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The Bently Nevada 330104-00-03-50-02-00, also cataloged as the 330104 Proximity Sensors, operates as a dedicated hardware component for high-frequency eddy-current displacement sensing within 3300 XL Transducer Systems. It routes dynamic radio frequency fields to monitor static shaft position and relative vibration amplitudes across rotating machinery protection loops.

Suffix Breakdown & Model Matrix

Option Code Designation Parameter Value / Option Description
330104 Base Model 3300 XL 8 mm Proximity Probe, M10 x 1 thread, with armor
-00 Unthreaded Length Option 0 mm
-03 Overall Case Length Option 30 mm
-50 Total Length Option 5.0 meters (16.4 feet)
-02 Connector and Cable Type Option Miniature coaxial ClickLoc connector, standard cable
-00 Agency Approval Option Not required

Hardware Specifications

Parameter Specification
Model 330104-00-03-50-02-00
Base Model 330104
Brand Bently Nevada
Series 3300 XL 8 mm
Product Type Proximity Sensors
Origin USA
Case Geometry & Threading M10 x 1 thread, 30 mm overall case length, 0 mm unthreaded length
Protection Armor Flexible armor flexible sleeving included
Total Cable Length 5.0 meters (16.4 feet)
Connector Type Miniature coaxial ClickLoc connector
Agency Approval Option Unapproved / Not required (-00 option)
Operating Temp -51 to +177 deg C (Standard 3300 XL temperature threshold)
Power Consumption Passive physical component (0 W)
Dimensions 8 mm probe tip diameter, 30 mm case length
Weight 0.323 kg (Net Weight) / 1.5 kg (Shipping Weight)

Eddy-Current Probe Scaling & Rotor Dynamics

The 330104-00-03-50-02-00 probe generates a radio frequency magnetic field via an 8 mm tip coil to sense physical distance relative to conductive target surfaces. Controlled internal capacitance maintains strict eddy-current probe scaling at a standard 7.87 V/mm (200 mV/mil) sensitivity when tied to a matched 5.0-meter 3300 XL Proximitor sensor. Proper mechanical positioning provides gap voltage validation targeting -10 VDC at nominal center-gap settings, ensuring optimal cross-talk suppression and accurate measurement of dynamic rotor dynamics.

Frequently Asked Questions

Q: Why is gap voltage validation targeting -10 VDC necessary during installation?

A: Setting the probe gap to produce -10 VDC at the Proximitor output places the sensor at the midpoint of its linear voltage range, maximizing dynamic vibration headroom in both directions.

Q: How does the ClickLoc connector option (-02) ensure mechanical locking?

A: The ClickLoc miniature coaxial connector incorporates a friction detent collar that snaps over the female connector interface, preventing rotational back-off caused by machinery vibration.

Q: Can the 5.0-meter cable option (-50) be shortened in the field?

A: No, cutting or altering the 5.0-meter cable changes system capacitance and inductance, corrupting the eddy-current calibration scale factor and invalidating output accuracy.

Field Installation Guidelines

  1. Inspect the M10 x 1 threaded mounting bore for debris, thread damage, or metal shavings prior to inserting the probe assembly.
  2. Screw the probe into the threaded mounting bracket by hand until the tip approaches the target shaft face.
  3. Wire the probe lead to the matching 3300 XL Proximitor sensor and monitor output voltage using a calibrated multimeter. Adjust insertion depth until reaching the -10 VDC baseline gap voltage target.
  4. Tighten the probe locknut against the bracket face to lock the mechanical position without twisting the armored cable body.
  5. Secure the ClickLoc coaxial connector to the Proximitor input interface and slide an insulating connector protector boot over the junction to eliminate ground loops.

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