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Bently Nevada 21000-34-05-00-036-03-02
Bently Nevada 21000-34-05-00-036-03-02
· Product image is representative; revision or series may vary. Contact us to request a specific version.

21000-34-05-00-036-03-02

Proximity Probe Housing Assemblies
In Stock
Ships by Friday, August 7
Fast Shipping Available

Product Information:

The 21000-34-05-00-036-03-02 is an external mounting protective housing assembly for the 21000 series metal eddy current probes manufactured by Bently Nevada. This assembly is a fully compliant, API 670 standard mechanically integrated hardware kit specifically designed for bearing housing surfaces in large steam turbines, centrifugal compressors, and various high-pressure industrial pumps.
Its core design philosophy allows field maintenance personnel to safely perform gap calibration, disassembly, cleaning, or complete replacement of the internal probes directly from the outside of the machine without stopping the machine or disassembling the machine casing, greatly simplifying the daily dynamic monitoring and maintenance process for rotating machinery. Based on its highly customized selection coding breakdown, this assembly belongs to a classic explosion-proof configuration with a specific short sleeve and pre-installed probes.
Because the assembly has passed the certifications of mainstream international explosion-proof systems such as ATEX, IECEx and CSA, it is widely deployed in high-risk, flammable and explosive gas control areas such as petrochemical plants and large modern power plants, providing the most robust safety barrier for millisecond-level interlocking trip protection of core rotating assets.
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Technical specifications for 21000-34-05-00-036-03-02

  • Manufacturer:
    Bently Nevada
  • Product Category:
    TSI System
  • Estimated shipping dimensions:
    50 x 1.5 x 20 cm
  • Weight:
    2.5 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 with connector protector, 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):
    3.6 in (91.44 mm)
  • Fittings:
    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
  • 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
  • Stock:
    100

Alternative Names

21000 34 05 00 036 03 02 210003405000360302 2I000-34-05-00-036-03-02 21OOO-34-O5-OO-O36-O3-O2 21000-3A-05-00-036-03-02 21000-34-05-00-036-03-01 21000-34-05-00-036-03-04 21000-34-05-00-036-03-CN 21000-34-05-00-036-03-BR 21OOO-34-O5-OO-O36-O3-O1 2I000-34-05-00-036-03-04

Information

Overview Manuals Basic Info Instruction info Application Details

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 21000-34-05-00-036-03-02 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 21000-34-05-00-036-03-02 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: 21000-34-05-00-036-03-02
  • 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
1.Global Oil & Gas Operations: This configuration is favored by global Engineering, Procurement, and Construction (EPC) contractors due to the built-in 3300 XL probe's multiple certifications (ATEX, IECEx, CSA, etc.). It can be deployed in explosion-hazardous areas worldwide (Zones 0/1 or 1, Class I) without requiring hardware customization for different countries.
2.Standard Wall Thickness Bearing Housing Monitoring: The 3.6-inch sleeve is designed for standard wall thickness machine housings or bearing housings. It provides just the right detection distance to penetrate machine walls and piping, ensuring perfect alignment of the probe tip with the rotating shaft.
3.Critical Rotating Machinery Protection: Typically installed on high-speed centrifugal compressors, steam turbines, and large industrial pumps to monitor:
Radial Vibration: Tracks the dynamic movement of the shaft to detect imbalance, misalignment, or bearing wear.
Axial Position/Thrust: Tracks rotor displacement to prevent catastrophic internal contact.
4.High Vibration, Confined Space Environments: Option 00 (without bracket adapter) layout is ideal for applications with limited external space. Attaching the aluminum junction box directly to the machine surface significantly shortens the mechanical lever arm, preventing components from cracking or loosening under the extreme G-forces generated by the machine.
5.Harsh Outdoor and Marine Environments: Option 03 Accessory Kit provides a robust cable connector for sealing existing extension cables. This unit features a NEMA 4/IP66 aluminum housing, commonly used in offshore drilling platforms and coastal petrochemical plants, and must withstand intense seawater splashes, tropical downpours, and sandstorms.

Technical notes

The Bentley Nevada 21000-34-05-00-036-03-02 is an aluminum explosion-proof eddy current probe external protective housing assembly that meets API 670 standards and CSA Type 4 protection rating. It features a built-in 3300 XL 8 mm reverse-mount probe, a 0.5-meter cable, a direct-mount design, and a 3.6-inch sleeve immersion depth. It is designed to protect sensors in industrial environments and enable external online adjustment of the probe gap.
  • Product Lifecycle Stage

    Active/Available from OEM

    As a trusted industrial supplier, Moore Automated provides high-quality Bently Nevada replacement modules and spare parts to support your automation systems. Our efficient solutions are designed to minimize unexpected downtime for our customers, ensuring the smooth operation of your critical business.

Ask our team:

  • What are the main engineering functions of the 21000-34-05-00-036-03-02 in advanced rotating machinery condition monitoring applications?
    The 21000-34-05-00-036-03-02 is an eddy current proximity probe assembly designed for high-precision, non-contact measurement of shaft vibration, radial displacement, axial position, and rotor mechanical motion. It is designed as a key sensing element in calibrating proximity sensor systems for mechanical protection and predictive maintenance.
  • What mechanical probe configuration does the proximity sensing component 21000-34-05-00-036-03-02 use?
    21000-34-05-00-036-03-02 uses a 34 mm probe body configuration, with order code 34. This robust mechanical construction provides greater installation stability, superior mechanical strength, and reliable positioning performance in high-vibration industrial environments.
  • 21000-34-05-00-036-03-02 How to ensure high-fidelity signal transmission under electromagnetic interference conditions?
    21000-34-05-00-036-03-02 A shielded impedance-controlled coaxial cable structure is used to minimize signal attenuation, electromagnetic interference (EMI), radio frequency interference (RFI), and electrical noise. This design ensures reliable displacement signal integrity in complex industrial environments.
  • 21000-34-05-00-036-03-02 What calibration reference method is used to maintain measurement accuracy?
    The 21000-34-05-00-036-03-02 is factory-calibrated using AISI 4140 steel, the standard reference material for eddy current proximity measurement systems. This calibration process ensures accurate sensitivity, predictable linear range, and consistent measurement 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.