Bently Nevada 330104-05-11-90-11-05 3300 XL 8 mm Proximity Probe for Critical Machinery Monitoring

Product Introduction

When you need reliable vibration and position monitoring in harsh industrial environments, the Bently Nevada 330104-05-11-90-11-05 3300 XL 8 mm Proximity Probe delivers precision and durability. This probe is part of the 3300 XL 8 mm series, designed for non-contact measurement of shaft displacement and vibration in rotating machinery. With a 9.0 meter (29.5 feet) total length and a miniature coaxial ClickLoc connector with connector protector and FluidLoc cable, it ensures secure signal transmission in demanding conditions.

Technical Specifications Breakdown

The 330104-05-11-90-11-05 features a probe tip made of Polyphenylene sulfide (PPS) and a case constructed from AISI 303 or 304 stainless steel (SST). These materials provide excellent chemical resistance and mechanical strength. The probe has a nominal DC resistance of 9.87 ± 0.50 ohms from center conductor to outer conductor at 9.0 meters length. It is designed to seal differential pressure between the probe tip and case using a Viton O-ring. Agency approvals include CSA, ATEX, and IECEx, making it suitable for hazardous locations. The probe operates with a -17.5 Vdc to -26 Vdc power supply when installed with a non-incendive circuit, consuming 12 mA maximum. Sensitivity is less than 2 mV change in output voltage per volt change in input voltage, and output resistance is 50 ohms.

Industry Applications

This proximity probe is ideal for monitoring radial vibration and axial position in turbines, compressors, pumps, and motors. In a petrochemical plant, the 330104-05-11-90-11-05 provides accurate shaft displacement data even in high-temperature environments up to +232°C (probe only) for T1 temperature classification. Its robust construction and agency approvals make it a reliable choice for critical machinery protection systems.

Installation & Setup Guidance

Proper installation is key to achieving accurate measurements. The probe uses an M10 x 1 thread and comes with an unthreaded length of 50 mm. The overall case length is 110 mm. Ensure the probe is gapped at 1.27 mm (50 mils) to an AISI 4140 steel target for optimal performance. Use the miniature coaxial ClickLoc connector for a secure connection. When installing in hazardous areas, follow the appropriate wiring diagrams: for intrinsically safe installations use drawing 141092; for non-incendive circuits use drawing 140979.

Maintenance & Reliability

Regular inspection of the probe tip and cable for wear or damage is recommended. The PPS tip and stainless steel case resist corrosion and abrasion, extending service life. Verify the Viton O-ring seal integrity periodically to maintain pressure sealing. Environmental temperature ranges vary by temperature classification—for example, T5 rating permits ambient temperatures from -55°C to +40°C. Following the manufacturer's guidelines ensures long-term reliability and reduces unplanned downtime.

Selection Guide & Purchasing Advice

Before purchasing the 330104-05-11-90-11-05, verify that your system requires a 9.0 meter cable length and the miniature coaxial ClickLoc connector option. Confirm compatibility with your existing 3300 XL 8 mm Proximitor Sensor and extension cable. This probe is designed for use with AISI 4140 steel targets; using other targets may affect accuracy. For current availability and lifecycle status, contact plcmatrix.com, a trusted supplier of industrial automation components. They can assist with new, surplus, and obsolete parts from leading brands.