21000-34-10-15-039-04-02 | Bently Nevada 8 mm Proximity Probe Housing Assembly

Introduction to the 21000-34-10-15-039-04-02 Proximity Probe Housing Assembly

When you need a robust solution for externally mounted proximity probes in hazardous areas, the 21000-34-10-15-039-04-02 from Bently Nevada delivers. This housing assembly is part of the 21000 series and is designed for use with 3300 XL 8 mm probes. It includes a connector protector and selectable hazardous area approvals. The assembly is built with an aluminum body and a 304 stainless steel sleeve for durability. It is certified as a CSA Type 4 enclosure and complies with API 670 standards. Whether you are monitoring rotating machinery or ensuring safety in explosive environments, this housing provides a reliable mounting solution.

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).
• Standoff Adapter: 1.5 in.
• Probe Penetration: 3.9 in (039).
• Fitting Option: One 3/4-14 NPT plug only.
• Mounting Thread: 3/4-14 NPT (required if standoff adapter is not -00).
• Material: Aluminum body with 304 stainless steel sleeve.
• Maximum (C) + (D) Dimension (with visible probe P/N and S/N): 17.0 in (43.18 cm).
• Maximum (C) + (D) Dimension: 32.9 in (83.5 cm).
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

One distinctive spec is the 1.0 m probe cable length, which allows for flexible installation in tight spaces while maintaining signal integrity. The CSA Type 4 enclosure rating ensures protection against dust and water ingress, making it suitable for harsh industrial environments.

Applications and Use Cases

In the oil and gas industry, the 21000-34-10-15-039-04-02 is ideal for vibration monitoring on compressors and turbines. Its explosion-proof rating (when ordered with appropriate options) makes it a safe choice for hazardous areas. Additionally, it is fully compliant with API 670, so it meets the standard for externally mounted proximity probe housings. For power generation plants, this housing provides reliable shaft displacement measurement. It also works well in chemical processing facilities where corrosive atmospheres require robust materials like 304 stainless steel.

Installation and Setup Guide

Mounting the 21000-34-10-15-039-04-02 requires a 3/4-14 NPT threaded port. Ensure the standoff adapter is set to 1.5 in for proper probe clearance. The probe penetration of 3.9 in must be adjusted to match the target surface. Use the included 3/4-14 NPT plug for the fitting option. Always follow the manufacturer's manual for torque specifications and wiring. For hazardous area installations, verify that the housing is ordered with the correct explosion-proof options (E:00, E:01, E:02, or E:04).

Maintenance and Reliability

Regular inspection of the O-rings and thread seal is recommended to maintain the CSA Type 4 enclosure rating. Check the probe cable for any signs of wear or damage, especially near the connector. The aluminum body and stainless steel sleeve resist corrosion, but periodic cleaning with a soft cloth helps maintain performance. Because this assembly is designed for long-term use, it reduces downtime and replacement costs. For optimal reliability, verify the mounting thread tightness annually.

Compatibility and Integration

The 21000-34-10-15-039-04-02 is compatible with Bently Nevada 3300 XL 8 mm proximity probes. It integrates with monitoring systems that accept standard proximity probe inputs. The housing is designed for external mounting per API 670 guidelines. It can be used with conduit fittings for secure cable routing. For intrinsically safe applications, pair it with hazardous area approved probes.

Frequently Asked Questions about the 21000-34-10-15-039-04-02

Q: What is the probe cable length for this housing?

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

Q: Is the 21000-34-10-15-039-04-02 rated for hazardous areas?

A: Yes, it is available with CSA explosion-proof ratings when ordered with the correct options (E:00, E:01, E:02, or E:04).

Q: What mounting thread does this assembly use?

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

Q: What is the weight of the housing without fittings?

A: The typical weight is 1.1 kg (2.4 lb).

Q: Does this housing comply with API 670?

A: Yes, it is fully compliant with the API 670 Standard for externally mounted proximity probe housings.

Product Support and Availability

The 21000-34-10-15-039-04-02 is in stock and ready to ship from Petro Auto Tech. As a trusted supplier of industrial automation parts, we offer new and original factory-packed units. Contact our team for assistance with ordering or to verify lifecycle status.