Bently Nevada 330104-00-08-05-02-05 3300 XL 8mm Proximity Probe

Technical Function and System Overview

The Bently Nevada 330104-00-08-05-02-05 operates as a core sensor within the 3300 XL 8mm Proximity Transducer System. This eddy current probe tracks shaft vibration and axial displacement by measuring the microscopic distance between the probe tip and a conductive target. Because the sensor employs non-contact technology, it prevents mechanical wear while delivering continuous, high-speed data to the 3500 Monitoring System. Consequently, this probe allows industrial facilities to implement sophisticated machinery protection and automated shutdown protocols for critical rotating assets.

Detailed Configuration Specifications

• Brand: Bently Nevada
• Model Number: 330104-00-08-05-02-05
• Probe Type: 3300 XL 8mm Proximity Probe
• Thread Type: 1/2-20 UNF English Thread
• Unthreaded Length: 0.0 inches
• Overall Case Length: 0.8 inches
• Total Length: 0.5 meters
• Connector Option: Miniature coaxial ClickLoc connector with connector protector
• Agency Approvals: Multiple approvals (ATEX, IECEx, CSA) for hazardous locations
• Operating Temperature: -52°C to +177°C
• Linear Range: 2.0 mm (80 mils)
• Target Material: AISI 4140 Steel

Performance Benefits and Industry Applications

Maintenance teams deploy the 330104 proximity probe to safeguard high-capital equipment in power generation, refining, and chemical processing. This probe specifically utilizes a polyphenylene sulfide (PPS) tip, which successfully resists chemical degradation and moisture ingress in harsh environments. Furthermore, the 3300 XL system offers a significantly improved linear range and temperature stability compared to previous models. Industrial operators typically install these probes to monitor:

• Radial vibration in fluid-film bearing housings
• Axial thrust position in steam and gas turbines
• Phase reference using Keyphasor signals
• Eccentricity and shaft expansion in large-scale compressors

Installation and Calibration Requirements

Achieving peak accuracy requires that the technician matches the total electrical length of the probe and extension cable to the Proximitor Sensor’s requirements—usually 5.0 or 9.0 meters. Because this specific probe features a 0.5-meter lead, the user must pair it with the appropriate extension cable to reach the total system length. Additionally, the included connector protector (02 option) shields the coaxial link from oil and environmental contaminants. This protection effectively eliminates signal noise and grounding issues, which ensures that the monitor receives clean, actionable vibration data for predictive maintenance analysis.