330102-00-40-10-11-CN Bently Nevada 3300 XL 8 mm Proximity Probe

Overview

The 330102-00-40-10-11-CN (330102-00-40-10-11) is a cornerstone component of the Bently Nevada 3300 XL 8 mm Proximity Transducer System. This eddy-current probe is specifically engineered for non-contact measurement of static and dynamic shaft displacement, including radial vibration, axial thrust position, and speed/keyphasor applications. Featuring a 3/8-24 UNF threaded body and integrated stainless steel armor, this probe is designed to withstand the turbulent conditions inside industrial machinery housings. By delivering high-linearity signals to a 3300 XL Proximitor Sensor, the 330102-00-40-10-11-CN enables precise condition monitoring for critical rotating assets such as steam turbines, centrifugal compressors, and cooling tower fans, effectively preventing catastrophic failures through early mechanical fault detection.

Suffix Breakdown

The model number 330102-00-40-10-11-CN is defined by the following technical configurations:

• 330102: 3300 XL 8 mm Probe with 3/8-24 UNF threads and factory-installed stainless steel armor.

• 00 (Unthreaded Length): 0.0 inches; the probe case is fully threaded for maximum mounting flexibility.

• 40 (Overall Case Length): 4.0 inches total housing length.

• 10 (Total Length): 1.0 meter (3.3 feet) integrated cable length.

• 11 (Connector/Cable Type): Equipped with the miniature coaxial ClickLoc connector and includes connector protectors for enhanced interface durability.

• CN (Agency Approval): Certified for hazardous areas under Chinese NEPSI standards and international compliance protocols.

Technical Specifications

Technical FAQs

Does this probe require a specific extension cable?

Yes, the 330102-00-40-10-11-CN must be used with a 3300 XL extension cable. For a 1.0-meter probe, a 4.0-meter or 8.0-meter extension cable is typically used to reach a total system length of 5.0 or 9.0 meters, matching the Proximitor Sensor's calibration.

What is the benefit of the ClickLoc connector (Option 11)?

The ClickLoc connector features a robust, moisture-resistant design that "clicks" when fully seated, preventing accidental disconnection due to vibration and ensuring a low-impedance electrical path for the RF signal.

Is this probe compatible with older 3300 series Proximitors?

While the 3300 XL 8 mm probe is physically compatible with non-XL 3300 systems, it is highly recommended to use the complete 3300 XL system to achieve the advertised 7.87 V/mm (200 mV/mil) linearity and improved thermal stability.

Engineering & Installation Guide

Probe Gapping and Linearity

During installation, the probe must be positioned within its linear range. Connect a digital multimeter to the Proximitor output and adjust the probe position until the "Gap Voltage" reads approximately -10 VDC (the midpoint of the -2 to -18 VDC linear range). Ensure the locknut is torqued correctly to prevent the probe from "backing out" during machine operation.

Magnetic Side-Loading and Clearances

To prevent "side-loading" or interference with the measurement signal, maintain a minimum clearance of two tip diameters (16 mm) between the probe tip and any surrounding conductive material other than the target shaft. Failure to provide adequate clearance will result in an incorrect scale factor and non-linear vibration readings.

Cable Protection and Routing

The integrated stainless steel armor protects the coaxial cable from mechanical abrasion and light crushing. However, avoid routing the cable near high-voltage AC lines. Use the provided connector protectors to prevent oil and moisture ingress at the probe-to-extension cable junction, as contamination is the leading cause of signal "noise" or false alarms.