Bently Nevada 330104-03-12-10-02-00 3300 XL 8 mm Proximity Probe

Introduction

As rotating machinery grows more complex, precise vibration monitoring becomes essential for preventing unplanned downtime. The Bently Nevada 330104-03-12-10-02-00, a 3300 XL 8 mm proximity probe, delivers accurate displacement measurements in harsh industrial environments. This probe is designed for continuous operation in applications ranging from steam turbines to compressors, where reliable data is critical for asset protection.

Technical Specifications Breakdown

The 330104-03-12-10-02-00 features a polyphenylene sulfide (PPS) probe tip and an AISI 303 or 304 stainless steel case, ensuring chemical resistance and mechanical durability. It has an unthreaded length of 30 mm, an overall case length of 120 mm, and a total length of 1.0 meter (3.3 feet). The probe uses a miniature coaxial ClickLoc connector with standard cable. Nominal probe DC resistance is 7.59 ± 0.50 Ω for the 1.0 m length. It accepts a 3300-series 5 mm or 3300 XL 8 mm probe and extension cable, requires -17.5 Vdc to -26 Vdc power (12 mA max), and has an output resistance of 50 Ω. Sensitivity is less than 2 mV change per volt change in input voltage.

Industry Applications

This proximity probe is ideal for monitoring shaft vibration and position in critical rotating equipment such as turbines, pumps, and motors. In a typical steam turbine installation, the 330104-03-12-10-02-00 provides real-time displacement data to detect early signs of bearing wear or imbalance. Its robust construction allows it to withstand high temperatures up to +232°C (T1 rating) and differential pressure sealing with a Viton O-ring.

Installation & Setup Guidance

For accurate measurements, mount the probe with a gap of 1.27 mm (50 mils) to an AISI 4140 steel target. Ensure the cable is routed without sharp bends and the ClickLoc connector is securely fastened. When installed with intrinsically safe zener barriers per drawing 141092 or galvanic isolators, the probe meets Class I, Zone 0 requirements. For nonincendive circuits per drawing 140979, it is suitable for Class I, Zone 2 environments.

Maintenance & Reliability

Regular inspection of the probe tip and cable for physical damage is recommended. The PPS tip resists many chemicals, but avoid exposure to strong acids or bases. Verify the O-ring seal integrity during each maintenance cycle to maintain pressure rating. Given the probe's long service life, periodic calibration checks against a known target ensure measurement accuracy.

Selection Guide & Purchasing Advice

Before ordering, confirm that your system requires a 3300 XL 8 mm probe with M10 x 1 thread and the 1.0 m cable length. The 330104-03-12-10-02-00 is a direct replacement for earlier 3300 series probes. For current availability and lifecycle status, contact plcmatrix.com, a trusted supplier of Bently Nevada components.