Bently Nevada 330101-00-65-10-11 Probe

3300 XL 8mm Proximity Probe with FluidLoc Cable

Product Introduction

The 330101-00-65-10-11 is a forward-mount 8 mm probe from the Bently Nevada 3300 XL series. This configuration combines a long 6.5-inch case with a FluidLoc cable, which makes it suitable for installations that need deeper reach and extra protection against oil migration. The 3/8-24 UNF thread fits standard mounting sleeves. Meanwhile, the 1.0-meter integral cable ends in a miniature ClickLoc connector with a factory-installed protector. Because it carries no agency approval suffix, this probe suits general-purpose machinery monitoring where hazardous-area certification is not required.

Technical Specifications

The 330101-00-65-10-11 operates on the eddy-current principle and requires a compatible 3300 XL Proximitor to produce the standard output of 7.87 V/mm (200 mV/mil).

Specifically, the nominal DC resistance from center conductor to outer conductor is 7.59 Ω ± 0.50 Ω at the 1.0-meter length. The probe tip is molded from polyphenylene sulfide (PPS), and the case uses AISI 303 or 304 stainless steel. The FluidLoc cable is a 75 Ω triaxial design with FEP insulation. Its internal barrier prevents oil, moisture, and other fluids from wicking through the cable core. Additionally, the miniature ClickLoc connector locks into place and resists loosening under vibration.

Mechanical and Environmental Parameters

The probe features a fully threaded 6.5-inch (165 mm) case with 0.0 inches of unthreaded length. This allows flexible depth adjustment in deep or crowded bearing housings. The 3/8-24 UNF thread accepts a maximum engagement of 0.563 inches. For forward-mount probes, Bently Nevada recommends a case torque of 11.2 N·m (100 in·lbf), with a maximum rating of 33.9 N·m (300 in·lbf).

Furthermore, the standard operating and storage temperature range is -52°C to +177°C (-62°F to +350°F). Avoid exposing the probe to temperatures below -34°C (-30°F), since cold shock can damage the Viton O-ring pressure seal. The probe also shows less than a 3% change in Average Scale Factor after 56 days at 93% relative humidity, tested to IEC standard 68-2-3.

Installation Guide

First, confirm the target material and set the correct gap voltage with a compatible 3300 XL Proximitor. Next, thread the fully threaded case into the mounting sleeve and adjust depth until the gap reaches approximately -9 Vdc for radial vibration, about 1.27 mm (50 mils). After that, apply the recommended 11.2 N·m torque to seat the probe securely. Connect the ClickLoc plug to the extension cable and verify the connector protector is in place. Finally, route the unarmored cable through protected conduit and keep it away from drives and high-voltage lines to reduce electrical noise.

Packaging List

• 1x Bently Nevada 330101-00-65-10-11 Proximity Probe

• 1x Connector Protector (Pre-installed)

• Shipping via Fedex, UPS, DHL

FAQ

Q1: What does the "65" in the model code represent?
A: The "65" sets the overall case length option to 6.5 inches (165 mm). Combined with the "00" unthreaded length, this gives a fully threaded case for deep mounting.

Q2: What is the purpose of the FluidLoc cable on this probe?
A: The FluidLoc design creates an internal barrier that stops oil and other liquids from leaking through the cable interior. This protects signal integrity in oil-rich environments such as turbine bearing housings.

Q3: Does this probe carry hazardous-area certifications?
A: No. The model code ends with "11" for connector and cable type, with no agency approval suffix. For CSA, ATEX, or IECEx approval, a variant ending in "05" is required.

Q4: What gap voltage should I set for vibration measurement?
A: Set approximately -9 Vdc, which corresponds to about 1.27 mm (50 mils). This falls within the linear range of the 3300 XL 8 mm system.

Q5: Is armor available on this probe?
A: No. The 330101 base number indicates an unarmored probe. Armor is a separate option available on other 3300 XL configurations for extra cable protection.