Bently Nevada 330930-065-04-05 Extension Cable | 3300 Series Proximity Probe System
Engineering Background
The Bently Nevada 3300 Series is the industry benchmark for continuous vibration monitoring in rotating machinery — deployed across gas turbines, steam turbines, compressors, and pumps in power generation, oil & gas, and petrochemical facilities worldwide. The proximity probe system (probe + extension cable + proximitor) forms a precision eddy-current measurement chain where every component must meet exact electrical specifications to maintain calibrated output.
Product Positioning
The 330930-065-04-05 is a factory-specified extension cable engineered to connect the 3300 Series proximity probe to its proximitor/driver module. It maintains the precise capacitance, inductance, and impedance characteristics required for accurate gap voltage output, ensuring measurement integrity in harsh industrial environments with high EMI, vibration, and temperature exposure.
Complete Technical Specifications
| Part Number | 330930-065-04-05 |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Series | 3300 Series Proximity Probe System |
| Component Type | Extension Cable |
| Cable Length | 6.5 m (21.3 ft) |
| Connector Type | MIL-spec coaxial, both ends |
| Jacket Material | Armored / stainless-braid shielded |
| Operating Temperature | -35°C to +121°C (-31°F to +250°F) |
| Impedance | Matched to 3300 Series system specification |
| Compatibility | 3300 Series 8mm & 5mm proximity probes and proximitor modules |
| Weight | 120 g (approx.) |
| Condition | New / Surplus New / Refurbished (specify on inquiry) |
Proven Application Environments
- Gas turbine and steam turbine shaft vibration monitoring
- Centrifugal and reciprocating compressor radial/axial displacement measurement
- Pump and motor bearing condition monitoring
- Power generation plant continuous machinery protection systems
- Offshore platform and FPSO rotating equipment surveillance
- Petrochemical and refinery critical machinery trains
Engineering Advantages
- OEM-matched impedance: Preserves the calibrated scale factor of the 3300 Series probe/proximitor pair — no field recalibration required when replacing like-for-like.
- EMI/RFI shielding: Stainless-braid armor suppresses electrical noise in high-interference plant environments, protecting signal fidelity.
- Temperature-rated jacket: Withstands turbine bearing housing temperatures and steam environments without insulation degradation.
- Secure MIL-spec connectors: Vibration-resistant locking connectors prevent intermittent signal loss under continuous machinery vibration.
- Drop-in replacement: Direct OEM form-fit-function replacement; no wiring modification or system reconfiguration required.
System Architecture & Signal Flow
In the 3300 Series eddy-current measurement chain:
- Proximity Probe — mounted at the shaft, generates the eddy-current field.
- Extension Cable (330930-065-04-05) — transmits the high-frequency RF signal from probe tip to proximitor with controlled impedance.
- Proximitor/Driver Module — conditions the signal and outputs a calibrated DC voltage (typically −18 VDC at 50 mil gap for 8 mm probes).
- Monitor/Rack — processes the DC output for vibration, position, and alarm functions.
Substituting a non-OEM or mismatched cable disrupts the impedance balance of this chain, introducing scale factor error and potentially triggering false alarms or masking real machinery faults.
Sourcing & Quality Verification
- All units sourced from authorized distributors, OEM surplus, or certified refurbishers.
- Physical inspection: connector integrity, jacket condition, shield continuity verified prior to shipment.
- Traceability documentation available on request (COC, test reports).
- Konmask.com specializes in genuine and surplus Bently Nevada components — not counterfeit or reverse-engineered substitutes.
Procurement Process
- Submit your inquiry with required quantity and delivery timeline via [email protected] or +0086 19859288691.
- Receive a formal quotation with lead time, condition grade, and documentation package within 24 hours.
- Confirm order — payment via T/T, PayPal, or trade terms for qualified accounts.
- Shipment with full tracking; express options (DHL/FedEx) available for urgent plant requirements.
Technical FAQ
Q: Can I use a different length extension cable with my existing probe and proximitor?
A: No. The 3300 Series system is calibrated as a matched set (probe + specific cable length + proximitor). Changing cable length alters the system’s total capacitance and will shift the scale factor. Always replace with the identical part number.
Q: What is the difference between part numbers 330930-065-04-05 and 330930-065-01-00?
A: The suffix encodes connector type and jacket configuration. The -04-05 variant specifies a particular connector/armor combination — confirm your existing cable’s suffix before ordering to ensure exact compatibility.
Q: Is this cable compatible with the 3500 Series monitors?
A: The 3300 Series extension cables are designed for 3300 Series proximitor modules. While some cross-compatibility exists, Bently Nevada recommends using series-matched components. Contact us to verify compatibility with your specific monitor rack.
Q: Do you provide calibration certificates?
A: Calibration certificates are available for refurbished units. New/surplus units ship with manufacturer documentation where available. Specify your documentation requirements at time of inquiry.
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Contact: [email protected] | +0086 19859288691
