Bently Nevada 330104-00-11-05-02-00 3300 XL 8 mm Proximity Probe, Metric

Product Introduction

When machinery vibration threatens uptime, the Bently Nevada 330104-00-11-05-02-00 provides precise, reliable measurements. This 3300 XL 8 mm proximity probe, metric version, is designed for critical rotating equipment monitoring. It features a polyphenylene sulfide (PPS) tip and AISI 303 or 304 stainless steel case, ensuring durability in harsh environments. The probe uses a miniature coaxial ClickLoc connector with standard cable for secure signal transmission.

Technical Specifications Breakdown

The 330104-00-11-05-02-00 offers a linear range of 2 mm (80 mils), starting at approximately 0.25 mm (10 mils) from the target. The recommended gap setting for radial vibration is -9 Vdc, approximately 1.27 mm (50 mils). Nominal probe DC resistance (RPROBE) from center conductor to outer conductor is 7.45 ± 0.50 Ω for the 0.5m length. The probe case thread is M10x1 with a maximum thread engagement of 15 mm. Maximum probe case torque is 33.9 N•m (300 in•lbf), with a recommended torque of 11.2 N•m (100 in•lbf).

Industry Applications

This proximity probe excels in monitoring radial vibration and axial position of turbines, compressors, pumps, and motors. In a typical steam turbine installation, the 330104-00-11-05-02-00 provides accurate shaft displacement data, enabling early detection of bearing wear or imbalance. Its extended temperature range supports applications from -52°C to +177°C (-62°F to +350°F) for standard probes, making it suitable for both cold climates and hot machinery environments.

Installation & Setup Guidance

For optimal performance, mount the probe with the recommended torque of 11.2 N•m (100 in•lbf). Use field wiring of 0.2 to 1.5 mm² (16 to 24 AWG) with a 3-conductor shielded triad cable and tinned field wiring. Maximum cable length between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). Set the gap to -9 Vdc (approximately 1.27 mm or 50 mils) for radial vibration measurements. Ensure the probe tip is clean and the target surface is smooth.

Maintenance & Reliability

Regularly inspect the probe cable and connector for damage. The Viton O-ring seals the probe against differential pressure, but probes are not pressure tested before shipment. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature pressure seal failure. The probe maintains less than 3% change in Average Scale Factor (ASF) when tested in 93% humidity per IEC standard 68 2 3 for up to 56 days, ensuring reliable operation in humid conditions.

Compatibility & Integration

The 330104-00-11-05-02-00 integrates with Bently Nevada 3300 XL Proximitor Sensors and monitoring systems. When installed with intrinsically safe zener barriers per drawing 141092 or galvanic isolators, it meets Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga; Class 1, Groups A, B, C, D; Class II, Groups E, F, G; Class III. For non-incendive circuits per drawing 140979, it meets Class I, Zone 2: AEx/Ex nA IIC T5…T1 Gc; Class 1, Division 2, Groups A, B, C, D; Class I, Zone 2: AEx/Ex ec IIC T5…T1 Gc.

Comparison with Similar Probes

Compared to standard 5 mm proximity probes, the 8 mm version offers a wider linear range (2 mm vs. typically 1.5 mm) and higher sensitivity. The 330104-00-11-05-02-00 includes armor for added mechanical protection, while many competing probes lack this feature. Its miniature coaxial ClickLoc connector simplifies installation versus older BNC-style connectors. The PPS tip resists chemical attack better than common epoxy tips, extending service life in aggressive environments.

Selection Guide & Purchasing Advice

Before ordering, verify the required probe length, thread size (M10x1), and cable length (0.5 meter). Confirm that your monitoring system supports the 3300 XL series. For applications needing extended temperature range up to +218°C (+425°F) for the probe tip, consider the extended temperature version. Contact plcmatrix.com for current availability and lifecycle status. We stock new, surplus, and obsolete parts from Bently Nevada and other leading brands.