High-Reliability Turbine-Grade Proximity Probe for Hazardous Area Applications
The Bently Nevada 330876-02-90-01-CN 3300 XL 50 mm Eddy-Current Probe is a precision non-contact sensor designed for critical measurement of shaft displacement, vibration, and differential expansion in large rotating machinery. As part of the 3300 XL 50 mm transducer system, it is engineered for turbine supervisory instrumentation (TSI) where long-range measurement accuracy and environmental robustness are essential.
The “CN” configuration typically indicates compliance with specific regional hazardous-area certification requirements, commonly including ATEX/IECEx and China NEPSI approvals for use in regulated industrial environments.
This makes the probe especially suitable for installations in refineries, petrochemical plants, and power generation facilities where certified equipment is mandatory.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | 3300 XL 50 mm Eddy-Current Proximity Probe |
| Model Number | 330876-02-90-01-CN |
| System Series | 3300 XL 50 mm Transducer System |
| Measurement Technology | Eddy-current non-contact sensing |
| Probe Diameter | 50 mm |
| Primary Measurements | Shaft vibration, displacement, differential expansion |
| Case Style | Threaded industrial mounting (straight exit design) |
| Cable Length | 9.0 m (typical interpretation of “90” code) |
| Cable Type | High-temperature FluidLoc® triaxial cable |
| Armor | Armored configuration |
| Approval | CN hazardous area certification variant (regional compliance option) |
| Operating Temperature | -35°C to +200°C (continuous) |
| Short-Term Temperature | Up to +250°C |
| System Compatibility | 3300 XL 50 mm Proximitor® + extension cable systems |
| Approximate Dimensions | Configuration-dependent (~160–180 mm assembly length) |
| Approximate Weight | ~0.8–1.6 kg |
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