eddy-current measurement chain:
- Probe (Tip): Generates a high-frequency electromagnetic field (oscillator-driven). Eddy currents induced in the target shaft attenuate the field proportionally to gap distance.
- Extension Cable: Transmits the RF signal from probe to Proximitor® sensor with controlled impedance. Cable length is a calibrated parameter — substitution invalidates system accuracy.
- Proximitor® Sensor (Driver/Oscillator): Demodulates the RF signal and outputs a DC voltage linearly proportional to probe-to-target gap. Output feeds directly into 3300/3500 series monitor input cards.
Signal output: –1 VDC (near gap) to –21 VDC (far gap), with a nominal scale factor of 7.87 V/mm across the 2.0 mm linear range.
Sourcing & Quality Verification
- All units sourced through verified industrial supply channels with full chain-of-custody documentation.
- Each system inspected for physical integrity, connector condition, and label/serialization legibility prior to dispatch.
- OEM datasheet and calibration records available upon request for critical-service applications.
- Konmask.com specializes in genuine, traceable Bently Nevada components — no gray-market or counterfeit stock.
Procurement Process
- Confirm Part Number: Verify 330905-00-10-05-02-05 against your BOM or existing installation tag.
- Request Quote: Contact support@konmask.com for volume pricing, lead time, and export documentation.
- Order & Payment: Secure checkout via Konmask.com; T/T wire transfer and major cards accepted.
- Shipping: DHL / FedEx express worldwide; export-controlled items shipped with full EX1/EEI documentation.
- After-Sales: Technical support available for installation verification and system commissioning queries.
Technical FAQ
Q: Can I use a different extension cable length with this probe?
A: No. The probe, cable, and Proximitor® sensor are a factory-matched set. Substituting cable length changes the system’s electrical characteristics and invalidates the calibration. Always replace as a complete system.
Q: Is this part compatible with the Bently Nevada 3500 monitoring rack?
A: Yes. The 3300 XL NSv transducer system is electrically compatible with 3500 series monitor input cards. Verify the specific card’s input specification against the NSv output range (–1 to –21 VDC) before installation.
Q: What target material is required for accurate measurement?
A: The system is calibrated for AISI 4140 steel (standard shaft material). For non-standard alloys (stainless, Inconel, titanium), a material correction factor must be applied. Contact our technical team for correction factor data.
Q: Do you provide a certificate of conformance (CoC)?
A: Yes. A CoC is available upon request at time of order. For safety-critical applications, please specify your documentation requirements in your purchase inquiry.
Q: What is the typical lead time?
A: In-stock units ship within 1–3 business days. For out-of-stock items, lead time is typically 2–4 weeks. Contact us for real-time availability.
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