31000-28-05-00-109-01-02 | Bently Nevada 8 mm Probe Housing

Introduction to the Bently Nevada 31000-28-05-00-109-01-02

When reliable vibration monitoring is critical, the 31000-28-05-00-109-01-02 from Bently Nevada provides a durable housing solution for 3300 XL 8 mm proximity probes. This model is part of the 31000 series, designed to protect sensitive probe components in demanding industrial environments.

With a glass-reinforced PPS thermoplastic housing containing conductive fibers, this enclosure offers both mechanical strength and electrostatic dissipation. The unit is built to withstand harsh conditions, making it suitable for rotating machinery monitoring in various sectors.

Key Features and Technical Specifications

The 31000-28-05-00-109-01-02 includes several options that tailor it to specific installation needs:

• Probe Option: 3300 XL 8 mm probe with multiple approvals (option 28).
• Cable Length: 0.5 metre (20 inches) probe cable (option 05).
• Standoff Adapter: None included (option 00).
• Probe Penetration: 10.9 inches (option 109).
• Fittings: One 3/4-14 NPT fitting and two plugs (option 01).
• Mounting Thread: 3/4-14 NPT (option 02).

Protection ratings are impressive: Type 4X certified by CSA, IP66 verified, and CENELEC EN50014 rated for electrostatic dissipation in hazardous areas. The housing withstands 4 Joule impacts at -39°C and 115°C, plus a 7 Joule impact at room temperature.

Durable Construction and Materials

Every component of the 31000-28-05-00-109-01-02 is selected for longevity. The sleeve and retaining chain use AISI 304 stainless steel, while the outer sleeve and exterior screws are AISI 303 stainless steel. The O-ring is made of Neoprene®, ensuring a reliable seal.

Operating temperature range spans -51°C to +105°C (-60°F to +221°F), covering extreme conditions found in many industrial settings. The unit weighs 1.2 kg (2.6 lb), providing a solid yet manageable footprint.

Applications and Use Cases

This housing is ideal for protecting proximity probes on turbines, compressors, pumps, and other rotating equipment. In petrochemical plants, the Type 4X and IP66 ratings ensure protection against water jets and corrosive agents. Similarly, in power generation facilities, the wide temperature tolerance supports reliable operation in both hot and cold climates.

For example, a maintenance team can mount the 31000-28-05-00-109-01-02 on a large motor to monitor shaft vibration continuously. The robust construction minimizes downtime caused by sensor damage, contributing to overall plant efficiency.

Installation and Setup Guidance

Proper installation is key to achieving accurate measurements. The 3/4-14 NPT mounting thread allows secure attachment to standard ports. When tightening the retaining nut, apply the recommended torque of 29.4 N·m (260 in·lb) to avoid over-stressing the housing.

Ensure the probe cable is routed without sharp bends, and verify that the probe penetration depth (10.9 inches) matches the machine's dimensions. Always follow the manufacturer's guidelines for positioning the probe relative to the target surface.

Maintenance and Reliability Tips

Routine inspection of the 31000-28-05-00-109-01-02 helps maintain long-term performance. Check the O-ring for signs of wear or cracking, and confirm that all screws remain tight. Periodically verify the housing's integrity, especially after any impact or exposure to extreme temperatures.

Because the housing is rated for electrostatic dissipation, avoid painting or coating it unless approved by Bently Nevada. Keeping the unit clean and free of debris ensures the probe operates without interference.

Compatibility and Integration

The 31000-28-05-00-109-01-02 is designed to work with Bently Nevada 3300 XL 8 mm proximity probes. It integrates seamlessly with monitoring systems that accept standard proximity probe signals. The multiple approvals on the probe option (28) indicate broad compatibility with various safety and certification requirements.

For existing installations, this housing can replace older units, provided the mounting thread and probe penetration match. Always verify compatibility with your current probe and system before ordering.

Common Questions About the 31000-28-05-00-109-01-02

Q: What is the temperature range for this housing?

A: The 31000-28-05-00-109-01-02 operates from -51°C to +105°C (-60°F to +221°F).

Q: Does this model include a standoff adapter?

A: No, the standoff adapter option is 00, meaning none is included.

Q: What mounting thread size does it use?

A: The mounting thread is 3/4-14 NPT, which is required for ordering a standoff adapter.

Q: What is the probe cable length?

A: The probe cable length is 0.5 metre (20 inches).

Q: Is the housing impact-resistant?

A: Yes, it withstands 4 Joule impacts at extreme temperatures and 7 Joule at room temperature.

Product Support and Availability

The 31000-28-05-00-109-01-02 is available through Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. Our team can assist with technical questions and ensure you receive the correct part for your application.