Bently Nevada 21000-28-05-00-47-01-02 Proximity Probe Housing Assemblies

Description

The Bently Nevada 21000-28-05-00-47-01-02 is an aluminum proximity probe housing assembly designed for externally mounted 3300 XL 8 mm proximity probes. It includes a 0.5 m probe cable, a 4.7-inch probe penetration length, one explosion-proof fitting with one plug, and a 3/4-14 NPT mounting thread for secure installation. Configured with a 3300 XL 8 mm probe featuring selectable hazardous area approvals, this housing assembly provides reliable probe mounting and environmental protection for machinery condition monitoring applications and is fully compatible with the 3300 XL proximity transducer system.

Parameter

Model: 21000-28-05-00-47-01-02 Proximity Probe Housing Assemblies
Probe with Connector: 28-3300 XL 8mm probe, selectable hazardous area approvals
Probe Cable Length: 05-0.5 m (20 in)
Standoff Adapter (Option C Dimension): 00-No standoff adapter
Probe Penetration (Option D Dimension): 47-4.7 in (120 mm)
Fittings: 01-One 3/4-14 NPT explosion-proof fitting One 3/4-14 NPT plug
Mounting Thread: 02-3/4-14 NPT

Frequently asked questions

Q:What is the Bently Nevada 21000-28-05-00-47-01-02？
A:The Bently Nevada 21000-28-05-00-47-01-02 is an external aluminum proximity probe housing assembly manufactured by Bently Nevada Fully compliant with the industrial API 670 standard, this assembly comes pre-installed with a 3300 XL 8mm reverse-mount eddy current proximity probe.

Q:Does oil leak out from the machine when replacing the probe?
A:No, the assembly features integrated retaining O-rings and a thread seal. The protective sleeve contains internal sealing mechanisms that prevent hot bearing lubrication oil from leaking past the probe body

Q:Why is explosion-proof protection important for the 21000-28-05-00-47-01-02?
A:Explosion-proof protection helps prevent ignition risks by containing any internal electrical faults within the enclosure. This enhances operational safety and ensures compliance with hazardous-area installation requirements.

Application areas

The Bently Nevada 21000-28-05-00-47-01-02 housing assembly is designed for the online maintenance and adjustment of critical machinery sensors without downtime, It featuring a weatherproof aluminum enclosure and global hazardous approvals.

• Large Steam Turbine-Generator Sets: Mounted on the high/low-pressure cylinder bearing housings of steam turbines and generator bearing pedestals. Its external adjustment design ensures running power plants do not face forced shutdowns for sensor swaps. 
• Outdoor Exposed Rotating Machinery: The aluminum housing provides CSA Type 4 (IP66) sealing. It is widely used on iron mill blowers, paper mill drying cylinder bearings, and mining slurry pumps where heavy oil, water sprays, or coal dust are present.
• Gas Turbines & Hydro-Turbines: Captures dynamic shaft orbit analysis data on heavy-duty gas turbine sections and high-speed hydro-turbine shaft strings.
• Hazardous Chemical Plant Zones (-28/-05 Approvals): The pre-installed probe configuration with multiple global agency approvals (-05) makes it perfectly suited for explosive environments (Zone 0/1 or Class I, Div 1) such as refineries, gas compressor stations, and ethylene plants.

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