21000-34-10-30-039-04-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction to the 21000-34-10-30-039-04-02

When reliable vibration monitoring is critical for rotating machinery, the 21000-34-10-30-039-04-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series, designed for external mounting per API 670 standards. It includes an aluminum body with a 304 stainless steel sleeve, ensuring durability in harsh industrial environments. The assembly comes with a 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals, and a 1.0 m (39 in) probe cable. Engineers can trust this housing for accurate shaft displacement measurements in turbines, compressors, and pumps.

Key Features and Technical Specifications

• Probe Option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe Cable Length: 1.0 m (39 in) for flexible installation.
• Standoff Adapter: 3.0 in length for precise positioning.
• Probe Penetration: 3.9 in for optimal sensing depth.
• Fitting Option: One 3/4-14 NPT plug for conduit connection.
• Mounting Thread: 3/4-14 NPT for secure attachment.
• Material: Aluminum body with 304 stainless steel sleeve for corrosion resistance.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Temperature Range: -51°C to +177°C (-60°F to +351°F) for the 3300 XL 8 mm probe.

A distinctive feature is the CSA Type 4 enclosure rating, which makes the housing explosion-proof for hazardous areas when ordered with appropriate options. This ensures safe operation in environments with flammable gases or dusts.

Applications and Use Cases

The 21000-34-10-30-039-04-02 excels in vibration monitoring for critical rotating equipment. For example, in a refinery, this housing assembly can be mounted on a centrifugal compressor to detect shaft vibration early, preventing unplanned downtime. Its CSA certification for hazardous areas makes it suitable for oil and gas, petrochemical, and power generation industries. Additionally, the API 670 compliance ensures compatibility with standard monitoring systems, simplifying integration into existing setups.

Installation and Setup

Mounting the 21000-34-10-30-039-04-02 requires a 3/4-14 NPT threaded port. The standoff adapter length of 3.0 in must be ordered if the mounting thread option is not -00. Ensure the probe penetration of 3.9 in is set correctly for accurate measurements. The housing includes a dome cover and O-rings for a sealed installation. For hazardous area installations, use only CA versions of the housing with appropriate explosion-proof fittings. Always follow Bently Nevada's installation manual for torque specifications and wiring guidelines.

Maintenance and Reliability

Regular inspection of the 21000-34-10-30-039-04-02 is essential for long-term reliability. Check the O-rings and seals annually for wear or damage. The aluminum body and stainless steel sleeve resist corrosion, but periodic cleaning with a dry cloth is recommended. Verify the probe cable integrity and connector tightness during routine maintenance. For hazardous area installations, follow the manufacturer's safety manual for inspection intervals. This proactive approach extends service life and reduces the risk of unexpected failures.

Compatibility and Integration

The 21000-34-10-30-039-04-02 is designed for use with Bently Nevada monitoring systems and compatible vibration monitoring equipment. It integrates seamlessly with the 3300 XL 8 mm probe, which is a standard in the industry. The housing's CSA Type 4 enclosure and API 670 compliance ensure compatibility with most industrial monitoring architectures. For integration details, refer to Bently Nevada's documentation or contact Petro Auto Tech for support.

Frequently Asked Questions

Q: What is the cable length of the 21000-34-10-30-039-04-02?

A: The probe cable length is 1.0 m (39 in).

Q: Is the 21000-34-10-30-039-04-02 suitable for hazardous areas?

A: Yes, when ordered with the E:00, E:01, E:02, or E:04 options and a CA version housing, it is CSA rated explosion-proof.

Q: What is the temperature range for the probe?

A: The 3300 XL 8 mm probe operates and stores from -51°C to +177°C (-60°F to +351°F).

Q: What mounting thread does the 21000-34-10-30-039-04-02 use?

A: It uses a 3/4-14 NPT mounting thread.

Q: What is the weight of the housing assembly?

A: The typical weight is 1.1 kg (2.4 lb) without fittings.

Product Support and Availability

The 21000-34-10-30-039-04-02 is available in stock and ready to ship from Petro Auto Tech. As a trusted supplier of industrial automation parts, Petro Auto Tech offers new and original factory-packed units with a 12-month warranty. For lifecycle status or technical questions, contact Petro Auto Tech for assistance.