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31000-28-05-00-059-02-02

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The 31000-28-05-00-059-02-02 is a Bently Nevada 31000 PPS probe housing assembly with 3300 XL 8mm probe (multiple approvals), 0.5m cable, 5.9″ penetration, and two 3/4‑14 NPT fittings.
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Technical specifications for 31000-28-05-00-059-02-02

  • Manufacturer:
    Bently Nevada
  • Part Number:
    31000-28-05-00-059-02-02
  • Product Family:
    31000 and 32000 Proximity Probe Housing Assemblies
  • Product Type:
    Proximity Probe Housing Assemblie
  • Probe Cable Length:
    0.5 meter (20 inches) (option 05)
  • Standoff Adapter:
    None (00)
  • Probe Penetration (C + D):
    5.9 inches (059)
  • Fittings:
    Two 3/4‑14 NPT fittings, one plug (02)
  • Mounting Thread:
    3/4‑14 NPT (option F = 02)
  • Housing Material:
    Polyphenylene Sulfide (PPS) with stainless steel components
  • API Compliance:
    API 670 Standard
  • Weight:
    1.5 kg
  • Estimated shipping dimensions:
    37x9x8cm
  • Tariff Code:
    8525891900
  • 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 Firmware & Updates Configuration & Programming

Features:

  • Threaded housing mounts through casing port; allows probe gap adjustment and replacement without opening the machine; reduces maintenance downtime.
  • Meets American Petroleum Institute Standard 670; housing made of polyphenylene sulfide (PPS) with stainless steel components; excellent corrosion resistance.
  • Includes 3300 XL 8mm probe with multiple hazardous area approvals, 0.5m cable, two 3/4‑14 NPT fittings, and 3/4‑14 NPT mounting thread.
The 31000-28-05-00-059-02-02 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 that can take days. This housing solves that problem. It mounts directly into a threaded port (3/4‑14 NPT) in the casing and provides external access to the probe and its extension cable. A 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. For critical turbomachinery such as steam turbines, centrifugal compressors, and gas turbines, this feature reduces maintenance downtime from days to hours.

The American Petroleum Institute’s API 670 Standard is the industry benchmark for machinery protection systems in oil, gas, and petrochemical facilities. It specifies rigorous requirements for proximity probe housings, including materials, installation, and performance. The 31000-28-05-00-059-02-02 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 31000-28-05-00-059-02-02 is delivered as a complete, ready‑to‑install assembly. It includes the 31000 PPS housing, a 3300 XL 8mm probe with multiple hazardous area approvals (option 28), a 0.5 meter probe cable (option 05), two 3/4‑14 NPT fittings with one plug (option 02), and a 3/4‑14 NPT mounting thread (option F = 02). The “28” probe option includes a 3300 XL 8mm probe with multiple approvals (e.g., ATEX, CSA, IECEx) for hazardous area installations. The housing is designed for radial vibration and Keyphasor measurements.

The 31000-28-05-00-059-02-02 Bently Nevada Proximity Probe Housing Assemblie may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL)by the manufacturer (OEM).

Bently Nevada 31000-28-05-00-059-02-02 Proximity Probe Housing Assemblie 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 31000-28-05-00-059-02-02 Proximity Probe Housing Assemblie Specs

General

  • Manufacturer GE /Bently Nevada
  • Model 31000-28-05-00-059-02-02
  • Condition New Original ready stock
  • Product Family 125768-01,128229-01,133323-01
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.
  • Turbomachinery Diagnostics: Installed on high-speed critical assets, such as large steam turbines, gas turbines, axial air compressors, and high-pressure boiler feed pumps.
  • Online Sensor Maintenance: Primarily used where shutdown costs are extreme. It enables mechanics to adjust probe gaps or swap out damaged sensors through the housing exterior without stopping the machine or breaching the oiled bearing casing.
  • High-Debris & Corrosive Environments: Protects the delicate internal sensor cable from aggressive chemicals, high-velocity oil splashes, and external mechanical damage common in petrochemical plants, marine propulsion, and heavy utilities.
  • No Native Software: The housing and probe unit require no firmware updates, software patches, or digital operating code.
  • Downstream Updates: Firmware lifecycle tracking must instead be directed to the electronic hardware interpreting the analog voltage signal.
  • Linear Positioning: Technicians adjust the physical gap by rotating the internal sleeve inside the housing body. This moves the 11 mm probe closer to or further from the target shaft.
  • Voltage Mapping: A digital multimeter (DMM) is attached to the Proximitor sensor's buffered output. The sleeve is turned until the electrical gap registers the target bias voltage (typically -9.0 V DC to center the reading within the 11 mm probe’s linear range).
  • Locking the Depth: The sleeve is secured using the dual external locking nuts on the housing body to prevent positional drift caused by structural machinery vibrations.
Description
The 31000-28-05-00-059-02-02 is a PPS (polyphenylene sulfide) proximity probe housing assembly for externally mounting proximity probes through machine casings. It includes a 3300 XL 8mm probe with multiple hazardous area approvals (option 28), a 0.5 meter (20 inch) cable (option 05), no standoff adapter (00), and a probe penetration of 5.9 inches (option D = 059).

When using the 31000-28-05-00-059-02-02, engineers can install the housing through a threaded port in the machine casing. The 31000/32000 housing allows external access to the probe and extension cable, enabling gap adjustment and probe replacement without machine disassembly. 

The 31000-28-05-00-059-02-02 has a 3/4‑14 NPT mounting thread (option F = 02). The fitting option (E = 02) includes two 3/4‑14 NPT fittings and one plug. The total probe penetration is 5.9 inches (059). The 3300 XL 8mm probe has multiple hazardous area approvals (option 28). 

For legacy Bently Nevada system installations, the 31000-28-05-00-059-02-02 provides a complete housing assembly. The housing is designed for radial vibration and Keyphasor measurements on steam turbines, compressors, and pumps. 
Alternative Names
3I000-28-05-00-059-02-02 31OOO-28-O5-OO-O59-O2-O2 31000 28 05 00 059 02 02 125760-01 125768-01 128229-01 133323-01 135137-01
Technical notes
The 31000-28-05-00-059-02-02 is a Bently Nevada 31000 PPS probe housing assembly for externally mounting 3300 XL 8mm proximity probes. It features 0.5m cable, 5.9″ penetration, two 3/4‑14 NPT fittings, and 3/4‑14 NPT mounting thread. The housing allows probe gap adjustment and replacement without machine disassembly.
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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 probe penetration of 31000-28-05-00-059-02-02?
Total probe penetration is 5.9 inches (059) , measured from the mounting surface to the probe tip. No standoff adapter is used (C=00). For the 0.5m probe cable, the maximum C plus D is 15.5 inches; 5.9 inches is well within this limit.
Is 31000-28-05-00-059-02-02 explosion‑proof?
No. The 31000/32000 housing provides mechanical and environmental protection only. For explosion‑proof applications, use CA21000 or CA24701 housings. However, the 31000-28-05-00-059-02-02 can be used in intrinsically safe hazardous areas when installed with approved I.S. barriers.
What fittings come with 31000-28-05-00-059-02-02?
Fitting option 02 includes two 3/4‑14 NPT fittings and one plug. This allows two conduit entries (e.g., for probe cable and an extension cable). If using flexible conduit, order E=00 (no fittings). The 3/4‑14 NPT mounting thread is standard.
Is 31000-28-05-00-059-02-02 suitable for corrosive environments?
Yes. The housing is made of polyphenylene sulfide (PPS) , an advanced high‑strength thermoplastic with excellent corrosion resistance. Other components are corrosion‑resistant stainless steel. For extremely corrosive conditions, consider the 32000 metric version or stainless steel housings.

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