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- Bently Nevada
- 21000-28-05-00-045-04-02
- Proximity Probe Housing Assembly
- USA
- 83.3 mm
- 1.1 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Bently Nevada 21000-28-05-00-045-04-02 Proximity Probe Housing Assembly is a mechanical mounting component used to support and protect a proximity probe in machinery monitoring installations. It provides a defined mounting arrangement around the probe while helping maintain the physical position required for consistent proximity measurement.
In a typical Bently Nevada vibration monitoring installation, the housing assembly is installed at the machine or bearing housing where a proximity probe needs to be positioned toward a rotating shaft or other monitored target. The mechanical interface keeps the probe securely mounted and helps protect the sensing arrangement from the surrounding industrial environment.
The 21000-28-05-00-045-04-02 is particularly relevant to installations where probe mounting, mechanical protection, and repeatable positioning are important during commissioning and later maintenance. It can be used as part of a larger proximity measurement arrangement together with the probe, extension cable, and monitoring electronics.
Because the housing is a mechanical component rather than the signal-processing device itself, its value is primarily determined by correct mechanical fit, probe compatibility, mounting location, and the requirements of the monitored machine.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Bently Nevada |
| Model / Part Number | 21000-28-05-00-045-04-02 |
| Product Type | Proximity Probe Housing Assembly |
| Application | Proximity probe mounting and mechanical protection |
| Housing Body Diameter | 83.3 mm |
| Weight | 1.1 kg |
Product Features
- Provides a dedicated mechanical mounting arrangement for a proximity probe.
- Helps maintain a consistent probe position relative to the monitored machine surface.
- Supports installations where probe protection and mechanical stability are required.
- Suitable for integration into machinery condition monitoring arrangements.
- Can simplify probe replacement when the mechanical mounting arrangement remains in place.
- Intended for use as part of a complete proximity measurement installation rather than as a standalone monitoring device.
Working Principle
The housing assembly does not process vibration or position signals. Its function is mechanical: it holds the associated proximity probe in the required installation position and maintains the probe-to-target relationship during machine operation.
A typical measurement path can be represented as:
Rotating Shaft / Target → Proximity Probe → Extension Cable → Proximitor Interface → Monitoring System
The housing sits around the probe installation point and establishes the mechanical relationship between the probe and the machine structure. Once the probe is correctly installed, the sensing element can maintain the required clearance from the rotating target.
During maintenance, the housing also provides a repeatable mechanical reference. This is useful when a probe must be removed and reinstalled without changing the intended mounting arrangement.
Role in a Proximity Monitoring Control Architecture
Machine Shaft → Proximity Probe → Probe Housing Assembly → Proximitor / Interface → Monitoring Module → Machinery Protection or Control System
| System Element | Function |
|---|---|
| Rotating Shaft | Provides the monitored mechanical target |
| Proximity Probe | Detects changes in shaft position or relative displacement |
| 21000-28-05-00-045-04-02 | Provides the mechanical mounting and support arrangement for the probe |
| Proximitor / Interface | Converts and conditions the probe signal for the monitoring system |
| Monitoring Module | Processes the measurement and evaluates machine condition |
| Machinery Protection System | Uses the measurement for alarms, trips, or condition monitoring |
The housing therefore belongs to the mechanical side of the measurement chain. Correct mounting geometry is essential because even a properly functioning probe can produce an unsuitable measurement if its installation position or mechanical support is incorrect.
Industrial Applications
| Application | Typical Use |
|---|---|
| Turbomachinery Monitoring | Supports proximity probe installations used for shaft displacement and vibration monitoring |
| Compressor Monitoring | Provides a mechanical mounting arrangement for probes installed around rotating machinery |
| Pump Condition Monitoring | Used where non-contact shaft measurement requires a fixed probe installation |
| Bearing Housing Monitoring | Supports probe mounting near monitored bearing locations |
| Rotating Equipment Protection | Forms part of the mechanical installation associated with machinery protection measurements |
| Maintenance and Retrofit Work | Useful when replacing or restoring an existing probe mounting arrangement |
Installation and Maintenance
- Verify the mounting arrangement
Confirm that the housing configuration matches the intended machine location before installation. - Check probe compatibility
Make sure the proximity probe and associated hardware are mechanically compatible with the housing assembly. - Inspect the mounting surface
Remove dirt, corrosion, burrs, or other conditions that could prevent proper seating. - Confirm probe orientation
Install the probe according to the required measurement direction and machine geometry. - Maintain the required probe clearance
Set the probe position according to the applicable probe installation requirements rather than relying on the housing alone to establish the final clearance. - Secure the mechanical assembly
Tighten the mounting hardware using the applicable equipment installation procedure. - Avoid excessive mechanical loading
Do not use the housing as a leverage point when installing or removing the probe or associated hardware. - Check cable routing
Route the probe cable away from rotating components, high-temperature surfaces, and locations where mechanical abrasion may occur. - Inspect for vibration-related movement
During maintenance inspections, check for loose mounting hardware, abnormal movement, or signs of mechanical wear. - Check for contamination
Keep the mounting area free from accumulated oil, dirt, metal particles, and other contamination that could interfere with probe installation. - Verify the measurement after maintenance
After replacing or repositioning a probe, confirm that the monitoring system receives a valid signal and that the machine measurement is consistent with expected operating conditions. - Inspect during scheduled machinery maintenance
Include the housing, probe mounting point, and related mechanical hardware in routine inspection activities for critical rotating equipment.
Compatible System Components
| Component | Role in the System |
|---|---|
| Bently Nevada Proximity Probe | Provides the non-contact measurement at the machine |
| Proximity Probe Extension Cable | Connects the probe to the associated interface electronics |
| Proximitor Sensor / Interface | Supplies the probe interface and signal conditioning |
| Machinery Monitoring Module | Receives and evaluates the proximity measurement |
| Machinery Protection System | Handles alarm, trip, and monitoring functions |
| Machine Bearing or Probe Mounting Structure | Provides the physical installation point for the housing assembly |
Recommended Related Models
| Model | Product Type / Application |
|---|---|
| Bently Nevada 21000 Series Proximity Probe Housing Assemblies | Mechanical probe mounting and protection |
| Bently Nevada 3300 XL Proximity Probes | Shaft displacement and vibration measurement |
| Bently Nevada 3300 XL Proximitor Sensors | Probe interface and signal conditioning |
| Bently Nevada 3300 Monitoring Modules | Machinery measurement and monitoring |
| Bently Nevada 3300 System Components | Supporting hardware for complete machinery monitoring installations |
Key Advantages
- Provides a defined mechanical interface for proximity probe installation.
- Helps maintain repeatable probe positioning.
- Supports protected installations around rotating machinery.
- Simplifies integration of the probe into an existing monitoring arrangement.
- Suitable for maintenance and replacement work on established machinery monitoring systems.
Technical FAQs
What is the function of the Bently Nevada 21000-28-05-00-045-04-02?
It is a Proximity Probe Housing Assembly used to mechanically mount and support an associated proximity probe within a machinery monitoring installation.
Does the 21000-28-05-00-045-04-02 measure vibration directly?
No. The housing is a mechanical component. The actual proximity measurement is performed by the associated probe, while the signal is processed by the connected interface and monitoring equipment.
What should be checked when replacing this housing assembly?
The mounting location, probe compatibility, mechanical fit, probe orientation, mounting condition, and required probe clearance should all be checked before the replacement is commissioned.
Can the housing assembly be reused when replacing a proximity probe?
It may be reusable when the housing remains mechanically sound and is compatible with the replacement probe and installation arrangement. The mounting condition and probe positioning should be verified after the replacement.