Product Introduction – Critical Machinery Monitoring
When unplanned downtime strikes rotating machinery, the Bently Nevada 330172-00-28-10-01-05 provides the precise displacement measurements essential for early fault detection. This 5mm proximity probe, part of the 3300 series, features a 1/4-28 UNF thread and integral armor for demanding environments. Built in the USA, it delivers reliable performance for vibration and position monitoring in compressors, turbines, and pumps.
Technical Specifications Breakdown
The Bently Nevada 330172-00-28-10-01-05 operates with a power supply of -17.5 Vdc to -26 Vdc at 12 mA maximum consumption. Its output resistance is 50 W, and the probe DC resistance for the 1.0 meter cable is 7.59 ± 0.50 Ω. The probe tip material is polyphenylene sulfide (PPS), while the case uses AISI 304 stainless steel. The maximum thread engagement length is 0.375 inches. Key environmental limits include a temperature range of -35°C to +177°C, with a warning that exposure below -34°C may cause premature seal failure.
Failure Mode Analysis – Avoiding Common Pitfalls
The Bently Nevada 330172-00-28-10-01-05 helps prevent two frequent failure modes in proximity probes. First, operating at a voltage more positive than -23.5 Vdc reduces linear range – the probe's design ensures stable sensitivity (less than 2 mV change per volt change in input). Second, magnetic fields up to 300 Gauss at 60 Hz can induce noise; this probe's shielded construction minimizes output voltage interference, as shown in the 5-meter system data (e.g., 0.0004 mil pp/gauss at 10 mil gap for the probe).
Application Scenarios – Real-World Use Cases
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Steam Turbine Shaft Vibration: The 330172-00-28-10-01-05 mounts in a 1/4-28 tapped hole to monitor radial vibration, with its 2.8-inch overall case length fitting standard bearing housings.
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Centrifugal Compressor Axial Position: Using the 1.0 meter cable and ClickLoc connector, this probe integrates with Bently Nevada monitoring systems for thrust position feedback.
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Hydroelectric Generator Clearance: Its multiple approvals (Agency Approval Option 05) suit safety-critical applications, while the PPS tip resists oil and moisture.
Installation & Setup Guidance
When mounting the 330172-00-28-10-01-05, drill and tap a hole for the 1/4-28 thread using a #3 or larger tap drill. The maximum thread engagement is 0.375 inches – do not exceed this to avoid case stress. Apply a recommended probe case torque of 5.1 N·m (45 in·lb), with a maximum of 7.3 N·m (65 in·lb). The connector-to-connector torque should be limited to 0.565 N·m (0.42 ft·lbf). Maintain a minimum cable bend radius of 25.4 mm (1.0 inch) to protect the FEP insulated triaxial cable.
Maintenance & Reliability
Regularly inspect the probe cable and connector for damage, especially in high-temperature areas. The temperature schedule for EPL Ga and Gc classifications indicates the probe can operate from -55°C to +232°C (T1) down to -55°C to +40°C (T5). Avoid exposure below -34°C to preserve the pressure seal. The probe's tensile strength of 222 N (50 lbf) on both case-to-lead and lead-to-extension cable connectors ensures robust mechanical reliability.
Selection Guide & Purchasing Advice
Before purchasing the Bently Nevada 330172-00-28-10-01-05, confirm your system's cable length requirement (this unit has 1.0 meter total length) and connector type (Miniature coaxial ClickLoc with connector protector). For assured authenticity and rapid delivery, choose PLC Source PRO as your supplier for this genuine Bently Nevada module.