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Bently Nevada 21000-28-05-00-130-04-02
Bently Nevada 21000-28-05-00-130-04-02
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Proximity Probe Housing Assemblies

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

Spare Part Number

PN21000-28-05-00-130-04-02

Product Information:

The Proximity Probe Housing Assembly (PPHA), model number 21000-28-05-00-130-04-02, is compatible with the 21000 Series Eddy Current Sensor Probes manufactured by Bently Nevada (a subsidiary of Baker Hughes). This assembly is designed for monitoring bearing vibration and displacement in large rotating machinery, such as steam turbines, compressors, and fans, and conforms to the API 670 international standard.

The 21000-28-05-00-130-04-02 housing features a 3/4-14 NPT threaded plug (code 04), and the entire assembly is securely screwed into the machine bearing housing via a standard 3/4-14 NPT thread (code 02). To meet the requirements of industrial field applications and environments, this protective housing typically utilizes a machined aluminum housing and a 304 stainless steel probe sleeve, combining lightweight construction with high mechanical strength.

21000-28-05-00-130-04-02 has obtained international explosion-proof and intrinsically safe certifications such as CSA, making it suitable for hazardous areas containing flammable gases or vapors, and features a high level of waterproof and dustproof housing protection (CSA Type 4). This allows this high-precision measuring unit to continuously output reliable machine health data in extremely harsh industrial environments filled with high temperatures, high pressures, oil contamination, and severe vibrations.

Product image is representative; revision or series may vary. Contact us to request a specific version.
  • One-year warranty
  • Global shipping
  • Exact-model verification
Technical specifications for

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

0 TECHNICAL PARAMETERS
  • Manufacturer:
    Bently Nevada
  • Product Category:
    Sensor
  • Spare Part Number:
    21000-28-05-00-130-04-02
  • Estimated shipping dimensions:
    12.5 x 20 x 18 cm
  • Weight:
    1.25 kg
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
  • Product Type:
    Proximity Probe Housing Assemblies
  • Category Series:
    21000, 24701, and 164818 Proximity Probe Housing Assemblies
  • Probe with Connector:
    3300 XL 8mm probe, selectable hazardous area approvals
  • Probe Cable Length:
    0.5 m (20 in)
  • Standoff Adapter (Option C Dimension):
    No standoff adapter
  • Probe Penetration (Option D Dimension):
    13.0 in (330.2 mm)
  • Fittings:
    One 3/4-14 NPT plug only
  • Mounting Thread:
    3/4-14 NPT
  • Operating and storage:
    -51°C to +177°C (-60°F to +351°F)
  • Material:
    Aluminum body with 304 stainless steel sleeve
  • Series:
    3300 System
  • Stock:
    100
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  • 01

    Factory Sealed

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  • 02

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  • 03

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Alternative Names

210002805001300402 21000 28 05 00 130 04 02 2I000-28-05-00-I30-04-02 21OOO-28-O5-OO-13O-O4-O2 21000-2B-05-00-130-04-02 21000-28-05-00-130-0A-02 21000-28-05-00-130-04-01 21000-28-05-00-130-04-04 21000-28-05-00-130-04-CN 21000-28-05-00-130-04-BR 21000-28-05-00-130-04-RU 21000-28-05-00-130-04-US

Information

Overview Manuals Basic Info Ordering Information Main Features

Features:

  • Proximity Probe Housing Assemblies
  • Aluminum body with 304 stainless steel sleeve
  • 21000, 24701, and 164818 Proximity Probe Housing Assemblies
The 21000 and 24701 Proximity Probe Housing Assemblies are available with Canadian Standards Association (CSA) approvals. They are rated explosion proof for hazardous areas. Bently Nevada offers a probe support and oil seal (part number 37948-01) for long sleeves that must go through an inner bearing housing.

To externally mount proximity probes, use one of these allmetal Proximity Probe Housing Assemblies: 21000 aluminum probe housing assembly; 24701 stainless steel probe housing assembly The 21000 and 24701 Proximity Probe Housing Assemblies consist of the following parts:A dome cover that screws into the body of the housing; Threaded ports for conduit connections; A probe sleeve of optional length; 0-rings; A reverse mount proximity probe; A thread seal; Optional conduit fittings; An optional standoff adapter.

The 21000-28-05-00-130-04-02 Bently Nevada Proximity Probe Housing Assemblies may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 21000-28-05-00-130-04-02 Proximity Probe Housing Assemblies 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.
  • Model: 21000-28-05-00-130-04-02
  • Warranty: One-year warranty
  • Condition: Brand new, original, in stock
  • Product Family: 21000, 24701, and 164818 Proximity Probe Housing Assemblies
Proximity Probe Housing Assemblies
21000-Axx-Bxx-Cxx-Dxxx-Exx-Fxx

A: Probe with Connector
00: Probe not required
14: 420 nuclear
16: 3300 XL 8mm probe
26: 3300 XL NSv probe
27: 3300 XL NSv probe, selectable hazardous area approvals
28: 3300 XL 8mm probe, selectable hazardous area approvals
29: 3300 XL 11mm probe
30: 3300 XL 11mm probe, selectable hazardous area approvals
31: 3300 XL NSv probe with connector protector
32: 3300 XL NSv probe with connector protector, selectable hazardous area approvals
33: 3300 XL 8mm probe with connector protector
34: 3300 XL 8mm probe with connector protector, selectable hazardous area approvals
35: 3300 XL 11mm probe with connector protector
36: 3300 XL 11mm probe with connector protector, selectable hazardous area approvals
37: 3300 XL 8mm probe, ETR, selectable hazardous area approvals (available for 21000 only)
 
B: Probe Cable Length
00: Probe cable not required
05: 0.5 m (20 in)
10: 1.0 m (39 in)
12: 12.0 in
18: 18.0 in
24: 24.0 in
30: 30.0 in
36: 36.0 in
 
C: Standoff Adapter (Option C Dimension)
15: Minimum length 1.5 in (38 mm)
75: Maximum length 7.5 in (191 mm)
Examples
1.5 in (38 mm) = 15
No standoff adapter = 00
 
D: Probe Penetration (Option D Dimension)
10: Minimum length 1.0 in (25.4 mm)
Examples
3.7 in (94 mm) = 037
22.4 in (569 mm) = 224
 
E: Fittings
00: Without fittings
01: One 3/4-14 NPT explosion-proof fitting; One 3/4-14 NPT plug
02: Two 3/4-14 NPT explosion-proof fittings
03:One 3/4-14 NPT plug; One 3/4-14 to 1/2-14 NPT reducer; One cable seal grip with grommets for; the following cable sizes:
• 1/8 to 3/16 inches
• 1/4 to 5/16 inches
• 5/16 to 3/8 inches
04: One 3/4-14 NPT plug only
 
F: Mounting Thread
01: As cast without threads
02: 3/4-14 NPT
04: 1/2-14 BSP
Designed for high-temperature, high-vibration, and oil-mist environments, this hardware features a robust CSA Type 4 enclosure with excellent dust and water resistance. It meets stringent explosion-proof certification standards for Class I Zone 1 hazardous areas and can be safely deployed in critical oil and gas, power generation, or chemical plants.

Technical notes

The Bentley Nevada 21000-28-05-00-130-04-02 is an explosion-proof eddy current displacement probe with an all-metal housing, aluminum body, and 304 stainless steel sheath. This model features a 3300 XL 8mm reverse-mount probe (28) with multiple explosion-proof certifications and comes with a 0.5-meter cable (05). Its configuration includes: a partless adjustable pitch connector (00), a 13.0-inch probe depth (130), a 3/4-14 NPT plug (04), and a 3/4-14 NPT mounting thread (02). This probe is designed for external safety protection and precise monitoring of vibration and axial displacement in rotating machinery such as steam turbines and compressors, and conforms to API 670 standards.
PRODUCT & ORDER FAQS

Questions buyers ask about 21000-28-05-00-130-04-02

  • What sensing technology does the 21000-28-05-00-130-04-02 probe use to achieve micron-level measurement accuracy?

    The 21000-28-05-00-130-04-02 probe uses high-frequency eddy current sensor technology to generate an electromagnetic field that responds to changes in the distance between the probe tip and a conductive target. This non-contact measurement principle offers excellent linearity, repeatability, and resistance to mechanical wear.
  • What are the probe configuration and dimensions of the 21000-28-05-00-130-04-02?

    The 21000-28-05-00-130-04-02 probe body uses an M10 × 1 thread, has a probe tip diameter of 5 mm, and a probe length of 130 mm. These dimensional characteristics facilitate installation in space-constrained machine tool housings while maintaining optimal sensing performance for rotating equipment.
  • What are the measurement range and sensitivity advantages of the 21000-28-05-00-130-04-02 in precision machinery diagnostics?

    The 21000-28-05-00-130-04-02 is designed for use with compatible proximity actuators and extension cables, providing a linear measurement range of approximately 2 mm (80 mils). This probe provides high-resolution displacement measurements and is suitable for monitoring shaft vibration, axial position, eccentricity, and rotor dynamics.
  • How to ensure high-frequency dynamic response in rotating equipment analysis?

    The 21000-28-05-00-130-04-02 has a wide frequency response range, enabling accurate detection of low-frequency shaft motion and high-frequency vibration phenomena. This dynamic performance allows engineers to diagnose imbalances, misalignments, mechanical loosening, oil swirl, and bearing-related instabilities.
  • Which cable configuration should be used for the 21000-28-05-00-130-04-02?

    The 21000-28-05-00-130-04-02 comes with a 5-meter integrated low-noise coaxial cable, carefully designed to maintain signal integrity and minimize electromagnetic interference (EMI). This cable is optimized for compatible extension cables and proximity sensor drivers to maintain calibrated system performance.
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Moore Disclaimer: Moore Automated's sales automation equipment and related solutions are intended for industrial automation and business operational efficiency improvement purposes only. Product information, technical parameters, and application cases are for reference only and do not constitute an absolute guarantee of performance for any specific industry, scenario, or final application. Actual equipment performance may vary depending on factors such as the usage environment, system integration method, and maintenance conditions. Users should confirm compatibility and safety based on professional technical assessments. Moore Automated assumes no liability for any direct or indirect losses caused by improper use, modification, or failure to operate according to specifications, to the extent permitted by law.

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