Bently Nevada 330101-00-39-15-11-05 3300 XL 8 mm Proximity Probe

Product Overview

The 330101-00-39-15-11-05 is a high-performance eddy current sensor designed for the 3300 XL proximity transducer system. Engineered for critical machinery protection, this 330101-00-39-15-11-05 probe provides non-contacting displacement and vibration measurements on rotating shafts. It is widely deployed in high-stakes environments such as oil refineries, natural gas processing plants, and heavy mining operations to monitor steam turbines, centrifugal compressors, and large industrial motors. By delivering sub-micron resolution data to monitoring systems, this probe allows operators to detect early signs of shaft misalignment, bearing wear, or rotor imbalance. Implementing this sensor is a vital strategy for preventing catastrophic equipment failure, optimizing maintenance intervals, and minimizing expensive unplanned downtime in modern industrial facilities.

Suffix Breakdown

The alphanumeric configuration of the 330101-00-39-15-11-05 defines the specific mechanical and electrical parameters required for precise field installation:

• 330101: 3300 XL 8 mm Probe with 3/8-24 UNF threads, supplied without armor.

• -00 (Unthreaded Length): Specifies a 0.0 inch unthreaded length, meaning the entire case is threaded.

• -39 (Overall Case Length): Indicates an overall case length of 3.9 inches.

• -15 (Total Length): Provides a 1.5 meter (4.9 feet) total electrical length for the probe cable.

• -11 (Connector/Cable): Equipped with a miniature coaxial ClickLoc connector and factory-installed connector protector. Features FluidLoc cable technology to prevent oil and other liquids from wicking through the cable.

• -05 (Agency Approvals): Certified for global hazardous area use, including CSA, ATEX, and IECEx approvals.

Technical Specifications

Operational FAQs

Can I mix a 1.5-meter probe with a 9.0-meter extension cable?

No. To maintain system calibration and linearity, the total electrical length (probe plus extension cable) must match the Proximitor Sensor's requirements. Typically, you must pair this 1.5-meter probe with a 3.5-meter extension cable to reach a 5.0-meter system, or a 7.5-meter cable for a 9.0-meter system.

What is the benefit of the FluidLoc cable option?

The FluidLoc cable (Option 11) is specifically designed for environments where oil, coolant, or other industrial fluids are present. It contains an internal block that prevents these liquids from wicking through the cable interior and reaching the connector or the Proximitor Sensor, protecting the electronic integrity of the loop.

Is this probe compatible with older 3300 systems?

Yes. The 3300 XL 8 mm components are designed to be backward compatible with non-XL 3300 8 mm components. However, for maximum performance and stability, we recommend using a complete 3300 XL signal chain.

Engineering & Installation Guide

Gap Setting and Voltage Verification

Proper gapping is essential for accurate measurement. After installing the probe into the mounting bracket, use a digital multimeter to measure the DC output voltage at the Proximitor. For a standard 3300 XL system, the target gap is typically at the center of the linear range, which corresponds to -10.0 VDC. Adjust the probe position until this voltage is achieved while the shaft is at its normal axial reference point.

Connector Protection and Torque

The ClickLoc connector (Option 11) should be finger-tightened. Do not use pliers, as this can damage the gold-plated contacts. Ensure the connector protector is correctly seated to shield the junction from contaminants and physical strain. When threading the probe into the housing, do not exceed the maximum recommended torque for 3/8-24 threads (typically 13.5 Nm or 120 in-lb) to prevent case deformation.

Chemical and Extreme Environment Durability

The 3300 XL 8 mm probe is built with a Polyphenylene Sulfide (PPS) tip, offering excellent resistance to chemical corrosion and high temperatures up to 177 deg C. For installations in high-vibration areas, ensure the cable is properly supported with stainless steel clips every 30 cm to prevent fatigue failure of the coaxial leads.