330102-00-40-05-01-05 Bently Nevada 330102 3300 XL 8 mm Probe

Precision 8 mm eddy current sensing technology

The Bently Nevada 330102-00-40-05-01-05 uses the proven 3300 XL platform for accurate displacement measurements. This 8 mm proximity probe offers a linear range of 2 mm (80 mils). It operates from 0.25 mm to 2.3 mm from the target surface. This corresponds to a -1 to -17 Vdc output change. The recommended gap setting for radial vibration is -9 Vdc (approximately 1.27 mm or 50 mils).

Mechanical construction and materials

This 330102-00-40-05-01-05 probe features a Polyphenylene sulfide (PPS) tip for durability. The probe case uses AISI 303 or 304 stainless steel for corrosion resistance. It has a 3/8-24 UNF mounting thread with a maximum engagement of 0.563 inches. The probe weight is 323 g/m (11.4 oz). The 0.5-meter armored cable includes a miniature coaxial ClickLoc connector with a connector protector.

Environmental and operating limits

This 3300 XL 8 mm probe operates in a wide temperature range from -52°C to +177°C (-62°F to +350°F). The probe tip can withstand extended temperatures up to +218°C. The probe cable and connector handle up to +260°C. Exposing the probe below -34°C may cause premature failure of the pressure seal. It maintains less than 3% ASF change after 56 days at 93% humidity per IEC 68-2-3. The Viton O-ring seals differential pressure between the tip and case. Probes are not pressure tested prior to shipment.

Hazardous area certifications

The 330102-00-40-05-01-05 carries CSA, ATEX, and IECEx approvals for global use. It suits Zone 0 installations with intrinsic safety barriers (Class I, Groups A-D). For Zone 2, use non-incendive wiring per drawing 140979. Temperature classifications range from T5 (40°C ambient) to T1 (232°C ambient) depending on the EPL rating. For EPL Dc, specific temperature classifications apply from T280°C to T90°C.

Electrical characteristics and wiring

The probe has a nominal DC resistance of 7.45 ± 0.50 Ω for the 0.5 meter length (measured center to outer conductor). Use 0.2 to 1.5 mm² (16-24 AWG) field wiring. A 3-conductor shielded triad cable with tinned wiring is recommended. You can run up to 305 meters (1000 feet) between the 3300 XL Proximitor and monitor. See frequency response graphs for signal rolloff at high frequencies with longer wiring lengths.

Installation guidelines

Set the initial gap to -9 Vdc (approximately 1.27 mm or 50 mils) for radial vibration applications. The 330102-00-40-05-01-05 requires a target material compatible with eddy current sensing. Ensure thread engagement does not exceed 0.563 inches to avoid mechanical damage. This 0.5-meter probe works exclusively with the 5-meter Proximitor sensor. The 3-meter length option is only available on 330101 probes for use with 9-meter Proximitors.

Packaging and shipping information

Each order includes one Bently Nevada 330102-00-40-05-01-05 probe with attached armored cable and ClickLoc connector. We ship all orders via FedEx, UPS, or DHL express services. The package contains the probe only. Mounting hardware and Proximitor sensor are sold separately.

Frequently asked questions

What is the difference between 330101 and 330102 probes?
The 330101 probes offer a 3-meter cable option for use with 9-meter Proximitors. The 330102-00-40-05-01-05 has a 0.5-meter cable and requires a 5-meter Proximitor sensor. Always match cable lengths for proper system calibration.

Can I use this probe in high-pressure applications?
The probe seals differential pressure with a Viton O-ring. Bently Nevada does not pressure-test units before shipping. Contact their custom design department if you require a test of the pressure seal for your specific application.

How do I choose between standard and extended temperature ranges?
Standard probes work from -52°C to +177°C. Choose the extended range only if your tip temperature exceeds 177°C but stays below 218°C. The extended range allows the probe cable and connector to handle up to +260°C.

What approvals does this specific model include?
The 05 option in the model number means it includes CSA, ATEX, and IECEx approvals. This makes the 330102-00-40-05-01-05 suitable for international hazardous area installations without needing additional certifications.

What is the maximum field wiring length?
You can run up to 305 meters (1000 feet) between the 3300 XL Proximitor and the monitor. Use 0.2 to 1.5 mm² (16-24 AWG) 3-conductor shielded triad cable with tinned wiring for best results.

What is the probe tip material and why does it matter?
The probe tip uses Polyphenylene sulfide (PPS). This material provides excellent durability and consistent performance across the operating temperature range. It resists chemicals and maintains dimensional stability.