21000-34-10-15-039-03-02 | Bently Nevada 1.0 m Probe Housing Assembly

Introduction to the 21000-34-10-15-039-03-02

When vibration monitoring demands rugged, explosion-proof housing for proximity probes, the 21000-34-10-15-039-03-02 from Bently Nevada delivers a field-proven solution. This assembly integrates a 3300 XL 8 mm probe with connector protector, a 1.0 m (39 in) probe cable, a 1.5 in standoff adapter, and a 3.9 in probe penetration. Designed for hazardous areas, it carries CSA approval as an explosion-proof enclosure and meets API 670 standards for externally mounted proximity probe housings.

Key Features & Technical Specs of the 21000-34-10-15-039-03-02

• Probe: 3300 XL 8 mm with connector protector and selectable hazardous area approvals.
• Cable Length: 1.0 m (39 in) – flexible for routing in tight machine compartments.
• Standoff Adapter: 1.5 in – ensures proper probe-to-target gap.
• Probe Penetration: 3.9 in – accommodates varying wall thicknesses.
• Mounting Thread: 3/4-14 NPT – standard industrial connection.
• Body Material: Aluminum with 304 stainless steel sleeve – corrosion resistant and lightweight.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Temperature Range: Operating and storage -51°C to +177°C (-60°F to +351°F) – suitable for extreme environments.
• Enclosure Rating: CSA Type 4 – dust-tight and watertight.

The 21000-34-10-15-039-03-02 includes a dome cover, threaded conduit ports, O-rings, a reverse mount proximity probe, a thread seal, and optional conduit fittings. This complete package simplifies installation and reduces field assembly time.

Applications & Use Cases

Maintenance engineers in oil refineries, chemical plants, and power generation facilities rely on the 21000-34-10-15-039-03-02 for critical rotating machinery such as compressors, turbines, and pumps. Its CSA explosion-proof rating makes it ideal for hazardous areas where flammable gases or dusts are present. Additionally, the assembly’s compliance with API 670 ensures consistent performance in externally mounted probe applications. For example, a refinery using this housing on a centrifugal compressor can achieve reliable shaft vibration monitoring even in extreme temperatures.

Installation & Setup

Mount the 21000-34-10-15-039-03-02 using the 3/4-14 NPT thread option. The included fittings—one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets for cable sizes from 1/8 to 3/8 inches—simplify conduit connections. Ensure the standoff adapter (1.5 in) is correctly positioned to maintain the proper probe gap. For hazardous area installations, follow all local electrical codes and the manufacturer’s safety manual.

Maintenance & Reliability

Regularly inspect the O-rings and thread seal for wear to maintain the explosion-proof integrity. The aluminum body with stainless steel sleeve resists corrosion, reducing maintenance frequency. In high-vibration environments, verify that all fittings remain tight. This assembly’s robust construction minimizes downtime and extends service life, delivering long-term cost savings.

Compatibility & Integration

The 21000-34-10-15-039-03-02 is designed for use with Bently Nevada 3300 XL 8 mm proximity probes and compatible monitors. It integrates seamlessly into existing vibration monitoring systems without requiring special adapters. For intrinsically safe applications, pair it with a hazardous area approved probe.

FAQ about the 21000-34-10-15-039-03-02

What is the maximum cable length for this housing assembly?

The 21000-34-10-15-039-03-02 includes a 1.0 m (39 in) probe cable. For longer runs, refer to Bently Nevada documentation or contact Petro Auto Tech.

Can this housing be used in intrinsically safe applications?

Yes, the 21000-34-10-15-039-03-02 is CSA certified for hazardous areas and can be ordered with hazardous area approved probes for intrinsically safe installations.

What is the temperature range for the 3300 XL 8 mm probe?

The operating and storage temperature range is -51°C to +177°C (-60°F to +351°F).

Does the assembly include the probe?

Yes, the 21000-34-10-15-039-03-02 includes a reverse mount proximity probe (3300 XL 8 mm with connector protector).

What mounting thread options are available?

The assembly uses a 3/4-14 NPT mounting thread. The standoff adapter option -02 specifies this thread.

Product Support & Availability

The 21000-34-10-15-039-03-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and lead times. We provide factory warranty and original packaging.