Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330101-00-79-15-02-05 |
| Brand | Bently Nevada |
| Product Type | 3300 XL 8 mm Eddy Current Proximity Probe |
| Origin | USA |
| Dimensions | 3/8-24 UNF threaded probe, 1.5 m integrated coaxial cable |
| Operating Temp | -51 deg C to +177 deg C |
| Power Consumption | Supplied by compatible 3300 XL Proximitor Sensor |
| Measurement Principle | Eddy-current non-contact displacement measurement |
| Target Material | AISI 4140 steel standard calibration target |
| Linear Range | 2.0 mm (80 mils) |
| Initial Standoff | 0.25 mm (10 mils) |
| Scale Factor | 7.87 V/mm (200 mV/mil) +/- 5% |
| Frequency Response | 0 Hz (DC) to 10 kHz |
| Cable Impedance | 75 Ohm coaxial |
| Thread Size | 3/8-24 UNF-2A |
| Tip Material | Polyphenylene sulfide (PPS) |
| Case Material | 303 Stainless Steel |
| Connector Type | Gold-plated brass ClickLoc coaxial connector |
| Cable Construction | Unarmored integrated coaxial cable |
| Connector Option | Miniature coaxial ClickLoc connector |
| Agency Approval | CSA, ATEX, IECEx hazardous area approvals |
Eddy-Current Probe Scaling and Rotor Dynamics Monitoring
The 330101-00-79-15-02-05 uses eddy-current probe scaling to convert mechanical shaft movement into proportional electrical output. The 7.87 V/mm sensitivity provides a standardized measurement relationship for the 3300 XL monitoring chain.
Furthermore, the probe supports rotor dynamics analysis by providing continuous shaft position and vibration displacement data. The connected Proximitor Sensor evaluates gap voltage conditions and maintains measurement accuracy through controlled probe calibration.
The 3300 XL system commonly verifies probe operation through gap voltage validation, including the -10 VDC target range used for proper probe positioning and signal evaluation.
Frequently Asked Questions
Q: What signal does the 330101-00-79-15-02-05 provide to the monitoring system?
A: The probe generates an analog voltage signal proportional to the distance between the probe tip and the conductive shaft target when connected to a compatible 3300 XL Proximitor Sensor.
Q: Can this probe measure rotating shaft vibration without physical contact?
A: Yes. The eddy-current sensing principle measures shaft displacement without mechanical contact between the probe tip and the rotating target surface.
Q: Does the probe include an armored cable design?
A: No. The 330101-00-79-15-02-05 uses an unarmored integrated coaxial cable with a miniature ClickLoc connector.
Field Installation Guidelines
- Install the probe with the specified 3/8-24 UNF mounting thread and maintain correct mechanical alignment with the target surface.
- Verify the probe gap voltage after installation using the connected 3300 XL Proximitor Sensor.
- Route the coaxial cable separately from high-current power conductors to reduce electrical interference.
- Maintain proper cable bending radius and avoid mechanical stress at the ClickLoc connector interface.
- Connect cable shielding according to the monitoring system grounding requirements.
- Confirm the probe tip faces the correct conductive target material before commissioning.
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