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The Bently Nevada 330104-00-05-10-02-00, also cataloged as the 330104 Proximity Probe, operates as a dedicated hardware component for non-contacting displacement measurement within the 3300 XL 8 mm Proximity Transducer System. The component tracks dynamic shaft movement and static position parameters by monitoring eddy current variations relative to a conductive target material, transmitting high-frequency analog signals directly to a designated Proximitor Sensor.

Suffix Breakdown & Model Matrix

Code Option Category Technical Configuration
330104 Base Model 3300 XL 8 mm Proximity Probe (M10 x 1 Metric Thread)
00 Unthreaded Length 0 mm (Fully threaded case)
05 Overall Case Length 50 mm
50 Total Length 5.0 Metres (16.4 feet)
11 Connector/Cable ClickLoc connector with connector protector and armor
00 Agency Approval Not required / Standard

Hardware Specifications

Parameter Specification
Model 330104-00-05-50-11-00
Brand Bently Nevada
Origin U.S.A.
Probe Tip Diameter 8.0 mm
Linear Range 2.0 mm (80 mils)
Nominal Scale Factor 7.87 V/mm (200 mV/mil)
Cable Impedance 75 Ohm nominal
Tip Material Polyphenylene sulfide (PPS)
Armor Material Flexible Stainless Steel (SST)
Operating Temp -51 to +177 deg C
Power Consumption Determined by external Proximitor loop
Dimensions M10 x 1 thread, 50 mm case length, 5.0 m total length
Weight 2.0 kg (Shipping weight)

Eddy-Current Probe Scaling & Calibration

The system relies on calibrated eddy-current probe scaling to ensure linear response over the entire 2.0 mm detection range. During deployment, a critical gap voltage validation must be executed; setting the initial physical proximity to establish a -10 VDC target voltage centers the output within the linear spectrum. This precise geometric placement stabilizes the loop against rotor dynamics fluctuations and establishes the required boundary conditions for internal cross-talk suppression when adjacent probes are arrayed in close radial proximity on the same machine plane.

Frequently Asked Questions

Q: Can this 5.0-meter probe be coupled with a standard extension cable?

A: No. This probe features a total length of 5.0 metres and must interface directly with a 5.0-meter Proximitor Sensor without intermediate extension cabling. Adding an extension cable alters the 75 Ohm loop impedance and invalidates the nominal scale factor calibration.

Q: What specific ingress protection does the Option 11 connector protector provide?

A: The factory-installed connector protector provides physical and chemical isolation for the gold-plated ClickLoc interface against splash oils, moisture, and particulate matter typical of bearing housings. It does not support permanent fluid submersion.

Q: What targets are compatible with the factory-calibrated scale factor?

A: The standard scale factor of 7.87 V/mm assumes an AISI 4140 electric steel target. Using alternative target materials with different magnetic permeabilities or electrical conductivities requires recalibration of the receiver loop.

Field Installation Guidelines

  • Torque Limitations: When mounting the M10 x 1 threaded housing into the machine port, do not exceed the structural limit of 33.9 N-m (300 in-lb) to prevent distortion of the probe tip or casing.
  • Armor and Cable Routing: Maintain a minimum bend radius of 25.4 mm (1.0 inch) along the flexible stainless steel armor to avoid crimping or fracturing the internal 75 Ohm coaxial core.
  • Isolation and Grounding: The coaxial outer shield must maintain insulation from the machine case ground along the entire run. Grounding must terminate strictly at the Proximitor Sensor end within the designated instrument enclosure.

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