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Product Overview
The Bently Nevada 330104-00-08-10-02-05 8mm proximity probe provides precision non-contact displacement sensing for rotating machinery protection. This probe serves as the primary sensing element in eddy-current measurement systems for vibration and position monitoring. It converts the gap between the probe tip and the shaft surface into a reliable impedance signal. Power generation and oil refining facilities depend on this probe for continuous turbomachinery protection. Its robust construction ensures stable performance across extreme temperature variations and harsh environmental conditions.
Technical Specifications
The following table presents the complete technical parameters for the Bently Nevada 330104-00-08-10-02-05 8mm proximity probe.
| Parameter | Specification |
|---|---|
| Product Type | 8mm Proximity Probe (Sensing Element) |
| Compatibility | Bently Nevada 3300 and 3500 monitoring systems |
| Thread Size | 3/4-20 UNF |
| Overall Probe Length | 80 mm (tip to connector) |
| Thread Length | 10 mm |
| Tip Material | Polyphenylene sulfide (PPS) with encapsulated coil |
| Case Material | 316L stainless steel |
| Integral Cable Length | 2 meters (6.6 feet) |
| Cable Jacket | High-strength fluoropolymer |
| Connector Type | 6-pin female, gold-plated contacts |
| Coil Inductance | 3.2 µH ±5% at 25°C |
| Weight | Approximately 0.50 kg |
| Operating Temperature | -51°C to +177°C |
| Storage Temperature | -55°C to +185°C |
| Minimum Bend Radius | 25 mm (static) |
Design Features and Construction
Probe Tip and Coil Technology
The Bently Nevada 330104-00-08-10-02-05 features a PPS probe tip that encapsulates a precision-wound induction coil. This advanced polymer offers exceptional resistance to chemical attack and thermal degradation. The coil maintains a stable inductance value of 3.2 microhenries throughout its specified temperature range. This stability guarantees consistent oscillator drive characteristics for accurate gap measurements in critical machinery.
Mechanical Dimensions and Mounting
This 8mm probe measures 80 millimeters from the sensing face to the connector termination. It includes a 10-millimeter threaded section with standard 3/4-20 UNF threads. The 316L stainless steel case provides outstanding corrosion protection and mechanical durability. Consequently, the Bently Nevada 330104-00-08-10-02-05 fits most standard mounting brackets without requiring additional adapters or modifications.
Integral Cable and Connector Assembly
A 2-meter integral fluoropolymer-jacketed cable extends directly from the probe body for system interconnection. This cable length provides convenient routing from the measurement point to junction boxes. Gold-plated 6-pin connectors at the termination end create secure, low-resistance electrical contacts. The cable’s 25-millimeter minimum bend radius prevents internal damage during installation and maintenance activities.
Environmental Performance and Durability
This probe operates reliably across an exceptionally wide temperature range from -51°C to +177°C. It also withstands short-term storage temperatures up to +185°C without degrading performance. The sealed PPS tip design prevents moisture ingress that could compromise coil characteristics. These environmental tolerances make the Bently Nevada 330104-00-08-10-02-05 suitable for both gas turbine and steam turbine monitoring applications.
Installation and System Integration
Installing this 8mm probe requires threading it into a suitable mounting fixture or bearing housing assembly. You must set the probe gap correctly to achieve the proper DC bias voltage for the connected proximitor. The threaded section allows precise gap adjustments using standard hand tools. This probe integrates seamlessly with 3300 XL proximitors and 3500 rack monitoring systems for comprehensive protection solutions.