Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330901-00-32-05-02-CN |
| Brand | Bently Nevada |
| Product Type | 3300 NSv Eddy Current Proximity Probe |
| Origin | USA |
| Weight | Approx. 0.14 kg |
| Dimensions | 8 mm probe diameter; 32 mm case length; 0.5 m integral cable |
| Operating Temp | Approx. -35 deg C to +100 deg C |
| Power Consumption | Supplied by compatible 3300 XL NSv Proximitor Sensor |
| Sensor Technology | Eddy current, non-contact displacement measurement |
| Probe Design | Narrow Side View (NSv) configuration |
| Thread Size | M8 x 1 |
| Connector Type | Miniature coaxial ClickLoc connector |
| Measurement Functions | Shaft vibration, radial position, axial position, speed and Keyphasor signals |
| Linear Range | Approximately 1.5 mm (60 mils) |
| Recommended Gap Setting | 1.0 mm (40 mils) |
| Scale Factor | 200 mV/mil (7.87 V/mm) |
| Frequency Response | DC to 10 kHz |
| System Compatibility | 3300 XL NSv Proximitor Sensor and extension cable |
Eddy-Current Probe Scaling and Rotor Dynamics
The 330901-00-32-05-02-CN uses an eddy-current sensing circuit to convert the distance between the probe tip and conductive shaft target into an electrical displacement signal. The probe output characteristics are matched with the 3300 XL NSv Proximitor Sensor calibration system to maintain consistent scale factor performance.
The NSv probe geometry supports installation where radial clearance is restricted. The measurement circuit is applied for rotor dynamics analysis, including shaft vibration monitoring, radial displacement observation, axial position measurement, and Keyphasor speed reference applications.
The system calibration requires verification of the probe gap voltage relationship. Standard Bently Nevada proximity systems use a negative DC gap voltage reference, with approximately -10 VDC representing the nominal target position for many installation configurations.
Frequently Asked Questions
Q: What Proximitor Sensor is required for the 330901-00-32-05-02-CN probe?
A: The probe is designed for operation with a compatible Bently Nevada 3300 XL NSv Proximitor Sensor and extension cable assembly.
Q: Is the 330901-00-32-05-02-CN a contact measurement device?
A: No. It is an eddy-current non-contact proximity probe that measures shaft displacement through electromagnetic field variation.
Q: What installation factors affect measurement accuracy?
A: Probe gap adjustment, target material condition, cable routing, electrical grounding, and mechanical mounting stability affect signal quality and measurement accuracy.
Field Installation Guidelines
- Install the probe with the correct M8 x 1 threaded mounting interface and maintain mechanical rigidity to prevent vibration-induced measurement errors.
- Verify the probe tip clearance and gap voltage according to the applicable 3300 XL NSv system installation procedure.
- Use shielded cabling practices and maintain separation between proximity probe wiring and high-current power conductors.
- Connect cable shielding according to the machinery monitoring system grounding requirements to minimize electrical interference.
- Confirm that the shaft target material matches the calibration requirements of the Bently Nevada proximity system.
- Avoid mechanical damage to the probe tip surface and ClickLoc connector during installation.
- Perform electrical continuity and signal verification before placing the machinery protection channel into service.
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