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Configured for non-contact vibration and shaft position measurements in critical rotating machinery monitoring systems, the Bently Nevada 330101-00-50-10-02-00 (330101 Proximity Probe) provides direct physical/electrical execution. It operates by generating an eddy-current field at the probe tip to measure dynamic and static distances between the target surface and the sensor, outputting a voltage signal proportional to the gap distance when paired with a compatible 3300 XL Proximitor Sensor.

Suffix Breakdown & Model Matrix

Option Code Specification Parameter Value / Description
330101 Base Model 3300 XL 8 mm Probe, 3/8-24 UNF thread, without armor
-00 Unthreaded Length Option 0.0 in
-50 Overall Case Length Option 5.0 in
-10 Total Length Option 1.0 metre (3.3 feet)
-02 Connector and Cable Type Miniature coaxial ClickLoc connector, standard cable
-00 Agency Approval Option Not required

Hardware Specifications

Parameter Specification
Model 330101-00-50-10-02-00
Brand Bently Nevada
Origin USA
Probe Tip Diameter 8 mm
Thread Type 3/8-24 UNF thread
Unthreaded Length 0.0 in
Overall Case Length 5.0 in
Total System Length 1.0 metre (3.3 feet)
Connector Type Miniature coaxial ClickLoc connector
Cable Type Standard coaxial cable, without armor
Operating Temp -51 deg C to +177 deg C (-60 deg F to +350 deg F)
Linear Range 2.0 mm (80 mils), typically from 0.25 mm to 2.25 mm (10 to 90 mils)
Scale Factor 7.87 V/mm (200 mV/mil) nominal when connected to matching Proximitor
Gap Voltage Target -10.0 VDC nominal at center of linear range (~1.27 mm / 50 mils)
Agency Approval Not required (Option 00)
Weight Approx 0.3 kg

Mechanical Monitoring & Eddy-Current Transducer Performance

The 330101-00-50-10-02-00 proximity probe relies on precise eddy-current probe scaling to ensure linear voltage output over thermal and operational dynamic ranges. Proper field setup requires gap voltage validation (-10 VDC targets) measured at the Proximitor output terminals during mechanical center-point alignment. Sensor physical orientation and housing installations must strictly observe minimum shaft target material clearance and cross-talk suppression distances when mounting multiple probe tips in close radial proximity to prevent electromagnetic interaction between adjacent channels.

Frequently Asked Questions

Q: What is the recommended gap voltage verification procedure during installation?

A: Adjust the probe position using a mechanical micrometer or multimeter until the Proximitor output voltage reads -10.0 VDC, corresponding to the mechanical midpoint of the 80 mil linear range for AISI 4140 steel target material.

Q: How does the ClickLoc connector prevent accidental disconnections in high-vibration environments?

A: The ClickLoc miniature coaxial connector features a positive locking mechanism that physically latches upon full engagement, preventing rotational loosening caused by rotor dynamics and machine housing vibration.

Field Installation Guidelines

  1. Ensure the mounting thread engagement utilizes proper torque limits for 3/8-24 UNF threads to prevent thread shearing or probe tip casing deformation.
  2. Maintain clean, dry, and contaminant-free connector interfaces prior to mating ClickLoc connectors. Use protective connector covers during cable pull operations.
  3. Observe minimum bend radius limits for the 1.0 metre coaxial cable (minimum 25.4 mm bend radius) to avoid internal conductor strain or signal impedance degradation.
  4. Route probe cables through grounded metallic conduit, isolated from high-voltage AC power lines, to prevent cross-talk noise and electromagnetic interference.
  5. Verify total system length matching (1.0 metre probe combined with appropriate extension cable and Proximitor sensor) to guarantee calibration accuracy.

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