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21000-28-05-00-47-01-02

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The Bently Nevada 21000-28-05-00-47-01-02 Proximity Probe Housing Assembly is an all-metal aluminum probe housing designed to externally mount proximity probes.
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Technical specifications for 21000-28-05-00-47-01-02

  • Manufacturer:
    Bently Nevada
  • Part Number:
    21000-28-05-00-47-01-02
  • 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:
    4.7 in
  • Fittings:
    One 3/4-14 NPT explosion-proof fitting ,One 3/4-14 NPT plug
  • Mounting Thread:
    3/4-14 NPT
  • Temperature Range:
    -51°C to +177°C (-60°F to +351°F)
  • Material:
    Aluminum body with 304 stainless steel sleeve
  • Weight:
    1.1 kg
  • Estimated shipping dimensions:
    25 × 25 × 12 cm
  • 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 Operating Environment Diagnostics & Protection

Features:

  • Interface Between the Proximity Probe and 3500 Monitoring System Backplane
  • Integrates 3300 XL 8mm Probe Technology with Explosion-Proof Housing Protection
  • Functions in Conjunction with Bently Nevada Machinery Protection and Condition Monitoring Systems
The Bently Nevada 21000-28-05-00-47-01-02 Proximity Probe Housing Assembly serves as a critical external mounting solution for proximity probes within industrial monitoring infrastructures, providing robust physical protection and reliable signal transmission for vibration and position measurement applications. The 21000-28-05-00-47-01-02 continuously safeguards the internal 3300 XL 8mm proximity probe while maintaining precise detection capabilities through its 4.7 inch probe penetration depth, distributing accurate shaft position and vibration data through the probe cable to support continuous machinery health monitoring.

The 21000-28-05-00-47-01-02 provides essential probe protection functions common to demanding industrial applications, and is a critical component of the measurement path, directly affecting the proper, accurate operation of the overall condition monitoring system. One 21000-28-05-00-47-01-02 housing assembly is required per probe installation point depending on the specific machinery monitoring requirements. The 21000-28-05-00-47-01-02 occupies a dedicated external mounting position on the machinery casing and is always installed with its 3/4-14 NPT mounting thread securely fitted to the designated port.

For hazardous area applications, the 21000-28-05-00-47-01-02 requires proper installation of its explosion-proof fittings to maintain safety ratings. In addition to standard probe housing protection, the certified configuration also performs environmental sealing. The 21000-28-05-00-47-01-02 dual fitting design executes secure conduit connections using the 3/4-14 NPT explosion-proof fitting and plug specified in the housing assembly options. Using this method, the 21000-28-05-00-47-01-02 continually maintains the integrity of the internal probe environment. If the system detects that the housing seal is compromised or requires maintenance, the modular design allows for straightforward inspection and replacement of O-rings and thread seals while preserving the explosion-proof rating.

The 21000-28-05-00-47-01-02 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 21000-28-05-00-47-01-02 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 21000-28-05-00-47-01-02 Proximity Probe Housing Assembly Specs

General

  • Manufacturer Bently Nevada
  • Model 21000-28-05-00-47-01-02
  • Condition New Original ready stock
  • Product Family 21000-28-05-00-47-01-01,21000-28-05-00-47-01-04
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.
  • External Machine Mounting: Deployed to mount proximity probes externally on critical industrial machinery. It is fully compliant with the API 670 Standard for vibration, axial position, and timing measurements.
  • Rotating Machinery Monitoring: Used on large-scale rotating equipment such as steam turbines, gas turbines, compressors, pumps, and gearboxes to monitor shaft vibration and position.
  • Online Adjustments: Ideal for applications requiring sensor maintenance, calibration, or replacement during operation, eliminating the need for costly machine shutdowns.
  • Temperature Range: The probe assembly operates efficiently in extreme temperatures, supporting a range from -51 °C to +177 °C (-60 °F to +351 °F).
  • Environmental Sealing: Certified as a CSA Type 4 / NEMA 4 enclosure, ensuring high resistance against moisture, dust, and water ingress.
  • Material Composition: Features a lightweight aluminum body paired with a durable 304 stainless steel probe sleeve, balancing physical strength with reduced structural weight.
  • Hazardous Area Readiness: Built for volatile environments with official CSA and BASEEFA/CENELEC approvals. It is rated explosion-proof and intrinsically safe for Class I (Div 1 & 2, Groups C & D) and Class II (Div 1 & 2, Groups E, F, & G) hazardous locations.
  • Mechanical Protection: The rugged dome cover and body shield internal reverse-mount proximity probes from mechanical impacts, high-velocity oil splashes, and external debris.
  • Signal Integrity: Prevents environmental noise and moisture from disrupting the low-voltage eddy current signals, ensuring consistent, high-fidelity monitoring data for machine protection systems.
  • Resonance Mitigation: The system accommodates precise sleeve lengths. Long sleeves (greater than 12 inches) feature built-in structural design considerations to accept additional supports or oil seals, preventing mechanical resonance from causing measurement distortion.
Description
The Bently Nevada 21000-28-05-00-47-01-02 Proximity Probe Housing Assembly is a precision-engineered solution designed for critical rotating machinery monitoring in hazardous industrial environments. This specific 21000-28-05-00-47-01-02 configuration features a 3300 XL 8mm proximity probe with connector, offering selectable hazardous area approvals to ensure safe operation in potentially explosive atmospheres. The 21000-28-05-00-47-01-02 assembly comes equipped with a 0.5 meter (20 inch) probe cable length, providing flexible installation options while maintaining signal integrity. With a probe penetration depth of 4.7 inches and a 3/4-14 NPT mounting thread, the 21000-28-05-00-47-01-02 is specifically engineered to handle demanding shaft vibration and position monitoring applications where accurate proximity sensing is essential for predictive maintenance.

The 21000-28-05-00-47-01-02 is specifically designed to address the challenges of externally mounting proximity probes in harsh industrial conditions, solving the problem of probe protection and reliable signal transmission in environments exposed to dust, moisture, and corrosive elements. This 21000-28-05-00-47-01-02 housing assembly eliminates the risk of probe damage and signal degradation by providing a robust all-metal enclosure that safeguards the internal 3300 XL 8mm probe while ensuring consistent measurement accuracy. The 21000-28-05-00-47-01-02 configuration includes one 3/4-14 NPT explosion-proof fitting and one 3/4-14 NPT plug, delivering comprehensive sealing capabilities that prevent hazardous gas ingress and maintain the integrity of the monitoring system.

The 21000-28-05-00-47-01-02 finds extensive application across multiple critical industries including oil and gas production, petrochemical processing, power generation, pulp and paper manufacturing, and heavy industrial rotating equipment operations. In these sectors, the 21000-28-05-00-47-01-02 is commonly deployed for turbomachinery protection systems, compressor monitoring, steam and gas turbine oversight, generator bearing analysis, and pump vibration detection. The 21000-28-05-00-47-01-02 is particularly valued in hazardous area classifications where CSA-approved explosion-proof ratings are mandatory, ensuring compliance with stringent safety standards while delivering continuous machinery health data.
Alternative Names
21000 28 05 00 47 01 02 21000-28-05-00-47-01-01 21000-28-05-00-47-01-04 21000-28-05-00-47-00-02 21000-28-05-00-47-02-02 21000-28-05-00-47-03-02 21000-28-05-00-47-04-02
Technical notes
The 21000-28-05-00-47-01-02 configuration includes an integrated 3300 XL 8mm reverse-mounted proximity probe with a connector, and optional hazardous area certification. Structurally, the 21000-28-05-00-47-01-02 assembly consists of an aluminum housing, a dome cap that screws directly into the housing, a threaded port for conduit connection, an O-ring, a threaded seal, and a probe sleeve.
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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.
Why is the 21000-28-05-00-47-01-02 important in machinery monitoring systems?
The housing protects the installed proximity probe from moisture, dust, impact, and other environmental factors that could affect measurement accuracy or shorten sensor life. This helps ensure consistent monitoring performance in demanding industrial applications.
Why is explosion-proof protection important for the 21000-28-05-00-47-01-02?
Explosion-proof protection helps prevent ignition risks by containing any internal electrical faults within the enclosure. This enhances operational safety and ensures compliance with hazardous-area installation requirements.
How are electrical connections managed within the 21000-28-05-00-47-01-02?
Electrical and conduit connections are routed through threaded ports that support explosion-proof fittings and plugs. This design protects the probe cable while maintaining hazardous-area integrity.
When should users consider upgrading from the aluminum 21000-28-05-00-47-01-02 housing?
An upgrade may be appropriate when equipment operates in highly corrosive environments, such as offshore platforms, chemical processing facilities, or coastal installations where enhanced corrosion resistance is required.

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