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3300 XL 8mm probe, selectable
hazardous area approvals
0.5 m (20 in)
No standoff adapter
5.2in
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
3/4-14 NPT
Technical specifications for 21000-28-05-00-052-03-02
Manufacturer:
Bently Nevada
Product Category:
Machinery Monitoring System
Spare Part Number:
21000-28-05-00-052-03-02
Estimated shipping dimensions:
30.5x8.5x8.5cm
Weight:
1.05 kg
Tariff Code:
8537101190
Country of origin:
USA
Place of shipment:
Xiamen, Fujian, China
robe with Connector:
3300 XL 8mm probe, selectable hazardous area approvals
Probe Cable Length:
0.5 m (20 in)
Standoff Adapter:
No standoff adapter
Probe Penetration:
5.2in
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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All parts new original are covered by Apterpower 12 month warranty
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The 21000-28-05-00-052-03-02 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.
A dome cover that screws into the body of the housing
Threaded ports for conduit connections
Optional conduit fittings
You can order hazardous area approved proximity probes with 21000 aluminum and 24701 stainless steel housings for intrinsically safe applications. Both housings are certified as CSA Type 4 enclosures and are fully compliant with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings.The 164818 Compact Proximity Probe Housing is also available for applications with space restrictions. Ceramic capped probes are available with the 164818 housing.Sleeve length is determined by the location in which the probe and housing are installed. The probe lead must be longer than the sleeve. Sleeve lengths longer than 304 mm (12 inches) require additional sleeve support to reduce the vibration associated with unsupported long sleeve lengths.Bently Nevada offers a probe support and oil seal (part number 37948-01) for long sleeves that must go through an inner bearing housing. We also make custom sleeve supports.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Bently Nevada 21000-28-05-00-052-03-02 Proximity Probe Housing AssembliesManuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Oil & Gas
This is the most common industry for the 21000 series due to the constant presence of explosive gases.Monitoring axial thrust and radial vibration in high-speed compressors.And used in pipeline stations for gas turbines and boost compressors.
Power Generation
Reliability in power plants is essential for grid stability. The housing allows for probe maintenance without shutting down the unit.
Petrochemical & Chemical Processing
Chemical plants often involve volatile processes where precision monitoring is a safety requirement. Monitoring high-speed cracked gas compressors. And used on synthesis gas units and ammonia compressors where explosive atmospheres are common.
Mining & Metallurgy
In these sectors, the housing acts as a physical shield against extreme dust and mechanical stress. Monitoring the massive air blowers that support smelting operations.
Ensure the 5.2-inch (132 mm) sleeve length is appropriate for your machine's casing. If the sleeve is too long, the probe tip could physically strike the rotating shaft, causing immediate destruction of the probe and potential damage to the shaft. Never set the probe gap by "feel" or distance measurements alone. You must use a voltmeter to measure the Bias Out voltage from the Proximitor. For a standard 3300 XL system, the gap should typically be set to -10.0 VDC (the center of the linear range). Use an appropriate thread lubricant or sealant (like Loctite or PTFE tape) on the 3/4-14 NPT mounting threads to prevent process oil from leaking out of the machine case and into the housing.
What is the Bently Nevada 21000-28-05-00-052-03-02？
The Bently Nevada 21000-28-05-00-052-03-02 is a specific configuration of an all-metal Proximity Probe Housing Assembly. These assemblies are used to externally mount proximity probes on rotating machinery (like turbines and compressors), allowing for probe replacement or gap adjustment without needing to disassemble the machine.
Does the model number 21000-28-05-00-052-03-02 include a probe?
Yes. The -28 option signifies that a 3300 XL 8 mm probe with Multiple Approvals (hazardous area certifications) is included as part of the assembly.
What is the difference between the 21000 and the 33000 series?
The 21000 is the aluminum version (more rugged and standard for O&G), while the 31000 is stainless steel, and the 33000 is often a smaller, non-explosion-proof or plastic-based alternative. The 21000 is the "industry standard" for API 670 compliance.
What should I do if I find oil stains inside the casing on 21000-28-05-00-052-03-02?
This usually indicates a failed oil seal or O-ring at the base of the housing where it meets the machine casing. If the machine is pressurized, oil can migrate up the probe sleeve. You should inspect the O-rings and ensure the mounting threads (3/4-14 NPT) were treated with appropriate thread sealant.
What does 21000-28-05-00-052-03-02 include?
The Bently Nevada 21000-28-05-00-052-03-02 is a complete Proximity Probe Housing Assembly. When you order this specific part number, it arrives as a pre-configured kit designed for immediate installation onto a machine case.
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