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    Apter Power offers genuine, rugged Bently Nevada 31000 series stainless steel housings to safeguard your proximity sensors in highly corrosive, heavy-duty offshore areas.

31000-28-05-40-040-02-02

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The Bently Nevada 31000-28-05-40-040-02-02 Proximity Probe Housing Assembly is a protective enclosure engineered to mount proximity probes directly through machine casings.
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Technical specifications for 31000-28-05-40-040-02-02

  • Manufacturer:
    Bently Nevada
  • Part Number:
    31000-28-05-40-040-02-02
  • Product Family:
    31000 and 32000 Proximity Probe Housing Assemblies
  • Product Type:
    Proximity Probe Housing Assembly
  • Stock:
    1
  • Probe with Connector:
    3300 XL 8 mm probe, multiple approvals
  • Probe Cable Length:
    0.5 m (20 in)
  • Standoff Adapter Length:
    4.0 in
  • Probe Penetration:
    4.0 in
  • Fittings:
    Two 3/4-14 NPT fittings, one plug
  • Mounting Thread:
    3/4-14 NPT
  • Weight:
    1.2 kg
  • Estimated shipping dimensions:
    35x12x10cm
  • 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 Monitoring & Control Compatibility & Interoperability

Features:

  • Through-Case Mounting for 3300 XL 8 mm Proximity Probes with External Access
  • PPS Thermoplastic and Corrosion-Resistant Stainless Steel Construction
  • API 670 Compliant with Multiple Approvals for Hazardous Area Operation
The 31000-28-05-40-040-02-02 functions as a Proximity Probe Housing Assembly for machinery protection systems, providing secure mounting of 3300 XL 8 mm proximity probes through the machine case.The 31000-28-05-40-040-02-02 enables external access to the proximity probe and its extension cable, permitting gap adjustment or probe replacement without disassembly of the machine.

The 31000-28-05-40-040-02-02 provides essential housing functions for radially mounted transducers, and is a critical component of the vibration monitoring path, directly affecting the accuracy of the relative vibration signal when the machine casing is affixed to the bearing. One 31000-28-05-40-040-02-02 housing is required per radial probe mounting point.

For axial shaft position measurement applications, the 31000-28-05-40-040-02-02 is not recommended; housing 21022 is required instead. In addition to standard radial vibration monitoring, the 31000-28-05-40-040-02-02 configuration also supports intrinsically safe hazardous area operation when installed with an approved transducer system and appropriate I.S. barriers. The 31000-28-05-40-040-02-02 hazardous area installation executes compliance using the barrier specifications and external access design.

The 31000-28-05-40-040-02-02 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 31000-28-05-40-040-02-02 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 31000-28-05-40-040-02-02 Proximity Probe Housing Assembly Specs

General

  • Manufacturer Bently Nevada
  • Model 31000-28-05-40-040-02-02
  • Condition New Original ready stock
  • Product Family 31000-28-05-40-040-02-00,31000-28-05-40-040-02-05
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.
  • Radially Mounted Transducers: Primarily applied to house probes positioned perpendicular to a rotating shaft to measure radial vibration and absolute gap changes.
  • Keyphasor Measurements: Safely secures probes configured to detect once-per-turn timing marks on a shaft, which provides essential phase angle data for balancing and diagnostic analysis.
  • Severe Outdoor & Corrosive Environments: The non-corrosive PPS thermoplastic design makes it ideal for offshore oil platforms, chemical plants, and refineries where salt spray or chemical fumes would degrade aluminum enclosures.
  • External Maintenance Access: Enables technicians to adjust or replace internal proximity probes from outside the machine casing, eliminating the need to shut down critical machinery or open primary gearboxes.
  • Eddy Current Proximity Sensing: The enclosed 3300 XL probe utilizes an eddy current field to measure the exact displacement between the probe tip and the target surface without making physical contact.
  • Dynamic Vibration Tracking: It accurately registers high-frequency dynamic movement, catching early mechanical faults such as shaft unbalance, misalignment, and fluid-film bearing wear.
  • API 670 Machinery Protection: It fully supports compliance with API 670 standards, acting as the critical data collection point for automated emergency trip signals and preventative maintenance systems.
  • Environmental Ingress Protection: Provides an IP66 and NEMA 4X rated seal, keeping out dust, moisture, and high-pressure water jets to maintain low-voltage signal integrity.
  • Proximitor Sensor Integration: The internal 3300 XL 8 mm probe interfaces seamlessly with a standard 3300 XL Proximitor sensor via an approved extension cable.
  • Plant Monitoring Architecture: The output signals from the Proximitor are fully compatible with Bently Nevada’s 3500 Machinery Protection System and the newer Orbit 60 platform.
  • Target Material Calibration: The internal probe is factory-calibrated for standard AISI E4140 steel. Using it with other metallurgy requires specialized calibration adjustments.
  • Physical Mounting Interchangeability: The 3/4-14 NPT mounting thread standardizes installation, allowing it to directly replace older metallic styles (such as the Bently Nevada 21000 aluminum housing) without retrofitting machine casings.
Description
The Bently Nevada 31000-28-05-40-040-02-02 Proximity Probe Housing Assembly is specifically designed to address the challenge of mounting proximity probes through machine casings for radial vibration and Keyphasor measurements. This housing assembly solves the critical problem of requiring machine disassembly for probe maintenance or adjustment by providing external access to the proximity probe and its extension cable, enabling gap adjustment or probe replacement without dismantling the equipment. 

The 31000-28-05-40-040-02-02 Proximity Probe Housing Assembly is widely applied in industries such as oil and gas, power generation, petrochemical processing, and heavy machinery manufacturing, where continuous monitoring of rotating equipment is essential. It is typically utilized for radially mounted transducers in vibration monitoring systems and Keyphasor measurement applications, providing accurate relative vibration signals when the machine casing is properly affixed to the bearing. 

The 31000-28-05-40-040-02-02 housing assembly is constructed from polyphenylene sulfide (PPS), an advanced high-strength thermoplastic with excellent corrosion resistance, while other components are made of corrosion-resistant stainless steel, ensuring long-term durability in harsh operating conditions. The 31000-28-05-40-040-02-02 can be ordered with pre-installed 3300 XL Proximity Probes and a variety of conduit fittings to suit specific installation requirements.

The 31000-28-05-40-040-02-02 Proximity Probe Housing Assembly is fully compliant with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings. For upgrade and hazardous area deployment, when installed in conjunction with an approved transducer system and appropriate intrinsically safe (I.S.) barriers, the 31000-28-05-40-040-02-02 can be effectively utilized in intrinsically safe hazardous area applications, expanding its operational capabilities in explosive atmospheres while maintaining the highest safety standards.
Alternative Names
31000 28 05 40 040 02 02 31000-28-05-40-040-02-00 31000-28-05-40-040-02-05 31000-28-05-40-040-06-02 31000-28-05-40-040-03-02 31000-28-05-40-040-01-02 31000-28-05-40-040-00-02
Technical notes
The Bently Nevada 31000-28-05-40-040-02-02 proximity probe housing assembly is made of polyphenylene sulfide (PPS)—an advanced, high-strength thermoplastic material with excellent corrosion resistance—and combined with corrosion-resistant stainless steel components to ensure long-term durability in harsh working environments.
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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 31000-28-05-40-040-02-02 Proximity Probe Housing Assembly designed for?
The 31000-28-05-40-040-02-02 is designed to simplify machinery condition monitoring by providing external access to proximity probes. It allows maintenance and probe adjustments without disassembling the machine, reducing downtime and improving service efficiency.
Can the 31000-28-05-40-040-02-02 be used in hazardous locations?
Yes. When installed with an approved proximity transducer system and the appropriate intrinsically safe (I.S.) barriers, the assembly can be used in intrinsically safe hazardous-area applications.
Is the 31000-28-05-40-040-02-02 easy to integrate into existing systems?
Yes. Its externally mounted design simplifies installation and maintenance while supporting straightforward integration into existing proximity monitoring systems.