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        21000-28-10-20-102-01-02

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        1001 reviews ｜ Need a Specific Revision?
        The 21000-28-10-20-102-01-02 is a 21000 Series Proximity Probe Housing Assembly featuring aluminum construction for use with 3300 XL 8 mm probes with selectable hazardous area approvals.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 21000-28-10-20-102-01-02

        • Manufacturer:
          Bently Nevada
        • Part Number:
          21000-28-10-20-102-01-02
        • Product Family:
          21000, 24701, and 164818 Proximity Probe Housing A
        • Product Type:
          21000 Series Proximity Probe Housing Assembly
        • Compatible Probe:
          3300 XL 8 mm probe with selectable hazardous area approvals
        • Probe Cable Length:
          1.0 m (39 in)
        • Standoff Adapter:
          2.0 in
        • Probe Penetration:
          10.2 in
        • Mounting Thread:
          3/4-14 NPT
        • Fittings Included:
          One 3/4-14 NPT explosion-proof fitting; One 3/4-14 NPT plug
        • Housing Material:
          Aluminum
        • Agency Approvals:
          CSA explosion-proof; CSA Type 4
        • Key Benefit:
          Solves the challenge of mounting through thick casings or insulation by combining a 2.0-inch standoff with 10.2 inches of probe penetration in a CSA-approved assembly.
        • Weight:
          1.05 kg
        • Estimated shipping dimensions:
          30.5x8.5x8.5cm
        • Tariff Code:
          8479899990
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Application Physical Connections Safety & Compliance

        Features:

        • 10.2-inch probe penetration combined with a 2.0-inch standoff adapter provides exceptional reach for thick casings, insulation layers, or double-walled equipment.
        • CSA explosion-proof certification with CSA Type 4 enclosure rating ensures safe operation in hazardous areas with protection against water and dust ingress.
        • 1.0-meter integral probe cable reduces field wiring complexity by providing ample length to reach termination points without requiring additional extension cables.
        The 21000-28-10-20-102-01-02 is designed for equipment where the measurement point sits deep inside the casing. Its 10.2-inch probe penetration allows the sensor to reach targets that would be inaccessible with standard housings, while the 2.0-inch standoff adapter pushes the housing away from the casing surface to clear insulation, guards, or installation tools.

        This housing carries CSA explosion-proof certification and is rated CSA Type 4, meaning it is suitable for use in classified hazardous areas and can withstand water ingress from washdowns or outdoor exposure.

        Weighing less than stainless steel alternatives, the aluminum construction of the 21000-28-10-20-102-01-02 simplifies handling during installation and reduces load on mounting threads. The 1.0-meter probe cable offers enough slack to reach termination points without excess coiling, striking a practical balance between too-short leads and excessive cable management.

        The 21000-28-10-20-102-01-02 Bently Nevada Proximity Probe Housing Assemblies may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

        Bently Nevada 21000-28-10-20-102-01-02 Proximity Probe Housing Assemblies 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. All prices are shown in USD.
        Bently Nevada 21000-28-10-20-102-01-02 Proximity Probe Housing Assemblies Specs

        General

        • Manufacturer GE / Bently Nevada
        • Model 21000-28-10-20-102-01-02
        • Condition New Original ready stock
        • Product Family 21000-30-10-20-102-01-02,21000-31-10-20-102-01-02
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Critical Equipment Protection: Installed in steam turbines, large compressors, centrifugal pumps, and generators for measuring axial vibration, axial displacement, or speed.
        • Online Maintenance Scenarios: When internal space is limited, or when the plant requires adjusting probe clearance or replacing damaged probes without shutting down the machine, this housing provides the necessary external operating interface.
        • Petrochemical and Power Industries: Widely used in API-compliant monitoring systems in refineries, natural gas booster stations, and power plants.
        • Probe End: Built-in 3300 XL probe (code -28), connects to the extension cable using a ClickLoc mini coaxial connector, featuring an anti-loosening locking mechanism.
        • Carrier Mounting: Uses 3/4-14 NPT mounting threads (code -02) for securing to the machine housing.
        • Connectors and Hole Diameter: Equipped with an explosion-proof connector and a plug (code -01) for easy cable passage and sealing.
        • Hazardous Area Certification: The certification options at the end of the code ensure the product complies with CSA/NRTL/C standards and is suitable for flammable and explosive environments such as Class I, Division 1/2, or Zone 0/1/2.
        • Environmental Protection: The housing meets Type 4/IP66 standards, providing excellent waterproof, dustproof, and corrosion-resistant capabilities, protecting the delicate internal probes from oil, gas, or outdoor environmental corrosion.
        • Industry Standards: Fully compliant with API 670 standards, meeting the stringent mechanical and electrical performance requirements of the global oil and chemical industry for Mechanical Protection Systems (MPS).
        View as PDF
        Description
        The 21000-28-10-20-102-01-02 is built for installations that demand both hazardous area compliance and deep probe reach. Its 10.2-inch probe penetration allows the sensing tip to reach far into thick machinery casings, while the 2.0-inch standoff adapter provides clearance for insulation layers or tool access. 

        With a 1.0-meter probe cable, the 21000-28-10-20-102-01-02 gives field technicians enough length to reach termination points without wrestling with short leads. The included explosion-proof fitting and plug simplify wiring by providing one dedicated cable entry while sealing the second port. 

        The 21000-28-10-20-102-01-02 is constructed from aluminum, making it a lightweight option for hazardous area installations where corrosion resistance is not the primary concern. It is fully compliant with API 670, the industry standard for externally mounted probe housings. 

        This housing solves the practical problem of mounting probes in equipment with thick walls or external insulation. By combining a 2.0-inch standoff with 10.2 inches of penetration, the 21000-28-10-20-102-01-02 positions the probe exactly where it needs to be without requiring custom adapters or field modifications.
        Alternative Names
        21000-30-10-20-102-01-02 21000-31-10-20-102-01-02 21000-32-10-20-102-01-02 21000-33-10-20-102-01-02
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        What applications call for the 10.2-inch probe penetration of this housing?
        Deep penetration is needed when the measurement point is far inside the machine—common in large steam turbines, thick-walled compressors, or equipment with external insulation that must be spanned.
        Why include both a standoff and deep penetration?
        The 2.0-inch standoff pushes the housing away from the casing, providing clearance for insulation or tools. The 10.2-inch penetration then ensures the probe tip still reaches the target after that offset.
        What is the advantage of the single explosion-proof fitting configuration?
        One dedicated fitting simplifies installation by giving a clear cable entry path, while the second port is pre-sealed with a plug, reducing potential leak points compared to housings with multiple unsealed openings.
        How does the aluminum construction affect this housing's suitability?
        Aluminum is lightweight and offers good corrosion resistance for many industrial settings. For more aggressive environments (e.g., offshore, chemical), the 24701 stainless steel version is available with the same dimensions.

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