Bently Nevada 330901-00-40-10-11-05 3300 NSv Proximity Probe
The Bently Nevada 330901-00-40-10-11-05, also cataloged as the 330901 Proximity Probe, operates as a dedicated hardware component for eddy-current displacement measurement within 3300 NSv monitoring systems.
Suffix Breakdown & Model Matrix
- 330901: 3300 NSv Proximity Probe, 1/4-28 UNF thread, without armor
- -00: Unthreaded length option (0.0 inches)
- -40: Case length option (4.0 inches)
- -10: Integral cable length (1.0 meter)
- -11: Miniature coaxial ClickLoc connector with protector/silicone tape
- -05: Agency approval option (multiple hazardous area certifications)
Hardware Specifications
| Parameter |
Specification |
| Model |
330901-00-40-10-11-05 |
| Brand |
Bently Nevada |
| Origin |
USA |
| Weight |
Not specified |
| Dimensions |
Case length 4.0 in |
| Operating Temp |
Not specified |
| Power Consumption |
Passive probe, powered via Proximitor |
| Thread Size |
1/4-28 UNF-2A |
| Tip Material |
Polyphenylene sulfide (PPS) |
| Cable Length |
1.0 m integral |
| Connector |
Miniature coaxial ClickLoc |
| Agency Approvals |
Multiple hazardous area certifications |
| Primary Use |
Fluid-film bearing machines, small shafts < 51 mm |
Gap Voltage Validation (-10 VDC Targets)
The 330901 NSv probe maintains linear displacement scaling through eddy-current principles. Gap voltage validation is standardized at -10 VDC targets, ensuring consistent calibration across rotor dynamics applications. This reference voltage provides predictable sensitivity, while cross-talk suppression minimizes interference between adjacent probes in dense monitoring environments.
Frequently Asked Questions
Q: Can the 330901 probe be used interchangeably with 3300 XL series cables? A: No, the NSv probe requires specific NSv extension cables and Proximitor sensors; XL series cables are not compatible.
Q: What is the minimum shaft diameter suitable for this probe? A: The probe is designed for shafts under 51 mm (2 inches), particularly in restricted counterbore or side-view installations.
Q: How is shielding managed in hazardous area installations? A: Shielding must be grounded at the Proximitor end only, ensuring compliance with agency approvals and preventing ground loop currents.
Field Installation Guidelines
- Engage 1/4-28 UNF threads with a minimum of 5 turns for secure seating.
- Route integral cable away from high-voltage conductors to reduce induced noise.
- Ground shielding at the Proximitor termination only.
- Verify -10 VDC gap voltage during commissioning to confirm calibration.
- Maintain probe tip cleanliness; PPS material must not be exposed to abrasive contaminants.
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