Bently Nevada 330104-15-23-10-02-00 3300 XL 8 mm Proximity Probe

Introduction

When a critical rotating machine begins to exhibit subtle changes in vibration, the ability to detect those changes accurately can mean the difference between a planned maintenance outage and a catastrophic failure. The Bently Nevada 330104-15-23-10-02-00 3300 XL 8 mm proximity probe provides the precision measurement needed to monitor shaft vibration and position in demanding industrial environments. This metric probe, with its M10x1 thread and armored construction, is designed for permanent installation in turbo-machinery, compressors, and large pumps where reliable data is essential for protection and diagnostics.

Technical Specifications

The 330104-15-23-10-02-00 is a 3300 XL 8 mm proximity probe with a metric M10x1 thread and armor. Key parameters include an unthreaded length of 150 mm, overall case length of 230 mm, and a total length of 1.0 meter (3.3 feet). It uses a miniature ClickLoc coaxial connector and does not require agency approval. The probe tip is made of polyphenylene sulfide (PPS), and the case is AISI 303 or 304 stainless steel. Nominal DC resistance from center conductor to outer conductor is 7.59 ± 0.50 ohms for the 1.0 m probe length. The linear range is 2 mm (80 mils), starting at approximately 0.25 mm (10 mils) from the target, with a recommended gap setting for radial vibration of -9 Vdc (approximately 1.27 mm or 50 mils). Operating and storage temperature for the standard probe is -52°C to +177°C (-62°F to +350°F).

Industry Applications

This probe is ideal for monitoring radial vibration and axial position in steam turbines, centrifugal compressors, and large electric motors. In a typical application, the 330104-15-23-10-02-00 mounts permanently into a bearing housing to measure shaft displacement relative to the bearing. The 2 mm linear range provides ample coverage for most machinery protection requirements, and the PPS tip withstands harsh lubricants and contaminants. For retrofitting older installations, the metric M10x1 thread simplifies replacement of existing probes without modifying the mounting boss.

Installation & Setup Guidance

When installing the 330104-15-23-10-02-00, ensure the mounting surface is clean and the thread engagement does not exceed 15 mm. Recommended case torque for standard forward mounted probes is 11.2 N·m (100 in·lbf), with a maximum of 33.9 N·m (300 in·lbf). Field wiring should use 0.2 to 1.5 mm² (16 to 24 AWG) three-conductor shielded triad cable, with a maximum length of 305 meters (1,000 feet) between the probe and the monitor. For best signal integrity, use tinned field wiring and observe the frequency response graphs for signal rolloff at high frequencies with longer cable runs.

Maintenance & Reliability

Routine inspection of the probe cable and connector for damage is recommended. The probe is designed to seal differential pressure between the tip and case using a Viton O-ring, but it is not pressure tested prior to shipment. Exposing the probe to temperatures below -34°C (-30°F) may cause premature failure of the pressure seal. The probe exhibits less than a 3% change in Average Scale Factor (ASF) when tested in 93% humidity per IEC 68-2-3 for up to 56 days, indicating excellent environmental stability.

Compatibility & Integration

The 330104-15-23-10-02-00 is part of the 3300 XL system and works with Bently Nevada 3300 XL Proximitor sensors and monitors. For intrinsically safe installations, it can be used with zener barriers per drawing 141092 or galvanic isolators for Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga. For non-incendive circuits, use per drawing 140979 for Class I, Zone 2: AEx/Ex nA IIC T5…T1 Gc. The probe is compatible with standard 3-conductor shielded triad cable up to 305 meters.

Buying Guide & Purchasing Advice

Before ordering the 330104-15-23-10-02-00, verify that your mounting thread is M10x1 and that the total probe length of 1.0 meter meets your installation requirements. Confirm the operating temperature range of your application falls within the standard probe limits of -52°C to +177°C. For extended temperature ranges or custom pressure testing, contact the manufacturer. Plcmatrix.com offers this Bently Nevada probe as a new, surplus, or obsolete part, ensuring availability for both new installations and legacy system repairs. Contact our team to confirm current stock and lifecycle status before placing your order.