Product Overview
The Bently Nevada 330195-02-12-90-CN is a 3300 XL 8 mm proximity probe designed for reverse mount applications. Manufactured in the USA, this probe features a 3/8-24 UNF thread and a total length of 9.0 meters (29.5 feet). The 330195-02-12-90-CN includes a Viton® O-ring for differential pressure sealing between the probe tip and case, making it suitable for harsh industrial environments. The probe tip is made of polyphenylene sulfide (PPS) and the case from AISI 303 or 304 stainless steel.
Technical Specifications
| Parameter |
Value |
| Model |
330195-02-12-90-CN |
| Probe Type |
3300 XL 8 mm, Reverse Mount |
| Thread |
3/8-24 UNF |
| Total Length |
9.0 meters (29.5 feet) |
| Agency Approval |
CN Country Specific |
| Nominal DC Resistance (RPROBE) |
9.87 ± 0.50 Ω at 9.0 m |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel |
| Max Thread Engagement |
0.563 in (3/8-24 thread) |
| Humidity Effect |
< 3% change in ASF at 93% RH per IEC 68-2-3 |
| Standard Temperature Range |
-52°C to +177°C (-62°F to +350°F) |
| Extended Temperature Range |
-52°C to +218°C (tip); -51°C to +260°C (cable) |
Industry Applications
The Bently Nevada 330195-02-12-90-CN is ideal for vibration monitoring in rotating machinery such as turbines, compressors, and pumps. In high-temperature environments up to 218°C for the probe tip, this model maintains accuracy. Its reverse mount design simplifies installation in confined spaces. The sealed construction minimizes failure due to moisture ingress, addressing common failure modes in proximity probes.
Maintenance & Reliability
To ensure long service life, inspect the Viton® O-ring during each maintenance cycle. Avoid exposing the 330195-02-12-90-CN to temperatures below -34°C (-30°F) as this may compromise the pressure seal. The probe's DC resistance should be checked periodically; a deviation beyond ±0.50 Ω indicates potential damage. With proper care, this Bently Nevada 330195-02-12-90-CN probe provides reliable performance in demanding conditions.
Troubleshooting & Common Issues
If the probe exhibits erratic readings, verify the cable is not damaged and the connector is secure. The 330195-02-12-90-CN is designed for differential pressure sealing; if the seal fails, replace the O-ring. Humidity above 93% can slightly affect the scale factor, but the probe is tested per IEC standards. For extended temperature range operation, ensure the cable does not exceed 260°C. Always use the correct thread engagement (0.563 in max) to avoid mechanical stress.
Selection Guide
When ordering the Bently Nevada 330195-02-12-90-CN, verify your system's thread requirement (3/8-24 UNF) and cable length (9.0 m). The reverse mount configuration is suitable for applications where standard front mounting is impractical. For assistance with custom pressure testing or other specifications, contact PLC Source PRO. We stock genuine Bently Nevada parts to ensure your operations remain uninterrupted.