31000-00-00-00-031-01-02 | Bently Nevada 3.1 in Probe Housing

Introduction to the Bently Nevada 31000-00-00-00-031-01-02

When you need a robust housing for your proximity probe system, the 31000-00-00-00-031-01-02 from Bently Nevada delivers dependable performance. This 31000 series housing is engineered for industrial environments where reliability is non-negotiable. It is designed to protect the probe assembly while maintaining accurate measurements.

This housing model features a 3.1-inch probe penetration option, making it suitable for installations requiring a specific insertion depth. The housing is constructed from glass-reinforced Polyphenylene Sulfide (PPS) thermoplastic with conductive fibers, ensuring both strength and electrostatic dissipation. With a temperature rating of -51°C to +105°C, it operates effectively in extreme conditions.

Key Features and Technical Specifications

• Probe Penetration: 3.1 inches (option 031).
• Mounting Thread: 3/4-14 NPT (option 02).
• Fittings: One 3/4-14 NPT fitting and two plugs (option 01).
• Housing Material: Glass-reinforced PPS thermoplastic with conductive fibers.
• Sleeve Material: AISI 304 stainless steel; outer sleeve and screws in 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.

One distinctive spec is the housing impact strength. Certified by BASEEFA to withstand two separate 4 Joule impacts at -39°C and 115°C, and verified by CSA to withstand a 7 Joule impact at room temperature. This ensures the housing can endure physical shocks without compromising the probe inside.

Applications and Use Cases

This housing is ideal for machinery protection in industries such as oil and gas, power generation, and manufacturing. It is used with proximity probes to monitor shaft vibration and position in rotating equipment like turbines, compressors, and pumps. The robust construction and environmental ratings make it suitable for harsh outdoor and hazardous areas.

For example, in a refinery, the housing’s Type 4X and IP66 ratings protect against water ingress and corrosion, ensuring continuous operation in wet or dusty environments. Its conductive material also meets CENELEC standards for electrostatic dissipation, which is critical in explosive atmospheres.

Installation and Setup Guidance

When installing the 31000-00-00-00-031-01-02, ensure the mounting thread (3/4-14 NPT) is properly engaged. The recommended torque for the retaining nut is 29.4 N·m (260 in·lb). Use the included one 3/4-14 NPT fitting and two plugs to seal unused openings. Verify that the probe penetration depth matches the 3.1-inch specification for accurate measurement.

Because the housing is made of plastic with conductive fibers, handle it carefully to avoid damaging the surface. Always follow the manufacturer’s installation manual for detailed steps.

Maintenance and Reliability

Regular inspection is key to long-term reliability. Check the O-ring for wear and replace it if damaged to maintain the IP66 seal. Periodically verify that all screws and fittings are tight, and inspect the housing for cracks or impact damage. The stainless steel sleeves resist corrosion, but cleaning with a mild detergent and water is acceptable—avoid harsh solvents that could degrade the PPS material.

By following a simple maintenance routine, you can extend the service life of the housing and avoid unexpected downtime.

Compatibility and Integration

This housing is part of the Bently Nevada 31000 series, designed to work with Bently Nevada proximity probes. It is compatible with standard 3/4-14 NPT mounting configurations. For integration with monitoring systems, consult the Bently Nevada documentation to ensure proper probe selection and cable routing.

Troubleshooting Common Issues

If you experience signal instability, check the probe penetration depth—it must be exactly 3.1 inches. Verify that the mounting thread is clean and properly seated. If the housing is exposed to extreme temperatures, ensure it remains within the -51°C to +105°C range. For persistent issues, contact Petro Auto Tech for technical support.

Frequently Asked Questions

Q: What is the probe penetration option for this housing?

A: The probe penetration option is 031, which equals 3.1 inches.

Q: What mounting thread does this housing use?

A: It uses a 3/4-14 NPT thread (option 02).

Q: Is the housing suitable for hazardous areas?

A: Yes, it meets CENELEC standard EN50014 for electrostatic dissipation of plastic materials in hazardous areas.

Q: What is the temperature rating?

A: The housing is rated for -51°C to +105°C (-60°F to +221°F).

Q: What is the weight of the housing?

A: The typical weight is 1.2 kg (2.6 lb).

Product Support and Availability

The 31000-00-00-00-031-01-02 is available from Petro Auto Tech. Contact our team for current availability and lead times. We are here to help you select the right housing for your application.