Product Overview
In rotating machinery monitoring, reliable vibration measurement is critical to prevent unplanned downtime. The Bently Nevada 3300 XL 8 mm Proximity Probe, metric (part number 330103-00-03-20-02-00) provides accurate displacement sensing for turbines, compressors, and pumps. This non-contact probe detects shaft vibration and position with high linearity, making it a trusted choice for industrial asset protection.

Technical Specifications Breakdown
Key parameters for the 330103-00-03-20-02-00 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Product Type | 3300 XL 8 mm Proximity Probes, Metric |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Probe Case Material | AISI 303 or 304 stainless steel (SST) |
| Probe Case Thread | M10 x 1 |
| Unthreaded Length | 00 mm |
| Overall Case Length | 30 mm |
| Total Length | 2.0 meters (6.6 feet) |
| Connector Type | Miniature coaxial ClickLoc connector, standard cable |
| Probe DC Resistance (RPROBE) | 7.88 ± 0.50 Ω (at 2.0 m) |
| Linear Range | 2 mm (80 mils), from 0.25 to 2.3 mm (10 to 90 mils) |
| Recommended Gap Setting (Radial Vibration) | -9 Vdc [approximately 1.27 mm (50 mils)] |
| Operating Temperature (Standard Probe) | -52°C to +177°C (-62°F to +350°F) |
| Extended Temperature Range (Tip) | -52°C to +218°C (-62°F to +425°F) |
| Extended Temperature Range (Cable) | -51°C to +260°C (-60°F to +500°F) |
| Relative Humidity | Less than 3% change in ASF at 93% humidity per IEC 68 2 3 |
| Probe Weight | 323 g/m (11.4 oz) |
Industry Applications
The PPS tip and stainless steel case withstand harsh conditions, while the 2.0 mm linear range accommodates typical radial vibration measurements. The -52°C to +177°C operating range suits both cold climate startups and hot process areas.

Installation & Setup Guidance
When installing the 3300 XL 8 mm probe, ensure the target surface is clean and within the linear range (0.25 to 2.3 mm). Use the recommended gap setting of -9 Vdc (approximately 1.27 mm) for radial vibration. Field wiring should use 0.2 to 1.5 mm² (16 to 24 AWG) three-conductor shielded triad cable. Maximum cable length between the probe and monitor is 305 meters (1,000 feet). For high-frequency applications, consult the frequency response graphs to avoid signal roll-off.
Maintenance & Reliability
Inspect the probe cable and connector periodically for damage, especially in high-vibration or high-temperature areas. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature pressure seal failure. The probe sealing material (Viton O-ring) is designed for differential pressure sealing but is not pressure tested before shipment. Contact AutoDCSTech for custom pressure testing if required.
Compatibility & Integration
This probe is part of the Bently Nevada 3300 XL series and is compatible with 3300 XL Proximitor sensors and monitors. For intrinsically safe installations, use zener barriers per drawing 141092 or galvanic isolators. For non-incendive installations, follow drawing 140979. The probe carries Class I, Zone 0 and Zone 2 approvals as specified.
Selection Guide & Purchasing Advice
When selecting a replacement or new probe, verify the total length and connector type. The 330103-00-03-20-02-00 features a 2.0 meter cable with a Miniature coaxial ClickLoc connector. For extended temperature applications, ensure the probe tip and cable rating match your environment. AutoDCSTech stocks genuine Bently Nevada parts and can assist with lifecycle status. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Comparison with Similar Products
Compared to standard 5 mm or 11 mm probes, the 8 mm size offers a balance of linear range (2 mm) and physical robustness. The M10 x 1 thread is common for metric mounting. The PPS tip provides better chemical resistance than some older materials. The ClickLoc connector simplifies installation compared to threaded connectors. Always match the probe length and connector to your existing system.
Availability & Condition at AutoDCSTech
| Part Number | 330103-00-03-20-02-00 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
