Configured for shaft displacement monitoring in mechanical platforms, the Bently Nevada 330103-00-02-20-02-05 (330103-00-02-20-02-05 Proximity Probes) provides direct physical and electrical execution of non-contacting RF position signal conditioning.

Model Suffix Configuration

• 330103: Base Model (3300 XL 8 mm Proximity Probe)

• 00: Unthreaded Length (00 mm)

• 02: Overall Case Length (02 mm)

• 20: Total System Length (2.0 meters)

• 02: Connector Type (Miniature coaxial ClickLoc connector)

• 05: Agency Approval (Multiple international standards)

Hardware Specifications

Mechanical Monitoring & TSI Characteristics

The 3300 XL transducer system employs eddy-current probe scaling to convert target proximity into a linear voltage signal. During installation, gap voltage validation against -10 VDC targets at the oscillator output ensures the probe operates within its linear measurement range. The system supports high-speed rotor dynamics monitoring by maintaining signal integrity across the air gap. Cross-talk suppression is maintained through frequency-coded sensor channels, which prevent signal interference in multi-channel monitoring configurations.

Ordering info

• One (1) 330103-00-02-20-02-05 Proximity Probe

• Protective connector thread caps

• Installation technical documentation

Field Installation Guidelines

• Mechanical Mounting: Thread the probe into the mounting assembly; use a feeler gauge to verify the air gap matches the design specification to achieve the -10 VDC operational target.

• Cabling: Route coaxial cabling through grounded metallic conduit; respect the minimum bend radius to prevent internal cable structural degradation.

• Grounding: Maintain a direct ground path from the probe body to the machine housing for signal reference stability.

• Connection Verification: Inspect all coaxial connectors for debris and ensure they are hand-tightened before operation.

• Static Calibration: Confirm the static gap voltage with a high-impedance voltmeter at the oscillator output before machine startup.

Frequently Asked Questions

• Q: Is this probe compatible with standard 11 mm probe oscillators?

  A: No, the 8 mm probe must be paired with a compatible 8 mm oscillator to maintain correct system scaling and electrical frequency response.

• Q: How is the probe gap validated?

  A: The gap is validated by measuring the DC output voltage at the oscillator; the nominal target is -10 VDC within the probe's linear operating range.

• Q: Can the coaxial cable be field-spliced?

  A: No, field-splicing alters the system resonance and electrical impedance, which invalidates the factory-calibrated scale factor.

• Q: How does target material affect the output?

  A: Sensitivity is factory-calibrated for 4140 steel; usage with other materials requires a scaling factor adjustment to maintain measurement accuracy.

• Q: What is the purpose of the connector protector cap?

  A: The cap prevents environmental contaminants, oil, or dust from entering the coaxial connection, preserving electrical integrity.

• Q: Does the probe require an external power supply?

  A: No, it is a passive device; excitation power is supplied via the radio-frequency carrier generated by the 3300 XL oscillator.

• Q: What causes unstable or drifting signal readings?

  A: Instability is typically caused by loose coaxial connections, electrical ground loops, or physical damage to the probe tip or cable insulation.

• Q: Should thread-locking compound be used during installation?

  A: No, thread-locking compounds may create an insulating barrier that disrupts the critical electrical ground path between the probe and machine housing.