Configured for precise non-contact displacement and vibration monitoring in 3300 System platforms, the Bently Nevada 330101-00-50-10-02-00 (330101 Proximity Probe) provides direct physical signal transduction for rotary machine analysis. The probe converts mechanical motion into eddy-current-based voltage signals for processing.

Suffix Breakdown and Configuration Matrix

• Part Number: 330101-00-50-10-02-00

• Probe Type: 3300 XL 8 mm

• Unthreaded Length: 00 - 0.0 in

• Case Length: 50 - 5.0 in

• Total Length: 10 - 1.0 m (3.3 ft)

• Connector: 02 - Miniature coaxial ClickLoc connector

• Agency Approval: 00 - Not required

Hardware Specifications

Mechanical Monitoring and Transducer Dynamics

The 330101 transducer system relies on eddy-current probe scaling calibrated to AISI 4140 steel. Proper installation requires gap voltage validation to ensure the signal rests at the -10 VDC target midpoint within the linear range. To ensure measurement accuracy, installers must enforce cross-talk suppression by maintaining a minimum side-view clearance of 1.5 inches (38 mm) from the probe tip. When configuring rotor dynamics measurement channels, the transducer must be isolated from mechanical noise and electromagnetic interference, particularly in high-speed machinery environments, to prevent signal distortion.

Ordering Info

• 1 330101 3300 XL 8 mm Proximity Probe

• 1 Threaded mounting nut (pre-installed)

Field Installation Guidelines

• Material Compliance: Ensure the observed target is AISI 4140 steel to maintain factory-calibrated linearity.

• Mechanical Mounting: Install the probe through the mounting bracket, ensuring a minimum side-view clearance of 1.5 inches (38 mm) from all metallic objects.

• Interference Mitigation: Maintain a minimum 1.5 inch (38 mm) separation between tips when installing multiple radial vibration probes to eliminate signal interference.

• Connection: Secure the ClickLoc connector firmly to the extension cable, ensuring the housing provides a dust-tight seal.

Frequently Asked Questions

• Can this probe be used for axial position measurement?

  Yes. While often used for radial vibration, the probe is equally capable of measuring axial thrust position if mounted perpendicularly to a shaft shoulder.

• Is bench calibration required after installation?

  No. The 3300 XL system supports complete interchangeability; as long as the components are matched within the system standard, manual bench calibration is not necessary.

• What is the effect of using a non-AISI 4140 target?

  Non-standard target materials change the eddy-current eddy-field penetration depth, resulting in non-linear voltage output and loss of accuracy relative to the probe scaling.

• Is the ClickLoc connector waterproof?

  The ClickLoc connector is designed for industrial environments but is not submersible. It should be housed within a conduit or junction box if exposed to process fluids.

• How is the probe tip protected?

  The probe tip is constructed from high-strength polyphenylene sulfide, providing chemical and thermal resistance during standard operation.

• Can the probe be cut to a shorter length?

  No. The probe and cable are a matched system. Cutting the cable changes the impedance, which invalidates the calibration and degrades the high-frequency signal response.

• What is the purpose of the unthreaded length option?

  The unthreaded length allows for specific mounting depth requirements in machine casings, preventing interference between the threads and the internal mounting surface.

• How does RFI immunity compare to older models?

  The 3300 XL system incorporates improved filtering, meeting European CE mark approvals without the need for external shielded conduits or specialized metallic housings.