Bently Nevada 330104-01-17-05-01-CN 3300 XL 8 mm Proximity Probe

What Is the Bently Nevada 330104-01-17-05-01-CN?

When critical machinery vibration threatens production uptime, the Bently Nevada 330104-01-17-05-01-CN provides precise, reliable measurement. This 3300 XL 8 mm proximity probe is designed for continuous monitoring of shaft displacement and vibration in rotating equipment such as turbines, compressors, and pumps. Built with a polyphenylene sulfide (PPS) tip and AISI 303 or 304 stainless steel case, it withstands harsh industrial environments.

Technical Specifications Breakdown

Linear Range: 2 mm (80 mils), beginning at approximately 0.25 mm (10 mils) from the target, spanning 0.25 to 2.3 mm (10 to 90 mils). This corresponds to roughly –1 to –17 Vdc output.

Recommended Gap Setting for Radial Vibration: –9 Vdc, approximately 1.27 mm (50 mils).

Probe DC Resistance: 7.45 ± 0.50 Ω at 0.5 m length, measured from center conductor to outer conductor.

Temperature Range: Standard probe operates from –52°C to +177°C (–62°F to +350°F). Extended range versions handle up to +218°C at the tip and +260°C at the cable.

Relative Humidity: Less than 3% change in Average Scale Factor (ASF) after 56 days at 93% humidity per IEC 68-2-3.

Industry Applications

Rotating Machinery Protection

In power generation and petrochemical plants, the 330104-01-17-05-01-CN mounts directly into bearing housings to measure radial vibration. Its 2 mm linear range and –9 Vdc gap setting ensure accurate readings even under high-speed rotation. The M10x1 thread and 15 mm maximum thread engagement simplify installation into standard ports.

Compressor Monitoring

For reciprocating or centrifugal compressors, this probe detects shaft orbit and clearance changes. The robust stainless steel case and PPS tip resist oil, moisture, and temperature extremes from –52°C to +177°C. Field wiring supports 0.2 to 1.5 mm² (16 to 24 AWG) conductors, with maximum cable run of 305 meters (1000 feet) to the Proximitor sensor.

Installation & Setup Guidance

Mount the probe using the M10x1 thread, ensuring engagement does not exceed 15 mm. Connect field wiring with a 3-conductor shielded triad cable, tinned ends, and secure the miniature coaxial ClickLoc connector with connector protector. Set the initial gap to achieve –9 Vdc output for radial vibration monitoring. Verify the probe resistance is 7.45 ± 0.50 Ω before powering the system. For extended temperature applications, confirm the cable and connector are rated for the environment.

Maintenance & Reliability

Inspect the probe tip and cable periodically for wear or contamination. The PPS tip resists chemical attack, but avoid exposure to temperatures below –34°C (–30°F) to prevent pressure seal failure. The probe is designed to seal differential pressure between tip and case using a Viton® O-ring; however, it is not pressure tested before shipment. If pressure testing is required, contact the custom design department. Regular calibration checks ensure the linear range and gap setting remain within specification.

Compatibility & Integration

This probe works with the 3300 XL Proximitor sensor and compatible Bently Nevada monitoring systems. It supports intrinsically safe installations when used with approved zener barriers (drawing 141092) or galvanic isolators, achieving Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga. For non-incendive circuits (drawing 140979), it meets Class I, Zone 2: AEx/Ex nA IIC T5…T1 Gc. The 0.5 meter (1.6 feet) cable with standard miniature coaxial ClickLoc connector ensures straightforward connection.

Selection Guide & Purchasing Advice

Before ordering the 330104-01-17-05-01-CN, verify the unthreaded length (10 mm), overall case length (170 mm), and total length (0.5 meter). Confirm the agency approval option (CN for country-specific requirements). For replacement or new installations, ensure compatibility with existing Proximitor sensors and monitor modules. plcmatrix.com stocks this exact model and can advise on lifecycle status and availability. Contact our team for assistance with matching the correct probe configuration to your application.