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      Bently Nevada 21000-34-05-00-056-04-02
      Bently Nevada 21000-34-05-00-056-04-02
      · Product image is representative; revision or series may vary. Contact us to request a specific version.
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      21000-34-05-00-056-04-02

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

      Product Information:

      The 21000-34-05-00-056-04-02 is an industrial-grade external eddy current probe housing assembly from the Bently Nevada 21000 series. As a critical mechanical protection hardware component in large rotating machinery condition monitoring systems, this assembly is designed for the safe installation, sealing, and protection of internal non-contact displacement probes from outside the equipment. Maintenance personnel can adjust the probe's measurement gap directly from the outside without disassembling the machine housing.

      The 21000-34-05-00-056-04-02 is widely used for the protection of shaft vibration, shaft displacement, and critical phase measurement points in critical industrial equipment such as steam turbines, compressors, and large water pumps. Based on Baker Hughes DAM+2 physical specifications and custom coding analysis, the assembly's body is constructed from lightweight A356.0 cast aluminum, while the internal probe sleeve is made of 304 stainless steel, combining excellent cost-effectiveness with superior structural rigidity.

      Based on its highly customized long suffix parameters, the specific configuration of the 21000-34-05-00-056-04-02 includes: a built-in explosion-proof eddy current probe with a standard 3300 XL 8mm connector protective sleeve (Option 34); a 0.5-meter (20-inch) unarmored coaxial cable (Option 05); a direct-mount design that eliminates the need for standard extension connectors (Option 00); a 5.6-inch (approximately 142.2 mm) machine penetration depth for precise contact with the shaft surface; and a fitting containing only one 3/4-14 NPT threaded plug (Option 04). The entire assembly is screwed into the measuring hole on the machine bearing housing via a 3/4-14 NPT industry-standard thread (Option 02).

      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 21000-34-05-00-056-04-02

      • Manufacturer:
        Bently Nevada
      • Product Category:
        TSI System
      • Estimated shipping dimensions:
        15.2 x 20 x 18 cm
      • Weight:
        1.2 kg
      • Tariff Code:
        8537101190
      • Country of origin:
        USA
      • Place of shipment:
        Xiamen, Fujian, China
      • Product Type:
        Proximity Probe Housing Assemblies
      • Category Series:
        21000, 24701, and 164818 Proximity Probe Housing Assemblies
      • Probe with Connector:
        3300 XL 8mm probe with connector protector, selectable hazardous area approvals
      • Probe Cable Length:
        0.5 m (20 in)
      • Standoff Adapter (Option C Dimension):
        No standoff adapter
      • Probe Penetration (Option D Dimension):
        5.6 in (142.24 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
      • Stock:
        100
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      Alternative Names

      210003405000560402 21000 34 05 00 056 04 02 2I000-34-05-00-056-04-02 21000-3A-05-00-056-0A-02 21OOO-34-O5-OO-O56-O4-O2 21000-34-05-00-056-04-01 21000-34-05-00-056-04-04 21000-34-05-00-056-04-CN 21000-34-05-00-056-04-BR 21000-34-05-00-056-04-RU 21000-34-05-00-056-04-US 21OOO-34-O5-OO-O56-O4-O1 21OOO-34-O5-OO-O56-O4-O4

      Information

      Overview Manuals Basic Info Components Interconnection and Application Standards

      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 21000-34-05-00-056-04-02 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 21000-34-05-00-056-04-02 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: 21000-34-05-00-056-04-02
      • 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
      In security monitoring networks, this protective enclosure assembly comes pre-installed with complete sealing O-rings and threaded seals, providing comprehensive environmental protection for the internal probes. It not only achieves CSA Type 4 high-level all-weatherproof and dustproof protection, but also possesses CSA/ATEX hazardous area explosion-proof certification in certain configurations, and fully complies with the stringent technical specifications of the American Petroleum Institute API 670 standard for externally mounted probe housings. The cable leading from this assembly ultimately connects to the 3300 XL extension cable and preamplifier, and is integrated into the Bently Nevada 3500 mechanical protection system. In heavy industrial sites such as petrochemical, power, and metallurgical industries, it provides an absolutely safe and stable underlying data sensing channel for harsh conditions involving high temperatures, oil contamination, and flammable and explosive environments.

      Manuals

      Technical notes

      The 21000-34-05-00-056-04-02 is the all-metal protective housing assembly for the Bently Nevada 21000 series external eddy current probe. Its main body is made of aluminum alloy (lined with a 304 stainless steel sleeve), and the overall design fully complies with API 670 standards and achieves CSA Type 4 industrial protection rating, providing dustproof, waterproof, and explosion-proof performance. Specific hardware and configuration parameters are as follows: 3300 XL 8 mm reverse-mount eddy current probe with built-in connector protector (-34); probe cable length 0.5 meters (-05); extension gasket/bracket adapter not included (-00); probe penetration depth provided by the sleeve is 5.6 inches (-056). The electrical interface accessory is a 3/4-14 NPT threaded plug (-04), and the entire assembly is directly secured to the machine housing via a bottom connection... The 3/4-14 NPT thread (-02) provides robust and reliable physical and electrical sealing protection for internal probes used to accurately measure the vibration and displacement of large rotating machinery shafts in harsh environments, including hazardous areas.

      • Product Lifecycle Stage

        Obsolete/Discontinued by OEM

        The Bently Nevada 21000-34-05-00-056-04-02 is discontinued and belongs to the earlier 7200 series proximity sensor product line. The recommended alternative is the Bently Nevada 3300 XL 8 mm proximity sensor system, which offers higher measurement accuracy, greater environmental adaptability, and a longer product support cycle. Moore Automated offers high-quality Bently Nevada replacement modules and spare parts, including compatible 3300 XL 8 mm proximity sensor system assemblies for legacy applications. Our reliable solutions help reduce unplanned downtime, extend equipment life, and ensure the continuous operation of critical rotating machinery.

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      FAQ

      View All Faqs
      • How does the 21000-34-05-00-056-04-02 achieve excellent measurement accuracy and linearity?
        The 21000-34-05-00-056-04-02 employs advanced eddy current sensing technology, equipped with a precision-designed probe coil and factory-calibrated electronics. This design ensures excellent linearity, low thermal drift, and highly repeatable displacement measurements throughout the entire calibration operating range.
      • What is the output sensitivity of the 21000-34-05-00-056-04-02 probe after integration into a compatible sensor system?
        When connected to a specified compatible signal conditioner, the 21000-34-05-00-056-04-02 probe's calibration system sensitivity is typically 200 mV/mil (7.87 V/mm), enabling high-precision detection of minute axial displacements and amplitudes.
      • How does the 21000-34-05-00-056-04-02 maintain signal integrity in harsh industrial environments?
        The 21000-34-05-00-056-04-02 utilizes a low-capacitance coaxial cable construction, precision shielding, and optimized impedance characteristics to minimize electromagnetic interference (EMI), radio frequency interference (RFI), signal attenuation, and electrical noise during high-frequency signal transmission.
      • Which rotating machinery applications are best suited for the 21000-34-05-00-056-04-02 type probe?
        The 21000-34-05-00-056-04-02 type probe is widely used in equipment such as steam turbines, gas turbines, centrifugal compressors, electric motors, generators, pumps, fans, blowers, expanders, and industrial gearboxes. In these applications, continuous monitoring of shaft vibration and displacement is crucial for equipment protection.
      • How does the 21000-34-05-00-056-04-02 type probe support predictive maintenance and mechanical diagnostics?
        The 21000-34-05-00-056-04-02 type probe continuously monitors the dynamic characteristics of the shaft, thereby detecting problems such as rotor imbalance, shaft misalignment, bearing wear, mechanical loosening, shaft eccentricity, oil film whirl, oil film whipping, and shaft friction early on. These diagnostic functions can significantly reduce unplanned downtime and improve maintenance planning.
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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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