Bently Nevada 330105-02-12-05-02-05 3300 XL 8 mm Reverse Mount Probe

Product Introduction

When vibration monitoring in rotating machinery demands reliable, high-temperature performance, the Bently Nevada 330105-02-12-05-02-05 3300 XL 8 mm Reverse Mount Probe delivers precision sensing in harsh environments. This eddy-current probe measures shaft vibration and position with exceptional stability, using a polyphenylene sulfide (PPS) tip and AISI 303 or 304 stainless steel case for durability. The reverse mount design simplifies installation in confined spaces, making it a trusted choice for critical asset protection.

Technical Specifications Breakdown

The 330105-02-12-05-02-05 includes a total length option of 0.5 meter (1.6 feet) and a miniature ClickLoc coaxial connector for secure signal transmission. Its nominal probe DC resistance from center conductor to outer conductor is 7.45 ± 0.50 Ω at 0.5 m length. The probe case torque rating has a maximum of 22.6 N·m (200 in·lbf) and a recommended value of 7.5 N·m (66 in·lbf). The probe weighs 323 g/m (11.4 oz). Operating and storage temperature for the standard probe ranges from -52°C to +177°C (-62°F to +350°F). An extended temperature range probe option supports -52°C to +218°C (-62°F to +425°F) for the tip and -51°C to +260°C (-60°F to +500°F) for the cable and connector. Exposing the probe to temperatures below -34°C (-30°F) may cause premature pressure seal failure.

Industry Applications

In steam turbines, gas compressors, and large pumps, the 330105-02-12-05-02-05 provides critical vibration data to prevent unplanned downtime. Its reverse mount configuration allows installation behind bearing housings where space is limited, solving a common pain point in retrofit projects. The extended temperature range option suits high-heat zones near turbine shafts, ensuring accurate readings even under thermal stress.

Installation & Setup Guidance

Mount the probe using the recommended torque of 7.5 N·m (66 in·lbf) to avoid damaging the threads or altering sensitivity. Ensure the probe tip does not contact the target surface during operation. The miniature ClickLoc connector simplifies cable attachment and reduces signal loss. For best results, verify the probe gap voltage according to the system manual before finalizing the installation.

Maintenance & Reliability

Regularly inspect the probe cable and connector for wear, especially in high-vibration environments. The stainless steel case resists corrosion, but check for debris buildup near the tip. Avoid exposing the probe to temperatures below -34°C (-30°F) to maintain the pressure seal integrity. Periodic calibration checks with a known target can confirm measurement accuracy over time.

Selection Guide & Purchasing Advice

Before ordering the 330105-02-12-05-02-05, confirm your system requires the 0.5 meter cable length and miniature ClickLoc connector. Verify agency approval needs match the CSA, ATEX, and IECEx certifications included. For extended temperature applications, select the appropriate probe variant. plcmatrix.com stocks this model as new and original in factory packing with a 12-month warranty, ensuring reliable delivery for your maintenance or upgrade project.