Bently Nevada 330104-01-06-05-01-05 3300 XL 8 mm Proximity Probe

Solving Vibration Monitoring Challenges in Harsh Environments

When rotating machinery operates in extreme temperatures or hazardous areas, standard proximity probes often fail to deliver reliable data. The Bently Nevada 330104-01-06-05-01-05 3300 XL 8 mm Proximity Probe addresses this challenge directly. Designed for metric applications, this probe provides accurate shaft vibration and position measurements even in demanding conditions. With a polyphenylene sulfide (PPS) tip and AISI 303 or 304 stainless steel case, it withstands corrosive environments and wide temperature ranges.

Technical Specifications Breakdown

Probe Configuration

The 330104-01-06-05-01-05 features a 10 mm unthreaded length and a 60 mm overall case length. Its M10x1 thread allows secure mounting with a maximum thread engagement of 15 mm. The total length option is 0.5 meter (1.6 feet), and the connector is a miniature coaxial ClickLoc with a connector protector and standard cable.

Electrical Performance

The probe offers a linear range of 2 mm (80 mils), 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 ohms for the 0.5 m length.

Environmental Durability

Standard probes operate from -52°C to +177°C (-62°F to +350°F). An extended temperature range version supports -52°C to +218°C (-62°F to +425°F) for the tip and -51°C to +260°C (-60°F to +500°F) for the cable and connector. The probe maintains less than a 3% change in Average Scale Factor (ASF) when tested at 93% humidity per IEC 68-2-3 for up to 56 days.

Industry Applications

Steam Turbine Monitoring

In power generation, steam turbines require precise shaft vibration monitoring to prevent catastrophic failures. The 330104-01-06-05-01-05 provides reliable data in high-temperature environments up to 177°C, helping operators schedule maintenance before issues escalate.

Compressor Protection

Centrifugal compressors in oil and gas facilities often operate in hazardous zones. With CSA, ATEX, and IECEx approvals, this probe is suitable for Class I, Zone 0 installations when used with intrinsic safety barriers. Its rugged stainless steel case resists corrosion from process gases.

Installation & Setup Guidance

Proper installation ensures optimal performance. Use 3-conductor shielded triad cable with tinned field wiring, sized from 0.2 to 1.5 mm² (16 to 24 AWG). The maximum field wiring length between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). Mount the probe with the M10x1 thread, ensuring thread engagement does not exceed 15 mm. Set the gap to -9 Vdc for radial vibration applications.

Maintenance & Reliability

The 3300 XL probe design includes a Viton O-ring to seal differential pressure between the tip and case. While probes are not pressure tested before shipment, regular inspection of the seal integrity is recommended. Avoid exposing the probe to temperatures below -34°C (-30°F), as this may cause premature failure of the pressure seal. For extended life, consider the extended temperature range probe option for applications above 177°C.

Compatibility & Integration

The 330104-01-06-05-01-05 integrates seamlessly with Bently Nevada 3300 XL Proximitor Sensors and monitoring systems. When installed with intrinsically safe zener barriers per drawing 141092 or with galvanic isolators, it meets Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga requirements. For non-incendive circuits per drawing 140979, it meets Class I, Zone 2: AEx/Ex nA IIC T5…T1 Gc and Class I, Division 2 requirements.

Selection Guide & Purchasing Advice

Before ordering, verify your application requirements: probe length, thread type, temperature range, and hazardous area classification. The 330104-01-06-05-01-05 is a metric version with M10x1 thread and 0.5 m cable. For different lengths or imperial threads, consult the 3300 XL series options. plcmatrix.com stocks this probe and can confirm availability and lifecycle status. Contact our team to ensure the correct configuration for your machinery monitoring needs.