Configured for non-contacting vibration and position measurement in rotating machinery, the Bently Nevada 330101-00-11-20-02-CN (330101 Proximity Transducer) provides direct physical signal execution via eddy-current sensing. This hardware component converts target displacement into a proportional voltage signal for localized monitoring instrumentation.

Suffix Breakdown & Model Matrix

• 330101: 8 mm Proximity Probe, Standard Mount

• 00: Unthreaded Length (0 mm)

• 11: Overall Case Length (110 mm)

• 20: Total Length (2.0 meters)

• 02: Connector Type (Miniature coaxial ClickLoc connector, with connector protector)

• CN: Agency Approval (China-specific compliance)

Hardware Specifications

Mechanical Monitoring & Eddy-Current Performance

The 3300 XL system utilizes precise eddy-current probe scaling to convert target gap into a linear voltage output. To ensure measurement accuracy, the gap voltage must be validated at -10 VDC during cold startup, positioning the sensor in the center of its linear range. Rotor dynamics monitoring relies on maintaining signal integrity throughout the signal chain. Effective cross-talk suppression is implemented via the Proximitor sensor electronics, preventing signal interference when multiple probes are installed in high-density sensor arrangements near the machine rotor.

Ordering Information

• 1 Bently Nevada 330101 8 mm Proximity Probe

• 1 Threaded protective cap

• 1 Installation guide

Field Installation Guidelines

• Gap Positioning: Maintain a nominal gap of 1.27 mm from the target surface during installation.

• Torque Specifications: Secure the probe locknut to 5.6 N-m; avoid excessive force to prevent housing thread damage.

• Cable Routing: Keep coaxial cables separate from high-voltage AC lines; maintain a 25 mm minimum bend radius.

• Grounding: Ensure the cable shield is grounded at the monitor terminal block to prevent ground-loop noise.

Frequently Asked Questions

• What is the linear range of this 8 mm probe?

  The linear range is 2.0 mm, typically defined from 0.25 mm to 2.29 mm from the target.

• Can I shorten the 2.0 m cable in the field?

  No. The system is calibrated for the specific cable length; cutting the cable will alter the impedance and output scaling.

• Is the connector interchangeable with older 3300 series?

  No, the 3300 XL ClickLoc connector is designed for specific 3300 XL hardware and is not compatible with legacy 3300 series.

• What is the function of the connector protector?

  The connector protector provides an environmental seal for the ClickLoc interface to prevent moisture or oil ingress in harsh conditions.

• How does target material affect performance?

  The transducer is calibrated for AISI 4140 steel; other target metals require specific scaling factors for accurate measurement.

• What indicates a cable break?

  A sudden shift in output voltage to -24 VDC typically indicates a severed cable or loss of connection to the Proximitor sensor.

• Does this probe require calibration?

  The system is factory-calibrated. No field calibration is required beyond initial gap voltage verification during installation.

• Is the probe tip replaceable?

  No, the probe tip is an integral part of the probe assembly to ensure internal hermetic sealing and structural reliability.