Bently Nevada 330104-16-21-10-01-05 3300 XL 8 mm Proximity Probe Buyer's Guide

Product Overview

When machinery vibration threatens uptime, the Bently Nevada 330104-16-21-10-01-05 3300 XL 8 mm proximity probe delivers accurate, reliable measurements. This metric probe features a polyphenylene sulfide (PPS) tip and AISI 303 or 304 stainless steel case, designed for harsh industrial environments. With a nominal DC resistance of 7.59 ± 0.50 ohms at 1.0 meter length, it ensures consistent performance for critical asset protection.

Key Specifications

The 330104-16-21-10-01-05 offers a linear range of 2 mm (80 mils), starting at approximately 0.25 mm (10 mils) from the target. Recommended gap setting for radial vibration is -9 Vdc, approximately 1.27 mm (50 mils). Operating temperature range spans -52°C to +177°C (-62°F to +350°F) for the standard probe, with extended range options available for the tip and cable. The probe withstands 93% humidity with less than 3% change in Average Scale Factor (ASF) per IEC 68-2-3 for up to 56 days.

Industry Applications

In rotating machinery such as turbines, compressors, and pumps, the 330104-16-21-10-01-05 provides precise shaft vibration and position monitoring. Its robust construction and agency approvals (CSA, ATEX, IECEx) make it suitable for hazardous areas including Class I, Zone 0 and Class I, Division 2 environments when installed with appropriate barriers or isolators. The probe's differential pressure seal, using a Viton O-ring, supports reliable operation in demanding process conditions.

Installation Guidance

Field wiring requires 0.2 to 1.5 mm² (16 to 24 AWG) conductor, preferably a 3-conductor shielded triad cable with tinned ends. Maximum cable length between the 3300 XL Proximitor Sensor and monitor is 305 meters (1,000 feet). For radial vibration applications, set the gap to -9 Vdc (approximately 1.27 mm or 50 mils). Ensure thread engagement does not exceed 15 mm for the M10x1 thread. The probe weighs 323 g/m (11.4 oz).

Maintenance and Reliability

Regular inspection of the probe tip and cable for physical damage is recommended. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature pressure seal failure. For hazardous area installations, follow the manufacturer's safety manual for periodic verification of intrinsic safety barriers or galvanic isolators. The probe's stainless steel case resists corrosion in most industrial environments.

Compatibility and Integration

The 330104-16-21-10-01-05 integrates seamlessly 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 requirements. For non-incendive circuits per drawing 140979, it suits Class I, Zone 2: AEx/Ex nA IIC T5…T1 Gc. Always verify compatibility with your existing system before ordering.

Purchasing Advice

Before purchasing the 330104-16-21-10-01-05, confirm your required cable length, thread type, and agency approvals. This model includes a 1.0 meter (3.3 feet) cable with miniature coaxial ClickLoc connector and connector protector. For current availability and lifecycle status, contact plcmatrix.com. As a trusted supplier of industrial automation components, plcmatrix.com offers new, surplus, and obsolete parts from leading brands including Bently Nevada.