330103-10-20-05-02-CN 3300 XL 8mm Proximity Probe

Precision 8mm Proximity Probe for Critical Machinery

The Bently Nevada 330103-10-20-05-02-CN belongs to the trusted 3300 XL series. We design this 8mm probe for accurate displacement and vibration measurements. It operates within a 2mm (80 mils) linear range, starting at 0.25 mm from the target. For radial vibration monitoring, we recommend a gap setting of -9 Vdc, which equals approximately 1.27 mm. This sensor provides reliable data for protecting turbines, compressors, and other rotating equipment.

Key Technical Specifications

• Manufacturer: Bently Nevada. Model: 330103-10-20-05-02-CN.
• Product Type: 3300 XL 8 mm Proximity Probe with M10 x 1 thread, no armor.
• Dimensions: Unthreaded length of 100mm, overall case length of 200mm, and a 0.5 meter (1.6 feet) total length.
• Connector: Miniature coaxial ClickLoc connector with standard cable for secure field wiring.
• Material: Probe tip uses Polyphenylene sulfide (PPS). Probe case uses AISI 303 or 304 stainless steel.
• DC Resistance: Nominal probe resistance (RPROBE) measures 7.45 ± 0.50 Ω.
• Weight: Probe weighs 323 g/m (11.4 oz/ft).

Environmental and Operating Ranges

• Temperature (Standard): Operates and stores from -52°C to +177°C (-62°F to +350°F).
• Temperature (Extended): Probe tip reaches -52°C to +218°C (-62°F to +425°F). Cable and connector handle up to +260°C.
• Humidity: Average Scale Factor changes less than 3% after 56 days in 93% humidity (IEC 68-2-3).
• Pressure Seal: Uses a Viton® O-ring to seal differential pressure between tip and case. Not pressure tested before shipment.

Installation and Mounting Guide

• Thread Engagement: Maximum thread engagement length is 15 mm for the M10x1 case thread.
• Torque (Forward Mount): Recommended torque is 11.2 N•m (100 in•lbf). Maximum rated torque is 33.9 N•m.
• Torque (First Three Threads): Use recommended torque of 7.5 N•m (66 in•lbf). Do not exceed 22.6 N•m.
• Field Wiring: Use 0.2 to 1.5 mm² (16-24 AWG) wire. Maximum extension cable length between proximitor and monitor is 305 meters (1,000 feet).
• Temperature Note: Exposing the probe to temperatures below -34°C (-30°F) may cause early pressure seal failure.

Package Includes

• One Bently Nevada 330103-10-20-05-02-CN 3300 XL 8 mm Probe.
• Factory-attached miniature coaxial ClickLoc connector and 0.5m standard cable.
• Mounting instructions and product documentation (available upon request).
• Shipping: We ship via FedEx, UPS, or DHL for fast global delivery.

Frequently Asked Questions (FAQ)

What makes the 330103-10-20-05-02-CN different from other 8mm probes?

This specific 330103-10-20-05-02-CN model includes the ClickLoc connector for quick, secure cable attachment. Its 0.5m total length and country-specific certification (CN) match many retrofit applications. The PPS tip and stainless steel case offer excellent durability in harsh environments.

Can I use this probe with my existing 3300 XL monitoring system?

Yes. The 3300 XL 8 mm Proximity Probe fully integrates with Bently Nevada 3300 XL proximitors and monitors. It maintains the same linear range and output characteristics. Always verify your system compatibility, especially for hazardous area approvals.

What is the recommended gap for vibration measurement?

We suggest setting the initial gap to -9 Vdc. This corresponds to approximately 1.27 mm (50 mils) from the target. This point centers the probe within its linear range, allowing maximum travel for both inward and outward shaft motion.

How do I select the right probe length for my machine?

Measure the distance from the mounting surface to the target, then add clearance for cables and connectors. The 330103-10-20-05-02-CN offers a 0.5m total length, suitable for compact installations. For longer runs, choose a different total length option or use extension cables up to 305 meters.

Does the probe require special handling in high-temperature areas?

Check your operating temperature against the probe ratings. The standard probe works up to +177°C. If you exceed this, consider the extended temperature range version. Remember that the probe tip and cable have different limits, so ensure both meet your needs.