Bently Nevada 330130-040-00-00/CN – Extension Cable | 3300 Series Proximity Transducer System
Engineering Background
The Bently Nevada 3300 Series Proximity Transducer System is the industry benchmark for non-contact vibration and position measurement in rotating machinery. The extension cable (330130-040-00-00/CN) is a precision-matched interconnect component that bridges the proximitor/driver and the transducer probe, maintaining signal integrity across the full measurement chain. Correct cable selection is critical: impedance mismatch or incorrect length directly affects gap voltage calibration and system sensitivity.
Product Positioning
This extension cable is engineered for OEM-specification replacement and new-build installations in turbomachinery protection systems, compressor trains, and generator sets where Bently Nevada 3300 Series instrumentation is specified. It is the preferred choice for maintenance engineers requiring a drop-in, calibration-verified replacement without system re-commissioning.
Complete Technical Specifications
| Part Number | 330130-040-00-00/CN |
| Brand | Bently Nevada (Baker Hughes) |
| Series | 3300 Proximity Transducer System |
| Component Type | Extension Cable |
| Cable Length | 40 ft (12.2 m) — encoded in part number suffix “-040” |
| Connector Type | MIL-spec coaxial, both ends (probe-side & proximitor-side) |
| Impedance | Matched to 3300 Series system (nominally 50 Ω coaxial) |
| Operating Temperature | –40 °C to +85 °C |
| Jacket Material | Stainless-armored / PTFE-insulated (OEM specification) |
| Variant Suffix | /CN – China-market configuration |
| Compatible Probes | 3300 XL 8mm, 3300 5mm, 3300 NSv Proximity Transducers |
| Compatible Drivers | 3300 XL Proximitor Sensor, 3300 RAM Proximitor |
| Weight | ~300 g |
| Country of Origin | USA / OEM-authorized |
Proven Application Environments
- Steam & Gas Turbines — shaft radial vibration and axial position monitoring per API 670
- Centrifugal Compressors — interstage and thrust bearing displacement measurement
- Large Electric Motors & Generators — rotor eccentricity and differential expansion
- Gearboxes & Pumps — high-speed shaft orbit analysis
- Petrochemical & Refinery Plants — continuous machinery protection in SIL-rated loops
- Power Generation (Nuclear, Thermal, Hydro) — long-term reliability in harsh environments
Engineering Advantages
- OEM-Matched Impedance — preserves factory gap voltage calibration; no field re-calibration required on replacement
- Precision Length Tolerance — ±0.1% length accuracy ensures system sensitivity remains within Bently Nevada specification
- EMI/RFI Shielding — double-shielded coaxial construction rejects electrical noise in VFD-dense environments
- Armored Jacket Option — mechanical protection against abrasion, crush, and chemical exposure in plant environments
- Plug-and-Play Replacement — keyed MIL-spec connectors prevent mis-mating; zero-tool installation
- Traceable Documentation — supplied with OEM certificate of conformance and test report on request
System Architecture & Signal Flow
The 3300 Series measurement chain operates as follows:
Probe Tip → Extension Cable (330130-040-00-00/CN) → Proximitor/Driver → Signal Conditioner → DCS / Vibration Monitor
The extension cable carries the RF oscillator signal from the proximitor to the probe, and returns the demodulated DC gap voltage back. Total system cable length (probe integral cable + extension cable) must remain within the Bently Nevada-specified range for the selected probe model to maintain ±5% sensitivity accuracy. For 3300 XL 8mm probes, the standard system length is 5 m (probe) + 12.2 m (this extension) = 17.2 m total — within the qualified 15–20 m window.
Sourcing & Quality Verification
- Source: Authorized distribution channel and verified surplus inventory — no gray-market or counterfeit stock
- Inspection: Each unit visually inspected for connector integrity, jacket condition, and part number label authenticity before shipment
- Documentation: OEM datasheet, certificate of conformance, and packing list provided with every order
- Traceability: Lot number and serial number recorded; available for audit on request
- Warranty: 12-month warranty against manufacturing defects; DOA replacement within 7 business days
Procurement Process
- Confirm Compatibility — Verify your probe model and proximitor model against the 3300 Series system compatibility matrix (available on request)
- Submit Inquiry — Contact support@konmask.com with your PO number, required quantity, and delivery timeline
- Receive Quotation — Formal quotation with lead time, unit price (HKD/USD), and shipping terms issued within 1 business day
- Order Confirmation — Submit PO; payment via T/T, L/C, or platform checkout
- Shipment & Documentation — DHL/FedEx express or sea freight; full export documentation (commercial invoice, packing list, COC) provided
- After-Sales Support — Technical support available for installation verification and system commissioning queries
Technical FAQ
Q: Can I use a different length extension cable with my existing probe?
A: Only if the total system cable length remains within the Bently Nevada-specified range for your probe model. Substituting cable lengths without recalculating total system length will shift the gap voltage and invalidate calibration. Always consult the system TDM (Technical Data Manual) before substituting.
Q: Is the /CN suffix a different electrical specification from the standard part?
A: The /CN suffix denotes the China-market configuration, which may include localized packaging and documentation. Electrically and mechanically, the part is identical to the base 330130-040-00-00 specification.
Q: What is the shelf life of an unused extension cable?
A: Indefinite when stored in original packaging in a dry, temperature-controlled environment (15–30 °C, <70% RH). Connectors should be inspected for oxidation before installation if stored >5 years.
Q: Do you provide ATEX/IECEx certified versions?
A: Bently Nevada offers ATEX/IECEx certified variants for hazardous area installations. Please specify your area classification (Zone 1/2, Gas Group, Temperature Class) when inquiring.
Q: Minimum order quantity?
A: MOQ is 1 piece. Volume pricing available for orders of 5+ units.
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