
Product Overview
The Bently Nevada 21000-28-05-00-40-03-02 is a Proximity Probe Housing Assembly designed for the 3300 XL Proximity Transducer System. It provides a robust and precisely aligned mounting solution for proximity probes, enabling accurate monitoring of critical rotating machinery.
This housing assembly ensures reliable measurement of shaft vibration, displacement, and rotor position, making it ideal for industrial applications including power generation, petrochemical, and oil & gas facilities.
Technical Specifications
| Parameter |
Details |
| Manufacturer |
Bently Nevada |
| Model |
21000-28-05-00-40-03-02 |
| 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 precise alignment platform for proximity probes.
Working Principle
- A 3300 XL proximity probe is installed inside the housing.
- The probe is positioned close to the rotating shaft without contact.
- Shaft vibration, displacement, and rotor movement are detected by the probe.
- Signals are transmitted to monitoring and protection systems.
- The housing maintains stable alignment and protection against 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 probe alignment for accurate readings
- Protects probes from dust, moisture, and mechanical damage
- Supports continuous monitoring of vibration and displacement
- Improves reliability of machinery protection systems
- Reduces maintenance and recalibration frequency
Industrial Applications
- Steam turbines
- Gas turbines
- Hydroelectric turbines
- Centrifugal compressors
- Industrial pumps
- Electric motors
- Gearboxes
- Power generation plants
- Oil and gas processing facilities
- Petrochemical plants
Installation Guidelines
- Securely mount on machine casing or bearing housing
- Maintain proper probe-to-shaft clearance
- Route cables through threaded conduit connections
- Verify probe alignment before commissioning
- Confirm stable signal output in the monitoring system
- Follow standard industrial safety and ESD procedures
Proper installation ensures long-term reliability and measurement accuracy.
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 |
| 21000-28-05-00-40-03-02 |
Standard 3300 XL probe housing assembly (this model) |
| 21000 Series Variants |
Different mounting and configuration options |
| 24701 Series |
Stainless steel housing assemblies |
| Compact Housing Assemblies |
Space-constrained installations |
| Heavy-Duty Housing Assemblies |
For harsh industrial environments |
Key Advantages
- Rugged industrial-grade construction
- Stable and precise probe positioning
- Protection against environmental and mechanical stress
- Supports accurate vibration and displacement measurements
- Reduces maintenance and alignment effort
- Fully compatible with 3300 XL systems
- Long operational service life
Technical FAQs
What is the main function of this housing assembly?
It provides secure mounting and protection for 3300 XL proximity probes in rotating machinery.
Does the housing itself measure vibration?
No, the installed proximity probe performs measurements. The housing ensures correct positioning and protection.
Which machinery commonly uses this assembly?
Turbines, compressors, pumps, motors, and other rotating equipment.
Why is probe alignment critical?
Accurate alignment ensures reliable readings of vibration, displacement, and rotor position.
Is this housing suitable for industrial environments?
Yes, it is designed for continuous operation in harsh industrial conditions.
Conclusion
The Bently Nevada 21000-28-05-00-40-03-02 Proximity Probe Housing Assembly is a durable and precision-engineered mounting solution for 3300 XL proximity probes. Its robust construction and accurate alignment capabilities make it essential for reliable condition monitoring and protection of critical rotating machinery.