330172-00-08-05-02-CN Bently Nevada 5mm Probe 1/4-28

Product Overview: Bently Nevada 330172-00-08-05-02-CN

The Bently Nevada 330172-00-08-05-02-CN is a 5mm proximity probe engineered for exact displacement and vibration measurement in rotating machinery. As part of the 3300 series, this probe features a 1/4-28 UNF thread and a 0.5-meter armored cable with a miniature coaxial ClickLoc connector. Its construction includes a polyphenylene sulfide (PPS) tip and an AISI 304 stainless steel case, ensuring durability in industrial environments. The probe operates with a -24 Vdc power supply and provides a 50 Ω output resistance, delivering reliable signals for condition monitoring systems.

Key Specifications and Performance

Understanding the electrical and mechanical parameters is critical for proper integration. The following table summarizes the verified specifications for the 330172-00-08-05-02-CN.

These specifications ensure the probe meets the demands of harsh industrial applications. The input voltage range is particularly important for compatibility with Bently Nevada proximitor systems.

Installation and Integration

Proper installation is essential for accurate measurements. The 1/4-28 UNF thread requires a mounting hole drilled with a #3 or larger tap drill. The maximum thread engagement is 0.375 inches, and the recommended probe case torque is 5.1 N·m (45 in·lb), with a maximum of 7.3 N·m (65 in·lb). The miniature coaxial ClickLoc connector provides a secure connection to extension cables. When routing the cable, maintain a minimum bend radius of 25.4 mm (1.0 in) to prevent damage. The probe operates with a -24 Vdc power supply and a 10 kΩ load, as specified in the standard test conditions.

Applications and Use Cases

This probe is ideal for monitoring vibration and axial displacement in turbines, compressors, and pumps. Its armored cable protects against mechanical damage in high-vibration areas. The 5mm probe tip is suitable for measuring small targets where space is limited. With a temperature range up to +177°C, it can be used in high-temperature sections of industrial machinery. The 330172-00-08-05-02-CN integrates seamlessly with Bently Nevada 3300 series monitors and proximitors.

Maintenance and Reliability

Regular inspection of the probe tip and cable is recommended to ensure continued accuracy. Check for wear on the PPS tip and damage to the stainless steel case. The connector should be kept clean and dry. Operating within the specified temperature range prevents premature failure of the pressure seal. For detailed maintenance procedures, consult the manufacturer's documentation.