Bently Nevada 330102-03-20-10-02-05 3300 XL 8 mm Proximity Probe

Product Overview

The 330102-03-20-10-02-05 is a 3300 XL 8 mm proximity probe from Bently Nevada, designed for non-contact displacement measurement. It features a 3/8-24 UNF thread with armor, a 0.3-inch unthreaded length, and a 2.0-inch overall case length. The total length is 1.0 meter (3.3 feet), terminated with a miniature coaxial ClickLoc connector and standard cable. Agency approvals include CSA, ATEX, and IECEx, making it suitable for hazardous area installations.

Technical Specifications Breakdown

Key parameters for the 330102-03-20-10-02-05 are listed below for quick reference:

Industry Applications

Its 2 mm linear range and recommended -9 Vdc gap setting ensure accurate measurement of shaft displacement. The PPS tip withstands harsh environments, while the stainless steel case resists corrosion in chemical plants. With ATEX and IECEx approvals, it can be deployed in explosive atmospheres, such as gas compressor stations.

Installation & Setup Guidance

Install the probe with the 3/8-24 UNF thread into a mounting hole, ensuring thread engagement does not exceed 0.563 inches. Use three-conductor shielded triad cable for field wiring, with conductor sizes from 0.2 to 1.5 mm² (16 to 24 AWG). The maximum field wiring length between the Proximitor Sensor and monitor is 305 meters (1,000 feet). Set the initial gap to approximately -9 Vdc for radial vibration measurements. Always follow the manufacturer's drawing for intrinsic safety barriers if used in hazardous areas.

Maintenance & Reliability

Inspect the probe cable and connector periodically for damage. The probe operates reliably in temperatures from -52°C to +177°C (standard) or up to +218°C for the tip (extended range). Avoid exposing the probe to temperatures below -34°C to prevent pressure seal failure. The probe withstands 93% humidity with less than 3% change in Average Scale Factor. No disassembly is required for routine checks.

The Evolution of Precision Monitoring

Industrial machinery has evolved from reactive maintenance to predictive protection. The Bently Nevada 330102-03-20-10-02-05 3300 XL 8 mm Proximity Probe represents this shift, offering engineers a reliable tool for measuring shaft vibration and position in critical rotating equipment. With its robust design and global safety certifications, this probe helps prevent unplanned downtime in power generation, oil and gas, and heavy process industries.

Compatibility & Integration

The 330102-03-20-10-02-05 works with Bently Nevada 3300 XL Proximitor Sensors and monitoring systems. It supports intrinsic safety barriers per drawing 141092 for Class I, Zone 0 installations, or non-incendive circuits per drawing 140979 for Zone 2. The nominal DC resistance is 7.59 ± 0.50 ohms for the 1.0-meter probe length.

Selection Guide & Purchasing Advice

When selecting a proximity probe, verify the thread size, cable length, and approvals match your application. The 330102-03-20-10-02-05 is a versatile choice for most industrial vibration monitoring needs. For current lifecycle status and availability, contact AutoDCSTech.