31000-00-00-00-082-03-02 | Bently Nevada 8.2 in Proximity Probe Housing

Introduction to the Bently Nevada 31000-00-00-00-082-03-02

When your rotating machinery demands reliable vibration monitoring, the 31000-00-00-00-082-03-02 from Bently Nevada provides a robust housing solution. This 31000 series proximity probe housing is engineered to protect sensitive 8 mm probes in demanding industrial environments. With a glass-reinforced PPS thermoplastic body and stainless steel components, it offers durability without compromising performance.

As a professional in the field, you need components that withstand harsh conditions. This housing delivers exactly that, with a temperature rating from -51°C to +105°C (-60°F to +221°F). Its Type 4X and IP66 ratings ensure protection against water and dust ingress, making it suitable for outdoor and washdown applications.

Key Features and Technical Specifications

• Probe Penetration Option: 082 = 8.2 inches – accommodates longer probe installations.
• Fittings Option: 03 = Two plugs, one 3/4-14 NPT fitting, one 3/4-14 to 1/2-14 NPT SST reducer, and a cable seal grip with grommets for cable sizes 1/8 to 3/16, 1/4 to 5/16, and 5/16 to 3/8 inches.
• Mounting Thread Option: 02 = 3/4-14 NPT (required if ordering standoff adapter).
• Housing Material: Glass-reinforced Polyphenylene Sulfide (PPS) thermoplastic with conductive fibers for electrostatic dissipation.
• Sleeve Material and Retaining Chain: AISI 304 stainless steel.
• Outer Sleeve and Exterior Screws: AISI 303 stainless steel.
• O-Ring Material: Neoprene®.
• Temperature Rating: -51°C to +105°C (-60°F to +221°F).
• Weight: 1.2 kg (2.6 lb) typical.

The housing's impact strength is certified by BASEEFA to withstand two separate 4 Joule impacts at -39°C and 115°C, and CSA verified 7 Joule impact at ambient temperature. This ensures reliable operation even in physically demanding environments.

Applications and Use Cases

In petrochemical plants, the 31000-00-00-00-082-03-02 protects vibration probes on pumps and compressors, where exposure to moisture and chemicals is common. Its IP66 rating allows for hose-down cleaning, which is essential in food processing and pharmaceutical facilities. Additionally, the NEMA 4X rating makes it ideal for outdoor installations, such as wind turbines and offshore platforms, where corrosion resistance is critical.

Because the housing is designed to seal differential pressure between the probe tip and the main body when used with a 3300 XL 8 mm probe, it ensures accurate readings even in pressurized environments. However, it is not intended for high internal or external pressure applications, so consult the manual for pressure limits.

Installation and Mounting Considerations

Proper installation is key to maximizing the performance of the 31000-00-00-00-082-03-02. The mounting thread option 02 (3/4-14 NPT) is required if you plan to use a standoff adapter. Ensure the cable seal grip is correctly sized for your cable diameter, using the provided grommets for 1/8 to 3/16, 1/4 to 5/16, or 5/16 to 3/8 inches.

When tightening the retaining nut, apply the recommended torque of 29.4 N·m (260 in·lb) to achieve a proper seal without damaging the O-ring. Always verify that the probe and cable are not required (options 00) if you are using this housing without them, as indicated by the part number.

Maintenance and Reliability

Routine inspection of the housing is straightforward. Check the O-ring for wear and replace it if necessary to maintain the IP66 seal. The stainless steel sleeve and screws resist corrosion, but periodic cleaning with a mild detergent is recommended to remove contaminants.

The housing's impact strength and temperature range contribute to long service life, reducing downtime and replacement costs. By choosing the 31000-00-00-00-082-03-02, you invest in a component that will perform reliably for years, even in the most challenging conditions.

Compatibility and Integration

This housing is designed for use with Bently Nevada 3300 XL 8 mm proximity probes. It is part of the 31000 series, which includes various options for probe, cable, and fittings. Ensure that your existing system uses compatible probes and that the mounting thread matches your installation requirements.

For integration with your monitoring system, the housing provides a secure connection point for the probe cable, protecting it from environmental damage. The conductive PPS material also helps dissipate electrostatic charges, which is critical in hazardous areas.

Common Questions About the 31000-00-00-00-082-03-02

Q: What is the temperature range for this housing?

A: The housing operates from -51°C to +105°C (-60°F to +221°F), making it suitable for extreme environments.

Q: Is the housing rated for outdoor use?

A: Yes, it has a Type 4X rating (CSA certified) and IP66 rating, ensuring protection against water and dust.

Q: Can I use this housing with any 8 mm probe?

A: It is designed for use with Bently Nevada 3300 XL 8 mm probes. Other probes may not fit or seal properly.

Q: What is the recommended torque for the retaining nut?

A: The recommended torque is 29.4 N·m (260 in·lb) to ensure a proper seal.

Q: Does the housing come with a probe and cable?

A: No, the part number indicates probe and cable are not required (options 00). You must order them separately if needed.

Availability and Support

The 31000-00-00-00-082-03-02 is available through Petro Auto Tech. Contact our team to confirm current stock and lead times. We are here to help you select the right components for your machinery monitoring needs.