Bently Nevada 330903-00-05-10-02-05/CN – High-Precision Proximity Probe Extension Cable | 3300 NSv System Platform
Engineering Background: The Bently Nevada 3300 NSv (Non-contact Shaft Vibration) system is the industry benchmark for continuous machinery protection in rotating equipment applications. Deployed across power generation, oil & gas, and petrochemical facilities worldwide, the 3300 NSv platform delivers real-time shaft vibration, position, and speed data to plant DCS and safety systems. The extension cable is a precision-engineered signal transmission component that bridges the proximity probe and the proximitor/driver, maintaining signal integrity across the full measurement chain.
Product Positioning: The 330903-00-05-10-02-05/CN is a factory-specified extension cable designed exclusively for the Bently Nevada 3300 NSv proximity probe system. With a 5-meter probe cable, 2-meter extension, and CN-type connector termination, this part number encodes the exact mechanical and electrical configuration required for precise gap voltage calibration and API 670 compliance. It is not interchangeable with generic coaxial cable — only OEM-specified cables preserve the system’s ±0.5% full-scale accuracy.
Complete Technical Specifications
- Part Number: 330903-00-05-10-02-05/CN
- Brand / Manufacturer: Bently Nevada (Baker Hughes)
- Series / Platform: 3300 NSv Proximity Probe System
- Cable Type: Extension Cable (Proximitor-side)
- Probe Cable Length: 5 m (16.4 ft)
- Extension Cable Length: 2 m (6.6 ft)
- Total System Cable Length: 7 m (22.9 ft)
- Connector Type: CN (Coaxial, factory-terminated)
- Characteristic Impedance: 50 Ω (matched to 3300 NSv system)
- Operating Temperature: -40°C to +121°C (-40°F to +250°F)
- Jacket Material: Stainless steel armored / PTFE-insulated inner conductor
- Compatibility: Bently Nevada 3300 NSv Proximitor, 3300 XL 8mm Probe
- Weight: Approx. 40 g
- Certifications: CE, API 670 compliant system component
Proven Application Environments
- Steam & Gas Turbines: Shaft radial vibration and axial position monitoring on high-speed turbine trains; critical for trip/alarm setpoint integrity per API 670.
- Centrifugal Compressors: Continuous rotor dynamic monitoring in gas compression trains; extension cable routes from probe tip through bearing housing to proximitor mounted in junction box.
- Boiler Feed Pumps (BFP): High-temperature environments in power plant boiler houses where cable must withstand sustained elevated ambient temperatures.
- Gearboxes & Expanders: Speed and eccentricity measurement on auxiliary rotating machinery in refinery and chemical plant service.
- Motor-Generator Sets: Shaft position monitoring for large synchronous machines in utility and industrial power applications.
- Offshore Platforms: Marine-grade installations where corrosion resistance and cable integrity under vibration are mandatory.
Engineering Advantages
- OEM Signal Integrity: Factory-matched cable capacitance and impedance ensure the 3300 NSv system’s linear output range (−2 V to −18 V DC) is preserved without recalibration.
- API 670 Compliance: As a system-specified component, this cable is required for installations that must meet API 670 5th Edition machinery protection standards.
- Temperature Resilience: PTFE dielectric and stainless armor maintain electrical performance at sustained high ambient temperatures common in turbine bearing pedestals.
- Plug-and-Play Replacement: CN connector termination is factory-crimped and tested — no field termination required, eliminating installation error and reducing MTTR.
- Traceability: Each cable carries Bently Nevada part number marking for maintenance records and audit compliance.
System Architecture & Signal Flow
In a complete 3300 NSv measurement loop, the signal path is: Probe Tip → Probe Cable (5 m) → Extension Cable (2 m, this part) → Proximitor/Driver → Monitor Module → DCS/Safety System. The extension cable carries the high-frequency eddy-current oscillator signal (typically 1 MHz) from the probe back to the proximitor. Any impedance mismatch, capacitance deviation, or connector contact resistance in this segment directly corrupts the gap voltage output. Using the OEM-specified 330903-00-05-10-02-05/CN eliminates this risk and maintains factory calibration validity.
Sourcing & Quality Verification
- All units sourced from authorized Bently Nevada (Baker Hughes) distribution channels or verified surplus with full traceability documentation.
- Pre-shipment inspection includes: visual inspection of connector terminations, jacket integrity check, and continuity/impedance verification.
- Serialization and date codes are verified against Bently Nevada manufacturing records where available.
- Konmask.com maintains a quality hold process — any unit failing inspection is quarantined and not shipped.
Procurement Process
- Confirm part number 330903-00-05-10-02-05/CN matches your system’s cable length and connector configuration.
- Add to cart and proceed to checkout — we accept T/T bank transfer, PayPal, and major credit cards.
- For urgent plant shutdowns or turnaround projects, contact [email protected] or call +0086 19859288691 for expedited processing.
- Export documentation (commercial invoice, packing list, COO) provided for international shipments.
- Lead time: in-stock units ship within 1–3 business days; ETA confirmed at order placement.
Technical FAQ
Q: Can I use a generic coaxial cable instead of 330903-00-05-10-02-05/CN?
A: No. The 3300 NSv system is calibrated as a matched set (probe + extension cable + proximitor). Substituting a non-OEM cable changes the system capacitance and invalidates the factory calibration, resulting in incorrect gap voltage output and potential false trips or missed alarms.
Q: What is the difference between the probe cable and the extension cable?
A: The probe cable is the armored cable attached directly to the proximity probe body (5 m in this configuration). The extension cable (this part) connects the probe cable’s free end to the proximitor input. Together they form the complete signal transmission path.
Q: Is this cable compatible with the older 3300 XL system?
A: The 3300 NSv and 3300 XL systems share the same probe/cable/proximitor architecture. Verify your proximitor model number and required cable lengths before ordering. Contact us if you need cross-reference assistance.
Q: Do you provide calibration certificates with the cable?
A: We provide available OEM documentation. For new units from authorized stock, Bently Nevada factory test records may be available. Contact us with your specific compliance requirements.
Q: What is the CN connector type?
A: CN refers to the Bently Nevada proprietary coaxial connector used on the proximitor input side. It is a push-and-lock style connector that ensures consistent contact resistance and is not interchangeable with standard BNC or SMA connectors.
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