Bently Nevada 330104-00-08-05-02-05 3300 XL 8 mm Proximity Probe
The Bently Nevada 330104-00-08-05-02-05 is a specialized eddy-current proximity probe from the 3300 XL 8 mm series, engineered for vibration, displacement, and speed/Keyphasor measurements in fluid-film bearing machinery.
02: Miniature coaxial ClickLoc connector, standard cable
05: Agency approvals (CSA, ATEX, IECEx for hazardous locations)
Technical Specifications
Parameter
Specification
Model
330104-00-08-05-02-05
Brand
Bently Nevada
Sensor Type
Eddy-current proximity transducer probe
Tip Diameter
8 mm
Thread Size
M10 × 1
Linear Range
2 mm (80 mils)
Scale Factor
~200 mV/mil (7.87 V/mm)
Tip Material
Polyphenylene sulfide (PPS)
Case Material
AISI 303/304 stainless steel
Temperature Range
–52 °C to +177 °C (–62 °F to +350 °F)
Cable Length
0.5 m (1.6 ft)
Pressure Seal
Integrated Viton® O-ring for casing differential pressure sealing
Approvals
CSA, ATEX, IECEx hazardous area certifications
Application Context
Radial vibration monitoring for turbines, compressors, and pumps.
Axial thrust position measurement in fluid-film bearing systems.
Keyphasor/speed reference for rotor dynamics and diagnostics.
Pressure-sealed installations where casing integrity must be maintained under differential pressure.
Frequently Asked Questions
Q: What makes the PPS tip material suitable? A: PPS provides chemical and oil resistance, ensuring durability in harsh industrial environments.
Q: Can this probe be used in hazardous areas? A: Yes. Option 05 provides CSA, ATEX, and IECEx certifications.
Q: Does the Viton® O-ring improve reliability? A: Yes. It seals against casing pressure differentials, preventing leakage and maintaining probe stability.
Field Installation Guidelines
Install probe tip perpendicular to shaft surface for accurate displacement readings.
Ensure Viton® O-ring is properly seated to maintain pressure seal integrity.
Maintain coaxial shielding integrity; ground only at the Proximitor end.
Route probe cables away from high-voltage conductors to minimize EMI.
Confirm gap voltage (–9 VDC to –11 VDC nominal) during commissioning.
