Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330101-00-75-15-02-05 |
| Brand | Bently Nevada |
| Product Type | 3300 XL 8 mm Eddy Current Proximity Probe |
| Origin | USA |
| Dimensions | Overall case length: 7.5 in (190 mm); Total cable length: 1.5 m |
| Operating Temp | Probe and cable: -52 deg C to +177 deg C |
| Power Consumption | Powered through compatible 3300 XL Proximity System; probe consumption not separately specified |
| Thread Size | 3/8-24 UNF |
| Unthreaded Case Length | 0.0 in |
| Connector Type | Gold-plated ClickLoc miniature coaxial connector |
| Cable Type | Standard coaxial cable |
| Probe Tip Material | Polyphenylene Sulfide (PPS) |
| Probe Case Material | AISI 303/304 Stainless Steel |
| Linear Range | 2.0 mm (80 mils) |
| Target Material | AISI 4140 steel calibration target |
| Incremental Scale Factor (ISF) | 7.87 V/mm (200 mV/mil) +/- 5% |
| Direct Linear Range (DLR) Error | Within +/- 0.025 mm (+/- 1 mil) |
| Relative Humidity | 100% condensing, non-submerged |
| Hazardous Area Approval | CSA/NRTL Class I, Zone 0 / Div 1, Groups A, B, C, D; ATEX / IECEx Ex ia IIC T4…T1 Ga |
Eddy Current Probe Scaling and Rotor Dynamics Monitoring
The 330101-00-75-15-02-05 uses eddy-current sensing technology to convert shaft-to-probe gap changes into proportional electrical output signals. The probe maintains a defined scaling relationship of 200 mV/mil, which allows the connected 3300 XL system to process shaft vibration and position measurements.
Additionally, the probe supports rotor dynamics analysis by providing displacement data for rotating equipment condition monitoring. The system evaluates dynamic shaft movement, radial vibration, and axial position changes through continuous gap measurement.
The probe output requires correct gap voltage validation during installation. The standard operating calibration uses gap voltage targets, including the commonly applied -10 VDC reference condition for proper measurement range verification.
Frequently Asked Questions
Q: What measurement principle does the 330101-00-75-15-02-05 use?
A: The probe uses eddy-current technology to measure the distance between the probe tip and the conductive shaft target. It converts the physical gap variation into a proportional voltage signal.
Q: What cable and connector configuration does this model include?
A: This model includes a standard coaxial cable with a miniature coaxial ClickLoc connector. The connector provides the interface connection for the 3300 XL Proximity Transducer System.
Q: Can this probe operate in hazardous areas?
A: Yes. The -05 suffix configuration includes CSA, ATEX, and IECEx approvals for intrinsically safe hazardous area applications.
Field Installation Guidelines
- Install the probe with the specified 3/8-24 UNF mounting thread and maintain proper mechanical alignment with the rotating shaft target.
- Verify the probe gap voltage before commissioning to confirm that the measurement range matches the 3300 XL system input requirements.
- Route coaxial cables away from high-current power conductors and strong electromagnetic interference sources.
- Maintain proper cable shielding and grounding practices according to the system installation requirements.
- Confirm that the shaft target material matches the calibration requirement. The standard calibration target is AISI 4140 steel.
- Avoid mechanical stress on the ClickLoc connector and cable termination during installation.


















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