31000-28-05-20-110-00-02 | Bently Nevada 8 mm Proximity Probe Housing

Introduction to the 31000-28-05-20-110-00-02

When a rotating machine fails unexpectedly, the cost of downtime can be immense. The 31000-28-05-20-110-00-02 from Bently Nevada helps prevent such failures by providing a robust housing for a 3300 XL 8 mm proximity probe. This housing is engineered to protect the probe in demanding industrial settings, ensuring accurate vibration and position measurements.

Part of the trusted 31000 series, this housing assembly is designed for use with the 3300 XL 8 mm probe. It seals the differential pressure between the probe tip and the housing main body, maintaining measurement integrity. The housing is built to withstand harsh conditions, making it a reliable choice for critical machinery monitoring.

Key Features and Technical Specifications

The 31000-28-05-20-110-00-02 is packed with features that enhance durability and performance. Here are the key specifications:

• Probe Option: 3300 XL 8 mm probe with connector, multiple approvals
• Probe Cable Length: 0.5 inches
• Standoff Adapter: 2.0 inches
• Probe Penetration: 11 inches
• Mounting Thread: 3/4-14 NPT (required with standoff adapter)
• Housing Material: Glass-reinforced Polyphenylene Sulfide (PPS) thermoplastic with conductive fibers
• Sleeve Material: AISI 304 stainless steel
• Outer Sleeve and 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)

One standout feature is the housing's impact strength. Certified by BASEEFA to withstand two separate 4 Joule impacts at extreme temperatures, and verified by CSA to handle a 7 Joule impact at room temperature, this housing offers exceptional protection for the probe inside.

Applications and Use Cases

This housing is ideal for turbomachinery, pumps, compressors, and other rotating equipment where vibration monitoring is critical. In a typical scenario, the housing is mounted on a machine casing, and the 3300 XL 8 mm probe measures shaft vibration or position. The robust construction ensures reliable operation even in washdown environments, thanks to its NEMA 4X and IP66 ratings.

For example, in a chemical plant, the housing's resistance to hose-directed water and its stainless steel components make it suitable for areas with frequent cleaning. The housing's ability to seal against moisture helps maintain measurement accuracy, reducing the risk of false alarms and unplanned shutdowns.

Installation and Setup

Proper installation is crucial for optimal performance. The 31000-28-05-20-110-00-02 features a 3/4-14 NPT mounting thread, which is required when using the standoff adapter. The recommended torque for the retaining nut is 29.4 N·m (260 in·lb). Ensure the housing is securely fastened and the probe is correctly positioned for accurate readings.

When installing, verify that the probe cable length (0.5 inches) and standoff adapter (2.0 inches) match your application requirements. The probe penetration of 11 inches should be set according to the machine's dimensions. Always follow the manufacturer's guidelines for probe installation and clearance.

Maintenance and Reliability

Regular inspection of the housing and probe is essential to maintain reliable operation. Check the O-rings for wear and replace them if damaged. The stainless steel sleeves and screws resist corrosion, but periodic cleaning may be needed in dirty environments. The housing is designed to withstand impacts, but avoid excessive force during maintenance.

By following a routine maintenance schedule, you can extend the service life of the housing and probe, reducing long-term costs. The durable materials and robust construction contribute to high reliability, minimizing unexpected failures.

Compatibility and Integration

The 31000-28-05-20-110-00-02 is specifically designed for use with the Bently Nevada 3300 XL 8 mm probe. It is part of the 31000 series of proximity probe housings, ensuring seamless integration with Bently Nevada monitoring systems. The housing's design allows for easy mounting and connection to standard probe cables.

For applications requiring multiple probes, this housing can be used in arrays to monitor several points on a machine. Its compact design and robust construction make it a versatile choice for various industrial setups.

Frequently Asked Questions

Q: What is the temperature rating of the 31000-28-05-20-110-00-02?

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

Q: Is the housing suitable for outdoor use?

A: Yes, the housing has a NEMA 4X rating and IP66 protection, so it can withstand hose-directed water and dust ingress.

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 secure fit.

Q: Can I use this housing with other probes?

A: This housing is designed specifically for the 3300 XL 8 mm probe. For other probes, please consult Bently Nevada or Petro Auto Tech.

Product Support and Availability

The Bently Nevada 31000-28-05-20-110-00-02 is available through Petro Auto Tech. As a leading supplier of industrial automation parts, Petro Auto Tech ensures genuine products and reliable delivery. Contact us for pricing and availability.