330171-00-32-05-01-05 Bently Nevada 5mm Probe 1/4-28 | 0.5m

Product Overview

The Bently Nevada 330171-00-32-05-01-05 is a 3300 series 5mm proximity probe engineered for precise displacement and vibration measurement in industrial turbomachinery. As part of the trusted 3300 platform, this probe delivers engineering-grade precision for critical condition monitoring applications. The 1/4-28 UNF thread ensures secure mounting, while the 0.5-meter total length and miniature coaxial ClickLoc connector facilitate straightforward integration into existing systems.

Key Features & Technical Specifications

• Probe Type: 3300 5mm probe, 1/4-28 UNF thread, without armor.
• Total Length: 0.5 meter (1.6 feet) for compact installations.
• Connector: Miniature coaxial ClickLoc with protector, standard cable.
• Materials: PPS tip and AISI 304 stainless steel case for durability.
• Weight: 0.323 kg, minimizing load on mounting structures.
• Temperature Range: -35°C to +177°C (-31°F to +351°F).
• Input Voltage: Requires -17.5 Vdc to -26 Vdc at 12 mA maximum.
• Output Resistance: 50 Ω for reliable signal transmission.
• Probe DC Resistance: 7.45 ± 0.50 Ω at 0.5 m.
• Agency Approvals: Multiple approvals for global deployment.

These verified specifications ensure exact compatibility with your measurement requirements.

Applications and Use Cases

This probe excels in monitoring radial and axial displacement on steam turbines, compressors, and pumps. Because of its 5mm tip and high-temperature tolerance, it suits harsh environments where reliability is paramount. Additionally, the 1/4-28 thread allows direct replacement in many existing installations. For oil and gas applications, the multiple approvals support use in hazardous areas. Consequently, engineers specify this probe for critical machinery protection systems.

Installation and Setup

When mounting, drill and tap a 1/4-28 hole using a #3 or larger tap drill. Then, engage the thread no more than 0.375 inches to avoid damage. Also, observe a minimum cable bend radius of 25.4 mm (1.0 in). Tighten the probe case to 5.1 N·m (45 in·lb) recommended, with a maximum of 7.3 N·m (65 in·lb). Finally, connect the ClickLoc connector securely to the extension cable.

Maintenance and Reliability

Periodically inspect the probe tip for wear or contamination. Since the PPS tip resists chemicals, clean only with a soft cloth if needed. Moreover, verify cable integrity and connector torque regularly. The stainless steel case withstands corrosion, but avoid temperatures below -34°C to prevent seal failure. With proper care, this probe delivers long-term, engineering-grade precision.