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Proximity Probe Housing Assembly
Aluminum body with 304
stainless steel sleeve
Precision Die-Cast Aluminum Body
2.0" (51 mm) Standoff Adapter Length
3.5" (89 mm) Sleeve Penetration Depth
Technical specifications for 21000-28-05-20-035-03-02
Manufacturer:
Bently Nevada
Product Category:
Machinery Monitoring System
Spare Part Number:
21000-28-05-20-035-03-02
Estimated shipping dimensions:
30.5x8.5x8.5cm
Weight:
1.05 kg
Tariff Code:
8537101190
Country of origin:
USA
Place of shipment:
Xiamen, Fujian, China
Probe with Connector:
3300 XL 8mm probe, selectable hazardous area approvals
Probe Cable Length:
0.5 m (20 in)
Standoff Adapter:
2.0 in （51mm）
Probe Penetration:
3.5 in （89mm）
Fittings:
One 3/4-14 NPT plug One 3/4-14 to 1/2-14 NPT reducer One cable seal grip with grommets for the following cable sizes: • 1/8 to 3/16 inches • 1/4 to 5/16 inches • 5/16 to 3/8 inches
Mounting Thread:
3/4-14 NPT
By purchasing this item, you agree to the Terms & Conditions
Apter Power is NOT an authorized distributor of Bently Nevada
Factory New
These are new and current items that are procured from the manufacturer.
New No Package
These parts are new. They have not been used, but their original packaging is no longer available.
New In Opened Package
These parts are new. They have not been used, but their original packaging has been opened or the packaging is significantly aged.
New In Sealed Package
Parts are new. They have not been used and still have their original package seal intact.
New in Original Package
These parts are new. The packages were not originally sealed by their original manufacturer.
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1.Full one year warranty on all components
2.Professional after selling team
3.Same-day dispatch payment come
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6.More than 20 years experience in automation
7.Stable employees more than 10+ years working experience
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Same day dispatch from warehouse inventory
Warranty
All parts new original are covered by Apterpower 12 month warranty
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We provide 1 year warranty on every product we sell.
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The 21000-28-05-20-035-03-02 is a 21000 series pre-installed Panamax-style aluminum proximity sensor enclosure assembly manufactured by Benly Industries, Inc. It is an integrated industrial-grade explosion-proof protection device specifically designed for installation on the enclosures of large, heavy-duty rotating machinery.
O-rings
A thread seal
Optional conduit fittings
The 21000, 24701, and 164818 Proximity Probe Housing Assemblies are available with Canadian Standards Association (CSA) approvals. They are rated explosion proof for hazardous areas. As part of this certified protection lineup, the 21000-28-05-20-035-03-02 features an aluminum housing body that is fully available with Canadian Standards Association (CSA) approvals, making it officially rated explosion proof for hazardous areas. When ordered with its factory-included hazardous area approved proximity probe, this model provides complete peace of mind for intrinsically safe applications in volatile environments. Furthermore, the entire assembly is certified as a CSA Type 4 watertight and dust-tight enclosure, while remaining fully compliant with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings to guarantee maximum reliability on critical turbomachinery .
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Power Generation Industry
Used to monitor shaft vibration and axial displacement of steam turbine generators and gas turbines, preventing severe rotor-stator rubbing or blade damage.
Oil & Gas
Monitored on large crude oil transfer pumps and water injection pumps on offshore platforms or onshore wells to ensure the continuity of high-pressure transport systems.
Coal Chemical Industry
Applied to measure the internal bearing vibration of air separation compressors and high-pressure coal slurry pumps to avoid malignant accidents in specialized gas compressors.
Steel & Metallurgical Industry
Used to monitor the rotational speed and relative vibration of blast furnace blowers, Top Pressure Recovery Turbines (TRT), and the main drive shafts of large steel rolling mills.
Pulp & Paper Industry
Monitored the shaft relative vibration and thermal expansion displacement of high-speed paper machine dryer cylinders, press rolls, and high-consistency pulpers to ensure uniform paper coating.
During use, it is critical to precisely adjust the gap (linear working distance) between the probe tip and the target shaft surface to prevent measurement distortion or physical collision. Never twist or pull the cable forcefully during installation or removal, as this can easily damage the coaxial cable or internal connectors. When mounting the assembly onto the machinery, high-quality sealants must be applied to ensure strict sealing of the NPT threads, meeting the explosion-proof and pressure containment requirements of hazardous areas. Additionally, inspect the housing interior regularly to prevent moisture or oil ingress from degrading signal transmission.
What kind of product is the 21000-28-05-20-035-03-02?
The 21000-28-05-20-035-03-02 is an aluminum-body proximity probe housing assembly manufactured by Bently Nevada, which comes pre-installed with a 3300 XL 8mm vibration sensor.
What is the primary purpose of using the 21000-28-05-20-035-03-02?
The 21000-28-05-20-035-03-02 externally mounts and protects displacement sensors on rotating machinery from severe outdoor weathering, corrosive oil mist, and moisture.
What materials are used to construct the 21000-28-05-20-035-03-02?
The 21000-28-05-20-035-03-02 features a lightweight precision die-cast aluminum housing body paired with a heavy-duty 304 stainless steel probe protective sleeve.
Can we adjust the sensor gap inside the 21000-28-05-20-035-03-02 while the machine is running?
Yes, the 21000-28-05-20-035-03-02 allows external, online adjustment of the probe gap and probe replacement without disassembling the machine or stopping production.
In which industrial sectors is the 21000-28-05-20-035-03-02 most commonly found?
The 21000-28-05-20-035-03-02 is widely utilized in thermal power generation, oil & gas pipeline transmission, chemical refining, and heavy manufacturing.
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