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      21000-28-05-20-035-03-02

      Proximity Probe Housing Assembly
      Product image is representative; revision or series may vary. Contact us to request a specific version.

      Product Describe：

      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

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      Technical specifications for 21000-28-05-20-035-03-02

      • Manufacturer:
        Bently Nevada
      • Product Category:
        Machinery Monitoring Systems
      • Spare Part Number:
        21000-28-05-20-035-03-02
      • Estimated shipping dimensions:
        30.5x8.5x8.5cm
      • Weight:
        1.05 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        USA
      • 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
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      Information

      Overview Manuals Common Applications Product Precautions
      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. 
       Bently Nevada 21000-28-05-20-035-03-02 Proximity Probe Housing Assembly Manuals, 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.
      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.

      FAQ View All FAQ

      • 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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