Bently Nevada 330104-00-08-50-01-05 3300 XL 8 mm Proximity Probe Buyer's Guide

Product Overview

When machinery vibration threatens uptime, the Bently Nevada 330104-00-08-50-01-05 3300 XL 8 mm Proximity Probe delivers precise displacement measurements. This probe is part of the 3300 XL series, designed for non-contact sensing of shaft motion in rotating equipment. With a 5.0 meter (16.4 feet) total length and a miniature coaxial ClickLoc connector, it integrates seamlessly into existing monitoring systems. The probe tip is made of polyphenylene sulfide (PPS), and the case uses AISI 303 or 304 stainless steel for durability in harsh environments.

Technical Specifications Breakdown

Understanding key specs helps you match this probe to your application. The 330104-00-08-50-01-05 features an unthreaded length of 00 mm and an overall case length of 80 mm. Its total length option of 50 corresponds to 5.0 meters, designed exclusively for use with the 5 meter Proximitor sensor. The nominal probe DC resistance (RPROBE) from center conductor to outer conductor is 8.73 ± 0.50 Ω at 5.0 meters. Agency approvals include CSA, ATEX, and IECEx, making it suitable for hazardous locations. The probe seals differential pressure between tip and case using a Viton O-ring.

Industry Applications

This proximity probe excels in turbomachinery, compressors, pumps, and motors where shaft vibration monitoring is critical. Its ATEX and IECEx certifications allow installation in explosive atmospheres such as oil and gas refineries or chemical plants. The 8 mm diameter and PPS tip provide reliable performance in high-temperature environments up to +232°C (T1 classification). By choosing the 330104-00-08-50-01-05, you ensure accurate data for predictive maintenance, reducing unplanned downtime.

Installation & Setup Guidance

Proper installation is key to accurate readings. Mount the probe with the M10 x 1 thread into a suitable bracket or housing, ensuring a clean target surface. Gap the probe at 1.27 mm (50 mils) for optimal linear range when using an AISI 4140 steel target. Connect the miniature coaxial ClickLoc connector to the 5 meter Proximitor sensor only—mixing cable lengths may affect performance. Verify the power supply provides -17.5 Vdc to -26 Vdc with a 10 kΩ load for standard operation.

Maintenance & Reliability

Routine inspection of the probe tip and cable for physical damage ensures long service life. The stainless steel case resists corrosion, and the Viton O-ring maintains pressure sealing. Check the connector integrity periodically. For safety-rated installations, follow the manufacturer's guidelines for periodic testing. This probe's robust design minimizes replacement frequency, contributing to lower total cost of ownership.

Selection Guide & Purchasing Advice

Before ordering, confirm your system requirements: the 330104-00-08-50-01-05 is designed for 5 meter Proximitor sensors only. Verify the target material and gap settings to match your application. For hazardous area use, ensure the installation follows drawing 141092 (intrinsically safe) or 140979 (nonincendive). plcmatrix.com offers this probe with expert support to help you select the right configuration for your machinery.