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    Apter Power provides genuine Bently Nevada probe housings to protect proximity transducers and ensure reliable vibration monitoring in harsh and hazardous industrial environments.

21000-28-05-00-130-04-02

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The Bently Nevada 21000-28-05-00-130-04-02 Proximity Probe Housing Assembly is a comprehensive, all-metal aluminum probe housing assembly engineered specifically for external proximity probe mounting.
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Technical specifications for 21000-28-05-00-130-04-02

  • Manufacturer:
    Bently Nevada
  • Part Number:
    21000-28-05-00-130-04-02
  • Product Family:
    21000, 24701, and 164818 Proximity Probe Housing A
  • Product Type:
    Proximity Probe Housing Assembly
  • Stock:
    1
  • Probe with Connector:
    3300 XL 8mm probe, selectable hazardous area approvals
  • Probe Cable Length:
    0.5 m (20 in)
  • Standoff Adapter:
    No standoff adapter
  • Probe Penetration:
    13.0 in
  • Fittings:
    One 3/4-14 NPT plug only
  • Mounting Thread:
    3/4-14 NPT
  • Weight:
    1.05 kg
  • Estimated shipping dimensions:
    30.5x8.5x8.5cm
  • Tariff Code:
    8537101190
  • 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 Use Cases Configuration & Programming Certifications & Standards

Features:

  • External Housing Protection for Machine Casing Mounts with CSA Explosion-Proof Rating
  • Houses 3300 XL 8mm Reverse Mount Probe with 0.5m Cable and 13.0-Inch Sleeve Penetration
  • Features All-Aluminum Construction with 3/4-14 NPT Mounting Thread and Plug Fitting
The Bently Nevada 21000-28-05-00-130-04-02 Proximity Probe Housing Assembly serves as an all-metal external protective enclosure designed to securely accommodate proximity sensors mounted on industrial machinery. The aluminum body, combined with its threaded dome cover, O-rings, and thread seal, seals the internal sensor components and cable connections against environmental elements while enabling physical vibration and displacement measurements.

The 21000-28-05-00-130-04-02 performs vital protective functions for the transducer system, serving as a key hardware component that directly enables safe and accurate proximity monitoring in hazardous areas. It carries Canadian Standards Association (CSA) approvals, certifying it as explosion-proof for hazardous locations. The entire assembly secures directly to the machine via a 3/4-14 NPT mounting thread and includes one 3/4-14 NPT plug with no standoff adapter configured.

For external mounting applications, the 21000-28-05-00-130-04-02 assembly facilitates sensor installation and maintenance without requiring complete disassembly of the machine housing. During operation or routine inspection, technicians can access the internal 3300 XL 8mm reverse mount probe and perform gap adjustments directly through the sleeve assembly. The threaded conduit ports and supplied 3/4-14 NPT plug ensure that the enclosure maintains its structural integrity and explosion-proof sealing around the probe's cable connection.

The 21000-28-05-00-130-04-02 Bently Nevada Proximity Probe Housing Assembly may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 21000-28-05-00-130-04-02 Proximity Probe Housing Assembly 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.
Bently Nevada 21000-28-05-00-130-04-02 Proximity Probe Housing Assembly Specs

General

  • Manufacturer Bently Nevada
  • Model 21000-28-05-00-130-04-02
  • Condition New Original ready stock
  • Product Family 21000-28-05-00-130-04-01,21000-28-05-00-130-04-04
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.
  • Machine Components Monitored: It is installed on steam turbines, gas turbines, centrifugal compressors, large industrial pumps, and gearboxes.
  • Vibration and Position Tracking: The housing preserves precise target-to-shaft gap settings required to monitor radial vibration, axial thrust position, and shaft speed.
  • External Maintenance Access: It allows engineers external access to the proximity probe and its extension cable. This permits routine gap adjustments or complete probe replacements without requiring the disassembly of the machine, minimizing plant downtime.
  • Mechanical Gap Adjustment: Calibration is performed by manually rotating the probe within its reverse-mount sleeve. Technicians monitor the voltage output using a digital multimeter or a calibration instrument to match the correct DC bias voltage (typically -10 VDC for a centered gap).
  • Sleeve Structural Support: Because this configuration dictates a long 13.0-inch penetration depth (exceeding 12 inches), it requires additional internal structural sleeve support to reduce the vibration associated with unsupported long sleeve lengths.
  • Transducer System Pairing: The 3300 XL 8 mm probe must be wired back to its paired 3300 XL Proximitor Sensor. Any digital programming is conducted on the downstream machinery protection monitor (such as the Bently Nevada 3500 series rack), where users configure alert/trip setpoints and input scale factors.
  • API 670 Compliance: Both housings are certified as CSA Type 4 enclosures and are fully compliant with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings.
  • Hazardous Area Approvals: The suffix code "-28" specifies a probe bundle carrying multiple international agency certifications. The housing assembly itself is rated explosion-proof for Class I, II, and III, Divisions 1 and 2 locations under Canadian Standards Association (CSA) guidelines.
  • Environmental Sealing: The enclosure is certified to CSA Type 4 / IP66 ratings, ensuring it is fully dust-tight and rainproof against high-pressure water spray from any direction.
  • Material Compliance: The assembly adheres to the RoHS Directive for hazardous materials restriction.
Description
The Bently Nevada 21000-28-05-00-130-04-02 Proximity Probe Housing Assembly is an all-metal, aluminum-based external probe housing system designed specifically to address the challenge of securely housing and protecting delicate machinery monitoring sensors in harsh industrial environments. By providing a rugged enclosure for reverse-mount proximity probes, it solves the problem of exposing fragile transducer systems to extreme pressures, mechanical stress, and volatile process conditions, ensuring reliable and continuous vibration and displacement measurements.

This 21000-28-05-00-130-04-02 assembly is ideally suited for critical rotating machinery in heavy industrial fields such as power generation, oil and gas, petrochemical processing, and large manufacturing plants. Typical application scenarios include monitoring the vibration, axial position, and speed of high-speed steam turbines, centrifugal compressors, large pumps, and gas turbines. In these demanding environments, the 21000-28-05-00-130-04-02 unit protects internal components from corrosive elements and explosive atmospheres, backed by Canadian Standards Association (CSA) explosion-proof hazardous area ratings.

Regarding installation and system integration, the 21000-28-05-00-130-04-02 assembly consists of an aluminum body with a threaded dome cover that screws securely into place, threaded ports for robust conduit connections, a probe sleeve providing the 13.0-inch penetration, O-rings, a thread seal, and the specified 3/4-14 NPT mounting thread and plug fitting. It is engineered for external mounting directly onto machine casings or bearing housings. This setup allows technicians to perform essential probe gap adjustments and maintenance tasks on the 3300 XL 8mm probe and its 0.5 m cable connection without requiring complete disassembly of the machine casing.
Alternative Names
21000 28 05 00 130 04 02 21000-28-05-00-130-04-01 21000-28-05-00-130-04-04 21000-28-05-00-130-00-02 21000-28-05-00-130-01-02 21000-28-05-00-130-02-02 21000-28-05-00-130-03-02
Technical notes
The Bently Nevada 21000-28-05-00-130-04-02 component integrates a reverse-mounted 3300 XL 8mm probe with a miniature coaxial connector and optional compliance with hazardous area certification standards, meeting stringent safety certification requirements for explosion-proof environments such as those from the Canadian Standards Association (CSA).
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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.
What is the Bently Nevada 21000-28-05-00-130-04-02 used for?
The 21000-28-05-00-130-04-02 is a proximity probe housing assembly designed to protect proximity probes while supporting accurate vibration and position monitoring on rotating machinery.
What are the main components of the 21000-28-05-00-130-04-02?
The assembly includes a dome cover, housing body, probe sleeve, O-rings, thread seal, conduit connection, and a 3/4-14 NPT mounting thread for secure installation.
What problems does the 21000-28-05-00-130-04-02 help solve?
It protects proximity probes from moisture, dust, vibration, mechanical impact, and other harsh environmental conditions while helping maintain reliable signal transmission.

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