The Bently Nevada 330101-00-30-50-02-00, also cataloged as the 330101 Proximity Probe, operates as a dedicated hardware component for non-contacting vibration and position measurement within rotating machinery monitoring systems.

Suffix Breakdown & Model Matrix

• 330101: 3300 XL 8 mm Proximity Probe, 3/8-24 thread, without armor.

• 00: Unthreaded Length Option (00 mm).

• 30: Total Case Length Option (3.0 meters).

• 50: Total Length Option (5.0 meters).

• 02: Agency Approval Option (Multiple approvals: CSA, ATEX, IECEx).

• 00: Internal Mounting Thread/Connection Style (Standard mount).

Hardware Specifications

Mechanical Monitoring and TSI Integration

The 3300 XL system relies on precise eddy-current probe scaling to ensure linear output relative to the target displacement. Proper installation requires gap voltage validation, where the target operational gap typically centers on a -10 VDC setpoint to maintain linearity within the transducer's 2 mm range. Rotor dynamics analysis, such as shaft centerline and orbital vibration monitoring, depends on the phase-coherent signal transmission through the extension cable and Proximitor sensor. Cross-talk suppression is maintained through high-frequency shielding, preventing interference when multiple probes are installed in close proximity on the same machine casing.

Ordering and Packaging

1. One (1) 330101-00-30-50-02-00 Proximity Probe

2. One (1) Threaded locknut with safety wire holes

3. One (1) Connector protector (pre-installed)

Installation Protocols

• Probe Mounting: Ensure the probe is mounted in a bracket that prevents mechanical resonance. Maintain a minimum distance from other probes to avoid cross-talk.

• Gap Setting: Adjust the probe-to-target gap to achieve a -10 VDC reading when the machine is at rest or at the center of the mechanical range.

• Cabling: Use only Bently Nevada specified extension cables to maintain system impedance. Route cables away from high-voltage AC lines to minimize electromagnetic interference.

• Termination: Secure the connector using the provided protector to ensure ingress protection and prevent accidental disconnection.

Frequently Asked Questions

• What is the nominal scale factor of this probe?The nominal scale factor is 7.87 V/mm (200 mV/mil) for the 3300 XL system.

• Can this probe be used in hazardous areas?Yes, the 02 suffix indicates it is designed for use in hazardous environments, provided it is connected to an appropriately certified intrinsic safety barrier.

• What is the purpose of the connector protector?It prevents oil and dirt ingress into the coaxial connector, ensuring the signal integrity of the high-frequency carrier wave.

• Does the probe require a specific Proximitor model?This 8 mm probe is designed specifically for use with the 3300 XL Proximitor sensor; mismatching components will invalidate the system linearity.

• How should the probe be grounded?The system is typically grounded at the monitor rack; ensure the probe case is electrically isolated from the machine housing if ground loops are identified.

• What is the impact of cable length on output?The system is calibrated for a specific total length (3.0 meters). Altering this length will shift the calibration and introduce measurement errors.

• Can this sensor measure non-ferrous targets?The sensitivity will change based on the target material's conductivity and permeability. Calibration must be performed for specific alloys.

• How do I verify if the probe is functioning correctly?Perform a static gap check with a digital multimeter to verify the -10 VDC output at the specified center gap.