Bently Nevada 330130-045-01-05 Extension Cable – Proximitor Signal Extension | 3300 Series Platform
Engineering Background: The Bently Nevada 3300 Series is the industry benchmark for machinery protection and condition monitoring in rotating equipment applications. Deployed across turbines, compressors, pumps, and motors worldwide, the 3300 platform relies on a precisely matched three-component measurement chain: eddy-current probe, extension cable, and Proximitor sensor. The 330130-045-01-05 is the factory-specified extension cable engineered to maintain signal integrity across the full measurement chain.
Product Positioning: The 330130-045-01-05 extension cable serves as the critical signal conduit between the 3300 Series eddy-current probe and the Proximitor sensor. With a 4.5-meter (approximately 15 ft) cable length and the -01-05 configuration designating standard armor and connector termination, this cable is designed for permanent installation in harsh industrial environments where vibration, temperature cycling, and chemical exposure are routine. It is not a generic coaxial cable — it is a calibrated component whose electrical characteristics (capacitance, impedance, and attenuation) are matched to the Proximitor’s internal compensation circuitry.
Complete Technical Specifications
| Part Number | 330130-045-01-05 |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Series / Platform | 3300 Series Proximitor System |
| Component Type | Extension Cable (Signal Interconnect) |
| Cable Length | 4.5 m (≈ 14.76 ft) |
| Configuration Code | -01-05 (Standard armor, standard connectors) |
| Connector Type | Coaxial, factory-terminated both ends |
| Impedance | Matched to 3300 Series Proximitor specification |
| Operating Temperature | -40°C to +125°C |
| Cable Construction | Armored, shielded coaxial |
| Compatible Probes | 3300 Series 8mm eddy-current probes (330101, 330103, 330104, 330105) |
| Compatible Proximitors | 3300 XL 8mm Proximitor Sensor (330180, 330181) |
| System Total Cable Length | Probe + Extension = 5.0 m standard system |
| Approvals / Compliance | CE, ATEX (consult datasheet for zone ratings) |
| Weight | Approx. 1,000 g |
| Country of Origin | USA |
Proven Application Environments
- Steam & Gas Turbines — Shaft radial vibration and axial position monitoring on high-speed rotating machinery
- Centrifugal Compressors — Continuous proximity measurement in high-pressure, high-temperature casings
- Pumps & Fans — Bearing housing vibration monitoring for predictive maintenance programs
- Electric Motors (Large Frame) — Shaft orbit and eccentricity measurement
- Gearboxes — Gear mesh frequency and shaft displacement monitoring
- Marine Propulsion Systems — Vibration monitoring in salt-air and high-humidity environments
- Petrochemical & Refinery Plants — API 670-compliant machinery protection systems
- Power Generation — Turbine-generator sets requiring continuous online monitoring
Engineering Advantages
- Calibrated Electrical Match: The 330130 cable is not a generic coaxial assembly. Its capacitance and impedance are factory-trimmed to integrate with the Proximitor’s internal linearization and compensation circuits — substituting an uncalibrated cable will introduce measurement error and may trigger false alarms or missed trips.
- Armored Construction: The -01 armor designation provides mechanical protection against abrasion, rodent damage, and installation stress in cable trays and conduit runs common in industrial plants.
- Temperature Stability: Rated to +125°C continuous, the cable maintains stable electrical characteristics across the full operating range of turbine bearing housings and compressor casings.
- EMI/RFI Shielding: Double-shielded construction rejects interference from VFDs, high-current bus bars, and RF sources common in industrial environments.
- Factory-Terminated Connectors: Both ends are precision-terminated and tested at the factory, eliminating field-termination errors that are a leading cause of measurement chain failures.
- API 670 Compliance: Designed to meet the requirements of API Standard 670 (Machinery Protection Systems), the governing specification for critical rotating equipment monitoring in the oil & gas industry.
System Architecture & Signal Flow
The Bently Nevada 3300 Series measurement chain operates as a three-component system. Understanding the signal flow is essential for correct installation and troubleshooting:
- Eddy-Current Probe (e.g., 330101-00-06-10-02-00) — Generates a high-frequency electromagnetic field. Gap between probe tip and target shaft surface modulates the field, producing a voltage proportional to displacement.
- Extension Cable 330130-045-01-05 — Transmits the modulated RF signal from the probe (installed at the bearing housing) back to the Proximitor sensor (typically mounted in a junction box or instrument rack, up to 5 m from the probe). The cable’s matched impedance ensures no signal reflection or attenuation beyond the Proximitor’s compensation range.
- Proximitor Sensor (e.g., 330180-X1-05) — Demodulates the RF signal, applies temperature compensation, and outputs a DC voltage (typically -24 VDC at 200 mil gap) proportional to shaft displacement. This output feeds the 3300 Series monitor rack (e.g., 3300/16 or 3500/42M).
Critical Note: The total probe + extension cable length must match the Proximitor’s calibrated range. The 330130-045 (4.5 m extension) is designed for use with a 0.5 m probe cable, yielding a 5.0 m total system — the standard calibrated length for 3300 XL 8mm systems.
Sourcing & Quality Verification
- OEM Traceability: All units sourced by Konmask.com are verified against Bently Nevada part number databases. We do not supply rebranded or counterfeit assemblies.
- Inspection Protocol: Each cable is inspected for connector integrity, armor continuity, and shield termination before shipment. Electrical continuity and insulation resistance are verified.
- Packaging: Shipped in original or equivalent protective packaging with part number label, serial number (where applicable), and certificate of conformance.
- Condition: New (OEM), Refurbished (tested to OEM spec), or Surplus (inspected, with condition report) — specify your requirement at inquiry.
- Lead Time: In-stock units ship within 2 business days. Out-of-stock lead time typically 2–4 weeks depending on sourcing channel.
Procurement Process
- Submit Inquiry: Email support@konmask.com or call +0086 19859288691 with your part number (330130-045-01-05), required quantity, and delivery timeline.
- Receive Quotation: We will respond within 4 business hours with pricing, availability, and lead time confirmation.
- Order Confirmation: Submit a Purchase Order (PO) or proceed via the online checkout. We accept T/T bank transfer, PayPal, and major credit cards.
- Quality Documentation: Certificate of Conformance, packing list, and commercial invoice provided with every shipment. ATEX/IECEx certificates available on request.
- Shipping: DHL Express, FedEx International Priority, or sea freight for bulk orders. Export documentation (HS Code 8544.42) handled by Konmask.
Technical FAQ
Q: Can I use a standard RG-58 coaxial cable as a substitute for the 330130-045-01-05?
A: No. The 330130 cable has specific capacitance and impedance characteristics matched to the Proximitor’s internal calibration. Using a generic coaxial cable will result in measurement errors, incorrect gap voltage output, and potential false machinery trips or missed alarm conditions.
Q: What is the difference between 330130-045-01-05 and 330130-045-00-05?
A: The -01 vs -00 designation refers to the armor configuration. -01 indicates standard stainless steel armor for mechanical protection; -00 is the unarmored version for installations where the cable is routed through conduit or protected cable trays. Electrically, both are identical.
Q: Can this cable be used with the 3500 Series monitors?
A: Yes, provided the Proximitor sensor is a 3300 Series unit. The 3500 Series monitor rack accepts the same DC voltage output from the Proximitor. The cable itself is part of the probe-to-Proximitor chain, not the Proximitor-to-monitor connection.
Q: What happens if the extension cable is damaged in the field?
A: A damaged extension cable (broken shield, connector damage, or armor breach) will typically manifest as increased noise on the vibration signal, erratic gap voltage, or a “not OK” status on the Proximitor. The cable must be replaced as a complete assembly — field splicing is not recommended and will void calibration.
Q: Is the 330130-045-01-05 compatible with the 7200 Series Proximitor?
A: No. The 7200 Series uses a different probe and cable system (part numbers in the 330705/330730 range). The 330130 series is specific to the 3300 XL 8mm system.
Q: Do you provide calibration certificates?
A: Factory calibration is inherent to the matched-system design. Individual cable calibration certificates are not standard; however, we can provide OEM test reports and certificates of conformance. For critical applications, we recommend verifying the complete measurement chain (probe + cable + Proximitor) using a Bently Nevada calibration fixture after installation.
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