Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330905-00-15-05-02-00 |
| Brand | Bently Nevada |
| Product Series | 3300 NSv Proximity Probe |
| Product Type | Metric Eddy-Current Proximity Probe |
| Origin | USA |
| Weight | 0.14 kg |
| Dimensions | Overall case length: 150 mm; Total length: 0.5 meter (20 inches) |
| Operating Temp | -34 deg C to +177 deg C |
| Storage Temp | -51 deg C to +177 deg C |
| Power Consumption | Passive probe; powered by compatible 3300 NSv Proximitor Sensor |
| Thread Type | M10 x 1 |
| Probe Construction | Unarmored probe with stainless steel case |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Cable Type | 75 ohm coaxial cable, FEP insulated |
| Connector Type | Miniature coaxial ClickLoc connector |
| Linear Range | 1.5 mm (60 mils) |
| Incremental Scale Factor | 7.87 V/mm (200 mV/mil) typical with matching Proximitor Sensor |
| Frequency Response | 0 to 10 kHz (+0, -3 dB) |
| Target Application | Small shafts and limited clearance machinery installations |
Eddy-Current Probe Scaling and Rotor Dynamics Monitoring
The 3300 NSv system uses eddy-current measurement technology to convert shaft displacement into proportional electrical output through the probe and matched Proximitor Sensor. The 330905 probe configuration provides a 7.87 V/mm scaling characteristic for dynamic and static position measurement.
The probe design supports rotor dynamics analysis by measuring shaft vibration relative to the probe tip position. Proper gap voltage validation is performed through the Proximitor output, with the standard operating target centered around -10 VDC gap voltage for valid linear measurement conditions.
The compact probe geometry reduces installation restrictions on small diameter shafts and provides signal measurement capability where standard 8 mm proximity probes cannot be mechanically installed.
Frequently Asked Questions
Q: What type of signal does the 330905-00-15-05-02-00 generate directly?
A: The probe itself is a passive eddy-current sensing element. It requires connection to a compatible 3300 NSv Proximitor Sensor, which supplies excitation and converts the probe signal into a proportional voltage output.
Q: Can the probe be used without a matching Proximitor Sensor?
A: No. The 330905 probe requires a compatible Bently Nevada Proximitor Sensor for excitation, demodulation, and signal scaling.
Q: What installation factors affect measurement accuracy?
A: Probe gap setting, target surface condition, cable routing, and proper shielding practices affect measurement stability. The probe should be installed according to the mechanical clearance and electrical installation requirements of the monitoring system.
Field Installation Guidelines
- Install the probe with the M10 x 1 threaded connection and secure the mechanical mounting interface according to site installation procedures.
- Maintain the required probe-to-shaft target clearance to keep the measurement point inside the linear operating range.
- Route the coaxial cable separately from high-current power conductors to reduce electromagnetic interference.
- Connect cable shielding according to the grounding requirements of the Bently Nevada monitoring system.
- Verify gap voltage through the connected Proximitor Sensor before commissioning vibration or position monitoring.
- Avoid sharp cable bends and mechanical stress on the ClickLoc connector during installation.
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