31000-27-05-00-035-03-02 | Bently Nevada 0.5m Cable Proximity Probe Housing

Introduction to the 31000-27-05-00-035-03-02

When machinery reliability depends on precise vibration measurement, the 31000-27-05-00-035-03-02 from Bently Nevada provides a robust housing solution. This 31000 Proximity Probe Housing is designed to protect and position a 3300 XL NSv probe, ensuring accurate rotor vibration and position monitoring in critical rotating equipment.

Engineered for harsh industrial environments, this housing combines durable materials with a thoughtful design. It is built to withstand demanding conditions while maintaining the integrity of the proximity probe system.

Key Features and Technical Specifications

The 31000-27-05-00-035-03-02 is defined by several key specifications that ensure its performance and reliability.

• Probe Option: 3300 XL NSv probe with multiple approvals.
• Probe Cable Length: 0.5 m (20 in).
• Probe Penetration: 3.5 inches.
• Mounting Thread: 3/4-14 NPT.
• 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 distinctive aspect is the housing's impact strength. It is certified by BASEEFA to withstand two separate 4 Joule impacts at extreme temperatures, and CSA verified 7 Joule impact at room temperature. This ruggedness is crucial for protecting the probe in demanding industrial settings.

Applications and Use Cases

The 31000-27-05-00-035-03-02 is well-suited for vibration monitoring on turbines, compressors, pumps, and other rotating machinery. Its robust construction and reliable sealing make it ideal for areas where moisture or contaminants could compromise measurement accuracy.

For example, in a chemical processing plant, the housing's NEMA 4X and IP66 ratings help protect the probe from hose-directed water and dust. This ensures continuous, accurate data collection, which is vital for predictive maintenance programs.

Installation and Setup

Proper installation is key to the performance of the 31000-27-05-00-035-03-02. The housing features a 3/4-14 NPT mounting thread, which is required when using a standoff adapter. The fittings option includes two plugs, one 3/4-14 NPT fitting, and a cable seal grip with grommets for various cable sizes.

During installation, ensure the probe cable is routed through the seal grip and the grommet matches the cable diameter. This maintains the environmental seal and prevents strain on the cable. The recommended torque for the retaining nut is 29.4 N·m (260 in·lb).

Maintenance and Reliability

Regular inspection of the 31000-27-05-00-035-03-02 is essential for long-term reliability. Check the O-rings and seals for signs of wear or damage, especially in high-temperature or chemically aggressive environments. The stainless steel components resist corrosion, but periodic cleaning may be necessary.

Because the housing is not designed to resist internal or external pressure, avoid pressurizing the housing. If pressure testing is required for your application, contact the custom design department. Following these practices helps extend the service life of the housing and the probe.

Compatibility and Integration

The 31000-27-05-00-035-03-02 is designed for use with the 3300 XL NSv probe. This combination is commonly used with Bently Nevada monitoring systems. The housing's mounting and penetration options allow for flexible integration into various machine configurations.

It is important to verify the probe cable length and penetration requirements for your specific installation. The 0.5 m cable and 3.5 in penetration are standard options, but other configurations may be available.

Frequently Asked Questions

What is the temperature rating of the 31000-27-05-00-035-03-02?

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

What mounting thread is used on this housing?

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

What materials are used in the housing construction?

The housing is made of glass-reinforced PPS thermoplastic, with AISI 304 stainless steel for the sleeve and retaining chain, and AISI 303 for the outer sleeve and screws.

Does the housing come with a standoff adapter?

No, the standoff adapter option is 00, meaning no standoff adapter is included.

Product Support and Availability

The 31000-27-05-00-035-03-02 is available through Petro Auto Tech. Please contact us for current availability and lead times. Our team can assist with technical questions and ordering information.