31000-00-00-00-070-03-02 | Bently Nevada 7.0 in Proximity Probe Housing

Introduction to the Bently Nevada 31000-00-00-00-070-03-02

When industrial environments demand reliable vibration monitoring, the 31000-00-00-00-070-03-02 from Bently Nevada provides a robust housing solution. This 31000 series proximity probe housing is designed to protect sensitive probes in harsh conditions, ensuring accurate measurements for critical machinery.

With a glass-reinforced polyphenylene sulfide (PPS) thermoplastic body containing conductive fibers, this housing offers excellent durability and electrostatic dissipation. The stainless steel sleeve and retaining chain add further strength, making it suitable for demanding applications.

Key Features and Technical Specifications

• Probe Penetration: 7.0 inches (070 option)
• Mounting Thread: 3/4-14 NPT (option 02)
• Fittings: Two plugs, one 3/4-14 NPT fitting, one 3/4-14 to 1/2-14 NPT SST reducer
• Cable Seal Grip: Accommodates cable sizes from 1/8 to 3/8 inches
• Housing Material: Glass-reinforced 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)

The housing is certified to Type 4X (CSA) and IP66 standards, ensuring protection against water and dust ingress. Additionally, it meets CENELEC EN50014 for electrostatic dissipation in hazardous areas.

Applications and Use Cases

This proximity probe housing is ideal for rotating machinery monitoring, including turbines, compressors, and pumps. Its rugged construction ensures reliable performance in extreme temperatures and harsh industrial environments.

For example, in a petrochemical plant, the housing protects the probe from moisture and corrosive elements, maintaining accurate vibration readings. Similarly, in power generation facilities, it withstands high temperatures and mechanical stress.

Installation and Setup

When installing the 31000-00-00-00-070-03-02, 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 provided cable seal grip with appropriate grommets for your cable diameter.

For applications requiring a standoff adapter, note that the mounting thread option 02 is required. Always follow the manufacturer's guidelines to ensure a secure and leak-proof installation.

Maintenance and Reliability

Regular inspection of the housing and seals is recommended to maintain its protective rating. Check the O-rings and grommets for wear and replace them as needed. The stainless steel components resist corrosion, extending the service life.

Given its impact strength—certified to withstand 4 Joule impacts at extreme temperatures—the housing is built for long-term reliability. Periodic verification of the mounting torque helps prevent loosening due to vibration.

Compatibility and Integration

This housing is designed for use with 3300 XL 8 mm proximity probes. It is not intended for pressure applications; the sealing is for environmental protection only. For pressure testing requirements, contact Bently Nevada's custom design department.

The housing's NPT threads allow integration with standard industrial piping and fittings, simplifying installation in existing systems.

Frequently Asked Questions

Q: What is the temperature rating of the 31000-00-00-00-070-03-02?

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

Q: What cable sizes does the seal grip accommodate?

A: The cable seal grip fits cables from 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches.

Q: Is the housing certified for hazardous areas?

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

Q: Can the housing withstand impacts?

A: Yes, it is certified by BASEEFA to withstand two 4 Joule impacts at -39°C and 115°C, and CSA verified 7 Joule impacts at room temperature.

Product Support and Availability

The Bently Nevada 31000-00-00-00-070-03-02 is available through Petro Auto Tech. Contact us for current availability and lifecycle status. We are ready to assist with your order.