Configured for high-accuracy displacement measurement in industrial rotating machinery, the Bently Nevada 330101-10-44-05-02-05 (330101 Proximity Probe) provides direct physical signal execution via eddy-current induction. This component captures shaft radial vibration and axial position data, outputting a proportional voltage signal for analysis by TSI monitoring systems.

Suffix Breakdown & Model Matrix

• 330101: 8 mm Proximity Probe, Standard Mount

• 10: Unthreaded Length (10 mm)

• 44: Overall Case Length (440 mm)

• 05: Total Length (0.5 meter)

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

• 05: Agency Approval (CSA, ATEX, IECEx)

Hardware Specifications

Mechanical Monitoring & Eddy-Current Scaling

The 3300 XL system employs precise eddy-current probe scaling to ensure linear displacement response. For valid rotor dynamics data, the system requires gap voltage validation targeting -9 VDC to -11 VDC when the machine shaft is at the centered position. Internal circuitry provides robust cross-talk suppression, allowing multiple probes to operate in high-density proximity without frequency interference. This ensures signal fidelity in complex vibration monitoring configurations.

Ordering Information

• 1 Bently Nevada 330101-10-44-05-02-05 Proximity Probe

• 1 Threaded mounting nut

• 1 Installation and configuration documentation set

Field Installation Guidelines

• Gap Positioning: Install the probe tip at a nominal 1.27 mm gap from the target surface to maintain optimal linear operation.

• Torque Specifications: Secure the locknut at 5.6 N-m to maintain structural stability in high-vibration applications.

• Cable Handling: Utilize a minimum 25 mm bend radius for coaxial leads; ensure cable routing avoids mechanical chafing.

• Grounding: Terminate the cable shield specifically at the monitor instrument end to minimize electromagnetic noise and ground loops.

Frequently Asked Questions

• Is this probe compatible with non-XL 3300 series components?

  Yes, the 3300 XL system is physically and electrically interchangeable with non-XL 3300 5 mm and 8 mm components.

• What is the requirement for the Proximitor sensor?

  The probe must be paired with a 3300 XL Proximitor sensor calibrated for the matching system length (0.5 m).

• Can the cable length be altered in the field?

  No. The system is factory-calibrated for the 0.5 m length; changing this length will invalidate the accuracy and require recalibration.

• What does the "Standard Mount" configuration imply?

  The probe is intended for standard panel or bracket mounting where the entire probe body is accessible for threading and positioning.

• How does target material affect the output?

  The system is calibrated for AISI 4140 steel. Ferrous or non-ferrous targets with different magnetic properties require sensitivity scaling.

• What causes a gap voltage failure?

  A drift toward 0 VDC indicates an open circuit, while -24 VDC indicates a short-to-ground in the coaxial cabling.

• Should I use thread-locking compounds?

  Avoid thread-locking compounds that may create electrical isolation or chemical degradation of the PPS probe tip.

• Are these probes suitable for steam turbines?

  Yes, they are suitable for measuring differential expansion and axial thrust position in steam turbine applications.