330171-00-16-10-01-05 Bently Nevada 3300 5mm Probe

Problem: Unreliable Shaft Vibration Data in Turbomachinery

Inaccurate radial vibration measurements lead to false trips and unplanned downtime. The Bently Nevada 330171-00-16-10-01-05 solves this with a 5 mm probe tip and precise 1/4-28 UNF mounting. This probe is part of the 3300 series, engineered for continuous shaft displacement monitoring.

Solution: 330171-00-16-10-01-05 Key Specifications

• Input Voltage: Requires -17.5 Vdc to -26 Vdc at 12 mA maximum.
• Output Resistance: 50 Ω for stable signal transmission.
• Isolation: Not specified; refer to official datasheet.
• Probe DC Resistance: 7.59 ± 0.50 Ω from center to outer conductor.
• Total Length: 1.0 metre (3.3 feet) with 0 in unthreaded length.
• Case Length: 1.6 in overall.
• Connector: Miniature coaxial ClickLoc with protector.
• Weight: 0.323 Kg.

Each probe undergoes engineering-grade verification to ensure exact electrical performance.

Problem: Harsh Industrial Environments Degrade Probe Integrity

Chemical exposure and extreme temperatures cause premature probe failure. The 330171-00-16-10-01-05 uses a polyphenylene sulfide (PPS) tip and AISI 304 stainless steel case. Consequently, it withstands -35°C to +177°C. The FEP-insulated triaxial cable resists abrasion and moisture.

Solution: Reliable Mounting and Connection

Thread engagement is limited to 0.375 in maximum. Therefore, use a #3 or larger tap drill when preparing the mounting hole. The recommended probe case torque is 5.1 N·m (45 in·lb), with a maximum of 7.3 N·m (65 in·lb). Additionally, the minimum cable bend radius is 25.4 mm (1.0 in) to prevent conductor damage.

Problem: Signal Degradation from Electromagnetic Interference

60 Hz magnetic fields up to 300 Gauss can induce errors. However, this probe limits output voltage to 0.0004 mil pp/gauss at a 10 mil gap. For a 5 meter system, the XL Proximitor Sensor contributes 0.0119 mil pp/gauss. Consequently, the probe maintains signal integrity in electrically noisy plants.

Solution: Applications and Integration

Use this probe for radial vibration and axial position measurement on steam turbines, compressors, and pumps. It integrates with Bently Nevada 3300 XL Proximitor sensors and extension cables. When wiring into fieldbus networks, an external gateway or connection module may be required. Confirm cables and gateways with AutoDCSTech.

Problem: Incorrect Installation Causes False Readings

Improper gap or torque leads to inaccurate data. Therefore, gap the probe at 1.27 mm (50 mils) for standard calibration. Verify the -24 Vdc power supply and 10 kΩ load. For temperatures below -34°C (-30°F), the pressure seal may fail prematurely. Always follow the manufacturer's safety manual.

Solution: Maintenance and Support

Inspect the probe tip and cable periodically for wear or chemical attack. Replace if the DC resistance deviates from 7.59 ± 0.50 Ω. AutoDCSTech provides specialist engineering support for precise matching. Contact AutoDCSTech with your exact requirements.