Description
Bently Nevada 330905-00-25-05-01-05
Technical Specifications
- Base Model: 330905, 3300 NSv Probe with M10×1 thread, without armor
- Unthreaded Length: 0 mm (fully threaded)
- Overall Case Length: 250 mm
- Total Probe Length: 0.5 meter (20 inches)
- Connector Type: Miniature coaxial ClickLoc connector with connector protector, standard cable
- Agency Approval: Multiple approvals
- Linear Range: 1.5 mm (60 mils)
- Scale Factor: 7.87 V/mm (200 mV/mil)
- Frequency Response: 0 to 10 kHz
- Probe Tip Diameter: 5 mm
- Probe Case Material: AISI 304 stainless steel
- Probe Tip Material: Polyphenylene sulfide
- Operating Temperature: -52°C to +177°C
- Storage Temperature: -52°C to +177°C
- DC Resistance: 4.0 ± 0.5 Ω
- Minimum Bend Radius: 25.4 mm
Functional Features
- Extended 250 mm case length for deep mounting applications
- Connector protector prevents fluid ingress into ClickLoc connection
- Narrow Side-view design for restricted installation spaces
- Compatible with small shafts under 51 mm diameter
- Full interchangeability within 3300 XL NSv system
- High-temperature FEP cable insulation
- Gold-plated connector contacts for long-term reliability
Application Scenarios
- Thick-walled compressor bearing housings
- Deep adapter sleeve installations
- Large pump turbine bearing monitoring
- Industrial gas turbine auxiliary equipment
- Applications requiring probe-to-Proximitor close coupling
Performance Parameters
- Linearity Deviation: Less than ±0.06 mm
- Resolution: 1 µm sensitivity
- Interchangeability: Maintained within system specifications
- Temperature Stability: ±10% over full operating range
- Maximum Thread Engagement: 15 mm
- Recommended Torque: 11.3 N·m
Material Composition
- Probe Case: AISI 304 stainless steel
- Probe Tip: Polyphenylene sulfide
- Cable Insulation: Fluorinated ethylene propylene
- Connector Contacts: Gold-plated brass
- Connector Protector: Polymer seal cap
Structural Characteristics
- Long 250 mm cylindrical threaded body
- Short 0.5 meter integral cable for proximity mounting
- ClickLoc connector with integrated protector cap
- PPS probe tip with TipLoc bonding
- Robust construction for high-vibration environments
Working Principle The probe generates a high-frequency electromagnetic field at its tip through an internal coil excited by the Proximitor sensor. Eddy currents induced in the conductive target surface modify the coil impedance in direct proportion to the gap distance. The Proximitor converts this impedance variation into a linear voltage signal, providing both DC gap position and AC vibration data.
Installation Requirements
- M10×1 threaded mounting hole must accommodate 250 mm depth
- Ensure adequate support for extended case length
- Set probe gap to 1.0 mm from target surface
- Verify gap voltage reading of -10 Vdc
- Connect protector cap after mating extension cable
- Maintain minimum cable bend radius
Usage Precautions
- Extended case requires careful handling during installation to prevent bending
- Verify adequate thread engagement depth in mounting structure
- Connector protector must be installed after cable mating to maintain seal
- Do not use as structural support member
- Regularly inspect long case for mechanical damage or corrosion
- Short 0.5 m cable limits routing options; plan Proximitor location accordingly
