Vibration Monitoring Solution – Bently Nevada 330930-040-03-05 | 3300 Series Proximity Probe Extension Cable
The Bently Nevada 330930-040-03-05 is a 5-meter (16.4 ft) armored extension cable engineered for the 3300 Series Proximity Probe System. It bridges the gap between the proximity probe and the Proximitor® sensor, delivering low-noise, high-integrity eddy-current signals in the most demanding rotating-machinery environments. Designed to meet Baker Hughes / Bently Nevada OEM specifications, this cable is the preferred choice of reliability engineers worldwide.
Where This Product Is Used
- Steam & Gas Turbines — Shaft radial vibration and axial position monitoring on high-speed turbine trains in power generation plants.
- Centrifugal Compressors — Continuous rotor displacement measurement in petrochemical and LNG compression trains.
- Pumps & Blowers — Bearing-clearance and shaft-orbit monitoring on critical process pumps in refineries and chemical plants.
- Gearboxes — Gear-mesh vibration surveillance in paper mills, steel rolling mills, and marine propulsion systems.
- Hydro Turbines — Shaft runout and eccentricity measurement in hydroelectric generating units.
- Motor-Generator Sets — Rotor dynamic monitoring on large synchronous machines in utility and industrial facilities.
Technical Specifications
- Part Number: 330930-040-03-05
- Series: 3300 Series Proximity Probe System
- Cable Length: 5 m (16.4 ft)
- Cable Type: Armored coaxial extension cable
- Connector (Probe End): Male coaxial, compatible with 3300 XL 8mm / 11mm probes
- Connector (Proximitor End): Female coaxial, mates with 3300 Proximitor® sensor input
- Temperature Range: –55 °C to +125 °C (–67 °F to +257 °F)
- Armor Material: Stainless steel braid over PTFE-insulated coaxial core
- Impedance: 50 Ω nominal
- Weight: Approx. 230 g
- Manufacturer: Baker Hughes / Bently Nevada (USA)
Why Engineers Specify This Model
- OEM-Matched Signal Chain — Maintains the calibrated sensitivity (200 mV/mil, 7.87 V/mm) of the complete 3300 probe-cable-Proximitor® system without field re-calibration.
- Stainless Steel Armor — Resists mechanical abrasion, rodent damage, and chemical splash in harsh plant environments.
- PTFE Dielectric — Ensures stable capacitance and low signal loss across the full operating temperature range.
- Direct OEM Replacement — Drop-in fit for existing 3300 Series installations; no adapter or re-wiring required.
- Vibration & Shock Rated — Qualified to withstand the mechanical stress of turbomachinery baseplate environments.
Complete System Bill of Materials
For a fully functional 3300 Series eddy-current measurement loop, the following components are required:
- Proximity Probe — e.g., Bently Nevada 330101-00-06-10-02-00 (8 mm, 0.5 m integral cable)
- Extension Cable — 330930-040-03-05 (this item, 5 m)
- Proximitor® Sensor — e.g., Bently Nevada 330180-X1-05 (3300 XL 8mm Proximitor®)
- Signal Conditioner / Monitor — e.g., Bently Nevada 3500/42M Proximitor® / Velomitor® Monitor
- Barrier / Zener Barrier (if installed in hazardous area) — e.g., MTL 787S+
Compliance & Industry Standards
- API 670 — Machinery Protection Systems (5th Edition): cable system meets signal-integrity requirements for radial vibration, axial position, and speed channels.
- IEC 61511 / IEC 61508 — Functional Safety: compatible with SIL-rated protection loops when used with certified Proximitor® sensors and monitors.
- ATEX / IECEx — Suitable for use in Zone 1 / Zone 2 hazardous areas when installed with appropriate certified barriers (consult site safety documentation).
- RoHS Compliant — Manufactured without restricted hazardous substances.
Quality Assurance & Sourcing
- Every unit is inspected for connector integrity, armor continuity, and coaxial impedance before dispatch.
- Sourced from authorized Baker Hughes / Bently Nevada distribution channels or verified surplus with full traceability documentation.
- Packaging preserves connector cleanliness; each cable ships with protective end caps.
- Certificate of conformance available upon request for critical-service applications.
How to Source This Part
To place an order or request a quotation for the Bently Nevada 330930-040-03-05:
- Add to cart directly on this page for standard lead times.
- Email [email protected] for volume pricing, expedited shipping, or documentation packages.
- Call / WhatsApp: +0086 19859288691 for urgent plant-shutdown requirements.
- Provide your PO number, required delivery date, and shipping address for fastest processing.
Application-Specific FAQ
Q: Can I use the 330930-040-03-05 with 11 mm probes?
A: The 330930 series extension cables are designed for the 3300 XL 8 mm probe system. For 11 mm probes, verify connector compatibility with the specific Proximitor® model before installation.
Q: What is the maximum total cable length for a 3300 Series loop?
A: Bently Nevada specifies a maximum combined probe + extension cable length of 9 m (29.5 ft) for standard 3300 XL 8 mm systems. The 5 m extension (330930-040-03-05) is compatible with 0.5 m, 1 m, and up to 4 m integral probe cables within this limit.
Q: Is re-calibration required after replacing the extension cable?
A: No, provided the replacement cable is the same OEM part number and the probe and Proximitor® remain unchanged. The system sensitivity is set by the matched probe-cable-Proximitor® combination.
Q: Can this cable be used in a hazardous (classified) area?
A: Yes, when installed with an appropriate certified Zener barrier or galvanic isolator per your site’s area classification and the Bently Nevada installation drawing. Consult your site safety engineer.
Q: Do you supply a certificate of conformance?
A: Yes. Request a CoC at the time of order via [email protected].
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