330171-00-08-10-02-CN Bently Nevada 3300 5mm Probe 1m

Product Overview: Bently Nevada 330171-00-08-10-02-CN

The Bently Nevada 330171-00-08-10-02-CN is a 5mm proximity probe from the 3300 series, engineered for exact displacement and vibration measurement in rotating machinery. This probe features a 1/4-28 UNF thread and a 1.0 metre (3.3 ft) total length, making it suitable for installations with limited space. Its polyphenylene sulfide (PPS) tip and AISI 304 stainless steel case ensure durability in harsh industrial environments. The miniature coaxial ClickLoc connector provides a secure, reliable connection. With a weight of 0.323 kg, this probe is lightweight yet robust. The CN agency approval option indicates country-specific compliance, ensuring suitability for regional requirements. This probe is designed for use with Bently Nevada 3300 series proximitor systems, delivering engineering-grade precision in condition monitoring.

Key Features & Technical Specifications

• Input Voltage: Requires -17.5 Vdc to -26 Vdc at 12 mA maximum consumption.
• 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.
• Probe Tip Material: Polyphenylene sulfide (PPS) for chemical resistance.
• Probe Case Material: AISI 304 stainless steel for corrosion resistance.
• Connector: Miniature coaxial ClickLoc, standard cable.
• Total Length: 1.0 metre (3.3 feet).
• Weight: 0.323 kg.
• Temperature Range: -35°C to +177°C (-31°F to +351°F).
• Thread: 1/4-28 UNF, maximum engagement 0.375 in.
• Tensile Strength: 222 N (50 lbf) probe case to lead.

Comparison with Similar Probes

When selecting a proximity probe, engineers compare key parameters. The 330171-00-08-10-02-CN offers a 5mm tip diameter and 1/4-28 thread, common in the 3300 series. Unlike probes with armored cables, this model is without armor, reducing weight and cost. Its 1.0m length is shorter than the 2m or 5m options, ideal for compact installations. The ClickLoc connector provides a secure interface, while other models may use different connectors. The PPS tip and stainless steel case match the durability of higher-end probes. For applications requiring extended temperature ranges, this probe supports up to +177°C, suitable for many industrial environments. However, for extreme temperatures, alternative models may be needed. The CN approval ensures compliance for specific regions, which may not be available in all probes.

Applications and Use Cases

The 330171-00-08-10-02-CN excels in monitoring shaft vibration, axial displacement, and radial position on steam turbines, compressors, and pumps. In power generation, it detects rotor eccentricity and bearing wear. For oil and gas, it monitors critical compressor shafts to prevent unplanned downtime. Additionally, in heavy industry, it provides precise measurements for condition-based maintenance programs. Its 1/4-28 thread allows direct mounting into bearing housings or brackets. The 1.0m cable length suits installations where the proximitor is mounted nearby. The probe's wide temperature range ensures reliable operation in varying climates.

Installation and Maintenance

Install the probe using a 1/4-28 UNF threaded hole. A #3 or larger tap drill is recommended for drilling and tapping. 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 connector-to-connector torque, refer to the manufacturer's table. Maintain a minimum cable bend radius of 25.4 mm (1.0 in) to avoid damage. Periodically inspect the probe tip for wear or contamination, and verify cable integrity. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature seal failure. Regular calibration checks ensure measurement accuracy. For specific maintenance procedures, consult the official Bently Nevada documentation.