Bently Nevada 31000-28-05-00-056-01-02
Bently Nevada 31000-28-05-00-056-01-02
Bently Nevada 31000-28-05-00-056-01-02
Bently Nevada 31000-28-05-00-056-01-02
Bently Nevada 31000-28-05-00-056-01-02
Bently Nevada 31000-28-05-00-056-01-02
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31000-28-05-00-056-01-02

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The 31000-28-05-00-056-01-02 is a Bently Nevada 31000 proximity probe housing assembly with a 3300 XL 8mm probe, 0.5m cable, 3/4-14 NPT fitting, and API 670 compliance.
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Technical specifications for 31000-28-05-00-056-01-02

  • Manufacturer:
    Bently Nevada
  • Part Number:
    31000-28-05-00-056-01-02
  • Product Family:
    31000 and 32000 Proximity Probe Housing Assemblies
  • Product Type:
    Proximity Probe Housing Assemblies
  • Probe Cable Length:
    0.5 m (20 in)
  • Standoff Adapter Length:
    None (00)
  • Probe Penetration:
    5.6 inches
  • Fittings:
    One 3/4-14 NPT fitting, two plugs
  • Mounting Thread:
    3/4-14 NPT
  • API Compliance:
    API 670 Standard for externally mounted proximity probe housings
  • Weight:
    1.5 kg
  • Estimated shipping dimensions:
    37x9x8cm
  • Tariff Code:
    8479899990
  • 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 Application Operating Environment Monitoring and Control

Features:

  • Allows gap adjustment and probe replacement through the housing without dismantling the machine case; reduces maintenance downtime.
  • Fully meets American Petroleum Institute Standard 670 for externally mounted proximity probe housings; suitable for refinery and petrochemical applications.
  • Housing made of PPS (polyphenylene sulfide) thermoplastic; fittings made of stainless steel; excellent resistance to harsh industrial environments.
The 31000-28-05-00-056-01-02 is designed for turbomachinery where access to the shaft for vibration monitoring is through the machine casing. Traditionally, if a proximity probe failed or required gap adjustment, the machine casing would need to be partially disassembled – a costly and time-consuming process. This housing solves that problem. It mounts through a threaded port in the casing and provides external access to the probe and its extension cable. The technician can remove the probe, inspect it, adjust the gap by turning the housing, or replace a failed probe entirely without ever opening the machine.

The American Petroleum Institute's API 670 Standard is the definitive document for machinery protection systems in the oil, gas, and petrochemical industries. It specifies requirements for proximity probe housings, including materials, installation, and performance. The 31000-28-05-00-056-01-02 is fully compliant with API 670 for externally mounted proximity probe housings. This compliance gives engineers confidence that the housing will perform reliably in demanding refinery and offshore applications. For plant operators subject to API compliance audits, using certified components simplifies the approval process. The housing meets rigorous standards for corrosion resistance, mechanical strength, and environmental sealing.

Industrial environments, especially in chemical plants, refineries, and offshore platforms, expose equipment to corrosive agents: salt spray, hydrogen sulfide, moisture, and acidic vapors. Standard metal housings can corrode, seize threads, and eventually fail. The 31000-28-05-00-056-01-02 is built to resist these conditions. The main housing body is made of polyphenylene sulfide (PPS), an advanced high-strength thermoplastic. PPS has exceptional chemical resistance, low moisture absorption, and high thermal stability (continuous use up to 200°C). It will not rust or corrode, even after years of exposure. All other components – fittings, plugs, and hardware – are made of corrosion-resistant stainless steel.

The 31000-28-05-00-056-01-02 Bently Nevada Proximity Probe Housing Assemblies may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL)by the manufacturer (OEM).

Bently Nevada 31000-28-05-00-056-01-02 Proximity Probe Housing Assemblies 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.
Bently Nevada 31000-28-05-00-056-01-02 Proximity Probe Housing Assemblies Specs

General

  • Manufacturer GE /Bently Nevada
  • Model 31000-28-05-00-056-01-02
  • Condition New Original ready stock
  • Product Family 31000-33-05-00-056-01-02,31000-35-05-00-056-01-02,31000-28-10-00-056-01-02
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.
  • Steam Turbines and Gas Turbines: Monitoring radial vibration (shaft vibration) and axial displacement (thrust displacement) of the rotating shaft.
  • Centrifugal Compressors and Pumps: Detecting bearing wear, imbalance, or misalignment.
  • Generators and Motors: Preventing friction between rotating parts and the stator.
  • Fans and Gearboxes: Monitoring axial stability under high-speed operation.
  • Extreme Temperature: Supports operation within a range of -51°C to +177°C.
  • Extension Cord and Preamplifier: Designed to withstand the erosion of chemicals, oil stains, and industrial fluids.
  • Physical Protection: Excellent sealing performance prevents lubricating oil, moisture, and dust from entering the probe.
  • Explosion-proof Certification: Typically meets Ex ia (intrinsically safe) or Div 1/Div 2 certifications, allowing installation in flammable and explosive petrochemical and natural gas environments.
  • Signal Principle: Utilizing the "Eddy Current principle," the change in distance between the probe and the rotating shaft is converted into a proportional voltage signal (typically 200 mV/mil or 7.87 V/mm).
  • Static Monitoring: Used for "axial displacement" monitoring; a shutdown alarm is triggered when axial displacement exceeds the safety threshold.
  • Dynamic monitoring: Used for radial vibration, capturing changes in the shaft trajectory and identifying early signs of bearing failure.
  • Fault detection: The monitoring system automatically checks the "OK circuit." If the probe cable is broken or short-circuited, the system will issue a fault alarm to prevent accidental shutdown.
Description
The 31000-28-05-00-056-01-02 is a Bently Nevada 31000 proximity probe housing assembly for radial vibration and Keyphasor measurements. It includes a 3300 XL 8 mm probe with multiple approvals, a 0.5 m (20 in) probe cable, no standoff adapter, a 5.6 inch probe penetration, one 3/4-14 NPT fitting with two plugs, and a 3/4-14 NPT mounting thread.

When using the 31000-28-05-00-056-01-02, engineers can mount a proximity probe through the machine case without disassembling the machine. The housing allows external access to the probe and extension cable, enabling gap adjustment or probe replacement without machine disassembly. 

The 31000-28-05-00-056-01-02 is made of polyphenylene sulfide (PPS), an advanced high-strength thermoplastic with excellent corrosion resistance. Other components are made of corrosion-resistant stainless steel. 

For legacy Bently Nevada system expansions or repairs, the 31000-28-05-00-056-01-02 provides a complete housing assembly. It is specifically designed for radially mounted transducers. The housing is recommended when mounting proximity probes through the machine case. 
Alternative Names
31000-33-05-00-056-01-02 31000-34-05-00-056-01-02 31000-28-00-00-056-01-02 31000-28-10-00-056-01-02
Technical notes
The 31000-28-05-00-056-01-02 uses a 3/4-14 NPT mounting thread, which is a standard pipe thread size for industrial machine casings. This allows the housing to be screwed directly into a pre-tapped hole in the machine case.The probe penetration of 5.6 inches is the distance from the mounting surface to the probe tip.
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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.
Does the 31000-28-05-00-056-01-02 allow probe replacement without machine disassembly?
Yes. The 31000-28-05-00-056-01-02 provides external access to the proximity probe and extension cable. You can adjust the gap or replace the probe without disassembling the machine case, significantly reducing maintenance downtime on turbomachinery.
Is the 31000-28-05-00-056-01-02 compliant with industry standards?
Yes. The 31000-28-05-00-056-01-02 is fully compliant with the American Petroleum Institute's API 670 Standard for externally mounted proximity probe housings, meeting requirements for vibration monitoring in refineries and petrochemical plants.
What materials are used in the 31000-28-05-00-056-01-02?
The housing is made of polyphenylene sulfide (PPS), an advanced high-strength thermoplastic with excellent corrosion resistance. Other components (fittings, hardware) are corrosion-resistant stainless steel, ensuring long-term reliability in harsh industrial environments.
Which probe is included with the 31000-28-05-00-056-01-02?
The 31000-28-05-00-056-01-02 includes a 3300 XL 8 mm proximity probe with multiple agency approvals. The probe cable length is 0.5 m (20 in). The probe penetration is 5.6 inches, suitable for typical machine casing thicknesses.

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