What Is the 330171-00-08-10-02-00?
The Bently Nevada 330171-00-08-10-02-00 is a precision 3300 5mm proximity probe designed for non-contact vibration and displacement measurement in critical rotating machinery. Manufactured in the U.S.A., this probe features a 1/4-28 UNF thread, a polyphenylene sulfide (PPS) tip, and a 1.0 meter cable, making it a reliable choice for industrial automation applications. With its rugged AISI 304 stainless steel case and gold-plated connectors, the 330171-00-08-10-02-00 ensures long-term stability in harsh environments.
Technical Specifications
| Parameter |
Value |
| Power Supply |
-17.5 Vdc to -26 Vdc at 12 mA maximum |
| Supply Sensitivity |
Less than 2 mV change per volt change in input |
| Output Resistance |
50 W |
| Probe DC Resistance (1.0m cable) |
7.59 Ω ± 0.50 |
| Probe Temperature Range |
-35°C to +177°C |
| Connector Type |
Miniature coaxial ClickLoc (standard cable) |
| Probe Case Material |
AISI 304 stainless steel |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Maximum Thread Engagement |
0.375 in |
| Weight |
0.323 kg |
Real-World Applications
The Bently Nevada 330171-00-08-10-02-00 is ideal for monitoring shaft vibration and eccentricity in turbines, compressors, pumps, and other rotating equipment. Its high sensitivity (less than 2 mV change per volt) enables early detection of bearing wear or imbalance, preventing unplanned downtime. For example, in a steam turbine, this probe can measure radial vibration with a gap setting of 1.27 mm (50 mils) using a -24 Vdc supply, delivering reliable data for predictive maintenance programs.
Installation and Mounting
When installing the 330171-00-08-10-02-00, drill and tap a mounting hole for the 1/4-28 thread using a #3 or larger tap drill. Ensure the maximum thread engagement does not exceed 0.375 inches. Apply a recommended torque of 5.1 N·m (45 in·lb) to the probe case, with a maximum of 7.3 N·m (65 in·lb). For the connector-to-connector joint, use a maximum torque of 0.565 N·m (0.42 ft·lbf). Maintain a minimum cable bend radius of 25.4 mm (1.0 in) to avoid damage.
Maintenance and Longevity
To maximize the life of the Bently Nevada 330171-00-08-10-02-00, avoid exposing the probe to temperatures below -34°C (-30°F), as this may cause premature failure of the pressure seal. Regularly inspect the probe cable for wear and ensure the gold-plated connectors remain clean and corrosion-free. The 75 Ω triaxial FEP-insulated cable is designed for durability, but periodic torque checks on the connector joints help maintain consistent signal integrity.
Troubleshooting Common Issues
If output voltage drifts, verify that the power supply remains between -17.5 Vdc and -26 Vdc; operation above -23.5 Vdc may reduce linear range. Check for magnetic field interference: at 60 Hz fields up to 300 Gauss, the probe output may vary (e.g., 0.0004 mV pp/Gauss at 10 mil gap). Ensure the target surface is clean and made of AISI 4140 steel for calibrated performance. For erratic readings, measure probe DC resistance from center conductor to outer conductor; it should be 7.59 Ω ± 0.50 for a 1.0m cable.