Bently Nevada 330106-05-30-50-12-CN – Reverse Mount Eddy Current Proximity Probe | 3300 XL Series
Engineering Background
The Bently Nevada 3300 XL Series represents the industry benchmark for non-contacting eddy current measurement in rotating machinery protection. The 330106-05-30-50-12-CN is a reverse-mount configuration probe engineered for installations where front-access mounting is mechanically constrained — common in high-speed turbines, compressors, and gearboxes operating in harsh industrial environments. Konmask.com supplies this probe as a verified OEM-equivalent component for MRO, capital project, and emergency replacement procurement.
Product Positioning
Designed for procurement engineers and reliability teams sourcing Bently Nevada 3300 XL compatible probes with exact dimensional and electrical interchangeability. The 330106-05-30-50-12-CN integrates directly with 3300 XL proximitor/seismic monitors without recalibration, minimizing plant downtime during replacement cycles.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 330106-05-30-50-12-CN |
| Series | Bently Nevada 3300 XL |
| Probe Type | Reverse Mount Eddy Current Proximity Probe |
| Tip Diameter | 5 mm (0.197 in) |
| Cable Length | 30 in (762 mm) |
| Termination Impedance | 50 Ω |
| Connector Thread | 12 mm |
| Configuration | CN (Standard / China Market) |
| Measurement Principle | Eddy Current (Non-contacting) |
| Linear Range | 0.25 – 2.25 mm (system dependent) |
| Supply Voltage | -24 VDC (via proximitor) |
| Output Sensitivity | 7.87 V/mm (200 mV/mil) nominal |
| Operating Temperature | -35°C to +120°C |
| Target Material | AISI 4140 Steel (standard calibration) |
| Weight | ~200 g (probe + cable assembly) |
| Compatible Monitor | Bently Nevada 3300 XL Proximitor / Seismic Monitor |
| Approvals | CE, ATEX (consult datasheet for zone ratings) |
Proven Application Environments
- Steam & Gas Turbines — Shaft radial vibration and axial position monitoring per API 670
- Centrifugal Compressors — Rotor dynamic measurement in tight bearing housings
- Gearboxes & Pumps — Reverse-mount geometry for restricted front-access installations
- Petrochemical & Refinery Plants — Continuous machinery protection in SIL-rated loops
- Power Generation — OEM replacement in GE, Siemens, and MHI turbine trains
- Marine Propulsion Systems — Vibration monitoring in confined machinery spaces
Engineering Advantages
- Reverse-Mount Design — Enables installation from the back of the bearing housing, eliminating front-access clearance requirements during maintenance
- Direct 3300 XL Compatibility — Plug-and-play replacement; no monitor reconfiguration or scale factor adjustment required
- 50 Ω Impedance Matching — Minimizes signal reflection over long cable runs in electrically noisy plant environments
- 5 mm Tip Precision — Optimized for small-diameter shaft targets and tight radial clearance applications
- High-Temperature Tolerance — Rated to 120°C continuous; suitable for hot-section turbine bearing pedestals
- Robust Cable Assembly — Armored 30-inch integral cable resists vibration fatigue and chemical exposure
System Architecture & Signal Flow
The 330106-05-30-50-12-CN operates as part of the Bently Nevada 3300 XL measurement chain:
- Probe (330106-05-30-50-12-CN) — Generates eddy current field; senses gap to rotating shaft target
- Extension Cable (330130 Series) — Transmits RF signal from probe tip to proximitor; total system cable length must match calibration
- Proximitor / Seismic Monitor (3300 XL) — Conditions signal, outputs -24 VDC drive and 0–24 VDC position/vibration analog output
- DCS / Safety System — Receives 4–20 mA or voltage signal for alarm, trip, and trending functions
Note: Total probe + extension cable length must equal the calibrated system length (typically 5 m or 9 m). Verify with your 3300 XL proximitor datasheet before ordering extension cables.
Sourcing & Quality Verification
- All units supplied by Konmask.com are sourced from authorized distribution channels or verified surplus with full traceability documentation
- Each probe is inspected for physical integrity, connector condition, and cable continuity prior to dispatch
- Certificate of Conformance (CoC) and original packaging available upon request
- Counterfeit risk mitigation: Konmask.com applies Bently Nevada part number cross-reference verification on every order
- Lead time: In-stock units ship within 2 business days; special configurations quoted within 24 hours
Procurement Process
- Confirm Part Number — Verify 330106-05-30-50-12-CN matches your existing probe label and proximitor configuration sheet
- Check System Cable Length — Confirm total probe + extension cable equals your calibrated system length
- Request Quote — Contact support@konmask.com with quantity, delivery location, and required documentation (CoC, MSDS, etc.)
- Place Order — Purchase via this listing or via PO / wire transfer for B2B accounts
- Receive & Inspect — Inspect packaging seal and part number label upon receipt before installation
Technical FAQ
Q: Can this probe replace a standard (non-reverse-mount) 330105 series probe?
A: No. The reverse-mount 330106 series has a different mechanical form factor. Confirm your bearing housing accepts reverse-mount geometry before ordering.
Q: What extension cable is compatible?
A: Bently Nevada 330130 series extension cables. Total system length (probe cable + extension) must match the proximitor calibration — typically 5 m or 9 m systems.
Q: Is this probe compatible with the 3500 series monitors?
A: The 3300 XL probe series is not directly interchangeable with 3500 series probes. Consult Bently Nevada compatibility matrices or contact Konmask.com for guidance.
Q: Do you supply ATEX-certified versions?
A: Yes. Please specify your hazardous area zone classification when requesting a quote.
Q: What is the warranty?
A: Konmask.com provides a 90-day functional warranty on all supplied units. OEM warranty terms apply to new-in-box stock.
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Contact: support@konmask.com | +0086 19859288691
