Bently Nevada 330103-00-03-05-12-CN 3300 XL 8 mm Proximity Probe

Product Overview

The Bently Nevada 330103-00-03-05-12-CN is a 3300 XL 8 mm Proximity Probe designed for precise, non-contact displacement measurements in rotating machinery. This probe is essential for monitoring shaft vibration and position, helping to prevent costly unplanned downtime. With a polyphenylene sulfide (PPS) tip and AISI 303 or 304 stainless steel case, it offers durability in harsh industrial environments. The 0.5 meter (1.6 feet) total length and miniature coaxial ClickLoc connector with FluidLoc cable ensure reliable signal transmission. Choosing this probe reduces long-term maintenance costs by providing accurate, stable readings that extend machine life.

Technical Specifications Breakdown

Key parameters for the 330103-00-03-05-12-CN are listed below for quick reference:

Industry Applications

In a cost-benefit context, its precise linear range (2 mm) and stable output reduce false alarms and maintenance interventions. For example, in a steam turbine train, using this probe with the recommended -9 Vdc gap setting ensures accurate shaft position data, preventing costly rotor rubs. The probe's ability to operate from -52°C to +177°C makes it suitable for both cold climate and high-temperature process areas, minimizing the need for multiple probe types.

Installation & Setup Guidance

When installing the 330103-00-03-05-12-CN, ensure the probe tip is clean and the target surface is smooth. Use the M10x1 thread with a maximum engagement of 15 mm to avoid mechanical interference. For field wiring, use 0.2 to 1.5 mm² (16 to 24 AWG) three-conductor shielded triad cable with tinned ends. The maximum cable length between the probe and the 3300 XL Proximitor Sensor is 305 meters (1,000 feet). Set the initial gap to approximately -9 Vdc (1.27 mm) for radial vibration measurements. Proper installation reduces rework costs and extends sensor life.

Maintenance & Reliability

Inspect the probe cable and connector periodically for wear or damage, especially in high-vibration environments. The probe is designed to seal differential pressure between tip and case using a Viton® O-ring; avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature seal failure. The PPS tip resists chemical attack, reducing replacement frequency. Regular calibration checks against the nominal DC resistance (7.45 ± 0.50 Ω) help maintain measurement accuracy and avoid unplanned downtime.

Compatibility & Integration

This probe is part of the Bently Nevada 3300 XL series and is compatible with 3300 XL Proximitor Sensors. The miniature coaxial ClickLoc connector simplifies installation and replacement, lowering labor costs. When used with intrinsically safe zener barriers (per drawing 141092) or galvanic isolators, it meets Class I, Zone 0 requirements. For non-incendive installations (per drawing 140979), it meets Class I, Zone 2. This flexibility allows use in diverse plant areas without additional hardware investments.

Selection Guide & Purchasing Advice

When selecting a replacement or new probe, verify that the total length (0.5 meter) and connector type (ClickLoc) match your existing system. The 330103-00-03-05-12-CN includes country-specific approval (CN), ensuring compliance with local regulations. For cost-effective procurement, contact AutoDCSTech to confirm availability and lifecycle status. Their expertise helps you avoid long lead times and unexpected expenses.