Bently Nevada 330801-28-05-101-03-02 Proximity Sensor

Bently Nevada 330801-28-05-101-03-02 Proximity Sensor

The Bently Nevada 330801-28-05-101-03-02, also cataloged as the 330801 proximity sensor, serves as an 8 mm transducer system for shaft vibration and position monitoring in rotating machinery.

Part Number Breakdown

• Model (330801): 8 mm proximity probe / transducer system
• Suffix (28): Series option (specific to 330801 family)
• Suffix (05): Probe configuration option
• Suffix (101): Cable length / assembly variant
• Suffix (03): Mounting fittings option
• Suffix (02): Miniature coaxial ClickLoc connector

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The sensor operates on the eddy-current principle, translating magnetic field interactions into linear voltage outputs. Standard sensitivity is 200 mV/mil, with a linear range of 2 mm. Gap voltage validation at -10 VDC ensures balanced measurement of shaft movement in both directions. Coaxial shielding suppresses cross-talk, maintaining signal fidelity in multi-probe installations.

Frequently Asked Questions

Q: Can the 330801 sensor measure both static and dynamic displacement? A: Yes. It measures static shaft position and dynamic vibration simultaneously.

Q: Is the mounting interface standardized? A: Yes. The probe uses a 3/4-14 NPT mounting interface for compatibility with standard housings.

Q: Does frequency response extend into higher ranges? A: The probe supports 0 Hz to 10 kHz, sufficient for most turbomachinery vibration monitoring applications.

Field Installation Guidelines

• Engage 3/4-14 NPT threads with minimum 5 turns for mechanical stability.
• Ground shielding at the proximitor end only to prevent ground-loop interference.
• Route cables away from high-voltage conductors to minimize induced noise.
• Verify -10 VDC gap voltage reference during commissioning for accurate displacement scaling.
• Confirm hazardous area approvals before installation in classified zones.