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Configured for non-contacting displacement measurement in rotating machinery, the Bently Nevada 330101-00-79-15-02-05 (330101 8 mm Proximity Probe) provides direct physical signal execution via an eddy-current induction circuit.

Suffix Breakdown & Model Matrix

Option Description
330101 3300 XL 8 mm Probe, 3/8-24 UNF thread
00 Unthreaded length: 0.0 in
79 Overall case length: 7.9 in
15 Total length: 1.5 meter
02 Miniature coaxial ClickLoc connector, standard cable
05 Agency approval: CSA, ATEX, IECEx

Hardware Specifications

Parameter Specification
Model 330101-00-79-15-02-05
Brand Bently Nevada
Origin USA
Weight Not specified
Dimensions 7.9 in case length
Operating Temp -51 deg C to +177 deg C
Power Consumption Passive (Powered by Proximitor)
Probe Tip Material Polyphenylene Sulfide (PPS)
Case Material AISI 303/304 Stainless Steel

Mechanical Monitoring and Rotor Dynamics

The 330101 series utilizes an eddy-current principle to detect the proximity of a conductive target. Proper scaling is required to maintain the standard 7.87 V/mm (200 mV/mil) output sensitivity provided by the matching 3300 XL Proximitor sensor. During installation, the gap voltage must be validated against a -10 VDC target at the mid-linear range to ensure linear response. Signal integrity depends on minimizing cross-talk between adjacent probes and ensuring the target material surface conforms to Bently Nevada material correction specifications to maintain accurate rotor dynamic vibration data.

Frequently Asked Questions

Q: Can the 330101 probe be utilized with legacy 3300 Proximitor sensors?

A: The 330101 8 mm probe is calibrated for the 3300 XL system. While physically compatible with legacy 3300 (non-XL) systems, the Proximitor sensor must be recalibrated to maintain the system's 200 mV/mil sensitivity.

Q: What are the requirements for the ClickLoc connector during assembly?

A: The Miniature coaxial ClickLoc connector must be fully seated and kept free of contaminants to prevent impedance fluctuations in the 50 ohm coaxial circuit.

Field Installation Guidelines

  1. Ensure the probe mounting bracket is rigid to minimize resonance effects at the probe location.
  2. Verify that the total system length (probe plus extension cable) matches the Proximitor sensor calibration (5 m or 9 m).
  3. Use the provided locknut to secure the probe position; ensure the locknut is tightened to prevent loosening due to machine-induced vibration.
  4. Perform a bench-top gap verification using a calibrated micrometer to confirm the -10 VDC setpoint before full installation into the machinery casing.
  5. Ensure the cable is not subjected to sharp bends or mechanical tension during routing.

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