Bently Nevada 330104-08-11-10-02-CN 3300 XL 8 mm Proximity Probe Metric

Product Overview

When machinery vibration threatens uptime, the Bently Nevada 330104-08-11-10-02-CN provides reliable measurement. This 3300 XL 8 mm proximity probe is designed for radial vibration and position monitoring in rotating equipment. Its metric M10x1 thread and armored construction suit harsh industrial environments. By delivering precise gap voltage readings, it helps prevent costly unplanned downtime.

Technical Specifications

The 330104-08-11-10-02-CN offers a linear range of 2 mm (80 mils), beginning at approximately 0.25 mm (10 mils) from the target. The recommended gap setting for radial vibration is -9 Vdc, corresponding to roughly 1.27 mm (50 mils). Nominal probe DC resistance is 7.59 ± 0.50 ohms at 1.0 meter length. This consistent electrical performance ensures accurate signal transmission to the monitor, reducing the risk of false trips and maintenance costs.

Industry Applications

In steam turbines, compressors, and large pumps, the 330104-08-11-10-02-CN continuously measures shaft vibration and position. Early detection of abnormal vibration allows operators to schedule repairs during planned outages, avoiding expensive emergency shutdowns. The probe's wide temperature range — from -52°C to +177°C for standard models — supports use in high-heat areas near bearings and casings. This reliability translates into longer equipment life and lower total cost of ownership.

Installation & Setup Guidance

Proper installation maximizes probe performance. Use 0.2 to 1.5 mm² (16 to 24 AWG) field wiring, preferably three-conductor shielded triad cable with tinned ends. Maximum cable length between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). For radial vibration, set the initial gap to -9 Vdc. The probe case thread is M10x1 with a maximum thread engagement of 15 mm. Correct mounting ensures stable readings and reduces recalibration frequency, saving labor costs.

Maintenance & Reliability

The probe tip material is polyphenylene sulfide (PPS), and the case is AISI 303 or 304 stainless steel. These materials resist corrosion and wear in demanding environments. The probe sealing material includes a Viton O-ring to maintain differential pressure between tip and case. Although probes are not pressure tested before shipment, routine inspection of the cable and connector for damage helps maintain accuracy. Regular verification of the gap voltage against baseline readings can detect drift early, preventing measurement errors that lead to equipment damage.

Buying Guide & Purchasing Advice

Before ordering, confirm the required unthreaded length (08 = 80 mm), overall case length (11 = 110 mm), total length (10 = 1.0 meter), and connector type (02 = miniature coaxial ClickLoc). The agency approval option CN indicates country-specific certification. For current availability and lifecycle status, verify with plcmatrix.com. As a trusted supplier of industrial automation components, plcmatrix.com can help you source this probe and any compatible accessories.