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      Bently Nevada 21000-28-05-00-085-03-02
      · Product image is representative; revision or series may vary. Contact us to request a specific version.
      Ships by Thursday, September 17

      21000-28-05-00-085-03-02

      Proximity ProbeHousing Assemblies

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          The Bently Nevada 21000-28-05-00-085-03-02 is configured with Option 28, specifying a 3300 XL 8 mm probe with multiple hazardous-area approvals. The probe is factory-installed in the housing and is compatible with the 3300 XL proximity transducer system, providing accurate non-contact measurement of shaft vibration, shaft position, and rotor displacement.

          The Bently Nevada 21000-28-05-00-085-03-02 includes Option 05, which provides a 0.5 m (20 in) integral probe cable. Option 00 specifies no standoff adapter, allowing the housing to mount directly onto the machine casing. Option 085 provides an 8.5-inch (216 mm) probe penetration, enabling the sensing tip to be positioned correctly inside larger machine housings while maintaining the required measurement gap.

          The Bently Nevada 21000-28-05-00-085-03-02 is supplied with Option 03 fittings, including one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and one cable seal grip with interchangeable grommets for cable diameters of 1/8–3/16 inch, 1/4–5/16 inch, and 5/16–3/8 inch. Option 02 specifies the 3/4-14 NPT mounting thread, providing a rigid installation suitable for industrial rotating machinery.

          Technical specifications for 21000-28-05-00-085-03-02

          • Product Model
            21000-28-05-00-085-03-02
          • Product Parameters
            Proximity ProbeHousing Assemblies
          • Tariff Code
            8537101190
          • Country of origin
            USA
          • Place of shipment
            Xiamen,China
          • In stock
            1 unit
          • Estimated Shipping Size
            8.5x8.5x30.5cm
          • Manufacturer
            Bently Nevada
          • Weight
            1.08 kg
          • Probe with Connector
            3300 XL 8mm probe selectablehazardous area approvals
          • Probe Cable Length
            0.5 m (20 in)
          • Standoff Adapter
            No standoff adapter
          • Probe Penetration
            8.5 in (215.9 mm) = 0.85
          • Mounting Thread
            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
          • Fittings
            3/4-14 NPT
          View all additional
          Ask for Quote

          Alternative Names

          21000-28-05-00-085-03-0Z 21000-28-05-00-085-03-O2 21000-28-05-00-085-O3-02 21000-28-05-00-0B5-03-02 21000-28-05-OO-085-03-02 21000-28-O5-00-085-03-02 21000-2B-05-00-085-03-02 21000-Z8-05-00-085-03-02 2I000-28-05-00-085-03-02 21000-28-05-00-085-03-02 21000-28-05-00-085-03-04 21000-28-05-00-085-03-01 21000 28 05 00 085 03 02 21000 28 05 00 085 03 0Z 21000 28 05 00 085 03 O2 21000 28 05 00 085 O3 02 21000 28 05 00 0B5 03 02 21000 28 05 00 O85 03 02 21000 28 05 OO 085 03 02 21000 28 O5 00 085 03 02 21000 2B 05 00 085 03 02 21000 Z8 05 00 085 03 02 2I000 28 05 00 085 03 02

          Technical notes

          The Bently Nevada 21000-28-05-00-085-03-02 is commonly installed on steam turbines, gas turbines, compressors, pumps, motors, generators, and other critical rotating equipment. The 21000 Series housing complies with the external mounting practices defined by API 670 and is available in CSA-approved configurations for hazardous-area installations where required.
          SYSTEM & REPLACEMENT CHECK

          Information needed before ordering

          Three direct checks to secure your system integration and minimize ordering risks.

          Information

          Overview Manuals Application Notes Product Applications Insertion Steps

          Features:

          • Aluminum Probe Housing Assembly (21000)
          • Lightweight Aluminum Body with 304 Stainless Steel Sleeve
          • CSA Explosion-Proof Certification for Hazardous Areas
          • Flexible configuration with optional fittings
          The Bently Nevada 21000-28-05-00-085-03-02 is a complete, pre-assembled proximity probe housing assembly for external mounting of proximity probes in industrial rotating machinery applications. The 21000-28-05-00-085-03-02 consists of a dome cover that screws into the body of the housing, threaded ports for conduit connections, a probe sleeve, O-rings, a reverse mount proximity probe, a thread seal, and optional conduit fittings.

          The housing is constructed with a lightweight aluminum body and a 304 stainless steel sleeve, with a typical mass of 1.1 kg (2.4 lb) without fittings. The 21000-28-05-00-085-03-02 is equipped with a pre-installed 3300 XL 8mm probe featuring selectable hazardous area approvals, ensuring reliable signal transmission and simplifying installation

          The 21000-28-05-00-085-03-02 Bently Nevada Proximity Probe HousingAssemblies may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
          Bently Nevada 21000-28-05-00-085-03-02 Proximity Probe HousingAssemblies 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.
          In terms of safety and regulatory compliance, the 21000-28-05-00-085-03-02 carries CSA certification for explosion-proof applications in North American hazardous areas, including Class I Divisions 1 and 2 Groups C and D, Class II Divisions 1 and 2 Groups E, F, and G, and Class III locations, with Enclosure Type 4 rating. The circuit is non-incendive when connected per drawing 140979, and the housing is rated T5 at ambient temperatures from –50°C to +40°C and T4 from –50°C to +80°C. The 21000-28-05-00-085-03-02 is also fully compliant with the American Petroleum Institute's API 670 Standard for externally mounted proximity probe housings and meets RoHS Directive 2011/65/EU for environmental compliance. CA housings can only be ordered for North American End Users, while standard 21000 housings are available for all other end user countries
          • Oil Refineries: Monitors catalytic cracking compressors and high-pressure pumps
          • Petrochemical Plants: Tracks rotor vibration and axial position in ethylene/ammonia production trains
          • Power Plants: Deployed on steam, gas, and hydro turbines to prevent shaft failures
          • Offshore Platforms: Protects injection/export compressors against ocean conditions and hazardous vapors
          • LNG Facilities: Safeguards cryogenic pumps and liquefaction compression trains
          This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
          Prepare the hole: Ensure the machine case has the correct matching mounting thread (typically 3/4-14 NPT) and clear any side-view or rear-view obstructions.
          Set penetration depth: Screw the probe sleeve assembly into the machine casing to the specified 8.5-inch depth configuration, using appropriate thread seals.
          Adjust the gap: Position the reverse-mount internal probe relative to the target shaft, setting the required millivolt or voltage gap (typically -10 VDC or standard linear range midpoint for 3300 XL systems).
          Lock in place: Tighten the locknuts and thread seals to prevent loosening from machine vibration.

          Also searched as

          24701-28-05-15-026-03-02 21000-28-05-00-050-03-02 21000-28-05-15-050-03-02 24701-16-05-033-04-02 21000-28-05-00-133-04-02

          Important notice

          Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
          This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
          FREQUENTLY ASKED QUESTIONS

          Questions buyers ask about 21000-28-05-00-085-03-02

          Direct answers about identity, compatibility, stock, warranty, payment and shipping.

          • What is the difference between the -28 probe option here and the -16 option?

            While both utilize a 3300 XL 8 mm reverse mount probe, the -28 option comes with multiple global explosion-proof and intrinsically safe industrial approvals (such as ATEX, IECEx, and CSA combined), making it suitable for international facilities with strict regional electrical codes.

          • Does this assembly comply with standard safety regulations?

            Yes. The 21000 series is certified as a CSA Type 4 enclosure and is fully compliant with the American Petroleum Institute's API 670 Standard for externally mounted machine protection equipment.

          • Can the probe be replaced while the machinery is running?

            Yes. The external housing design lets you adjust the probe gap or swap out the internal probe without needing to shut down your machine or remove the bearing cover.

          • What materials are used in its construction?

            The unit features a robust, corrosion-resistant aluminum body paired with a 304 stainless steel sleeve to shield the proximity probe.
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