31000-16-05-35-026-03-02 | Bently Nevada 8mm Probe Housing

Introduction to the Bently Nevada 31000-16-05-35-026-03-02

In rotating machinery monitoring, the integrity of the sensing element is critical. The 31000-16-05-35-026-03-02 from Bently Nevada is a robust proximity probe housing engineered to safeguard 3300 XL 8 mm probes in demanding applications. This housing is part of the 31000 series, designed for reliable performance in harsh environments.

With a temperature rating of -51°C to +105°C (-60°F to +221°F), this housing withstands extreme conditions. Its construction uses glass-reinforced Polyphenylene Sulfide (PPS) thermoplastic with conductive fibers, ensuring durability and electrostatic dissipation. The housing meets Type 4X and IP66 protection ratings, making it suitable for washdown and outdoor installations.

Key Features and Technical Specifications

• Probe Compatibility: Designed for 3300 XL 8 mm probe with connector option 16.
• Cable Length: 0.5 m (20 in) probe cable length option 05.
• Standoff Adapter: 3.5 in standoff adapter option 35.
• Probe Penetration: 2.6 in probe penetration option 026.
• Fittings: Two plugs, one 3/4-14 NPT fitting, one 3/4-14 to 1/2-14 NPT SST reducer, and cable seal grip for various cable sizes.
• Mounting Thread: 3/4-14 NPT (option 02), required with standoff adapter.
• Housing Material: Glass-reinforced PPS thermoplastic with conductive fibers.
• Sleeve Material: AISI 304 stainless steel for sleeve and retaining chain; AISI 303 for outer sleeve and screws.
• 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 is certified to withstand two separate 4 Joule impacts at -39°C and 115°C, and a 7 Joule impact at ambient temperature. This ensures resilience against mechanical shocks.

Applications and Use Cases

The 31000-16-05-35-026-03-02 is ideal for vibration monitoring in turbines, compressors, and pumps. Its robust design prevents probe damage from environmental factors, reducing downtime. For example, in a petrochemical plant, this housing protects probes from moisture and corrosive agents, ensuring accurate readings.

Moreover, the Type 4X and IP66 ratings allow installation in washdown areas, while the conductive PPS material dissipates static electricity, enhancing safety in hazardous locations.

Installation and Setup

Proper installation is essential for optimal performance. The housing features a 3/4-14 NPT mounting thread, which must be used with the standoff adapter. The fittings option includes a cable seal grip accommodating cables from 1/8 to 3/8 inches, ensuring a secure seal.

During setup, verify that the probe penetration is 2.6 in and the standoff adapter is 3.5 in to maintain correct gap settings. The recommended torque for the retaining nut is 29.4 N·m (260 in·lb). Always follow the manufacturer's installation manual for precise steps.

Maintenance and Reliability

Regular inspection of the housing and seals helps maintain its protective integrity. Check the O-rings and fittings periodically for wear or damage. The stainless steel components resist corrosion, extending service life.

Because the housing is not designed to resist internal or external pressure, avoid pressurizing the assembly. If pressure testing is required, contact Bently Nevada's custom design department. Routine maintenance ensures long-term reliability and accurate monitoring.

Compatibility and Integration

The 31000-16-05-35-026-03-02 is specifically designed for Bently Nevada 3300 XL 8 mm probes. It integrates seamlessly with Bently Nevada monitoring systems, providing consistent signal integrity. The housing's mounting options allow retrofitting into existing installations.

For other probe types, consult Bently Nevada documentation to confirm compatibility. The housing's standard NPT threads facilitate easy integration with common industrial piping.

Troubleshooting and Common Issues

If the housing shows signs of water ingress, inspect the cable seal grip and O-rings. Ensure the fittings are tightened to the recommended torque. If signal interference occurs, verify that the grounding liner is installed correctly.

For persistent issues, refer to the Bently Nevada manual or contact Petro Auto Tech for technical support. Regular checks prevent minor issues from escalating.

FAQ about 31000-16-05-35-026-03-02

Q: What is the temperature rating of this housing?

A: The housing operates from -51°C to +105°C (-60°F to +221°F).

Q: Which probe is compatible with this housing?

A: It is designed for the Bently Nevada 3300 XL 8 mm probe.

Q: What mounting thread does it use?

A: It uses a 3/4-14 NPT thread, required with the standoff adapter.

Q: Is the housing pressure-rated?

A: No, it is not designed to resist internal or external pressure.

Q: What protection ratings does it have?

A: It has Type 4X and IP66 ratings, plus CENELEC EN50014 for electrostatic dissipation.

Product Support and Availability

The 31000-16-05-35-026-03-02 is available from Petro Auto Tech. Contact our team for pricing and lead times. We offer fast shipping and reliable customer service.