Optimized Probe Housing for Reliable Vibration Monitoring in Industrial Environments

The Bently Nevada 21000-28-05-30-024-03-02 3300 XL Probe Housing Assembly is a precision-engineered external mounting solution designed to protect and support 3300 XL 8 mm reverse-mount proximity probes with selectable hazardous-area approvals. Built for continuous machine condition monitoring, this assembly combines a rugged cast aluminum housing with a corrosion-resistant stainless-steel probe sleeve to provide long-lasting protection against moisture, dirt, oil, and mechanical impact. Its modular design enables fast probe installation, adjustment, and maintenance, making it an excellent choice for predictive maintenance programs and critical rotating machinery applications.

This configuration includes a 3300 XL 8 mm reverse-mount proximity probe, a 0.5 m (20 in.) integral probe cable, a 3.0-inch (76 mm) standoff adapter, a 2.4-inch (61 mm) probe penetration, Option 03 conduit fittings, and a 3/4-14 NPT mounting thread. The integrated standoff adapter provides additional installation flexibility for equipment requiring extra clearance while maintaining accurate shaft vibration and position measurements.

Technical Specifications

Technical FAQs

1. What is the purpose of this probe housing assembly?

It provides a protected external mounting enclosure for a 3300 XL 8 mm reverse-mount proximity probe, ensuring accurate shaft vibration and position monitoring while simplifying maintenance.

2. Which probe is included?

This model includes a 3300 XL 8 mm reverse-mount probe with selectable hazardous-area approvals (Option 28).

3. What does option "05" indicate?

Option 05 specifies a 0.5-meter (20-inch) integral probe cable.

4. What does the "30" option represent?

Option 30 specifies a 3.0-inch (76 mm) standoff adapter, providing additional clearance between the machine surface and the probe housing.

5. What does probe penetration "024" mean?

It indicates a 2.4-inch (61 mm) probe penetration length, making the assembly suitable for compact and standard bearing housing configurations.

6. What is included with fitting option "03"?

Option 03 includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and one cable seal grip with interchangeable grommets for multiple cable diameters.

7. Which mounting thread does this assembly use?

The housing is supplied with a 3/4-14 NPT mounting thread for secure installation on industrial equipment.

8. What materials are used in the housing?

The assembly features a cast aluminum housing with a 304 stainless-steel probe sleeve, providing excellent durability and corrosion resistance.

9. Is this assembly suitable for hazardous-area installations?

Yes. The included probe supports selectable hazardous-area approvals when installed in accordance with applicable standards and regulations.

10. Which industries commonly use this model?

It is widely used in oil & gas, petrochemical, power generation, mining, pulp and paper, and other industries requiring continuous monitoring of critical rotating machinery.