
Product Overview
The Bently Nevada 21000-28-05-00-067-03-02 is a Proximity Probe Housing Assembly designed for the 3300 XL Proximity Transducer System. It provides a secure, stable, and precisely aligned mounting structure for proximity probes used in rotating machinery condition monitoring and protection systems.
This assembly enables accurate measurement of shaft vibration, shaft displacement, and rotor position, making it suitable for critical industrial equipment in power generation, oil & gas, petrochemical, and heavy industry applications.
Technical Specifications
| Parameter |
Details |
| Manufacturer |
Bently Nevada |
| Model |
21000-28-05-00-067-03-02 |
| Product Type |
Proximity Probe Housing Assembly |
| Compatible System |
3300 XL Proximity Transducer System |
| Housing Body Diameter |
83.3 mm |
| Weight |
1.1 kg |
| Mounting Type |
External machine or bearing housing installation |
| Housing Material |
Industrial-grade metal alloy |
| Probe Compatibility |
3300 XL proximity probes |
| Cable Entry Type |
Threaded conduit connection |
| Measurement Functions |
Shaft vibration, shaft displacement, rotor position |
| Application Category |
Machinery protection and condition monitoring |
| Environmental Suitability |
Industrial operating environments |
Function and Working Principle
The housing assembly acts as a protective enclosure and precision alignment support for proximity probes.
Working Principle
- A 3300 XL proximity probe is installed inside the housing.
- The probe is positioned near the rotating shaft without physical contact.
- Shaft vibration, displacement, and movement are detected by the probe.
- Signals are transmitted to monitoring and protection systems.
- The housing ensures stable probe alignment and protection from environmental and mechanical stress.
This ensures continuous and accurate machinery condition monitoring.
Role in Condition Monitoring Systems
- Provides secure and stable probe mounting
- Maintains precise alignment for accurate measurement
- Protects probes from dust, moisture, and mechanical impact
- Supports continuous vibration and displacement monitoring
- Improves reliability of machinery protection systems
- Reduces maintenance and recalibration needs
Industrial Applications
- Steam turbines
- Gas turbines
- Hydroelectric turbines
- Centrifugal compressors
- Industrial pumps
- Electric motors
- Gearboxes
- Power generation facilities
- Oil and gas processing plants
- Petrochemical plants
Installation Guidelines
- Mount securely on machine casing or bearing housing
- Maintain proper probe-to-shaft clearance
- Use threaded conduit entry for cable protection
- Verify probe alignment after installation
- Confirm stable signal output in monitoring system
- Follow ESD-safe installation procedures
Proper installation ensures long-term measurement accuracy and reliability.
Compatible Components
- 3300 XL proximity probes
- Proximitor sensor systems
- Extension cables and connectors
- Machinery protection systems
- Turbine supervisory instrumentation (TSI) systems
- Industrial vibration monitoring platforms
Alternative Models
| Model |
Description |
| 21000-28-05-00-067-03-02 |
Standard 3300 XL probe housing assembly (this model) |
| 21000 Series Variants |
Other mounting/configurations |
| 24701 Series |
Stainless steel housing assemblies |
| Compact Housing Assemblies |
Space-constrained installations |
| Heavy-Duty Housing Assemblies |
Harsh industrial environments |
Key Advantages
- Rugged industrial-grade construction
- Stable and precise probe positioning
- Strong protection against environmental stress
- Supports accurate vibration and displacement monitoring
- Reduces maintenance and alignment effort
- Fully compatible with 3300 XL systems
- Long operational service life
Technical FAQs
What is the purpose of this housing assembly?
It provides secure mounting and protection for 3300 XL proximity probes in rotating machinery.
Does the housing measure vibration directly?
No. The proximity probe performs measurement; the housing ensures correct positioning and protection.
Which machinery uses this assembly?
Turbines, compressors, pumps, motors, and other rotating equipment.
Why is probe alignment important?
Accurate alignment ensures reliable vibration, displacement, and rotor position readings.
Is it suitable for industrial environments?
Yes. It is designed for continuous operation in harsh industrial conditions.
Conclusion
The Bently Nevada 21000-28-05-00-067-03-02 Proximity Probe Housing Assembly is a durable and precision-engineered mounting solution for 3300 XL proximity probes. Its robust construction and stable alignment capability make it essential for accurate condition monitoring and protection of critical rotating machinery in industrial applications.