Engineering Product Overview
The Bently Nevada 330704-000-050-10-02-05 is a premium 3300 XL 11 mm metric proximity probe designed for linear measurement ranges exceeding standard 8 mm systems. Featuring an M14 x 1.5 thread and flexible stainless steel armor, this eddy current sensor delivers non-contact shaft displacement and dynamic vibration tracking. It arrives brand new in original factory packing and carries a full 12-month factory warranty.
To verify technical installation requirements or obtain complete field wiring diagrams, download the manufacturer documentation.
Download Official Manual and Datasheet
For urgent price quotes or immediate technical assistance, contact our application team via email at info@oiltechcontrols.com or message us directly on WhatsApp at +86 158 8020 0923.
Configuration Breakdown & Option Matrix
| Option Code | Specification Details | Engineered Value |
|---|---|---|
| 330704 | Base Model designation | 3300 XL 11 mm Probe, M14 x 1.5 thread, with flexible armor |
| 000 | Unthreaded Length Option | 00 mm unthreaded section |
| 050 | Overall Case Length Option | 50 mm overall case length |
| 10 | Total Length Option | 1.0 metre (3.3 feet) overall length |
| 02 | Connector Type | Miniature coaxial ClickLoc connector, standard triaxial cable |
| 05 | Agency Approval Option | Multiple Hazardous Area Approvals (ATEX, IECEx, CSA, Class I Div 1/2) |
Technical Data
| Manufacturer & Brand | Bently Nevada |
| Part Number | 330704-000-050-10-02-05 |
| Product Series | 3300 XL 11 mm Proximity Transducer System |
| Linear Measurement Range | 4.0 mm (160 mils) extended linear range (starts at 0.5 mm gap) |
| Scale Factor & Linearity | 3.94 V/mm (100 mV/mil) incremental scale factor ±10% |
| DC Resistance (RPROBE) | 5.9 ± 0.5 ohms (center to outer conductor for 1m length) |
| 60 Hz Field Immunity | 0.001 mil pp/gauss at 0.5 mm gap; 0.027 mil pp/gauss at 4.6 mm gap |
| Materials of Construction | AISI 304 Stainless Steel case, PPS tip, FEP insulated 75 Ω triaxial cable |
| Thread & Mechanical Case | M14 x 1.5 metric thread; maximum thread engagement 21 mm |
| Installation Torque Limits | Recommended: 21.1 N•m (187 in•lb) | Max: 63.3 N•m (560 in•lb) |
| Operating Temperature | -52°C to +177°C (-62°F to +351°F) continuous body range |
| ATEX/IECEx Classification | Ex EPL Ga/Gc: T1 (-55°C to +232°C) down to T5 (-55°C to +40°C) |
Target Applications, Equipment, and Diagnostic Capabilities
- Large steam turbine-generator thrust bearing position tracking
- Heavy industrial hydro-turbines with large axial shaft movement
- High-power centrifugal boiler feed pumps requiring wide linear span
- Reciprocating compressor rod drop and dynamic position monitoring
- Detection of axial float, shaft thermal expansion, and severe oil film collapse
- Seamless integration into Bently Nevada 3500/42M vibration monitoring racks
Oiltech Controls Limited’s Insight
In large rotating machinery, standard 8 mm probes often reach their physical measurement limit due to thermal growth or severe thrust movement. The 3300 XL 11 mm probe solves this by offering double the linear range (4.0 mm) of an 8 mm probe. The 330704-000-050-10-02-05 option provides robust armor protection for high-vibration environments near machine casings. Installing the 1.0-metre probe directly into a field junction box ensures short, noise-immune cable runs.
Commercial Terms, Packaging, and Shipping
- Item Condition: Factory sealed 100% genuine original packing
- Warranty Coverage: Comprehensive 12-Month Factory Warranty
- Dispatch Lead Time: Ships within 12 to 48 hours from ready stock
- Logistics Network: Expedited worldwide delivery via FedEx, UPS, or DHL
- Sales Contact: Reach out to info@oiltechcontrols.com or WhatsApp +86 158 8020 0923 for immediate order confirmation
Field FAQ & Technical Procurement Guide
Q: Why should an engineer select an 11 mm probe over an 8 mm probe for thrust measurements?
A: The 11 mm system provides a 4.0 mm (160 mil) linear range, which prevents signal saturation during extreme shaft axial movement where an 8 mm probe runs out of linear span.
Q: What happens if the M14 x 1.5 probe case is over-torqued during field mounting?
A: Exceeding the maximum rated torque of 63.3 N•m (560 in•lb) can distort the internal coil assembly or strip the case threads. Always target the recommended 21.1 N•m (187 in•lb) limit.
Q: Can the probe withstand long-term sub-zero operation in cold climates?
A: While rated for -52°C operating ambient conditions, sustained exposure below -34°C (-30°F) degrades the internal pressure seal performance under differential pressure.
Q: How do I select the matching extension cable length for a 1.0-meter 330704 probe?
A: Match your total system calibration (typically 5.0m or 9.0m). For a 1.0m probe, connect a 4.0m extension cable for a 5.0m system or an 8.0m cable for a 9.0m system.
Q: What resistance value confirms the internal winding health of this specific 1m unit?
A: Measure DC resistance across the coaxial connector pins using a calibrated meter. The baseline value for a 1.0m cable must read strictly within 5.4 to 6.4 ohms.
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