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      Bently Nevada 21000-28-05-40-026-04-02
      Bently Nevada 21000-28-05-40-026-04-02
      · Product image is representative; revision or series may vary. Contact us to request a specific version.
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      21000-28-05-40-026-04-02

      Proximity Probe Housing Assemblies
      In Stock
      Ships by Friday, August 7
      Fast Shipping Available

      Product Information:

      The 21000-28-05-40-026-04-02 is a Bently Nevada 21000 series aluminum external eddy current probe housing assembly. As a critical protective hardware component for large rotating machinery such as steam turbines and compressors, it features a high-strength aluminum housing and a 304 stainless steel probe sleeve, fully complying with the stringent requirements of the American Petroleum Institute (API) 670 standard for externally mounted probe housings.

      The 21000-28-05-40-026-04-02 allows field engineers to directly adjust, maintain, or replace the internal eddy current probe clearance from the outside without disassembling the machinery or stopping its operation, significantly improving operational efficiency in industrial environments. For industrial field deployment and protection, this hardware has achieved Canadian Standards Association (CSA) Type 4 (equivalent to IP66) waterproof and dustproof fully sealed certification, enabling it to operate for extended periods in harsh outdoor environments, such as heavy rain, dust, and strong water splashes, without damage to the probe connector due to moisture.

      Because the 21000-28-05-40-026-04-02 integrates an explosion-proof probe (28 options) and a robust explosion-proof metal housing, it is widely used in Class I Zone 1 or Zone 0/1 hazardous areas where flammable and explosive gases are present, such as petrochemical plants, natural gas pipelines and thermal power plants.

      Warranty Policy
      We provide 1-year warranty for all remaining parts.
      The warranty period is 1-year warranty 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 1-year warranty 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 Methods
      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
      Moore Automated offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
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      Technical specifications for 21000-28-05-40-026-04-02

      • Manufacturer:
        Bently Nevada
      • Product Category:
        TSI System
      • Estimated shipping dimensions:
        67 x 1.5 x 10 cm
      • Weight:
        0.35 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 (Option C Dimension):
        4.0 in (101.6 mm)
      • Probe Penetration (Option D Dimension):
        2.6 in (66 mm)
      • Fittings:
        One 3/4-14 NPT plug only
      • Mounting Thread:
        3/4-14 NPT
      • Operating and storage:
        -51°C to +177°C (-60°F to +351°F)
      • Material:
        Aluminum body with 304 stainless steel sleeve
      • Product Type:
        Proximity Probe Housing Assemblies
      • Category Series:
        21000, 24701, and 164818 Proximity Probe Housing Assemblies
      • Stock:
        110
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      Alternative Names

      21000-28-05-40-026-04-01 21000-28-05-40-026-04-04 21000-28-05-40-026-04-CN 2I000-28-05-40-026-04-02 21OOO-28-O5-4O-O26-O4-O2 21000 28 05 40 026 04 02 21000-28-05-40-026-00-02 21000-28-05-40-026-01-02 21000-28-05-40-026-02-02 21000-28-05-40-026-03-02 21000-34-05-15-029-04-02 21000-34-05-15-029-04-01 21000-34-05-15-029-02-CN

      Information

      Overview Manuals Basic Info Instruction info Application Details

      Features:

      • Proximity Probe Housing Assemblies
      • Aluminum body with 304 stainless steel sleeve
      • 21000, 24701, and 164818 Proximity Probe Housing Assemblies
      The 21000 and 24701 Proximity Probe Housing Assemblies are available with Canadian Standards Association (CSA) approvals. They are rated explosion proof for hazardous areas. Bently Nevada offers a probe support and oil seal (part number 37948-01) for long sleeves that must go through an inner bearing housing.

      To externally mount proximity probes, use one of these allmetal Proximity Probe Housing Assemblies: 21000 aluminum probe housing assembly; 24701 stainless steel probe housing assembly The 21000 and 24701 Proximity Probe Housing Assemblies consist of the following parts:A dome cover that screws into the body of the housing; Threaded ports for conduit connections; A probe sleeve of optional length; 0-rings; A reverse mount proximity probe; A thread seal; Optional conduit fittings; An optional standoff adapter.

      The 21000-28-05-40-026-04-02 Bently Nevada Proximity Probe Housing Assemblies may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
      Bently Nevada 21000-28-05-40-026-04-02 Proximity Probe Housing Assemblies Manuals(Datasheets), 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.
      • Model: 21000-28-05-40-026-04-02
      • Warranty: One-year warranty
      • Condition: Brand new, original, in stock
      • Product Family: 21000, 24701, and 164818 Proximity Probe Housing Assemblies
      Proximity Probe Housing Assemblies
      21000-Axx-Bxx-Cxx-Dxxx-Exx-Fxx

      A: Probe with Connector
      00: Probe not required
      14: 420 nuclear
      16: 3300 XL 8mm probe
      26: 3300 XL NSv probe
      27: 3300 XL NSv probe, selectable hazardous area approvals
      28: 3300 XL 8mm probe, selectable hazardous area approvals
      29: 3300 XL 11mm probe
      30: 3300 XL 11mm probe, selectable hazardous area approvals
      31: 3300 XL NSv probe with connector protector
      32: 3300 XL NSv probe with connector protector, selectable hazardous area approvals
      33: 3300 XL 8mm probe with connector protector
      34: 3300 XL 8mm probe with connector protector, selectable hazardous area approvals
      35: 3300 XL 11mm probe with connector protector
      36: 3300 XL 11mm probe with connector protector, selectable hazardous area approvals
      37: 3300 XL 8mm probe, ETR, selectable hazardous area approvals (available for 21000 only)
       
      B: Probe Cable Length
      00: Probe cable not required
      05: 0.5 m (20 in)
      10: 1.0 m (39 in)
      12: 12.0 in
      18: 18.0 in
      24: 24.0 in
      30: 30.0 in
      36: 36.0 in
       
      C: Standoff Adapter (Option C Dimension)
      15: Minimum length 1.5 in (38 mm)
      75: Maximum length 7.5 in (191 mm)
      Examples
      1.5 in (38 mm) = 15
      No standoff adapter = 00
       
      D: Probe Penetration (Option D Dimension)
      10: Minimum length 1.0 in (25.4 mm)
      Examples
      3.7 in (94 mm) = 037
      22.4 in (569 mm) = 224
       
      E: Fittings
      00: Without fittings
      01: One 3/4-14 NPT explosion-proof fitting; One 3/4-14 NPT plug
      02: Two 3/4-14 NPT explosion-proof fittings
      03: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
      04: One 3/4-14 NPT plug only
       
      F: Mounting Thread
      01: As cast without threads
      02: 3/4-14 NPT
      04: 1/2-14 BSP
      Petrochemical refineries and natural gas plants: Ideal for hazardous process areas (Class I, Zone 1/Zone 0) as their enclosures serve as physical explosion-proof boundaries. Typically installed on heavy-duty hydrocarbon process pumps, gas fractionators, and high-pressure blowers.
       
      Coal-fired and hydroelectric power plants: Bolted to large steam turbine generator sets or large induced draft fans. In these locations, continuous availability of equipment is critical; unplanned downtime due to internal sensor replacements can result in millions of dollars in losses.
       
      Natural gas pipeline skid-mounted equipment: Deployed on long-haul natural gas compressor units to protect internal hydrodynamic bearings from deterioration, imbalance, or structural misalignment.

      Manuals

      Technical notes

      The Bentley Nevada 21000-28-05-40-026-04-02 is an explosion-proof external mounting protective sleeve assembly for eddy current sensors. It features an aluminum housing and a 304 stainless steel probe sleeve, accommodates a 3300 XL 8mm reverse-mount probe, and includes a 4.0-inch extension adapter and a 2.6-inch probe insertion length. This assembly is designed to provide robust physical protection and sealing for displacement and vibration measurement systems in harsh industrial environments.

      • Product Lifecycle Stage

        Obsolete/Discontinued by OEM

        Moore Automated continues to provide high-quality Bently Nevada replacement modules and spare parts for legacy industrial applications. Our solutions help reduce unplanned downtime, improve maintenance efficiency, and ensure continuous and stable system operation.

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      FAQ

      View All Faqs
      • How to achieve a high-precision industrial sensing and signal conditioning architecture to deliver deterministic monitoring performance in critical rotating machinery environments?
        The 21000-28-05-40-026-04-02 is a high-reliability industrial monitoring component designed for precision data acquisition in rotating machinery systems. It integrates an advanced sensing architecture and robust signal conditioning path to ensure deterministic measurement stability under harsh operating conditions.
      • Why is the 21000-28-05-40-026-04-02 considered a key component of high-integrity industrial automation and machinery protection systems?
        The 21000-28-05-40-026-04-02 ensures stable operational feedback for industrial protection systems, enabling early anomaly detection, system-level fault isolation, and predictive maintenance optimization for high-value rotating equipment.
      • How does the 21000-28-05-40-026-04-02 maintain signal fidelity and measurement accuracy under conditions of strong electromagnetic interference and mechanical stress?
        The 21000-28-05-40-026-04-02 employs industrial-grade shielding, precision calibration algorithms, and noise-resistant signal paths to maintain measurement integrity in environments with high electromagnetic interference and high vibration.
      • Which engineering parameters of the 21000-28-05-40-026-04-02, including the configuration index (28-05-40-026-04-02), sensor resolution class, calibration factor, interface protocol compatibility, and thermal operating range, should be evaluated?
        A detailed datasheet review of the 21000-28-05-40-026-04-02 helps engineers verify its system compatibility, calibration accuracy, environmental tolerance, and integration limitations within industrial automation architectures.
      • How can the 21000-28-05-40-026-04-02 enhance predictive maintenance strategies through continuous real-time status data acquisition and system diagnostics?
        The 21000-28-05-40-026-04-02 supports continuous monitoring and diagnostic feedback, enabling condition-based maintenance strategies, reducing downtime, and improving equipment reliability.
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      Moore Disclaimer: Moore Automated's sales automation equipment and related solutions are intended for industrial automation and business operational efficiency improvement purposes only. Product information, technical parameters, and application cases are for reference only and do not constitute an absolute guarantee of performance for any specific industry, scenario, or final application. Actual equipment performance may vary depending on factors such as the usage environment, system integration method, and maintenance conditions. Users should confirm compatibility and safety based on professional technical assessments. Moore Automated assumes no liability for any direct or indirect losses caused by improper use, modification, or failure to operate according to specifications, to the extent permitted by law.
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