The Bently Nevada 330102-24-72-10-02-00, also cataloged as the 330102 Proximity Transducer, operates as a dedicated hardware component for non-contacting displacement measurement within 3300 XL machinery protection systems. This device provides direct physical signal execution via eddy-current induction.

Suffix Breakdown & Configuration

• 330102: 8 mm Proximity Probe, Standard Mount

• 24: Unthreaded Length (240 mm)

• 72: Overall Case Length (720 mm)

• 10: Total Length (1.0 meter)

• 02: Connector Type (Miniature coaxial ClickLoc connector)

• 00: Agency Approval (Not required)

Hardware Specifications

Mechanical Monitoring & Rotor Dynamics

System performance is defined by precise eddy-current probe scaling, which translates target distance into a linear voltage output. Maintenance of rotor dynamics requires that the gap voltage be validated at -10 VDC under steady-state operating conditions. Proper cross-talk suppression is achieved through the use of high-frequency modulated carrier signals, ensuring that multiple probes mounted in close proximity do not interfere with individual oscillation frequencies. Shielding integrity must be maintained to prevent signal noise in high-vibration environments.

Ordering Information

• 1 Bently Nevada 330102 8 mm Probe

• 1 Threaded mounting nut

• 1 Connector protector assembly

Field Installation Guidelines

• Gap Positioning: Install the probe tip at a nominal 1.27 mm gap from the target machine component.

• Torque Specifications: Secure the probe housing using a torque-limiting wrench set to 5.6 N-m.

• Cable Routing: Utilize dedicated conduit; ensure a minimum 25 mm bend radius for coaxial leads to prevent impedance discontinuity.

• Electrical Termination: Connect the coaxial cable to the corresponding Proximitor sensor; ensure the connector is locked to maintain environmental sealing.

Frequently Asked Questions

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

  The linear operating range is 2.0 mm, typically calibrated from 0.25 mm to 2.29 mm relative to the target material.

• Is the probe case electrically grounded?

  The probe body is electrically isolated from the sensor tip but is typically grounded to the machine case via the mounting hardware.

• Can I use a 5 m extension cable with this 1 m probe?

  No. The system is calibrated for a specific total length. Mixing cable lengths will invalidate the output scaling and system accuracy.

• Why is the -10 VDC gap target required?

  The -10 VDC level places the sensor in the center of its linear range, providing the maximum dynamic margin for vibration measurement.

• What happens if the probe tip touches the rotor?

  Contact during operation will cause mechanical damage to the PPS tip and lead to sensor output signal clipping or failure.

• How do I identify a faulty Proximitor sensor?

  A signal output of 0 VDC indicates an open circuit, while -24 VDC indicates a short-to-ground or failure of the internal oscillator.

• Are these probes suitable for outdoor environments?

  The probe is environmentally sealed, but the connector requires additional protection if exposed to direct weather or wash-down conditions.

• Can the 240 mm unthreaded length be modified?

  No, the unthreaded length is a fixed mechanical feature. Field modification will compromise the structural integrity and mounting capability.