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      Proximity probe

      21500-00-32-10-00

      Product Information:

      The 21500-00-32-10-00 is a proximity probe featuring a 3/8-24 UNF imperial thread and belonging to an early classic series. It serves as the front-end, non-contact sensing element in eddy-current sensor systems, primarily used to measure shaft vibration, shaft displacement, or Keyphasor speed signals in small- to medium-sized rotating machinery.

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        • PRODUCT OVERVIEW

          What is this product?

          The Bently Nevada 21500-00-32-10-00 is a 7200 Series 5 mm proximity probe, utilizing Bently Nevada's legacy eddy-current proximity sensor technology designed for non-contact measurement on rotating machinery. The 7200 proximity sensor system measures the static and dynamic distance between the probe tip and a conductive target, making it suitable for monitoring shaft relative displacement and vibration. Bently Nevada specifies these proximity probe systems for condition monitoring of machinery with medium to high criticality; when integrated with an appropriate monitoring system, they can also facilitate automatic machinery protection or shutdown functions.

          Source boundary

          Exact-model hardware values shown here are qualified from public technical cross-references and require order-stage confirmation.
        • APPLICATIONS

          Where it may be used

          Applications describe the product family and are not an automatic compatibility or functional-safety approval.

          Oil & Gas

          Used within rotating-equipment monitoring systems to measure non-contact shaft movement and vibration on critical machinery such as compressors and pumps.

          Power Generation

          Applicable to rotating machinery where continuous shaft-relative vibration or displacement information is required for machinery condition monitoring and protection.

          Process Plants

          Can support proximity-based measurement on fluid-film-bearing machinery where static shaft position and dynamic vibration data are required.

          Compressor Systems

          Proximity probes can be used for shaft and piston-related condition monitoring in reciprocating-compressor applications, including measurements associated with rod position and vibration.
      Technical specifications for

      21500-00-32-10-00

      0 TECHNICAL PARAMETERS
      • Manufacturer:
        Bently Nevada
      • Product Category:
        Probes
      • DIAMETER:
        5 mm
      • CONFIGURATION TYPE:
        Standard
      • THREADS:
        1/4-28
      • LEAD ARMOR:
        No
      • Unthreaded Length:
        0.0 in
      • Overall Case Length:
        3.2 inches
      • Total Length:
        1.0 metre (39 inches)
      • Connector:
        Without connector
      • Stock Availability:
        1
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      Alternative Names

      2150000321000 21500 00 32 10 00

      Information

      Overview Manuals Machinery Monitoring Role Replacement Engineering

      Features:

      • Designed for the established Bently Nevada 7200 proximity-transducer platform.
      • Uses eddy-current proximity measurement for shaft-relative machine monitoring.
      • Requires compatible electronics and cabling to establish the complete measurement chain.
      The Bently Nevada 21500-00-32-10-00 is a legacy proximity probe associated with the 7200 Series 5 mm and 8 mm proximity transducer family. Bently Nevada describes the 7200 technology as a non-contacting, gap-to-voltage transducer system that measures static and dynamic distance between the probe tip and the observed conductive target. This measurement principle is used for machinery condition monitoring where shaft-relative movement must be detected without physical contact.

      The probe forms only one part of the complete proximity measurement system. Bently Nevada's technical guidance emphasizes the importance of maintaining compatible probe, cable, and Proximitor combinations and specifically recommends using genuine Bently Nevada components within a matched system rather than mixing eddy-current components from different manufacturers.

      The 21500-00-32-10-00 Bently Nevada 7200 Series 5 mm Proximity Probe may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
      Bently Nevada 21500-00-32-10-00 7200 Series 5 mm Proximity Probe 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.
      Within a compatible 7200 system, proximity measurements can be used for shaft-relative displacement and vibration monitoring. Bently Nevada's current proximity-sensor documentation describes proximity systems as suitable for rotor shaft position and vibration measurement within fluid-film bearing clearances.
      When replacing a 21500-00-32-10-00, verify the original installed 7200 system, mating electronics, cable arrangement, mounting dimensions, probe gap, target material, and monitoring-channel requirements. A visually similar modern probe should not be selected solely by probe diameter or thread size.

      Technical notes

      The specifications for this model are clearly defined: "21500" designates the base series of imperial-standard mounting probes with a tip diameter of 0.300 inches (approx. 8 mm); the first suffix "-00" indicates an unthreaded tip length of 0 inches (i.e., a fully threaded design); "-32" specifies a total length of 3.2 inches for the threaded stainless steel housing; the core suffix "-10" denotes an integrated cable with a factory-set electrical length of 1.0 meter (39 inches); and the final suffix "-00" signifies the basic configuration—featuring a standard flexible-jacket cable without armor and carrying no hazardous area agency approvals—making it suitable for safe, non-hazardous areas within a plant.

      Non-Contact Displacement Detection

      The Bently Nevada 21500-00-32-10-00 belongs to the legacy 7200 Series proximity-probe system, a Bently Nevada eddy-current measurement technology used for non-contact measurement between a probe tip and a conductive machine target. Within a compatible 7200 transducer system, proximity measurement can provide information on shaft-relative position and dynamic vibration for machinery condition monitoring. Bently Nevada's current technical material continues to identify the 7200 family as a distinct proximity-system family alongside its newer 3300 XL systems.

      Matched Transducer-System Operation

      The 21500 probe is not an independent measuring instrument; it operates as part of a compatible Bently Nevada proximity transducer chain consisting of the probe, associated cabling, signal-conditioning electronics, and monitoring equipment. Bently Nevada emphasizes that proximity probes, cables, and Proximitor sensors must be properly matched as a system and warns against mixing components from different manufacturers because electrical characteristics and measurement accuracy can be affected.

      Customs & shipping dimensions / weight

      • Packed shipping dimensions
        Confirmed after final packing
        Exact product dimensions are not stated in the reviewed model-specific source.
      • Packed shipping weight
        Confirmed after final packing
        Exact product dimensions are not stated in the reviewed model-specific source.
      • HS / customs code
        Not officially confirmed
        Verify the applicable code for the destination before shipment.
      • Country of origin
        USA
        Verify from the item nameplate or COO.
      • Ships from
        Xiamen, Fujian, China
        Dispatch location is confirmed in the written quotation.
      • Customs documents
        Confirmed for the destination
        Available document scope is stated in the written quotation.
      PRODUCT & ORDER FAQS

      Questions buyers ask about 21500-00-32-10-00

      • How should the 21500-00-32-10-00 be identified for a replacement order?

        The 21500-00-32-10-00 is a Bently Nevada 7200 Series 5 mm proximity probe. The complete part number is important because the 7200 family contains multiple 21500 configurations with different mechanical and system arrangements. When ordering a replacement, the full 21500-00-32-10-00 identification should be retained rather than shortening it to “21500” or “21500 5 mm.” The installed nameplate and associated system documentation should be used to confirm the exact execution.

      • What equipment is this legacy 5 mm probe intended to operate with?

        The 21500 belongs to the 7200 Series proximity transducer system, which uses non-contact measurement of the distance between the probe tip and the observed target. Compatibility must be considered across the complete measurement chain, including the probe, associated cable, oscillator-demodulator/Proximitor electronics, and monitor input. A modern 3300 XL probe should not be substituted directly into an existing 7200 channel without an approved migration or interchangeability arrangement.

      • Where would a 21500 5 mm proximity probe normally be applied?

        The 7200 proximity system is intended for non-contact displacement measurement on rotating machinery, including measurement of shaft-relative motion. A 5 mm probe configuration can be used where the existing machinery-monitoring design specifically calls for the 7200 5 mm transducer system. For an existing plant installation, the application should be confirmed from the original machinery drawing and monitor channel rather than selecting a 21500 solely because the probe diameter is 5 mm

      • What needs to be checked before installing this particular 21500?

        For this legacy configuration, verify the complete part number, mounting arrangement, probe location, target geometry, cable routing, connector condition, matched electronics, and required probe gap before installation. The most important point is that the probe should remain compatible with the original 7200 measurement chain. If the installed nameplate is unclear, clear photographs of the probe and its identification marking can be supplied for configuration checking before purchase.

      • Is the 21500-00-32-10-00 still an active Bently Nevada product?

        The 21500/7200 5 mm family is a legacy product line, and current market references identify comparable 21500 configurations as discontinued by the manufacturer. This does not automatically mean that an unused original unit cannot be supplied. Moore Automated specializes in sourcing legacy and obsolete industrial spare parts, so availability should be checked against the complete 21500-00-32-10-00 identification.

      • If the OEM has discontinued it, can Moore Automated still provide a new original unit?

        Yes. Moore Automated supplies new and original products with a one-year warranty. For legacy products such as the 21500 series, previously purchased inventory may remain unused in warehouse storage. We can also provide actual product photographs and available technical manuals so the customer can compare the physical probe, identification marking, connector arrangement, and configuration before purchase.

      • What documentation can accompany the 21500, and can you check the price?

        Available supplier documentation includes COO, COC, test reports, and a warranty letter. For applicable Bently Nevada products, Moore Automated can also provide available COO, DOC, COC, testing, and calibration certificates, with requested documents packed together with the shipment when available. If you are ready to purchase this exact legacy configuration, we can check for a special discount. Sending us your target price allows us to apply for a discount more efficiently.

      • How will this obsolete probe be shipped, and are you an authorized Bently Nevada agent?

        DHL and FedEx door-to-door delivery are supported. Moore Automated is not a Bently Nevada authorized agent, but we supply the same branded products through our sourcing channels. Before dispatch, we can confirm the complete 21500-00-32-10-00 part number and provide available photographs and documentation. For an obsolete 7200-series item, this full configuration verification is particularly important because similar-looking 21500 probes are not necessarily interchangeable.
      All FAQ
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          • Product Lifecycle Stage

            Obsolete/Discontinued by OEM

            For replacement planning, the appropriate modernization path should be selected from the current Bently Nevada proximity-system family based on probe diameter, mounting arrangement, electrical system length, target geometry, monitoring electronics, and required approvals. A 3300 XL probe should not be treated as a direct plug-in replacement without confirming the complete system migration requirements. Bently Nevada itself stresses that probe, cable, and Proximitor components must form a compatible system.

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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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