Bently Nevada 330102-20-73-05-02-CN 3300 XL 8mm Proximity Probe

Product Overview

From a maintenance engineer's perspective, the Bently Nevada 330102-20-73-05-02-CN 3300 XL 8 mm Proximity Probe offers reliable, accurate vibration and position monitoring for critical rotating machinery. Designed for harsh industrial environments, this probe features a Polyphenylene sulfide (PPS) tip and a stainless steel case (AISI 303 or 304 SST). The 330102-20-73-05-02-CN is built to withstand extreme temperatures and humidity, ensuring long-term stability and reduced downtime.

Technical Specifications Breakdown

Key parameters for the 330102-20-73-05-02-CN are listed below for quick reference:

Industry Applications

Its 2 mm linear range and -9 Vdc recommended gap setting provide precise measurements for predictive maintenance. The 330102-20-73-05-02-CN is especially suited for applications requiring high temperature tolerance (up to +177°C standard) and humidity resistance, reducing the risk of false readings and unplanned outages.

Installation & Setup Guidance

When installing the 330102-20-73-05-02-CN, ensure the probe tip is clean and the target surface is smooth. Use 3-conductor shielded triad cable with tinned field wiring (16 to 24 AWG). The maximum field wiring length between the probe and the monitor is 305 meters (1,000 feet). For radial vibration, set the gap to approximately -9 Vdc (1.27 mm). Verify the probe case thread engagement does not exceed 0.563 in for 3/8-24 threads. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature pressure seal failure.

Maintenance & Reliability

Inspect the probe and cable periodically for physical damage or wear. The probe is designed to seal differential pressure between the tip and case using a Viton O-ring. Although not pressure tested before shipment, the seal integrity should be verified in critical applications. The probe's PPS tip and stainless steel case resist corrosion and mechanical stress, contributing to long service life. Monitor the DC resistance (RPROBE) of 7.45 ± 0.50 ohms for the 0.5 m probe length as a diagnostic check.

Compatibility & Integration

The 330102-20-73-05-02-CN is compatible 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 installations 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; and Class I, Zone 2: AEx/Ex ec IIC T5...T1 Gc. Always verify compatibility with your specific monitor and barrier.

Selection Guide & Purchasing Advice

When selecting a replacement or spare probe, confirm the part number 330102-20-73-05-02-CN matches your required unthreaded length (2 in), overall case length (7.3 in), total length (0.5 m), connector type (miniature coaxial ClickLoc), and agency approval (CN). AutoDCSTech offers this Bently Nevada probe with fast shipping and expert support. Please verify current lifecycle status and availability with AutoDCSTech before ordering.