Bently Nevada 330104-10-20-05-02-00 3300 XL 8 mm Proximity Probe

Product Overview

When unplanned downtime threatens your rotating machinery, the Bently Nevada 330104-10-20-05-02-00 3300 XL 8 mm proximity probe delivers the precise, reliable measurements you need. This metric probe, part of the trusted 3300 XL series, is engineered for continuous vibration and position monitoring in demanding industrial environments. With a polyphenylene sulfide (PPS) tip and AISI 303 or 304 stainless steel case, it withstands harsh conditions while providing consistent performance.

Technical Specifications

The 330104-10-20-05-02-00 offers a 2 mm (80 mils) linear range, starting at approximately 0.25 mm (10 mils) from the target. The recommended gap setting for radial vibration is -9 Vdc, corresponding to about 1.27 mm (50 mils). Nominal probe DC resistance (RPROBE) is 7.45 ± 0.50 Ω for the 0.5 m length. Operating and storage temperature range for the standard probe is -52°C to +177°C (-62°F to +350°F). The probe case thread is M10x1 with a maximum thread engagement of 15 mm. Probe weight is 323 g/m (11.4 oz).

Industry Applications

This proximity probe excels in critical machinery protection for turbines, compressors, pumps, and motors. In a steam turbine train, the 330104-10-20-05-02-00 provides real-time shaft vibration data, enabling early detection of imbalance or misalignment. Its robust design minimizes false readings, reducing maintenance costs and extending equipment life. For centrifugal compressors, the probe’s linear range and stable output support reliable monitoring even in high-temperature zones.

Installation & Setup Guidance

Proper installation ensures optimal performance. The probe is designed for forward mounting with a recommended case torque of 11.2 N·m (100 in·lbf) and a maximum of 33.9 N·m (300 in·lbf). Use 0.2 to 1.5 mm² (16 to 24 AWG) field wiring with a 3-conductor shielded triad cable. Maximum field wiring length between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). Follow the frequency response graphs for signal rolloff at high frequencies with longer cables.

Maintenance & Reliability

Routine inspection of the probe tip and cable for physical damage helps maintain measurement accuracy. The PPS tip resists chemical attack, while the stainless steel case provides corrosion resistance. Exposing the probe to temperatures below -34°C (-30°F) may cause premature pressure seal failure, so avoid such conditions. The probe’s relative humidity performance shows less than 3% change in Average Scale Factor (ASF) when tested per IEC 68-2-3 at 93% humidity for up to 56 days.

Compatibility & Integration

The 330104-10-20-05-02-00 integrates seamlessly with Bently Nevada 3300 XL Proximitor Sensors and monitoring systems. When installed with intrinsically safe zener barriers per drawing 141092 or with galvanic isolators, it meets hazardous area approvals: 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 circuits per drawing 140979, it qualifies for Class I, Zone 2: AEx/Ex nA IIC T5…T1 Gc and Class 1, Division 2, Groups A, B, C, D.

Selection Guide & Purchasing Advice

Before ordering, verify your required probe length, cable type, and agency approvals. The 330104-10-20-05-02-00 includes a 0.5 meter (1.6 feet) cable with a miniature coaxial ClickLoc connector. For custom pressure testing or extended temperature range options, contact your supplier. plcmatrix.com offers this probe along with expert support to ensure you select the right configuration for your application. Please verify current lifecycle status and availability with plcmatrix.com before ordering.